CN216720557U - Box-type substation - Google Patents
Box-type substation Download PDFInfo
- Publication number
- CN216720557U CN216720557U CN202122707207.0U CN202122707207U CN216720557U CN 216720557 U CN216720557 U CN 216720557U CN 202122707207 U CN202122707207 U CN 202122707207U CN 216720557 U CN216720557 U CN 216720557U
- Authority
- CN
- China
- Prior art keywords
- breaker
- incoming line
- normally closed
- transformer
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a box-type substation, comprising: a high pressure chamber; the low-pressure chamber comprises a first low-pressure cabinet and a second low-pressure cabinet; the transformer chamber comprises a first transformer and a second transformer, and the high-voltage sides of the first transformer and the second transformer are both connected with the high-voltage chamber; the first incoming line breaker is arranged on a first bus connecting a first transformer and a first low-voltage cabinet; the second incoming line breaker is arranged on a second bus connecting a second transformer and a second low-voltage cabinet; and the interconnection breaker is arranged in a circuit connecting the first low-voltage cabinet and the second low-voltage cabinet. According to the utility model, the communication breaker is used for communicating the power transmission line between the first low-voltage cabinet and the second low-voltage cabinet, and when the first transformer or the second transformer needs to be powered off, continuous power supply of important loads can be ensured by adjusting the opening state and the closing state of the first incoming line breaker, the second incoming line breaker and the communication breaker, so that the economic loss caused by power failure is reduced.
Description
Technical Field
The utility model relates to the field of electrical equipment, in particular to a box-type substation.
Background
With the improvement of living standard, the demand of electricity utilization of people is more and more vigorous, and the application of the box-type transformer substation in a power system is more and more extensive.
The box-type substation is a compact complete distribution device which combines a distribution transformer of high-voltage switch equipment, low-voltage switch equipment, electric energy metering equipment, a reactive compensation device and the like in one or more boxes according to a certain wiring scheme.
In the related art, most box-type substations are provided with one transformer, so when the transformer needs to be powered off, in order to ensure continuous power supply of important loads and reduce economic loss caused by power failure, the following method is generally adopted: the temporary generator supplies power to the low-voltage load, but the loss of manpower and material resources is large; set up the contact cabinet in box-type substation, contact another box-type substation through low tension cable, because the distance between two box-type substations is far away, need bury longer cable underground, and the installation secondary control line is longer, can't realize mechanical lever chain, therefore this method need increase more loss and cost, and need operate between two box-type substations to it is inconvenient as for the operation.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a box-type transformer substation which can ensure continuous power supply of important loads when a transformer needs to be powered off, so that economic loss caused by power failure is reduced.
According to a first aspect embodiment of the utility model, a box substation comprises:
a high pressure chamber;
the low-pressure chamber comprises a first low-pressure cabinet and a second low-pressure cabinet;
the transformer chamber comprises a first transformer and a second transformer, and the high-voltage sides of the first transformer and the second transformer are both connected with the high-voltage chamber;
the first incoming line breaker is arranged on a first bus connecting the first transformer and the first low-voltage cabinet;
the second incoming line breaker is arranged on a second bus connected between the second transformer and the second low-voltage cabinet;
and the communication circuit breaker is arranged in a circuit connecting the first low-voltage cabinet and the second low-voltage cabinet.
The box-type substation provided by the embodiment of the utility model at least has the following beneficial effects:
in the normal use process of the box-type substation, the first incoming line breaker is switched on, the second incoming line breaker is switched on, and the interconnection breaker is switched off, so that electric energy is transmitted to a high-voltage room from a power grid, is reduced to low voltage through a first transformer and a second transformer in a transformer room, and is transmitted to a first low-voltage cabinet and a second low-voltage cabinet in the low-voltage room respectively to supply power for low-voltage loads. When the first transformer needs to have a power failure, the first incoming line breaker is opened, the second incoming line breaker is closed, the interconnection breaker is closed, and the second transformer supplies power to the incoming line of the first low-voltage cabinet through the interconnection breaker, so that the low-voltage load of the first low-voltage cabinet does not stop working due to the power failure of the first transformer. When the second transformer needs to have a power failure, the first incoming line breaker is switched on, the second incoming line breaker is switched off, and the interconnection breaker is switched on, and the first transformer supplies power to the incoming line of the second low-voltage cabinet through the interconnection breaker, so that the low-voltage load of the second low-voltage cabinet does not stop working due to the power failure of the second transformer. According to the utility model, the communication breaker is used for communicating the power transmission line between the first low-voltage cabinet and the second low-voltage cabinet, and when the first transformer or the second transformer needs to be powered off, continuous power supply of important loads can be ensured by adjusting the opening state and the closing state of the first incoming line breaker, the second incoming line breaker and the communication breaker, so that the economic loss caused by power failure is reduced.
Optionally, according to some embodiments of the present invention, the first incoming breaker comprises a first interlocking portion, the second incoming breaker comprises a second interlocking portion, and the interconnection breaker comprises a third interlocking portion; first interlocking portion with second inlet wire circuit breaker contact the circuit breaker, second interlocking portion with first inlet wire circuit breaker contact the circuit breaker, third interlocking portion with first inlet wire circuit breaker contact the circuit breaker, second inlet wire circuit breaker connects, so that first inlet wire circuit breaker second inlet wire circuit breaker with contact the unable combined floodgate simultaneously of circuit breaker three.
Optionally, according to some embodiments of the present invention, each of the first interlocking part, the second interlocking part, and the third interlocking part is provided with four pins, two of the pins form a set of normally closed contacts,
after one of the normally closed contacts of the first interlocking part is connected in parallel with one of the normally closed contacts of the second interlocking part, the normally closed contacts of the first interlocking part are connected into a closing loop of the interconnection circuit breaker;
after the other normally closed contact of the first interlocking part is connected in parallel with one of the normally closed contacts of the third interlocking part, the other normally closed contact of the first interlocking part is connected into a closing loop of the second incoming line breaker;
and after the other normally closed contact of the second interlocking part is connected with the other normally closed contact of the third interlocking part in parallel, the other normally closed contact of the second interlocking part is connected into a closing loop of the first incoming line breaker.
Optionally, according to some embodiments of the present invention, the box-type substation further includes an interlocking device, which is connected to the first incoming line breaker, the second incoming line breaker, and the interconnection breaker, so that the first incoming line breaker, the second incoming line breaker, and the interconnection breaker cannot be switched on at the same time.
Optionally, according to some embodiments of the utility model, the interlock is a mechanical interlock, a program interlock or a relay interlock.
Optionally, according to some embodiments of the present invention, an input end of the program interlocker is connected to the first incoming line breaker, the second incoming line breaker, and the interconnection breaker, and an output end of the program interlocker is connected to a closing coil and an opening coil of the first incoming line breaker, the second incoming line breaker, and the interconnection breaker.
Optionally, according to some embodiments of the present invention, the relay interlock includes a detection portion and an action portion, the detection portion is configured to detect on-off states of the first incoming line breaker, the second incoming line breaker, and the interconnection breaker, and the action portion is connected to a closing loop of the first incoming line breaker, the second incoming line breaker, and the interconnection breaker.
Optionally, according to some embodiments of the utility model, the relay interlock comprises a first relay, a second relay, and a third relay;
the control end of the first relay is connected with the first incoming line breaker, and a normally closed contact A and a normally closed contact B of the first relay are respectively arranged in the closing loops of the second incoming line breaker and the interconnection breaker;
the control end of the second relay is connected with the second incoming line breaker, and a normally closed contact C and a normally closed contact D of the second relay are respectively arranged in the closing loops of the first incoming line breaker and the interconnection breaker;
the control end of the third relay is connected with the interconnection circuit breaker, and two normally closed contacts E and F of the interconnection relay are respectively arranged in the closing loops of the first incoming line circuit breaker and the second incoming line circuit breaker;
normally closed contact A with normally closed contact F sets up in parallel, normally closed contact B with normally closed contact D sets up in parallel, normally closed contact C with normally closed contact E sets up in parallel.
Optionally, according to some embodiments of the present invention, the interconnection breaker is configured with an interconnection relay, the interconnection relay includes an energizing control end, a normally closed contact G, and a normally open contact H, the energizing control end is connected to the interconnection breaker, the normally closed contact G is disposed in a line in which the first bus supplies power to the interconnection breaker, and the normally open contact H is disposed in a line in which the second bus supplies power to the interconnection breaker.
Optionally, according to some embodiments of the present invention, the first incoming line breaker, the second incoming line breaker, and the interconnection breaker are all configured with an energy storage motor and an energy storage mechanism, the energy storage motor is used for driving the energy storage mechanism, and the energy storage mechanism is connected to the switching springs of the first incoming line breaker, the second incoming line breaker, and the interconnection breaker to compress or stretch the switching springs.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic connection diagram according to an embodiment of the present invention;
FIG. 2 is a diagram of the internal circuitry of the high voltage chamber and the transformer chamber according to the embodiment of the present invention;
FIG. 3 is an internal circuit diagram of a low pressure chamber according to an embodiment of the present invention;
fig. 4 is a schematic view of an interlock portion of a circuit breaker according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a tie breaker interlocking section according to an embodiment of the present invention;
FIG. 6 is a connection diagram of a controller according to an embodiment of the present invention;
fig. 7 is a schematic diagram of the internal connections of the relay interlock according to the embodiment of the present invention;
fig. 8 is a schematic diagram of external connections of a relay interlock according to an embodiment of the present invention.
Reference numerals:
a box-type substation 100, a first bus 101, a second bus 102, a first incoming line breaker 103, a first interlocking part 1031, a second incoming line breaker 104, a second interlocking part 1041, a tie breaker 105, a third interlocking part 1051, an electrifying control end 1052, a normally closed contact G1053, a normally open contact H1054, a zero line 106, an energy storage motor 107, a first closing coil X1, a second closing coil X2, a third closing coil X3,
the high-pressure chamber 110 is provided with a high-pressure chamber,
a low pressure chamber 120, a first low pressure tank 121, a second low pressure tank 122,
a transformer chamber 130, a first transformer 131, a second transformer 132,
the interlock device 140, the program interlock 141, the input 1411, the output 1412, the power terminal 1413, the relay interlock 142, the detection part 1421, the operation part 1422, the first relay 1423, the second relay 1424, the third relay 1425,
l1 is linked to L1, L2 is linked to L2,
the four pins of the first interlocking part are 1031a, 1031b, 1031c, 1031d,
the four pins of the second interlocking section are 1041a, 1041b, 1041c, 1041d,
the four pins of the third interlocking part are 1051a, 1051b, 1051c, 1051d,
a1, B1, C1, D1, E1 and F1 in the figure 7 are respectively connected with A2, B2, C2, D2, E2 and F2 in the figure 8 in an incoming line.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the essential numbers, and greater than, less than, etc. are understood as including the essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The box-type substation is a compact complete distribution device which combines a distribution transformer of high-voltage switch equipment, low-voltage switch equipment, electric energy metering equipment, a reactive compensation device and the like in one or more boxes according to a certain wiring scheme.
In the related art, most box-type substations are provided with one transformer, so when the transformer needs to be powered off, in order to ensure continuous power supply of important loads and reduce economic loss caused by power failure, the following method is generally adopted: the temporary generator supplies power to the low-voltage load, but the loss of manpower and material resources is large; the method is characterized in that a connection cabinet is arranged in the box-type substation and is connected with another box-type substation through a low-voltage cable, and the distance between the two box-type substations is long, so that more loss and cost are required to be increased, and the two box-type substations are required to be operated, so that the operation is inconvenient.
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a box-type transformer substation which can ensure continuous power supply of important loads when a transformer needs to be powered off, so that economic loss caused by power failure is reduced.
This is further explained below with reference to the drawings.
Referring to fig. 1 to 3, a box substation 100 according to an embodiment of a first aspect of the present invention includes:
a high voltage room 110 for introducing electric power in the grid into the box-type substation 100;
the low-voltage chamber 120 comprises a first low-voltage cabinet 121 and a second low-voltage cabinet 122, the first low-voltage cabinet 121 and the second low-voltage cabinet 122 are used for supplying power to low-voltage loads, the outgoing line part is connected with a load, and the capacitance compensation part is used for balancing inductive loads and improving power factors so as to improve the utilization rate of equipment;
the transformer chamber 130 comprises a first transformer 131 and a second transformer 132, the high-voltage sides of the first transformer 131 and the second transformer 132 are both connected with the high-voltage chamber 110, the voltage introduced by the high-voltage chamber 110 is subjected to voltage reduction processing through the first transformer 131 and the second transformer 132, and the low-voltage sides of the first transformer 131 and the second transformer 132 are both connected to the low-voltage chamber 120 and respectively supply power to the first low-voltage cabinet 121 and the second low-voltage cabinet 122;
the first incoming line breaker 103 is arranged on a first bus 101 connecting the first transformer 131 and the first low-voltage cabinet 121, when the first incoming line breaker 103 is switched on, the low-voltage side of the first transformer 131 transmits electric energy to the first low-voltage cabinet 121, and when the first incoming line breaker 103 is switched off, the low-voltage side of the first transformer 131 stops transmitting electric energy to the first low-voltage cabinet 121;
the second incoming line breaker 104 is arranged on a second bus 102 connecting the second transformer 132 and the second low-voltage cabinet 122, when the second incoming line breaker 104 is switched on, the low-voltage side of the second transformer 132 transmits electric energy to the second low-voltage cabinet 122, and when the second incoming line breaker 104 is switched off, the low-voltage side of the second transformer 132 stops transmitting electric energy to the second low-voltage cabinet 122;
and a communication breaker 105 disposed in a line connecting the first low-voltage cabinet 121 and the second low-voltage cabinet 122.
In the normal use process of the box-type substation 100, when the first transformer 131 and the second transformer 132 do not need to be powered off, the first incoming line breaker 103 is switched on, the second incoming line breaker 104 is switched on, and the interconnection breaker 105 is switched off, electric energy is transmitted to the high-voltage room 110 from the power grid, and is reduced to low voltage through the first transformer 131 and the second transformer 132 in the transformer room 130, the first transformer 131 transmits electric energy to the first low-voltage cabinet 121, and the second transformer 132 transmits electric energy to the second low-voltage cabinet 122;
when the first transformer 131 needs to have a power failure, the first incoming line breaker 103 is opened, the second incoming line breaker 104 is closed, and the interconnection breaker 105 is closed, although the first transformer 131 cannot supply power to the first low-voltage cabinet 121, because the interconnection breaker 105 is closed, the second transformer 132 supplies power to the second low-voltage cabinet 122, and simultaneously, the interconnection breaker 105 which is closed supplies power to the first incoming line breaker 103, so that the low-voltage load of the first low-voltage cabinet 121 does not stop working due to the power failure of the first transformer 131.
When the second transformer 132 needs to have a power failure, the second incoming line breaker 104 is opened, the first incoming line breaker 103 is closed, and the interconnection breaker 105 is closed, although the second transformer 132 cannot supply power to the second low-voltage cabinet 122, because the interconnection breaker 105 is closed, the first transformer 131 supplies power to the first low-voltage cabinet 121 and simultaneously supplies power to the second incoming line breaker 104 through the closed interconnection breaker 105, so that the low-voltage load of the second low-voltage cabinet 122 does not stop working due to the power failure of the second transformer 132.
According to the utility model, the communication breaker 105 is used for communicating the power transmission line between the first low-voltage cabinet 121 and the second low-voltage cabinet 122, and when the first transformer 131 or the second transformer 132 needs to be powered off, the switching-off state and the switching-on state of the first incoming line breaker 103, the second incoming line breaker 104 and the communication breaker 105 are adjusted, so that the continuous power supply of important loads is ensured in a simple and convenient and easy operation manner, and the economic loss caused by power failure is reduced.
Referring to fig. 4, 5, according to some embodiments of the utility model, the first incoming breaker 103 comprises a first interlock 1031, the second incoming breaker 104 comprises a second interlock 1041, and the tie breaker 105 comprises a third interlock 1051. First interlock 1031 is connected with second inlet wire circuit breaker 104, tie circuit breaker 105, and second interlock 1041 is connected with first inlet wire circuit breaker 103, tie circuit breaker 105, and third interlock 1051 is connected with first inlet wire circuit breaker 103, second inlet wire circuit breaker 104. The first interlocking part 1031, the second interlocking part 1041 and the third interlocking part 1051 are used for realizing an interlocking relationship among the first incoming breaker 103, the second incoming breaker 104 and the tie breaker 105, and the interlocking relationship includes but is not limited to: the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105 cannot be switched on simultaneously, and the interlocking relationship enables different transformers connected into the low-voltage chamber 120 to be isolated from one another, so that different power supplies are prevented from being connected to the grid and further safety accidents are prevented; when any one of the first incoming line breaker 103 and the second incoming line breaker 104 is opened, the interconnection switch is closed, and the interlocking relation ensures that the box-type substation 100 ensures continuous power supply of important loads without manual operation, so that the simplicity and convenience of the box-type substation 100 are improved, and the labor cost is saved. It should be understood that the closing loop of the first incoming breaker 103 is the transmission line from the first bus 101 to the first closing coil X1 and then to the neutral line 106, the closing loop of the second incoming breaker 104 is the transmission line from the second bus 102 to the second closing coil X2 and then to the neutral line 106, and the closing loop of the interconnection breaker is the transmission line from the first bus 101 or the second bus 102 to the third closing coil X3 and then to the neutral line 106.
The first interlock portion 1031, the second interlock portion 1041, and the third interlock portion 1051 may be provided by mechanical interlock, electrical interlock, or a combination of both. The mechanical interlocking is realized by generally using a steel wire rope, a lever or a link mechanism, realizing the interlocking relationship among the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105 by the change of mechanical positions, or adopting a breaker off position lock to match the same lock and two same keys for three breakers, so that the first interlocking part 1031, the second interlocking part 1041 and the third interlocking part 1051 are matched to realize that two breakers are in on positions; the electrical interlock is realized by arranging and combining a plurality of electrical elements inside the first interlock part 1031, the second interlock part 1041 and the third interlock part 1051 in an electrical connection manner, so that an interlock relationship is generated among the first incoming breaker 103, the second incoming breaker 104 and the interconnection breaker 105.
According to some embodiments of the present invention, the first, second and third interlocking parts 1031, 1041 and 1051 are each provided with four pins, two of which constitute a set of normally closed contacts,
after one of the normally closed contacts of the first interlock portion 1031 is connected in parallel with one of the normally closed contacts of the second interlock portion 1041, the normally closed contacts are connected to a closing circuit of the interconnection breaker 105;
after the other normally closed contact of the first interlocking part 1031 is connected in parallel with one of the normally closed contacts of the third interlocking part 1051, the other normally closed contact is connected into a closing loop of the second incoming line breaker 104;
after the other normally closed contact of the second interlocking section 1041 is connected in parallel with the other normally closed contact of the third interlocking section 1051, the other normally closed contact is connected to a closing loop of the first incoming line breaker 103.
Specifically, referring to fig. 4 and 5, four pins of the first interlocking part 1031 are 1031a, 1031b, 1031c, and 1031d, respectively, four pins of the second interlocking part 1041 are 1041a, 1041b, 1041c, and 1041d, respectively, and four pins of the third interlocking part 1051 are 1051a, 1051b, 1051c, and 1051d, respectively. After the pin 1041a is connected with the pin 1051a and the pin 1041b is connected with the pin 1051b, the pins are arranged in a closing loop of the first incoming line breaker 103; the pin 1031a is connected to the pin 1051c, and the pin 1031b is connected to the pin 1051d, and then arranged in the closing loop of the second incoming breaker 104. The pin 1031c is connected to the pin 1041c, and the pin 1031d is connected to the pin 1041d, and then disposed in the closing loop of the interconnection breaker 105. It should be understood that the normally closed contacts are closed when the corresponding breaker is opened and opened when the breaker is closed.
Based on the connection manner of the first interlocking part 1031, the second interlocking part 1041 and the third interlocking part 1051, in a state where both the second incoming line breaker 104 and the interconnection breaker 105 are closed, a closing loop of the first incoming line breaker 103 cannot form a current path because both normally closed contacts are open, and the first closing coil X1 cannot be powered on, so that the first incoming line breaker 103 cannot be closed; in the state that both the first incoming line breaker 103 and the interconnection breaker 105 are switched on, a switching-on loop of the second incoming line breaker 104 cannot form a current path because both normally closed contacts are disconnected, and the second switching-on coil X2 cannot get electricity, so that the second incoming line breaker 104 cannot be switched on; under the state that first inlet wire circuit breaker 103, second inlet wire circuit breaker 104 all closed a floodgate, the closed circuit of interconnection circuit breaker 105 is because two normally closed contacts all break off and can't form the current path, third closing coil X3 can't be electrified, consequently interconnection circuit breaker 105 can't close a floodgate, and then make first inlet wire circuit breaker 103, second inlet wire circuit breaker 104 and interconnection circuit breaker 105 three can't close a floodgate simultaneously, this kind of interlocking relation makes and inserts mutual isolation between the different transformers of low-voltage chamber 120, prevent that different power from being incorporated into the power networks and then produce the incident. The embodiment provides one of the electrical arrangement schemes of the first interlocking part 1031, the second interlocking part 1041 and the third interlocking part 1051, and the interlocking relationship among the first interlocking part 1031, the second interlocking part 1041 and the third interlocking part 1051 can also be realized by other schemes, which is not repeated herein.
Referring to fig. 1, according to some embodiments of the present invention, the box-type substation 100 further includes an interlock device 140 connecting the first incoming line breaker 103, the second incoming line breaker 104 and the tie breaker 105, so that the first incoming line breaker 103, the first incoming line breaker 103 and the tie breaker 105 cannot be switched on at the same time. Besides the interlocking parts arranged inside the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105, the interlocking among the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105 can be realized by additionally arranging an interlocking device 140. Optionally, the options for the interlock 140 include, but are not limited to, a mechanical interlock, a program interlock 141, and a relay interlock 142.
Referring to fig. 6, according to some embodiments of the present invention, an input 1411 of the program interlocker 141 is connected to the first incoming breaker 103, the second incoming breaker 104, and the interconnection breaker 105, and an output 1412 of the program interlocker 141 is connected to a closing coil and an opening coil of the three. The program interlocker 141 comprises a power supply end 1413, an input end 1411 and an output end 1412, wherein the power supply end 1413 supplies power for normal use of the program interlocker 141, the input end 1411 is connected with the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105 and is used for receiving switching-on or switching-off information of the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105, and the output end 1412 is connected with a switching-on coil and a switching-off coil of the first incoming line breaker, the second incoming line breaker 104 and the interconnection breaker 105 and is used for outputting a control current for switching-on or switching-off operation of the program interlocker 141 on a target breaker. In some embodiments of the present invention, a Programmable Logic Controller (PLC) is selected as the program interlocking device 141, and the PLC is called a Programmable Logic Controller (Programmable Logic Controller), which is a digital operation electronic system specially designed for application in an industrial environment. It uses a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes. The programmable controller is suitable to be used as the program interlocking device 141 in the utility model based on the characteristics of high reliability, easy programming, flexible configuration, complete input/output function modules, convenient installation, high running speed and the like, and is applied to interlocking control of the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105 in the box-type substation 100. Schemes for interlock control include, but are not limited to: the first incoming line breaker 103, the second incoming line breaker 104 and the interconnection breaker 105 cannot be switched on simultaneously; when any one of the first incoming line breaker 103 and the second incoming line breaker 104 is opened, the interconnection switch is closed.
Referring to fig. 7, according to some embodiments of the present invention, the relay interlock 142 includes a detection part 1421 and an action part 1422, the detection part 1421 is configured to detect on/off states of the first incoming line breaker 103, the second incoming line breaker 104, and the interconnection breaker 105, and the action part 1422 is connected to a closing loop of the first incoming line breaker 103, the second incoming line breaker 104, and the interconnection breaker 105. The relay interlock 142 is provided with a plurality of electric components and combines them, so that the first incoming breaker 103, the second incoming breaker 104, and the interconnection breaker 105 are interlocked with each other.
Referring to fig. 7, 8, the relay interlock 142 includes a first relay 1423, a second relay 1424, a third relay 1425, according to some embodiments of the present invention;
the control end of the first relay 1423 is connected to the first incoming line breaker 103, and the normally closed contact a and the normally closed contact B of the first relay 1423 are respectively arranged in the closing loops of the second incoming line breaker 104 and the interconnection breaker 105;
the control end of the second relay 1424 is connected to the second incoming line breaker 104, and the normally closed contact C and the normally closed contact D of the second relay 1424 are respectively arranged in the closing loops of the first incoming line breaker 103 and the interconnection breaker 105;
the control end of the third relay 1425 is connected to the interconnection breaker 105, and two normally closed contacts E and F of the interconnection relay are respectively arranged in the closing loops of the first incoming line breaker 103 and the second incoming line breaker 104;
a1 is connected with A2, F1 is connected with F2, and the normally closed contact A and the normally closed contact F are arranged in parallel;
b1 is connected with B2, D1 is connected with D2, and the normally closed contact B and the normally closed contact D are arranged in parallel;
c1 is connected to C2, E1 is connected to E2, and normally closed contact C is arranged in parallel with normally closed contact E.
It should be noted that the control end of the first relay 1423 is disposed in the line where the first incoming line breaker 103 is located, if the first incoming line breaker 103 enters a closed state and the second incoming line breaker 104 enters a closed state, the control end of the first relay 1423 detects that the line where the first incoming line breaker 103 is located is electrified, the normally closed contact a and the normally closed contact B are disconnected, the control end of the second relay 1424 is disposed in the line where the second incoming line breaker 104 is located, the control end of the second relay 1424 detects that the line where the second incoming line breaker 104 is located is electrified, the normally closed contact C and the normally closed contact D are disconnected, at this time, since the normally closed contact B and the normally closed contact D are connected in parallel to the closed circuit of the interconnection breaker 105, when the normally closed contact B and the normally closed contact D are both in an open state, the closed circuit of the interconnection breaker 105 is deenergized, and the third closing coil X3 cannot be electrified, and therefore the tie breaker 105 cannot close. Similarly, when the first incoming line breaker 103 enters a closing state and the interconnection breaker 105 enters a closing state, the closing loop of the second incoming line breaker 104 loses power, and the second closing coil X2 cannot get power, so that the second incoming line breaker 104 cannot close; when the second incoming line breaker 104 enters a closing state and the interconnection breaker 105 enters a closing state, the closing loop of the first incoming line breaker 103 loses power, and the first closing coil X1 cannot get power, so that the first incoming line breaker 103 cannot be closed. This embodiment makes first inlet wire breaker 103, second inlet wire breaker 104 and contact circuit breaker 105 three unable closing simultaneously through set up three relay in relay interlock 142 to realize relay interlock 142 to first inlet wire breaker 103, second inlet wire breaker 104, contact circuit breaker 105's interlocking effect.
Referring to fig. 5, according to some embodiments of the present invention, tie breaker 105 is configured with a tie relay that includes an energizing control terminal 1052, a normally closed contact G1053, and a normally open contact H1054, with the energizing control terminal 1052 connected to the tie breaker 105, the normally closed contact G1053 disposed in the line with the first bus 101 supplying power to the tie breaker 105, and the normally open contact H1054 disposed in the line with the second bus 102 supplying power to the tie breaker 105. It should be noted that the energizing control terminal 1052 is disposed in the line where the interconnection breaker 105 is located, when the interconnection breaker 105 is in the open state and the energizing control terminal 1052 is de-energized, the normally closed contact G1053 is closed, the normally open contact H1054 is opened, and at this time, the normally closed contact G1053 introduces the electric energy in the first bus 101 into the interconnection breaker 105. When the interconnection breaker 105 is in a closing state and the power-on control end 1052 is electrified, the normally closed contact G1053 is opened, and the normally open contact H1054 is closed, at the moment, the normally open contact H1054 introduces electric energy in the second bus 102 into the interconnection breaker 105. The embodiment provides a scheme for providing stable power supply for the interconnection breaker 105, wherein the first bus 101 supplies power to the interconnection breaker 105 in the process that the first transformer 131 is put into use, and if the first transformer 131 is out of service, the interconnection relay switches the power supply line of the interconnection breaker 105 to the second bus 102, so that the interconnection breaker 105 does not need to interrupt power supply due to the switching of the transformers.
Referring to fig. 5, according to some embodiments of the present invention, each of the first incoming breaker 103, the second incoming breaker 104 and the interconnection breaker 105 is configured with an energy storage motor 107 and an energy storage mechanism, the energy storage motor 107 is used for driving the energy storage mechanism, and the energy storage mechanism is connected with the switching springs of the first incoming breaker 103, the second incoming breaker 104 and the interconnection breaker 105 to compress or stretch the switching springs. The closing mechanism of the circuit breaker is actually a tripping mechanism, and the closing or opening of the circuit breaker requires the mechanism to provide enough operating energy, the energy storage mechanism stores energy (stretching or compressing) for the spring before closing and enables the mechanism to be stabilized at a dead point, and when the closing mechanism is closing, the energy storage mechanism is separated from the dead point to rapidly release the spring energy, so that closing is completed. And energy is stored for the opening spring while the switch is switched on, and the opening is completed when the opening mechanism is tripped. Therefore, the energy storage motor 107 and the energy storage mechanism can be used for accelerating the opening or closing speed and shortening the existing time of the arc. The energy storage motor 107 of the circuit breaker is an energy storage motor 107 (commonly called as a motor), and the electric operating mechanism comprises an electric operating mechanism and an electromagnetic operating mechanism, wherein the electric operating mechanism is driven by the motor and is generally suitable for the operation of the circuit breaker with large capacity of 400A or above; the electromagnetic operating mechanism is driven by an electromagnet and is suitable for small-capacity circuit breakers of 100A, 225A and the like.
Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. A box substation, comprising:
a high pressure chamber;
the low-pressure chamber comprises a first low-pressure cabinet and a second low-pressure cabinet;
the transformer chamber comprises a first transformer and a second transformer, and the high-voltage sides of the first transformer and the second transformer are both connected with the high-voltage chamber;
the first incoming line breaker is arranged on a first bus connecting the first transformer and the first low-voltage cabinet;
the second incoming line breaker is arranged on a second bus connecting the second transformer and the second low-voltage cabinet;
and the communication circuit breaker is arranged in a circuit connecting the first low-voltage cabinet and the second low-voltage cabinet.
2. The box substation of claim 1, wherein the first incoming circuit breaker comprises a first interlocking section, the second incoming circuit breaker comprises a second interlocking section, and the tie circuit breaker comprises a third interlocking section; first interlocking portion with second inlet wire circuit breaker contact the circuit breaker, second interlocking portion with first inlet wire circuit breaker contact the circuit breaker, third interlocking portion with first inlet wire circuit breaker contact the circuit breaker, second inlet wire circuit breaker connects, so that first inlet wire circuit breaker second inlet wire circuit breaker with contact the unable combined floodgate simultaneously of circuit breaker three.
3. The substation cabinet according to claim 2, wherein the first, second and third interlocking sections are each provided with four pins, two of which constitute a set of normally closed contacts,
after one of the normally closed contacts of the first interlocking part is connected in parallel with one of the normally closed contacts of the second interlocking part, the normally closed contacts of the first interlocking part are connected into a closing loop of the interconnection circuit breaker;
after the other normally closed contact of the first interlocking part is connected in parallel with one of the normally closed contacts of the third interlocking part, the other normally closed contact of the first interlocking part is connected into a closing loop of the second incoming line breaker;
and after the other normally closed contact of the second interlocking part is connected with the other normally closed contact of the third interlocking part in parallel, the other normally closed contact of the second interlocking part is connected into a closing loop of the first incoming line breaker.
4. The box-type substation of claim 1, further comprising an interlock device connecting the first incoming line breaker, the second incoming line breaker and the tie breaker such that the first incoming line breaker, the second incoming line breaker and the tie breaker cannot be closed at the same time.
5. A box substation according to claim 4, wherein the interlock is a mechanical interlock, a program interlock or a relay interlock.
6. The box-type substation of claim 5, characterized in that the input of the program interlocker is connected with the first incoming circuit breaker, the second incoming circuit breaker, the tie circuit breaker, and the output of the program interlocker is connected with the closing coil and the opening coil of the three.
7. The box-type substation of claim 5, wherein the relay interlocker comprises a detection portion and an action portion, the detection portion is used for detecting the on-off states of the first incoming line breaker, the second incoming line breaker and the interconnection breaker, and the action portion is connected with the closing loop of the first incoming line breaker, the second incoming line breaker and the interconnection breaker.
8. The box substation of claim 7, wherein the relay interlock comprises a first relay, a second relay, a third relay;
the control end of the first relay is connected with the first incoming line breaker, and a normally closed contact A and a normally closed contact B of the first relay are respectively arranged in the closing loops of the second incoming line breaker and the interconnection breaker;
the control end of the second relay is connected with the second incoming line breaker, and a normally closed contact C and a normally closed contact D of the second relay are respectively arranged in the closing loops of the first incoming line breaker and the interconnection breaker;
the control end of the third relay is connected with the interconnection circuit breaker, and two normally closed contacts E and F of the third relay are respectively arranged in the closing loops of the first incoming line circuit breaker and the second incoming line circuit breaker;
normally closed contact A with normally closed contact F sets up in parallel, normally closed contact B with normally closed contact D sets up in parallel, normally closed contact C with normally closed contact E sets up in parallel.
9. The box-type substation of claim 1, characterized in that the tie breaker is configured with a tie relay, the tie relay comprising a continuity control end, a normally closed contact G, a normally open contact H, the continuity control end being connected to the tie breaker, the normally closed contact G being disposed in the line in which the first bus supplies power to the tie breaker, the normally open contact H being disposed in the line in which the second bus supplies power to the tie breaker.
10. The box-type substation of claim 1, characterized in that the first incoming line breaker, the second incoming line breaker and the interconnection breaker are each provided with an energy storage motor and an energy storage mechanism, the energy storage motor is used for driving the energy storage mechanism, and the energy storage mechanism is connected with the switching springs of the first incoming line breaker, the second incoming line breaker and the interconnection breaker to compress or stretch the switching springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122707207.0U CN216720557U (en) | 2021-11-05 | 2021-11-05 | Box-type substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122707207.0U CN216720557U (en) | 2021-11-05 | 2021-11-05 | Box-type substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216720557U true CN216720557U (en) | 2022-06-10 |
Family
ID=81878436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122707207.0U Active CN216720557U (en) | 2021-11-05 | 2021-11-05 | Box-type substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216720557U (en) |
-
2021
- 2021-11-05 CN CN202122707207.0U patent/CN216720557U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201413939Y (en) | Electrical interlocking system of inlet wire and interconnection switch for switch apparatus | |
| CN103236362A (en) | PLC-based (programmable logic controller-based) knife switch control method and system | |
| CN104967206B (en) | Colliery low pressure double loop dual power supply permanent magnetism feed interconnection switch operating circuit | |
| CN214205087U (en) | Four-incoming-line one-bus-coupler interlocking system of low-voltage power distribution system | |
| CN206283258U (en) | A kind of contact of two inlet wire one shutting-brake control electrical structure and power distribution equipment | |
| CN216720557U (en) | Box-type substation | |
| CN209642333U (en) | A kind of breaker body unbalanced three-phase lines protection circuit | |
| CN202190004U (en) | Low voltage power distribution cabinet control circuit | |
| CN201075586Y (en) | Low-voltage distribution operating controller | |
| CN106663563A (en) | Switch | |
| CN208127882U (en) | One kind being used for Public residence switchgear house dual power supply available power operation control system | |
| CN209462086U (en) | A kind of energy storage boosting all-in-one machine | |
| CN2038275U (en) | Electromagnetic locking device with double electric power supply applicable to both inlet and outlet wire | |
| CN108321682B (en) | Power distribution cabinet interlocking control system and contact cabinet control circuit thereof | |
| CN106026348B (en) | Low voltage liaison net circuit system and its operating method | |
| CN216216058U (en) | Bus-tie switch and bus-tie cabinet | |
| CN201138726Y (en) | Electric appliance interlocking apparatus for multiple drawer type circuit breaker | |
| CN216216067U (en) | Quick power conversion system across voltage classes | |
| CN217335083U (en) | Dual-power supply system capable of interlocking, unlocking and avoiding asynchronous closing | |
| CN220043053U (en) | High-temperature reactor bus power switch locking structure and high-temperature gas cooled reactor system thereof | |
| CN210535572U (en) | Low-voltage three-incoming-line two-contact interlocking system | |
| CN207947643U (en) | A kind of mother cabinet electric control system | |
| CN215300141U (en) | Circuit about 110kV circuit breaker spare separating brake circuit | |
| CN108281966B (en) | Dual-power standby power supply operation control system for public building residential distribution room | |
| CN209001660U (en) | A kind of transformer and distribution power station power transfer device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |