CN214255090U - Power supply system of nuclear power station - Google Patents
Power supply system of nuclear power station Download PDFInfo
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- CN214255090U CN214255090U CN202022932816.1U CN202022932816U CN214255090U CN 214255090 U CN214255090 U CN 214255090U CN 202022932816 U CN202022932816 U CN 202022932816U CN 214255090 U CN214255090 U CN 214255090U
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Abstract
The utility model relates to a nuclear power station power supply system, include: a first distribution board, a second distribution board, a third distribution board, a first junction box and a second junction box; the first switchboard includes: the power supply device comprises a first power supply module, a second power supply module, a first bus section, a second bus section, a first switch, a second switch and a first bus coupler switch; the second panel includes: the third power supply module, the fourth power supply module, the third bus section, the fourth bus section, the third switch, the fourth switch and the second bus coupler switch; the third panel includes: the third bus-coupled switch is connected with the first bus-coupled switch and the seventh bus-coupled switch, and the fourth bus-coupled switch is connected with the sixth bus-coupled switch and the second bus-coupled switch. Implement the utility model discloses can improve the reliability of nuclear power supply with the low cost.
Description
Technical Field
The utility model relates to a nuclear power station technical field, more specifically say, relate to a nuclear power station power supply system.
Background
The grid-connected direct-current system of the main switch station of the nuclear power plant is responsible for providing direct-current power for a power transmission system and power distribution, alarm and fire control of the whole station, is an important system related to normal operation of the main switch station, safety of power transmission and power transmission of the power plant and even stability of a power grid, and is called as a 'universal source'. The load is restricted by non-large-scale power failure, and since the power station is put into operation, the grid-related direct current system has the problem of incapability of stopping and overhauling for a long time, particularly, the power station which continuously operates for more than years has serious equipment aging, and faults increase year by year. Meanwhile, the original design does not meet the requirement that the storage battery pack cannot quit operation under any condition. Therefore, the characteristics of the nuclear power plant are necessarily combined, a flexible power supply scheme of a grid-related direct current system is researched, the operation reliability of a main switch station is improved, and the safety and the stability of power transmission and transmission of the power plant are facilitated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned technical defect of prior art, a nuclear power station power supply system is provided.
The utility model provides a technical scheme that its technical problem adopted is: constructing a nuclear power plant power supply system comprising: a first distribution board, a second distribution board, a third distribution board, a first junction box and a second junction box;
the first panel includes: the power supply system comprises a first power supply module, a second power supply module, a first bus section connected with the first power supply module, a second bus section connected with the second power supply module, a first switch connected with the first bus section and the second bus section, a second switch connected with the second bus section and the first combiner box, and a first bus-bar switch connected with the second bus section;
the second panel includes: the power supply system comprises a third power supply module, a fourth power supply module, a third bus section connected with the third power supply module, a fourth bus section connected with the fourth power supply module, a third switch connected with the third bus section and the fourth bus section, a fourth switch connected with the fourth bus section and the second combiner box, and a second bus-bar switch connected with the fourth bus section;
the third panel includes: a fifth power supply module, a sixth power supply module, a fifth bus-section connecting the fifth power supply module, a sixth bus-section connecting the sixth power supply module, a fifth switch connecting the fifth bus-section and the sixth bus-section, a sixth switch connecting the sixth bus-section and the second combiner box, and a seventh switch, an eighth switch, and a seventh bus-section, the fifth bus-section being connected to the seventh bus-section via the seventh switch, the seventh bus-section being connected to the first combiner box via the eighth switch;
the third panel further comprises: and the third bus-bar switch is connected with the first bus-bar switch and the seventh bus-bar section, and the fourth bus-bar switch is connected with the sixth bus-bar section and the second bus-bar switch.
Preferably, the fifth switch and the seventh switch are interlock switches.
Preferably, the first combiner box comprises a first sub-combiner module and a second sub-combiner module, the second switch comprises a first sub-switch and a second sub-switch, the eighth switch comprises a third sub-switch and a fourth sub-switch, the second bus bar is connected with the first sub-combiner module through the first sub-switch, the second bus bar is connected with the second sub-combiner module through the second sub-switch, the seventh bus bar is connected with the first sub-combiner module through the third sub-switch, and the seventh bus bar is connected with the second sub-combiner module through the fourth sub-switch; and/or
The second collection flow box includes that the third sub converges module and the fourth sub module of converging, the fourth switch includes fifth sub switch and sixth sub switch, the sixth switch includes seventh sub switch and eighth sub switch, the fourth bus-bar section warp the fifth sub switch is connected the third sub module of converging, the fourth bus-bar section warp the sixth sub switch is connected the fourth sub module of converging, the sixth bus-bar section warp the seventh sub switch is connected the third sub module of converging, the sixth bus-bar section warp the eighth sub switch is connected the fourth sub module of converging.
Preferably, the first power supply module comprises a first accumulator circuit and a first charging circuit, the first accumulator circuit and the first charging circuit being connected to the first bus-section, respectively;
the third power supply module comprises a second storage battery circuit and a second charging circuit, and the second storage battery circuit and the second charging circuit are respectively connected with the third bus section;
the fifth power supply module comprises a third storage battery circuit and a third charging circuit, and the third storage battery circuit and the third charging circuit are respectively connected with the fifth bus section.
Preferably, the second power supply module includes a fourth charging circuit, the fourth power supply module includes a fifth charging circuit, and the sixth power supply module includes a sixth charging circuit.
Preferably, the first battery circuit, the second battery circuit and the third battery circuit are all 125V dc voltage outputs;
the first charging circuit, the second charging circuit, the third charging single circuit, the fourth charging circuit, the fifth charging circuit and the sixth charging circuit are 125V direct current charging circuits.
Preferably, the power supply system further comprises a fourth distribution board, a fifth distribution board and a third junction box;
the fourth panel includes: a seventh power supply module, an eighth bus-bar connecting the seventh power supply module, a ninth bus-bar connecting the eighth power supply module, a ninth switch connecting the eighth bus-bar and the ninth bus-bar, a tenth switch connecting the ninth bus-bar and the third combiner box, and a fifth buscouple switch connecting the ninth bus-bar;
the fifth panel includes: a ninth power supply module, a tenth bus-section connecting the ninth power supply module, and an eleventh switch, a twelfth switch, and an eleventh bus-section, the eleventh bus-section being connected to the tenth bus-section via the eleventh switch, the eleventh bus-section being connected to the third combiner box via the twelfth switch;
the fifth switchboard further comprises a sixth buscouple switch connected with the fifth buscouple switch.
Preferably, the third combiner box includes a fifth sub-combiner module and a sixth sub-combiner module, the tenth switch includes a ninth sub-switch and a tenth sub-switch, and the twelfth switch includes an eleventh sub-switch and a twelfth sub-switch;
the ninth bus bar section is connected with the fifth sub-convergence module through the ninth sub-switch, the ninth bus bar section is connected with the sixth sub-convergence module through the tenth sub-switch, the eleventh bus bar section is connected with the fifth sub-convergence module through the eleventh sub-switch, and the eleventh bus bar section is connected with the sixth sub-convergence module through the twelfth sub-switch.
Preferably, the seventh power supply module comprises a fourth accumulator circuit and a seventh charging circuit, which are connected to the eighth bus-section, respectively;
the ninth power supply module comprises a fifth storage battery circuit and an eighth charging circuit, and the fifth storage battery circuit and the eighth charging circuit are respectively connected with the tenth bus section;
the eighth power supply module includes a ninth charging circuit.
Preferably, the fourth battery circuit and the fifth battery circuit are both 48V dc output, and the seventh charging circuit, the eighth charging circuit and the ninth charging circuit are all 48V dc charging circuits.
Implement the utility model discloses a nuclear power station power supply system has following beneficial effect: the reliability of nuclear power supply can be improved at low cost.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic circuit diagram of an embodiment of a power supply system of a nuclear power plant according to the present invention;
fig. 2 is a schematic circuit diagram of another embodiment of the power supply system of the nuclear power plant according to the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of the power supply system of a nuclear power station of the present invention, the power supply system includes: a first switchboard 110, a second switchboard 120, a third switchboard 130, a first combiner box 210 and a second combiner box 220; the first distribution board 110 includes: a first power supply module 111, a second power supply module 112, a first bus-section a1 connecting the first power supply module 111, a second bus-section B1 connecting the second power supply module 112, a first switch 104a connecting the first bus-section a1 with the second bus-section B1, a second switch 106a connecting the second bus-section B1 with the first combiner box 210, and a first bus-tie switch 201a connecting the second bus-section B1; the second distribution board 120 includes: a third power supply module 121, a fourth power supply module 122, a third bus-section a2 connecting the third power supply module 121, a fourth bus-section B2 connecting the fourth power supply module 122, a third switch 104B connecting the third bus-section a2 with the fourth bus-section B2, a fourth switch 106B connecting the fourth bus-section B2 with the second combiner box 220, a second bus-tie switch 201B connecting the fourth bus-section B2; the third distribution board 130 includes: a fifth power supply module 131, a sixth power supply module 132, a fifth bus-section A3 connecting the fifth power supply module 131, a sixth bus-section C1 connecting the sixth power supply module 132, a fifth switch 105C connecting the fifth bus-section A3 with the sixth bus-section C1, sixth switches 603C, 722C connecting the sixth bus-section C1 with the second combiner box 220, and a seventh switch 104C, eighth switches 106C, 522C and a seventh bus-section B3, the fifth bus-section A3 being connected to the seventh bus-section B3 via the seventh switch 104C, the seventh bus-section B3 being connected to the first combiner box 210 via the eighth switches 106C, 522C; the third distribution board 130 further includes: a third busbar switch 201C connecting the first busbar switch 201a with the seventh busbar section B3, and a fourth busbar switch 601C connecting the sixth busbar section C1 with the second busbar switch 201B. Specifically, in the nuclear power plant power supply system, the first switchboard 110 is provided with two first bus-section a1 and a second bus-section B1 which are independent of each other, and the first bus-section a1 and the second bus-section B1 are connected by a first switch 104a, which can make the first bus-section a1 and the second bus-section B1 connected or disconnected by controlling the first switch 104a to be turned on or off. Wherein the first power module 111 is connected to the first bus-section a1, the first power module 111 can be controlled to supply power via the second bus-section B1 when the first switch 104a is conductive. The first busbar box 210 is connected to the second busbar section B1 through the second switch 106a, and the second busbar section B1 is powered on or off the first busbar box 210 by the on or off of the second switch 106 a. A third bus-section a2 and a fourth bus-section B2, which are independent of each other, are provided in the second switchboard 120, the third bus-section a2 and the fourth bus-section B2 being connected by a third switch 104B, which connects or disconnects the third bus-section a2 and the fourth bus-section B2 by the third switch 104B being switched off or on, wherein the third power supply module 121 is connected to the third bus-section a2, and wherein the third power supply module 121 is controllable to supply power via the fourth bus-section B2 when the third switch 104B is switched on. The second busbar box 220 is connected to the fourth bus-section B2 through the fourth switch 106B, and the fourth bus-section B2 is powered on or off the second busbar box 220 by turning on or off the fourth switch 106B. The third switchboard 130 is provided with a fifth, sixth and seventh bus-section A3, C1, B3, independent of each other, the fifth and sixth bus-sections A3, C1 being connected therebetween by a fifth switch 105C, which can connect or disconnect the fifth and sixth bus-sections A3, C1 by turning off or on the fifth switch 105C. Wherein the fifth power supply module 131 is connected to the fifth bus-section a3, the fifth power supply module 131 can be controlled to supply power via the sixth bus-section C1 when the fifth switch 105C is switched on. The second bus box 220 is connected to the sixth bus-section C1 via the sixth switch 603C, 722C, whereby the supply or disconnection of the second bus-section 220 from the sixth bus-section C1 is achieved by the sixth switch 603C, 722C being switched on or off. The connection between the fifth bus-section A3 and the seventh bus-section B3 is via a seventh switch 104c, which makes it possible to connect or disconnect the fifth bus-section A3 and the seventh bus-section B3 by switching the seventh switch 104c off or on. When the seventh switch 104c is conductive, the fifth power supply module 131 can be controlled to supply power via the seventh bus-section B3. The first bus box 210 is connected to the seventh bus-section B3 via the eighth switch 106c, 522c, and the seventh bus-section B3 is powered on or off the first bus-box 210 by the eighth switch 106c, 522c being turned on or off. The first combiner box 210 and the second combiner box 220 are both connected to corresponding loads of the nuclear power plant, and power is supplied to the corresponding loads through the combiner boxes. The seventh bus-section B3 is connected to the second bus-section B1 via the third buscouple switch 201C and the first buscouple switch 201a, and the sixth bus-section C1 is connected to the fourth bus-section B2 via the fourth buscouple switch 601C and the second buscouple switch 201B.
Which normally the first busbar box 210 is powered via the second bus-section B1 in the first power disc and the second busbar box 220 is powered via the fourth bus-section B2 of the second power disc.
When the first power supply module 111 in the first switchboard 110 needs to be serviced, the third buscouple switch 201c and the first buscouple switch 201a can be switched on, the seventh switch 104c can be switched on, the second switches 106a and 522c connecting the second bus bar section B1 and the first bus box 210 can be kept on, and the eighth switches 106c and 522c connecting the seventh bus bar section B3 and the first bus box 210 can be switched off, so that the first bus box 210 can be powered through the fifth power supply module 131 and the seventh bus bar section B3. Meanwhile, the first switch 104a is turned off, the first power supply module 111 is isolated to overhaul the first power supply module 111, and the access load of the first combiner box 210 is not affected.
When the third power supply module 121 of the second switchboard 120 needs to be serviced, the second busbar switch 201B and the fourth busbar switch 601C can be switched on, the fifth switch 105C can be switched on, the fourth bus bar section B2 and the fourth switch 106B of the second combiner box 220 can be kept on, and the sixth switches 603C and 722C connecting the sixth bus bar section C1 and the second combiner box 220 can be switched off, so that the second combiner box 220 can be powered through the fifth power supply module 131 and the sixth bus bar section C1. Meanwhile, the third switch 104b may be turned off, and the third power supply module 121 may be isolated to repair the third power supply module 121, without affecting the load connected to the first combiner box 220.
Optionally, the fifth switch 105c and the seventh switch 104c are interlock switches. In particular, in order to avoid the connection of the second bus bar B1 in the first switchboard 110 with the fourth switchboard 140 in the second switchboard 120, the fifth switch 105c and the seventh switch 104c, which are connected to the fifth bus bar A3, are interlocked by an interlocking function such that the fifth switch 105c and the seventh switch 104c cannot be switched on simultaneously, i.e. they cannot be switched on simultaneously, but they can be set to be switched off simultaneously.
In an embodiment, the first combiner box 210 comprises a first sub-combiner module and a second sub-combiner module, the second switches 106a, 522a comprise a first sub-switch and a second sub-switch, the eighth switches 106c, 522c comprise a third sub-switch and a fourth sub-switch, the second bus-bar segment B1 is connected to the first sub-combiner module via the first sub-switch, the second bus-bar segment B1 is connected to the second sub-combiner module via the second sub-switch, the seventh bus-bar segment B3 is connected to the first sub-combiner module via the third sub-switch, and the seventh bus-bar segment B3 is connected to the second sub-combiner module via the fourth sub-switch; specifically, a plurality of first sub-bus modules and second sub-bus modules may be disposed in the first bus box 210, so as to balance the current of the load. It can be understood that the number of the first sub-bus module and the second sub-bus module may be multiple, and the number of the first sub-switch and the second sub-switch may also be multiple, which may be set according to the requirement of the load, in some embodiments, the number of the first bus box may also be multiple, and the multiple first sub-bus modules and the multiple second sub-bus modules are respectively disposed in different bus boxes.
In an embodiment, the second combiner box 220 comprises a third and a fourth sub-combiner module, the fourth switches 106B, 322B comprise a fifth and a sixth sub-switch, the sixth switches 603C, 722C comprise a seventh and an eighth sub-switch, the fourth bus bar segment B2 is connected to the third sub-combiner module via the fifth sub-switch, the fourth bus bar segment B2 is connected to the fourth sub-combiner module via the sixth sub-switch, the sixth bus bar segment C1 is connected to the third sub-combiner module via the seventh sub-switch, and the sixth bus bar segment C1 is connected to the fourth sub-combiner module via the eighth sub-switch. Specifically, a plurality of bus modules, such as a plurality of third sub bus modules and a plurality of fourth sub bus modules, may be disposed in the second bus box 220 to achieve current balancing of the loads. In some embodiments, the number of the second combiner boxes may also be multiple, and multiple third sub combiner modules and multiple fourth sub combiner modules are respectively disposed in different combiner boxes.
In one embodiment, the first power module 111 includes a first battery circuit LBM001BT and a first charging circuit LLM606, the first battery circuit LBM001BT and the first charging circuit LLM606 being connected to the first bus-section A1, respectively; the third power module 121 includes a second battery circuit LBN001BT and a second charging circuit LKQ305, the second battery circuit LBN001BT and the second charging circuit LKQ305 being connected to the third bus-section A2, respectively; the fifth power supply module 131 includes a third battery circuit LBP001BT and a third charging circuit LLM604, which are respectively connected to the fifth bus-section A3. When the first switchboard 110 needs to be serviced, the third busbar switch 201c is kept off from the first busbar switch 201a, the seventh switch 104c is switched on, the eighth switches 106c, 522c connecting the seventh bus-section B3 and the first combiner box 210 are switched on, and the load is supplied by the second bus-section B1 and the seventh bus-section B3 at the same time for a short time. And turns off the second switches 106a, 522c connecting the second bus bar section B1 and the first combiner box 210, and turns off the first charging circuit LLM606 and the fourth charging circuit LKQ306 of the first switchboard 110, and unplugs all the fast plugs of the cables on the first combiner box 210 side of the first switchboard 110, achieving a significant breakpoint isolation, so that the first combiner box 210 is powered through the fifth power supply module 131 and the seventh bus bar section B3, i.e. the third switchboard 130. After the first switchboard 110 is overhauled, the load is supplied by the first switchboard 110 instead through the reverse operation, and the normal operation is recovered.
In one embodiment, the second power module 112 includes a fourth charging circuit LKQ306, the fourth power module 121 includes a fifth charging circuit LKR605, and the sixth power module 131 includes a sixth charging circuit LKQ 304. When the second switchboard 120 needs to be serviced, the fourth busbar switch 601C and the second busbar switch 201B are kept off, the fifth switch 105C is switched on, the sixth switches 603C and 722C connecting the sixth bus bar C1 and the second combiner box 220 are switched on, and the load is supplied by the fourth bus bar B2 and the sixth bus bar C1 at the same time in a short time. And the fourth switches 106B and 322C connecting the fourth bus bar section B2 and the second bus bar box 220 are turned off, the second charging circuit LKQ305 and the fifth charging circuit LKR605 of the first switchboard 120 are turned off, and the quick plugs of all cables on the second bus bar box 220 at the second switchboard 120 side are unplugged, so that obvious breakpoint isolation is realized, and the second bus bar box 220 is powered through the fifth power supply module 131 and the sixth bus bar section C1, that is, the third switchboard 130. After the second switchboard 120 is overhauled, the load is supplied by the second switchboard 120 instead by the reverse operation, and the normal operation is recovered.
In one embodiment, first battery circuit LBM001BT, second battery circuit LBN001BT, and third battery circuit LBP001BT are all 125V dc voltage outputs; the first charging circuit LLM606, the second charging circuit LKQ305, the third charging circuit LLM604, the fourth charging circuit LKQ306, the fifth charging circuit LKR605 and the sixth charging circuit LKQ304 are 125V dc charging circuits. The first switchboard 110 is applied to the LBM system of the nuclear power plant, and the second switchboard 120 is applied to the LBN system of the nuclear power plant, which are respectively used to provide 125V dc output, which are power supply systems of the TC plant main switching station. Two sets of combiner boxes corresponding to the first switchboard 110, LBM001CR and LBM001CR, respectively, are provided, one set of combiner boxes corresponding to the second switchboard 120, LBN001 CR.
As shown in fig. 2, in an embodiment, the power supply system further includes a fourth distribution board 140, a fifth distribution board 150, and a third combiner box 230; the fourth distribution board 140 includes: a seventh power supply module 141, an eighth power supply module 142, an eighth bus-section a4 connecting the seventh power supply module 141, a ninth bus-section B4 connecting the eighth power supply module 142, a ninth switch 104d connecting the eighth bus-section a4 with the ninth bus-section B4, tenth switches 107d, 218d connecting the ninth bus-section B4 with the third combiner box 230, and a fifth bus-tie switch 201d connecting the ninth bus-section B4; the fifth distribution board 150 includes: a ninth power supply module 151, a tenth bus-section a5 connected to the ninth power supply module 151, and eleventh, twelfth and eleventh switches 104e, 107e, 218e, B5, the eleventh bus-section B5 being connected to the tenth bus-section a5 via the eleventh switch 104e, the eleventh bus-section B5 being connected to the third bus-box 230 via the twelfth switches 107e, 218 e; the fifth switchboard 150 further comprises a sixth ganged switch 201e connected to the fifth ganged switch 201 d. Specifically, an eighth bus-section a4 and a ninth bus-section B4 are provided in the fourth switchboard 140, which are independent of each other, the eighth bus-section a4 and the ninth bus-section B4 are connected by a ninth switch 104d, which connects or disconnects the eighth bus-section a4 and the ninth bus-section B4 by the ninth switch 104d being turned off or on, wherein the seventh power supply module 141 is connected to the eighth bus-section a4, and when the ninth switch 104d is turned on, the seventh power supply module 141 can be controlled to supply power through the ninth bus-section B4. The third bus bar box 230 is connected to the ninth bus bar segment B4 through the tenth switches 107d, 218d, and power supply to the third bus bar box 230 from the ninth bus bar segment B4 is enabled or disabled by turning on or off the tenth switches 107d, 218 d. A tenth bus-section a5 and an eleventh bus-section B5, which are independent of each other, are provided in the fifth switchboard 150, the tenth bus-section a5 and the eleventh bus-section B5 are connected by an eleventh switch 104e, which connects or disconnects the tenth bus-section a5 and the eleventh bus-section B5 by switching off or on the eleventh switch 104e, wherein the ninth power supply module 151 is connected to the tenth bus-section a5, and when the eleventh switch 104e is switched on, the ninth power supply module 151 is controlled to supply power through the eleventh bus-section B5. The third bus box 230 is connected to the eleventh bus-section B5 through the twelfth switch, and the eleventh bus-section B5 is powered on or off the third bus-box 230 by turning on or off the twelfth switches 107e, 218 e. The ninth bus-section B4 is connected to the eleventh bus-section B5 via a fifth busbar switch 201d and a sixth busbar switch 201 e. Which normally supplies the third combiner box 230 via the ninth bus-section B4 in the third supply tray.
When the seventh power supply module 141 in the fourth switchboard 140 needs to be overhauled, the fifth and sixth bus bar switches 201d and 201e can be switched on, the eleventh switch 104e can be switched on, the ninth bus bar section B4 and the tenth switches 107d and 218d of the third combiner box 230 are kept on, and the twelfth switches 107e and 218e connecting the eleventh bus bar section B5 and the third combiner box 230 are turned off, so that the third combiner box 230 is powered through the ninth and eleventh power supply modules 151 and B5. And meanwhile, the ninth switch 104d is turned off, so that the seventh power supply module 141 is isolated to repair the seventh power supply module 141, and the load connected to the third combiner box 230 is not affected.
The third bus bar box 230 includes fifth and sixth sub bus modules, the tenth switches 107d, 218d include ninth and tenth sub switches, and the twelfth switches 107e, 218e include eleventh and twelfth sub switches; the ninth bus-section B4 is connected to the fifth sub bus module via a ninth sub-switch, the ninth bus-section B4 is connected to the sixth sub bus module via a tenth sub-switch, the eleventh bus-section B5 is connected to the fifth sub bus module via an eleventh sub-switch, and the eleventh bus-section B5 is connected to the sixth sub bus module via a twelfth sub-switch. Specifically, a plurality of fifth sub bus modules and sixth sub bus modules may be disposed in the third bus box 230, so as to balance the current of the load. In some embodiments, the number of the third combiner boxes may also be multiple, and a plurality of fifth sub combiner modules and sixth sub combiner modules are respectively disposed in different combiner boxes.
In an embodiment, the seventh power module 141 comprises a fourth battery circuit 0LCM001BT and a seventh charging circuit 0LLM607, the fourth battery circuit 0LCM001BT and the seventh charging circuit 0LLM607 being connected to the eighth bus-section a4, respectively; the ninth power supply module 151 comprises a fifth battery circuit 0LCP001BT and an eighth charging circuit 0LLM608, the fifth battery circuit 0LCP001BT and the eighth charging circuit 0LLM608 being connected to the tenth bus-section a5, respectively; the eighth power supply module 142 includes a ninth charging circuit 0LKQ 307.
In one embodiment, the fourth battery circuit 0LCM001BT and the fifth battery circuit 0LCP001BT are 48V dc outputs, and the seventh charging circuit 0LLM607, the eighth charging circuit 0LLM608, and the ninth charging circuit 0LKQ307 are 48V dc charging circuits. The fourth distribution board 140 is applied to an LCM system of a nuclear power plant, and is used to provide a 48V dc output. Which is a power supply system of a main switching station of a TC plant. When the fourth switchboard 140 needs to be serviced, the fifth and sixth bus-coupled switches 201d and 201e are kept off, the eleventh switch 104e is switched on, and the twelfth switches 107e and 218e connecting the eleventh bus-section B5 and the third combiner box 230 are switched on, and the ninth bus-section B4 and the eleventh bus-section B5 supply power simultaneously in a short time. And turns off the tenth switches 107d, 218d connecting the ninth bus bar section B4 and the third combiner box 230, and turns off the seventh charging circuit 0LLM607 and the ninth charging circuit 0LKQ307 of the fourth switchboard 140, and unplugs all the fast plugs of the cables on the fourth switchboard 140 side on the third combiner box 230, achieving a significant breakpoint isolation, so that the fourth switchboard 140 is powered through the ninth power supply module 151 and the eleventh bus bar section B5, i.e. the fifth switchboard 150. After the fourth switchboard 140 is overhauled, the reverse operation is performed to supply power to the load from the fourth switchboard 140, and the normal operation is recovered.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A nuclear power plant power supply system, comprising: a first distribution board, a second distribution board, a third distribution board, a first junction box and a second junction box;
the first panel includes: the power supply system comprises a first power supply module, a second power supply module, a first bus section connected with the first power supply module, a second bus section connected with the second power supply module, a first switch connected with the first bus section and the second bus section, a second switch connected with the second bus section and the first combiner box, and a first bus-bar switch connected with the second bus section;
the second panel includes: the power supply system comprises a third power supply module, a fourth power supply module, a third bus section connected with the third power supply module, a fourth bus section connected with the fourth power supply module, a third switch connected with the third bus section and the fourth bus section, a fourth switch connected with the fourth bus section and the second combiner box, and a second bus-bar switch connected with the fourth bus section;
the third panel includes: a fifth power supply module, a sixth power supply module, a fifth bus-section connecting the fifth power supply module, a sixth bus-section connecting the sixth power supply module, a fifth switch connecting the fifth bus-section with the sixth bus-section, and a sixth switch connecting the sixth bus-section with the second combiner box, and a seventh switch, an eighth switch, and a seventh bus-section, the fifth bus-section being connected to the seventh bus-section via the seventh switch, the seventh bus-section being connected to the first combiner box via the eighth switch;
the third panel further comprises: and the third bus coupler switch is connected with the first bus coupler switch and the seventh bus coupler switch, and the fourth bus coupler switch is connected with the sixth bus coupler switch and the second bus coupler switch.
2. The nuclear power plant power supply system of claim 1, wherein the fifth switch and the seventh switch are interlock switches.
3. Nuclear power plant power supply system according to claim 1,
the first combiner box comprises a first sub-combiner module and a second sub-combiner module, the second switch comprises a first sub-switch and a second sub-switch, the eighth switch comprises a third sub-switch and a fourth sub-switch, the second bus section is connected with the first sub-combiner module through the first sub-switch, the second bus section is connected with the second sub-combiner module through the second sub-switch, the seventh bus section is connected with the first sub-combiner module through the third sub-switch, and the seventh bus section is connected with the second sub-combiner module through the fourth sub-switch; and/or
The second collection flow box includes that the third sub converges module and the fourth sub module of converging, the fourth switch includes fifth sub switch and sixth sub switch, the sixth switch includes seventh sub switch and eighth sub switch, the fourth bus-bar section warp the fifth sub switch is connected the third sub module of converging, the fourth bus-bar section warp the sixth sub switch is connected the fourth sub module of converging, the sixth bus-bar section warp the seventh sub switch is connected the third sub module of converging, the sixth bus-bar section warp the eighth sub switch is connected the fourth sub module of converging.
4. The nuclear power plant power supply system of claim 1, wherein the first power supply module includes a first battery circuit and a first charging circuit, the first battery circuit and the first charging circuit being connected to the first bus-section, respectively;
the third power supply module comprises a second storage battery circuit and a second charging circuit, and the second storage battery circuit and the second charging circuit are respectively connected with the third bus section;
the fifth power supply module comprises a third storage battery circuit and a third charging circuit, and the third storage battery circuit and the third charging circuit are respectively connected with the fifth bus section.
5. The nuclear power plant power supply system of claim 4, wherein the second power supply module includes a fourth charging circuit, the fourth power supply module includes a fifth charging circuit, and the sixth power supply module includes a sixth charging circuit.
6. The nuclear power plant supply system of claim 5, wherein the first battery circuit, the second battery circuit, and the third battery circuit are each 125V DC voltage outputs;
the first charging circuit, the second charging circuit, the third charging circuit, the fourth charging circuit, the fifth charging circuit and the sixth charging circuit are 125V direct current charging circuits.
7. The nuclear power plant electrical power supply system of claim 1, further comprising a fourth distribution board, a fifth distribution board, and a third combiner box;
the fourth panel includes: a seventh power supply module, an eighth bus-bar connecting the seventh power supply module, a ninth bus-bar connecting the eighth power supply module, a ninth switch connecting the eighth bus-bar and the ninth bus-bar, a tenth switch connecting the ninth bus-bar and the third combiner box, and a fifth buscouple switch connecting the ninth bus-bar;
the fifth panel includes: a ninth power supply module, a tenth bus-section connecting the ninth power supply module, and an eleventh switch, a twelfth switch, and an eleventh bus-section, the eleventh bus-section being connected to the tenth bus-section via the eleventh switch, the eleventh bus-section being connected to the third combiner box via the twelfth switch;
the fifth switchboard further comprises a sixth buscouple switch connected with the fifth buscouple switch.
8. The nuclear power plant electrical supply system of claim 7, wherein the third combiner box includes a fifth sub-combiner module and a sixth sub-combiner module, the tenth switch includes a ninth sub-switch and a tenth sub-switch, and the twelfth switch includes an eleventh sub-switch and a twelfth sub-switch;
the ninth bus bar section is connected with the fifth sub-convergence module through the ninth sub-switch, the ninth bus bar section is connected with the sixth sub-convergence module through the tenth sub-switch, the eleventh bus bar section is connected with the fifth sub-convergence module through the eleventh sub-switch, and the eleventh bus bar section is connected with the sixth sub-convergence module through the twelfth sub-switch.
9. Nuclear power plant power supply system according to claim 7,
the seventh power supply module comprises a fourth storage battery circuit and a seventh charging circuit, and the fourth storage battery circuit and the seventh charging circuit are respectively connected with the eighth bus section;
the ninth power supply module comprises a fifth storage battery circuit and an eighth charging circuit, and the fifth storage battery circuit and the eighth charging circuit are respectively connected with the tenth bus section;
the eighth power supply module includes a ninth charging circuit.
10. The nuclear power plant power supply system of claim 9, wherein the fourth battery circuit and the fifth battery circuit are each 48V dc output, and the seventh charging circuit, the eighth charging circuit, and the ninth charging circuit are each 48V dc charging circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022932816.1U CN214255090U (en) | 2020-12-09 | 2020-12-09 | Power supply system of nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022932816.1U CN214255090U (en) | 2020-12-09 | 2020-12-09 | Power supply system of nuclear power station |
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| CN214255090U true CN214255090U (en) | 2021-09-21 |
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| CN202022932816.1U Active CN214255090U (en) | 2020-12-09 | 2020-12-09 | Power supply system of nuclear power station |
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| CN (1) | CN214255090U (en) |
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