CN113341206B - Method and device for determining steps of GIS double-bus parallel current - Google Patents
Method and device for determining steps of GIS double-bus parallel current Download PDFInfo
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- CN113341206B CN113341206B CN202110687703.6A CN202110687703A CN113341206B CN 113341206 B CN113341206 B CN 113341206B CN 202110687703 A CN202110687703 A CN 202110687703A CN 113341206 B CN113341206 B CN 113341206B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
Abstract
The invention discloses a method and a device for determining step by step of GIS double-bus parallel current, which are used for calculating three-phase current flowing through a bus tie theory based on data reports obtained by a transformer substation monitoring system and basic data related to double buses in a database, and further assisting in judging whether bad contact hidden danger exists between loops formed by parallel intervals and bus ties.
Description
Technical Field
The invention relates to the technical field of electric power technology, in particular to a method and a device for determining parallel currents of GIS double buses step by step.
Background
The totally-enclosed combined electrical apparatus GIS is applied to the transformer substation extensively. Because GIS equipment metal is totally closed, it is difficult to adopt measures such as direct visual observation, infrared temperature measurement during operation to judge the insertion depth of the connector conductor, the in-place condition of the breaker and the disconnecting link and the contact condition of each contact surface. The insertion depth of the joint conductor is insufficient and the contact is poor in operation; the circuit breaker and the isolating switch have the condition that the position indication is in place, but an actual moving contact does not move in place, the moving contact and the static contact are in poor contact or even open circuit, the safety of a power grid is seriously threatened due to the defects, the occurrence of internal fault accidents of a plurality of GIS equipment is caused, and the problem is more prominent in the process of changing the operation mode of the double-bus inverted bus of the GIS and the double-section wiring of the GIS.
Whether the current distribution condition of the parallel loop is normal or not is an effective auxiliary criterion for judging whether the parallel loop is good or not, such as main transformer paralleling, splitting and switch circuit replacement operation, the current distribution condition of the parallel loop is checked and is listed as one of operation tasks in an operation ticket, and the parallel loop current distribution condition plays a good role.
Three-phase current transformers are installed at the interval of the two-bus line connection mode of the human-bus connection, real-time current data monitoring is carried out, in the process of bus inversion, when two parallel points exist in the two buses, whether current distribution of the parallel points is normal or not does not have a uniform judgment basis, and the judgment can only be determined by whether current of the interval of the two parallel buses is changed or not, and the qualitative judgment is too coarse, so that the judgment is easily missed.
Disclosure of Invention
The invention provides a method and a device for determining step by step of GIS double-bus parallel current, which are used for calculating the three-phase current flowing through a bus tie theory based on a data report obtained by a transformer substation monitoring system and basic data related to double buses in a database, and further assisting in judging whether the hidden danger of poor contact exists between loops formed by parallel intervals and bus ties.
In a first aspect, the invention provides a method for determining step by step of GIS double-bus parallel current, which comprises the following steps:
acquiring a data report of a target double bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database;
determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to a 1M bus and the distance from the bus disconnecting link junction point to a 2M bus of the parallel intervals;
according to the distance from the bus disconnecting link junction point to the 1M bus at the parallel interval, the distance from the bus disconnecting link junction point to the 2M bus at the parallel interval and the numerical value, determining bus section distances of the parallel intervals of all outgoing lines and disconnecting links, and determining a loop distance based on the bus section distances;
and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report.
Optionally, before calculating the branch current and the total current of the outgoing line respectively based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current in the data report by combining a calculation formula of the bus tie branch current, the method further includes:
defining the positive and negative directions of the active data of each outgoing line in the data report; defining an active numerical value 1 corresponding to active data in the positive direction; the active value-1 corresponding to the active data in the negative direction;
the method comprises the following steps of respectively calculating branch current and total current of the outgoing line based on the bus section distance, the loop distance, the disconnecting link remote signaling and three-phase current and active data in the data report by combining a calculation formula of bus-coupled branch current, and specifically comprises the following steps:
and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the three-phase current in the data report and the active numerical value in the remote signaling of the disconnecting link.
Optionally, the disconnecting link remote signaling comprises 1M disconnecting link remote signaling and 2M disconnecting link remote signaling; determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report, comprising:
respectively determining a bus disconnecting link value according to the disconnecting link remote signaling; the bus disconnecting link value comprises: 1M bus disconnecting link value and 2M bus disconnecting link value;
and calculating the 1M bus disconnecting link value and the 2M bus disconnecting link value to determine whether the outgoing lines have parallel intervals.
Optionally, after calculating the outgoing branch current and the outgoing total current respectively according to the bus segment distance, the loop distance, the three-phase current in the data report and the active value in the knife switch remote signaling and a calculation formula of the bus-coupled branch current, the method further includes:
and respectively judging the percentage of the phase difference between the branch current and the total current of the outgoing line and the corresponding measured value.
In a second aspect, the present invention further provides a device for determining the step of the parallel current of the GIS double buses, including:
the acquisition module is used for acquiring a data report of a target double bus from the transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database;
the parallel interval determining module is used for determining whether the outgoing line has parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
the first distance determining module is used for calculating the distance from the bus disconnecting link junction point to the 1M bus and the distance from the bus disconnecting link junction point to the 2M bus in the parallel interval under the condition that the parallel interval exists;
the second distance determining module is used for determining bus section distances of all outgoing lines and disconnecting links at parallel intervals according to the bus section distance between the bus disconnecting link junction point and the 1M bus, the bus disconnecting link junction point and the 2M bus and the numerical value of the parallel intervals, and determining the loop distance based on the bus section distances;
and the current calculation module is used for calculating the branch current and the total current of the outgoing line respectively based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report by combining a calculation formula of the bus-coupled branch current.
Optionally, the apparatus further comprises:
the direction defining module is used for defining the positive and negative directions of the active data of each outgoing line in the data report; defining an active numerical value 1 corresponding to active data in the positive direction; the active value-1 corresponding to the active data in the negative direction;
the current calculation module is specifically configured to:
and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the three-phase current in the data report and the active numerical value in the remote signaling of the disconnecting link.
Optionally, the disconnecting link remote signaling comprises 1M disconnecting link remote signaling and 2M disconnecting link remote signaling; the parallel interval determination module includes:
the bus disconnecting link value determining submodule is used for determining a bus disconnecting link value according to the disconnecting link remote signaling; the bus disconnecting link value comprises: 1M bus disconnecting link value and 2M bus disconnecting link value;
a parallel interval determination submodule configured to calculate the 1M bus disconnecting link value and the 2M bus disconnecting link value, and determine that each of the devices further includes:
and the judging submodule is used for respectively judging the percentage of the phase difference between the branch current and the total current of the outgoing line and the corresponding measured value.
In a third aspect, the present invention provides an electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the method according to the first aspect.
In a fourth aspect, the present invention provides a readable storage medium on which is stored a program or instructions which, when executed by a processor, performs the steps of the method according to the first aspect.
According to the technical scheme, the invention has the following advantages:
the method comprises the steps of obtaining a data report of a target double bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database; determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1; under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to a 1M bus and the distance from the bus disconnecting link junction point to a 2M bus of the parallel intervals; according to the distance from the bus disconnecting link junction point to the 1M bus at the parallel interval, the distance from the bus disconnecting link junction point to the 2M bus at the parallel interval and the numerical value, determining bus section distances of the parallel intervals of all outgoing lines and disconnecting links, and determining a loop distance based on the bus section distances; and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report. And calculating three-phase current flowing through a bus tie theory based on a data report obtained by the transformer substation monitoring system and basic data related to double buses in a database, and further assisting in judging whether the hidden danger of poor contact exists between loops formed by parallel intervals and bus ties.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a flowchart of a step of a first embodiment of a method for determining GIS double-bus parallel current step-by-step according to the present invention;
FIG. 2 is a flowchart of the second step of the GIS double-bus parallel current step determination method of the present invention;
FIG. 3 is a 6-line double-bus diagram of an example of a GIS double-bus parallel current step determination method of the present invention;
fig. 4 is a block diagram of an embodiment of the device for determining the parallel current step of the GIS double bus according to the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for determining step by step of GIS double-bus parallel current, which are used for calculating the three-phase current flowing through a bus-tie theory based on a data report obtained by a transformer substation monitoring system and basic data related to double buses in a database, and further assisting in judging whether the hidden danger of poor contact exists between loops formed by parallel intervals and bus-ties.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a first step of a method for determining a step of a GIS double-bus parallel current according to a first embodiment of the present invention, including:
step S101, acquiring a data report of a target double bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database;
step S102, determining whether the outgoing lines have parallel intervals or not based on the disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
step S103, under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to a 1M bus and the distance from the bus disconnecting link junction point to a 2M bus of the parallel intervals;
step S104, determining bus section distances of all outgoing lines and disconnecting links at parallel intervals according to the distance from the bus disconnecting link junction point to the 1M bus, the distance from the bus disconnecting link junction point to the 2M bus and the numerical value of the parallel intervals, and determining the loop distance based on the bus section distances;
and S105, respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus-section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report.
In the embodiment of the invention, a data report of a target double bus is obtained from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database; determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1; under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to a 1M bus and the distance from the bus disconnecting link junction point to a 2M bus of the parallel intervals; according to the distance from the bus disconnecting link junction point to the 1M bus at the parallel interval, the distance from the bus disconnecting link junction point to the 2M bus at the parallel interval and the numerical value, determining bus section distances of the parallel intervals of all outgoing lines and disconnecting links, and determining a loop distance based on the bus section distances; and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report. And calculating three-phase current flowing through a bus tie theory based on a data report obtained by the transformer substation monitoring system and basic data related to double buses in a database, and further assisting in judging whether the hidden danger of poor contact exists between loops formed by parallel intervals and bus ties.
Referring to fig. 2, a flowchart of a second step of the method for determining a GIS double-bus parallel current step according to the embodiment of the present invention specifically includes:
step S201, acquiring a data report of a target double bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database; the disconnecting link remote signaling comprises 1M disconnecting link remote signaling and 2M disconnecting link remote signaling;
step S202, determining a bus disconnecting link value according to the disconnecting link remote signaling; the bus disconnecting link value comprises: 1M bus disconnecting link value and 2M bus disconnecting link value;
step S203, calculating the 1M bus disconnecting link value and the 2M bus disconnecting link value, and determining whether each outgoing line has a parallel interval; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
step S204, under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to the 1M bus and the distance from the bus disconnecting link junction point to the 2M bus of the parallel intervals;
step S205, determining bus section distances of all outgoing lines and disconnecting links at parallel intervals according to the distance from the bus disconnecting link junction point to the 1M bus, the distance from the bus disconnecting link junction point to the 2M bus and the numerical value of the parallel intervals, and determining the loop distance based on the bus section distances;
step S206, defining the positive and negative directions of the active data of each outgoing line in the data report; defining an active numerical value 1 corresponding to active data in the positive direction; the active value-1 corresponding to the active data in the negative direction;
and S207, respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the three-phase current in the data report and the active numerical value in the remote signaling of the disconnecting link.
The method for determining the step by step of the GIS double-bus parallel current provided by the embodiment of the invention comprises the steps of obtaining a data report of a target double-bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database; determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1; under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to a 1M bus and the distance from the bus disconnecting link junction point to a 2M bus of the parallel intervals; according to the distance from the bus disconnecting link junction point to the 1M bus at the parallel interval, the distance from the bus disconnecting link junction point to the 2M bus at the parallel interval and the numerical value, determining bus section distances of the parallel intervals of all outgoing lines and disconnecting links, and determining a loop distance based on the bus section distances; and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report. And calculating three-phase current flowing through a bus tie theory based on a data report obtained by the transformer substation monitoring system and basic data related to double buses in a database, and further assisting in judging whether the hidden danger of poor contact exists between loops formed by parallel intervals and bus ties.
To facilitate understanding of the beneficial effects of the present invention by those skilled in the art, the following method for determining the GIS double-bus parallel current step according to the present invention is exemplified by the 6-line double-bus diagram illustrated in fig. 3.
Referring to fig. 3, fig. 3 is a 6-out-line double-bus line diagram of an example of a method for determining a GIS double-bus parallel current step according to the present invention, wherein a current I1、I2、I3、IML、I4、I5And I6Respectively corresponding to an outgoing line 1, an outgoing line 2, an outgoing line 3, a bus coupler, an outgoing line 4, an outgoing line 5 and an outgoing line 6,each outgoing line has a corresponding three-phase current value, taking outgoing line 1 as an example, which includes I1、I1M1And I2M1And I is1、I1M1And I2M1Are all the key points of the calculation of the invention.
For convenience of calculation, the data described in this example will be described using a table as a carrier, where the table is as follows:
in this example, line 2 active, line 4-6 three phase current, and line 8-9 disconnecting link remote signaling are obtained from the substation automation monitoring system report generation tool. Where row 2 indicates the power of each outgoing line (buscouple), which may be defined as the incoming bus being positive and the outgoing bus being negative. The 1-knife distance, the 2-knife distance and the interval distance in the 15 th to 17 th rows respectively refer to the distance from the bus knife switch junction point to the 1 st bus knife switch at the interval 1, the distance from the bus knife switch junction point to the 2 st bus knife switch at the interval 2 and the distance from the interval to the bus in the bus connection direction and the adjacent interval bus. These data can be obtained from GIS data or GIS floor plan and profile queries.
The analysis in this example was performed according to the following steps:
(1) setting an active positive and negative judgment cell (line 11), wherein the positive direction value is 1, and the negative direction value is-1;
(2) setting a 1M bus disconnecting link value and a 2M bus disconnecting link value (corresponding to the 12 th row and the 13 th row of the table), and respectively taking 1 or 0 for the disconnecting link according to the switching-on and switching-off positions;
(3) judging whether each interval is between the parallel interval and the bus coupling from the two sides of the bus to the bus coupling, if so, defining the interval as a value 1, namely, the interval comprises the parallel interval; if not, it is defined as a value of 0, i.e., it does not include a parallel interval, and is stored in the 19 th line. When the buses are in parallel (sum is 1) on the left side or the right side of the bus coupler, the buses are in a parallel state. In the specific implementation, the calculation formula of the outgoing lines 1 to 3 on the left side of the bus coupler in the Excel table is specifically as follows: b19 ═ B12 × B13, C19 ═ C12 × C13+ B19, and D19 ═ D12 × D13+ C19; the calculation formula of the bus-tie right outgoing line 4-outgoing line 6 in the Excel table is specifically as follows: f19 ═ F12 ═ F13+ G19, G19 ═ G12 ═ G13+ H19, and H19 ═ H12 ═ H13. In addition, whether parallel disconnecting links exist needs to be judged, and if yes, the value is defined as 1; if not, defining the value as 0; and storing the data to the corresponding column of the bus tie interval, wherein a calculation formula in an Excel table is specifically as follows: e19 ═ D19+ F19.
(4) And calculating the distances from the bus disconnecting link junction point to 1 bus and 2 buses at parallel intervals, and storing the E columns and 20-21 rows at the positions of the bus-coupled intervals. If the distances from the bus disconnecting link junction point to 1 bus and 2 buses are equal, the distances from the bus disconnecting link junction point to 1 bus and 2 buses are directly filled into the rows of 20-21 at the corresponding positions of the bus-coupled interval without calculation.
Specifically, the distances from the bus disconnecting link junction point to 1 bus and 2 buses of the parallel interval are firstly calculated, the non-parallel interval is zero, taking the outgoing line 1 as an example, and the calculation formulas of B20 and B21 in an Excel table are respectively as follows: b20 ═ B19 ═ B15, B21 ═ B19 ═ B16. Then, the distance from the bus disconnecting link junction point to 1 bus and 2 buses of the parallel interval is calculated and stored to the position of the bus connection interval, and the calculation formula in the Excel table is specifically as follows: e20 ═ SUM (B20: D20, F20: H20), E21 ═ SUM (B21: D21, F21: H21).
5. Calculating the bus section distance of the disconnecting link at the parallel interval from two sides to the bus direction, calculating the distance between the parallel interval and the whole loop distance of the bus coupler, and storing the distance until the line 23, wherein the calculation formulas from the outgoing line 1 to the outgoing line 6 in the Excel table are respectively as follows: b23 ═ B19 × B17, C23 ═ C19 × C17+ B23, D23 ═ D19 × D17+ C23, F23 ═ F19 × F17+ G23, G23 ═ G19 × G17+ H23, and H23 ═ H13 × H14. The calculation formula of the whole loop distance in the Excel table is specifically as follows: e23 ═ 2+ E20+ E21+ E17 (D23+ F23).
6. The outgoing line load is equivalent to a current source, the current flowing through the bus-coupled branch at each interval (the parallel interval is zero) is calculated, and then the current of each branch, namely the total current calculated by flowing through the bus-coupled branch, is summarized through the superposition reason and is stored to the 25 th to the 27 th rows. Taking the phase a current as an example, the formula of the current flowing through the bus-coupled branch from the outgoing line 1 to the outgoing line 6 is specifically shown in the Excel table:
B25＝IF(E19＝0,B11*B13*B4,IF(B19＝1,0,IF(B13＝1,1,-1)*(E20*B12+E21*B13+F23)/(E23)*B4*B11))，
C25＝IF(E19＝0,C11*C13*C4,IF(C19+B19＝1,0,IF(C13＝1,1,-1)*(E20*C12+E21*C13+B23+F23)/(E23)*C4*C11))，
D25＝IF(E19＝0,D11*D13*D4,IF(D19+C19＝1,0,IF(D13＝1,1,-1)*(E20*D12+E21*D13+C23+F23)/(E23)*D4*D11))，
F25＝IF(E19＝0,F11*F13*F4,IF(F19+G19＝1,0,IF(F13＝1,1,-1)*(E20*F12+E21*F13+G23+F23)/(E23)*F4*F11))，
G25＝IF(E19＝0,G11*G13*G4,IF(G19+H19＝1,0,IF(G13＝1,1,-1)*(E20*G12+E21*G13+H23+F23)/(E23)*G4*G11))，
H25＝IF(E19＝0,H11*H13*H4,IF(H19＝1,0,IF(H13＝1,1,-1)*(E20*H12+E21*H13+D23)/(E23)*H4*H11))。
the calculation formula of the total current calculated by the bus-tie in the Excel table is specifically as follows: e25 ═ SUM (B25: D25, F25: H25).
7. Calculating the difference value and the difference percentage of the calculated value and the measured value of the bus-tie current, and respectively storing the difference value and the difference percentage into 29-31 rows and 33-35 rows of an E column, taking the phase A as an example, the calculation formula in the Excel table is specifically as follows: E29-E25-E4, and E33-IF (E25-0, 0, ROUND (E29/E25 100, 1)).
By introducing the data cells into the report forms, the three-phase current flowing through the bus tie theory is calculated based on the data report obtained by the transformer substation monitoring system and the basic data related to the double buses in the database, and then whether the hidden danger of poor contact exists between the loops formed by the parallel intervals and the bus tie can be conveniently and auxiliarily judged at low cost.
Referring to fig. 4, a block diagram of an embodiment of a device for determining a parallel current step of a GIS dual bus is shown, which includes the following modules:
the acquisition module 401 is used for acquiring a data report of a target double bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database;
a parallel interval determining module 402, configured to determine whether the outgoing line has a parallel interval based on a disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
a first distance determining module 403, configured to calculate, when there is a parallel interval, a distance from the bus disconnecting link junction to a 1M bus and a distance from the bus disconnecting link junction to a 2M bus of the parallel interval;
a second distance determining module 404, configured to determine bus segment distances between all the outgoing lines and the disconnecting link at parallel intervals according to the distance between the bus disconnecting link junction and the 1M bus at the parallel intervals, the distance between the bus disconnecting link junction and the 2M bus at the parallel intervals, and the numerical value, and determine a loop distance based on the bus segment distances;
and the current calculating module 405 is used for calculating the outgoing branch current and the outgoing total current respectively based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report by combining a calculation formula of the bus-coupled branch current.
In an optional embodiment, the apparatus further comprises:
the direction defining module is used for defining the positive and negative directions of the active data of each outgoing line in the data report; defining an active numerical value 1 corresponding to active data in the positive direction; the active value-1 corresponding to the active data in the negative direction;
the current calculation module 405 is specifically configured to:
and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the three-phase current in the data report and the active numerical value in the remote signaling of the disconnecting link.
In an optional embodiment, the switch remote signaling comprises 1M switch remote signaling and 2M switch remote signaling; the parallel interval determination module 402 includes:
the bus disconnecting link value determining submodule is used for determining a bus disconnecting link value according to the disconnecting link remote signaling; the bus disconnecting link value comprises: 1M bus disconnecting link value and 2M bus disconnecting link value;
and the parallel interval determination submodule is used for calculating the 1M bus disconnecting link value and the 2M bus disconnecting link value and determining whether parallel intervals exist in each outgoing line.
In an optional embodiment, the apparatus further comprises:
and the judging submodule is used for respectively judging the percentage of the phase difference between the branch current and the total current of the outgoing line and the corresponding measured value.
The embodiment of the invention further provides electronic equipment, which comprises a memory and a processor, wherein an analyzer program is stored in the memory, and when the analyzer program is executed by the processor, the processor executes the steps of the method for determining the step by step of the GIS double-bus parallel current according to any one of the embodiments.
The embodiment of the invention also provides a readable storage medium of the analyzer, wherein an analyzer program is stored on the readable storage medium, and when the analyzer program is executed by the processor, the method for determining the step of the GIS double-bus parallel current is realized according to any one of the embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the method, apparatus, electronic device and storage medium disclosed in the present application may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium readable by an analyzer. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a readable storage medium and includes several instructions for enabling an analyzer (which may be a personal analyzer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned readable storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A GIS double-bus parallel current step-by-step determination method is characterized by comprising the following steps:
acquiring a data report of a target double bus from a transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database; the knife distance is the distance from the bus knife switch junction point to the 1M bus at intervals of one bus knife switch; the distance between the two knife electrodes is the distance between the two bus knife switches and the 2M bus from the bus knife switch junction point; the inter-interval distance is the distance between the bus and the adjacent bus in the bus-coupling direction;
determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
under the condition that parallel intervals exist, calculating the distance from the bus disconnecting link junction point to a 1M bus and the distance from the bus disconnecting link junction point to a 2M bus of the parallel intervals;
according to the distance from the bus disconnecting link junction point to the 1M bus at the parallel interval, the distance from the bus disconnecting link junction point to the 2M bus at the parallel interval and the numerical value, determining bus section distances of the parallel intervals of all outgoing lines and disconnecting links, and determining a loop distance based on the bus section distances;
respectively calculating branch current and total current of the outgoing line based on the bus section distance, the loop distance, the disconnecting link remote signaling and three-phase current and active data in the data report by combining a calculation formula of bus-coupled branch current; and the calculation formula of the current of the bus-coupled branch circuit comprises the first-knife distance, the second-knife distance and the distance between the intervals.
2. The method for determining the step by step of the GIS double-bus parallel current according to claim 1, wherein before calculating the branch current and the total current of the outgoing line respectively based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report by combining a calculation formula of the bus-coupled branch current, the method further comprises the following steps:
defining the positive and negative directions of the active data of each outgoing line in the data report; defining an active numerical value 1 corresponding to active data in the positive direction; the active value-1 corresponding to the active data in the negative direction;
the method comprises the following steps of respectively calculating branch current and total current of the outgoing line based on the bus section distance, the loop distance, the disconnecting link remote signaling and three-phase current and active data in the data report by combining a calculation formula of bus-coupled branch current, and specifically comprises the following steps:
and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the disconnecting link remote signaling, the three-phase current in the data report and the active numerical value.
3. The method for determining the GIS double-bus parallel current step according to claim 1, wherein the disconnecting link remote signaling comprises 1M disconnecting link remote signaling and 2M disconnecting link remote signaling; determining whether the outgoing lines have parallel intervals or not based on disconnecting link remote signaling in the data report, comprising:
respectively determining a bus disconnecting link value according to the disconnecting link remote signaling; the bus disconnecting link value comprises: 1M bus disconnecting link value and 2M bus disconnecting link value;
and calculating the 1M bus disconnecting link value and the 2M bus disconnecting link value to determine whether the outgoing lines have parallel intervals.
4. The method for determining the step by step of the GIS double-bus parallel current according to claim 2, wherein after calculating the branch current and the total current of the outgoing line respectively based on the bus section distance, the loop distance, the disconnecting link remote signaling, the three-phase current and the active numerical value in the data report by combining a calculation formula of the bus-coupled branch current, the method further comprises the following steps:
and respectively judging the percentage of the phase difference between the branch current and the total current of the outgoing line and the corresponding measured value.
5. A GIS double-bus parallel current step determination device is characterized by comprising:
the acquisition module is used for acquiring a data report of a target double bus from the transformer substation monitoring system; acquiring a knife distance, a knife distance and a spacing distance of each outgoing line of the target double bus from a preset database; the distance between every two adjacent bus bars is the distance from the bus bar disconnecting link junction point to the 1M bus bar by a bus disconnecting link; the distance between the two knife is the distance between the junction point of the two bus knife switches and the 2M bus; the inter-interval distance is the distance between the bus and the adjacent bus in the bus-coupling direction;
the parallel interval determining module is used for determining whether the outgoing line has parallel intervals or not based on disconnecting link remote signaling in the data report; wherein, the absence of the parallel interval is defined as a value of 0, and the presence of the parallel interval is defined as a value of 1;
the first distance determining module is used for calculating the distance from the bus disconnecting link junction point to the 1M bus and the distance from the bus disconnecting link junction point to the 2M bus in the parallel interval under the condition that the parallel interval exists;
the second distance determining module is used for determining bus section distances of all outgoing lines and disconnecting links at parallel intervals according to the bus section distance between the bus disconnecting link junction point and the 1M bus, the bus disconnecting link junction point and the 2M bus and the numerical value of the parallel intervals, and determining the loop distance based on the bus section distances;
the current calculation module is used for calculating the branch current and the total current of the outgoing line respectively based on the bus section distance, the loop distance, the disconnecting link remote signaling and the three-phase current and active data in the data report by combining a calculation formula of the bus-coupled branch current; the calculation formula of the bus-coupled branch current comprises the first-blade distance, the second-blade distance and the distance between the intervals; and the calculation formula of the current of the bus-coupled branch circuit comprises the first-knife distance, the second-knife distance and the distance between the intervals.
6. The apparatus for determining GIS double bus parallel current split steps according to claim 5, further comprising:
the direction defining module is used for defining the positive and negative directions of the active data of each outgoing line in the data report; defining an active numerical value 1 corresponding to active data in the positive direction; the active value-1 corresponding to the active data in the negative direction;
the current calculation module is specifically configured to:
and respectively calculating the branch current and the total current of the outgoing line by combining a calculation formula of the bus-coupled branch current based on the bus section distance, the loop distance, the disconnecting link remote signaling, the three-phase current in the data report and the active numerical value.
7. The GIS double-bus parallel current step determination device according to claim 5, wherein the disconnecting link remote signaling comprises 1M disconnecting link remote signaling and 2M disconnecting link remote signaling; the parallel interval determination module includes:
the bus disconnecting link value determining submodule is used for determining a bus disconnecting link value according to the disconnecting link remote signaling; the bus disconnecting link value comprises: 1M bus disconnecting link value and 2M bus disconnecting link value;
and the parallel interval determination submodule is used for calculating the 1M bus disconnecting link value and the 2M bus disconnecting link value and determining whether parallel intervals exist in each outgoing line.
8. The apparatus for determining GIS double bus parallel current split steps according to claim 5, further comprising:
and the judging submodule is used for respectively judging the percentage of the phase difference between the branch current and the total current of the outgoing line and the corresponding measured value.
9. An electronic device comprising a processor and a memory, the memory storing analysis machine readable instructions that, when executed by the processor, perform the method of any of claims 1-4.
10. An analysis machine readable storage medium, on which an analysis machine program is stored, which when executed by a processor performs the method according to any one of claims 1-4.
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