CN113504431A - System for judging configuration and running rationality of arc suppression coil of running transformer substation - Google Patents

System for judging configuration and running rationality of arc suppression coil of running transformer substation Download PDF

Info

Publication number
CN113504431A
CN113504431A CN202110770451.3A CN202110770451A CN113504431A CN 113504431 A CN113504431 A CN 113504431A CN 202110770451 A CN202110770451 A CN 202110770451A CN 113504431 A CN113504431 A CN 113504431A
Authority
CN
China
Prior art keywords
module
arc suppression
suppression coil
test
calculation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110770451.3A
Other languages
Chinese (zh)
Other versions
CN113504431B (en
Inventor
王琼
窦冰杰
车传强
杨波
杨文良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Original Assignee
Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd filed Critical Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority to CN202110770451.3A priority Critical patent/CN113504431B/en
Publication of CN113504431A publication Critical patent/CN113504431A/en
Application granted granted Critical
Publication of CN113504431B publication Critical patent/CN113504431B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Electrical Variables (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention provides a system for judging configuration and running rationality of an arc suppression coil of a running transformer substation, and belongs to the field of electrical engineering. The system comprises an input module, a setting module, a storage module, a capacitance current acquisition module, a calculation module, an algorithm module, a judgment decision module and an output module. The capacitance current acquisition module comprises a test position judgment module, a tester, a calculation unit and a test collection unit; the judgment decision module comprises a result judgment module, an algorithm matching module and an adaptive capacity calculation starting module. The system judges the configuration and running rationality of the arc suppression coils under the current running working condition, checks the self-adaptability of the arc suppression coils, and calculates the combination mode of a plurality of arc suppression coils running in parallel and the setting condition of each arc suppression coil. The system can evaluate the rationality of each arc suppression coil, can improve the efficiency of accounting work of the arc suppression coils of the transformer substation with large quantity and different configuration conditions, and guides the reconstruction project.

Description

System for judging configuration and running rationality of arc suppression coil of running transformer substation
Technical Field
The invention belongs to the field of electrical engineering, and particularly relates to a system for judging configuration and running rationality of an arc suppression coil of a running transformer substation.
Background
For a system of a power distribution network grounded through an arc suppression coil, the rapid development of an urban power distribution network enables the capacitance current value of the power distribution system to rapidly increase, and the operation risk caused by insufficient compensation capacity of the arc suppression coil is increasingly aggravated. Under the current situation that a large number of power cables are laid in a common channel, the arc suppression coil grounding system has the characteristics of fault operation and poor grounding line selection accuracy, so that accidents of cable channel fire continuous operation are frequent when single-phase grounding faults occur, the safety threat degree of personal equipment is increased rapidly, and the requirement for rapid disposal of the single-phase grounding faults is very urgent.
The grounding mode is a systematic project of a power supply area, and for most operating substations with insufficient compensation capacity of arc suppression coils, the capacity expansion transformation of the arc suppression coils is still the preferred scheme. However, whether the configuration and the operation of the arc suppression coil of the transformer substation are reasonable or not is closely related to the number of bus sections, the operation mode of the bus, the installation position of the arc suppression coil, the operation mode of the arc suppression coil, the adjustment principle of the arc suppression coil, the capacitance current value of the transformer substation in different operation modes and other factors, the problems of the uncomplicated arc suppression coil system are serious due to the influence of the factors, and the requirements of the determination method for the configuration and the operation rationality of the arc suppression coil of the transformer substation are outstanding. Secondly, after the capacity increasing project of the arc suppression coil is completed by a plurality of transformer substations for two or three years, the problem of insufficient capacity of the arc suppression coil in a short period due to improper capacity increasing accounting and blind reconstruction is solved. Thirdly, part of the low-voltage side buses belong to the transformer substation in a parallel operation mode, and the practical problem that whether the arc suppression coils installed during the bus split operation can meet the low-voltage bus split operation is not concerned; if the arc suppression coil can meet the compensation requirement of bus split operation, the arc suppression coil can strive for time cost for capacity-increasing transformation engineering.
Along with the increase of capacitance current, the problem that arc suppression coil cooperation and operation are unreasonable is embarrassed increasingly, because arc suppression coil configuration is improper or can't operate, the life equipment safety threat that leads to single-phase earth fault still is on one side often, and transformation and treatment work have been reluctant. Therefore, it is necessary to develop a system for determining the configuration and operation rationality of the arc suppression coil of the operating substation to solve the above problems.
Disclosure of Invention
The invention provides a system for judging the configuration and the operating rationality of arc suppression coils of operating substations, which aims to accurately evaluate the operating rationality and the configuration rationality of the arc suppression coils of each substation, and finally improves the working efficiency of the accounting work of the arc suppression coils of the substations with large quantity and different configuration conditions by means of a system supported by an auxiliary method.
In order to realize the purpose of the invention, the invention adopts the following technical scheme: a judgment system for operating configuration and operating rationality of an arc suppression coil of a transformer substation comprises an input module, a setting module, a storage module, a capacitance current acquisition module, a calculation module, an algorithm module, a judgment decision module and an output module;
the capacitance current acquisition module comprises a test position judgment unit, a capacitance current tester, a capacitance current calculation unit and a test set output unit;
the judgment decision module comprises a result judgment module, an algorithm matching module and an adaptive capacity calculation starting module;
the information input module is respectively connected with the centralized control platform, the setting module and the storage module of the transformer substation in a one-way mode, receives basic information transmitted by the centralized control platform and respectively transmits the basic information to the setting module and the storage module;
the information setting module is respectively connected with the input module and the regulation and control platform, the storage module and the test position judging unit of the power supply station in a one-way mode, receives basic information transmitted by the input module and a preset operation mode transmitted by the regulation and control platform, respectively sets information under the current operation condition and the preset operation mode according to a preset strategy, and respectively transmits the information to the storage module and the test position judging unit;
the testing position judging module, the capacitance current tester and the testing set output unit are sequentially connected in a unidirectional mode, the capacitance current tester receives capacitance current testing position information transmitted by the testing position judging module, field testing work is carried out, and a capacitance current testing value is obtained; the test set output unit generates a set of capacitance current test position information and test values thereof;
the storage module is unidirectionally connected with the input module, the setting module, the test set output unit and the calculation module, and receives basic information transmitted by the input module, information settings sent by the setting module under the current operating condition and in a preset operating mode, and a set of capacitance current test position information and test values thereof sent by the test set output unit;
the computing module is connected with the storage module in a one-way mode, and information used for computing is extracted from the storage module;
the algorithm module is connected with the calculation module, the result judgment module and the algorithm matching module in a one-way mode in sequence to form a closed-loop system, the algorithm matching module matches the algorithm in the algorithm module required by current calculation according to the judgment result transmitted by the result judgment module, and the algorithm module is used for receiving the matching requirement of the algorithm matching module and transmitting the corresponding algorithm back to the calculation module;
the self-adaptive capacity calculation starting module starts adaptive calculation of the arc suppression coil according to a judgment result transmitted by the result judgment module and transmits a matched preset operation mode to the regulation and control platform;
the output module is connected with the judging module in a one-way mode and used for receiving and outputting all judging results transmitted by the judging module.
Preferably, the basic information input by the input module includes a voltage level of a power distribution system, a sectional bus connection mode, a sectional bus number, an arc suppression coil tuning principle and a gear setting, a rated capacity of the arc suppression coil, an installation position of the arc suppression coil, a sectional bus operation mode and an operation condition of the arc suppression coil.
Preferably, the information setting under the current operation condition and the preset operation mode includes the low-voltage side bus segment number, the arc suppression coil installation information and the information of the operation condition of the arc suppression coil.
Preferably, the capacitance current calculation unit is unidirectionally connected with the test position determination module and the test set output unit, receives the test position of each capacitance current in the preset operation mode transmitted by the test position determination module, calls calculation software according to a preset configuration strategy, and calculates a capacitance current test value of each test position by the software and transmits the capacitance current test value to the test set output unit.
Preferably, the algorithm module comprises a transformer substation arc suppression coil rationality algorithm, a parallel operation arc suppression coil matching mode algorithm and an arc suppression coil capacity accounting algorithm.
Preferably, the judging step of the configuration and operation rationality of the arc suppression coil comprises the following steps:
step 1, acquiring basic information and setting the information;
step 2, judging the connection condition of an arc suppression coil under the current operation condition of the transformer substation;
step 3, testing the capacitance current value of the test point under the current operation condition;
step 4, judging whether the configuration of the arc suppression coil meets the compensation requirement under the current operation working condition;
step 5, judging the running reasonability of the arc suppression coil under the current running working condition;
step 6, changing the operation mode and checking the self-adaptive capacity of the arc suppression coil;
and 7, calculating the newly added capacity of the arc suppression coils and calculating the matching mode of the parallel operation arc suppression coils.
Compared with the prior art, the invention has the beneficial effects that:
1. the arc suppression coil system has connected the transformer substation centralized control platform, distribution system voltage level has been typed in, the section bus connection mode, the serial number of section bus, the arc suppression coil serial number, arc suppression coil harmonious principle and gear setting, arc suppression coil rated capacity, arc suppression coil mounted position, section bus operation mode, data such as arc suppression coil operational aspect, the configuration of a set of operation transformer substation arc suppression coil and the realization mode of the judgement system of operation rationality have been proposed, the disappearance of the technique in the current engineering application has been complemented. The efficiency of the accounting work of the arc suppression coils of the transformer substation with large quantity and different configuration conditions can be improved.
2. The system is provided with a judging function of the self-adaptive capacity of the arc suppression coil in a preset operation mode and a closed-loop system, and the closed-loop system is connected with a regulation and control platform. For a transformer substation with the arc suppression coil configured or running without meeting the compensation requirement, the adaptive capacity calculation starting module transmits a possible preset running mode to the regulation and control platform, and after verification by regulation and control personnel, the adaptive capacity of the arc suppression coil is checked in the preset running mode.
And if the arc suppression coil can meet the compensation requirement of the bus split operation, the arc suppression coil can be reversed to meet the compensation requirement by adjusting the operation mode. When the arc suppression coil is required to be replaced in long-range planning, if the arc suppression coil can meet the compensation requirement of bus split operation, time cost is strived for subsequent capacity increasing transformation engineering.
3. The system comprises a capacitance current acquisition module, a low-voltage side bus, a capacitance current tester, a capacitance current calculation unit, a capacitance current test collection unit and the like, wherein the capacitance current acquisition module comprises a test position judgment module, a capacitance current tester, a capacitance current calculation unit and a capacitance current test collection unit, and the system provides a capacitance current test position for testers according to the operation mode of the low-voltage side bus and avoids calculation and judgment errors caused by improper test positions.
Meanwhile, the system defaults to preferentially select the capacitance current tester to test the capacitance current value on the spot, and the capacitance current value on the spot is more accurate than the capacitance current value obtained by unit calculation in principle. If the current system operation mode cannot be adjusted, that is, the current system operation mode cannot be matched with the test, the capacitance current calculation unit can be used for acquiring the capacitance current value.
4. The system respectively provides a corresponding transformer substation arc suppression coil rationality algorithm, a parallel operation arc suppression coil matching mode algorithm and an algorithm of an arc suppression coil capacity calculation algorithm according to calculation and judgment logics of judging the reasonability of the configuration and the reasonability of the operation of the arc suppression coil under the current operation working condition and then checking the adaptivity of the arc suppression coil. The system particularly focuses on the combination mode of a plurality of arc suppression coils which are operated in parallel and the arrangement condition of each arc suppression coil, and the selection of the capacity of the arc suppression coil can meet the compensation requirements of the arc suppression coils in different bus operation modes. The calculation and judgment result of the system is more practical, and the capacity increasing and transformation project of the arc suppression coil can be more effectively guided.
Drawings
FIG. 1 is a diagram of a judging system according to the present invention.
FIG. 2 is a flowchart of the determining steps corresponding to the determining system of the present invention.
Detailed Description
Fig. 1 is a structural diagram of a judgment system of the invention, and as can be seen from fig. 1, the judgment system for operating the configuration and the operation rationality of the arc suppression coil of the transformer substation of the invention comprises an input module 1, a setting module 2, a storage module 3, a capacitance current acquisition module 4, a calculation module 5, an algorithm module 6, a judgment decision module 7 and an output module 8.
The capacitance current acquisition module 4 includes a test position determination unit 41, a capacitance current tester 42, a capacitance current calculation unit 44, and a test set output unit 43.
The judgment decision module 7 comprises a result judgment module 71, an algorithm matching module 72 and an adaptive capacity calculation starting module 73.
The information input module 1 is respectively connected with the centralized control platform 9, the setting module 2 and the storage module 3 of the transformer substation in a one-way mode, and the information input module 1 receives basic information transmitted by the centralized control platform 9 and respectively transmits the basic information to the setting module 2 and the storage module 3.
The information setting module 2 is respectively connected with the input module 1 and the regulation and control platform 10 of the power supply station, the storage module 3 and the test position judgment unit 41 in a one-way mode, the information setting module 2 receives basic information transmitted by the input module 1 and a preset operation mode transmitted by the regulation and control platform 10, respectively sets information under the current operation condition and the preset operation mode according to a preset strategy, and respectively transmits the information to the storage module 3 and the test position judgment unit 41.
The test position judging module 41, the capacitance current tester 42 and the test set output unit 43 are sequentially connected in a unidirectional manner, and the capacitance current tester 42 receives the capacitance current test position information transmitted by the test position judging module 41, carries out field test work and acquires a capacitance current test value; the test set output unit 43 generates a set of capacitance current test position information and its test value.
The storage module 3 is unidirectionally connected with the input module 1, the setting module 2, the test set output unit 43 and the calculation module 5, and the storage module 3 receives basic information transmitted by the input module 1, information settings sent by the setting module 2 under the current operating condition and in the preset operating mode, and a set of capacitance current test position information and test values thereof sent by the test set output unit 43.
The calculation module 5 is connected with the storage module 3 in a one-way mode, and information used for calculation is extracted from the storage module 3.
The algorithm module 6 is connected with the calculation module 5, the result judgment module 71 and the algorithm matching module 72 in a one-way mode in sequence to form a closed-loop system, the algorithm matching module 72 matches the algorithm in the algorithm module 6 required by the current calculation according to the judgment result transmitted by the result judgment module 71, and the algorithm module 6 is used for receiving the matching requirement of the algorithm matching module 72 and transmitting the corresponding algorithm back to the calculation module 5.
The result judgment module 71 is connected with the adaptive capacity calculation starting module 73, the regulation and control platform 10, the setting module 2, the storage module 3 and the calculation module 5 in sequence in a one-way mode to form a closed-loop system, and the adaptive capacity calculation starting module 73 starts adaptive calculation of the arc suppression coil according to the judgment result transmitted by the result judgment module 71 and transmits the matched preset operation mode to the regulation and control platform 10.
The output module 8 is connected with the judgment module 7 in a one-way manner, and is used for receiving and outputting all judgment results transmitted by the judgment module 7.
In this embodiment, the basic information input by the input module 1 includes a power distribution system voltage level, a sectional bus connection mode, a sectional bus number, an arc suppression coil tuning principle and a shift setting, an arc suppression coil rated capacity, an arc suppression coil installation position, a sectional bus operation mode, and an arc suppression coil operation condition.
In this embodiment, the information settings under the current operating condition and the preset operating mode include the low-voltage side bus segment number, the arc suppression coil installation information, and the information of the operating condition of the arc suppression coil.
In this embodiment, the capacitance current calculating unit 44 is unidirectionally connected to the test position determining module 41 and the test set output unit 43, the capacitance current calculating unit 44 receives the test position of each capacitance current in the preset operation mode transmitted by the test position determining module 41, calls the calculating software according to the preset configuration policy, and calculates the capacitance current test value of each test position by the software and transmits the capacitance current test value to the test set output unit 43.
In this embodiment, the algorithm module 6 includes a transformer substation arc suppression coil rationality algorithm, a parallel operation arc suppression coil matching mode algorithm, and an arc suppression coil capacity accounting algorithm.
FIG. 2 is a flowchart of the determining steps corresponding to the determining system of the present invention. As can be seen from fig. 2, in this embodiment, the steps for determining the reasonableness of the configuration and operation of the arc suppression coil are as follows:
step 1, acquiring basic information and setting the information;
step 2, judging the connection condition of an arc suppression coil under the current operation condition of the transformer substation;
step 3, testing the capacitance current value of the test point under the current operation condition;
step 4, judging whether the configuration of the arc suppression coil meets the compensation requirement under the current operation working condition;
step 5, judging the running reasonability of the arc suppression coil under the current running working condition;
step 6, changing the operation mode and checking the self-adaptive capacity of the arc suppression coil;
and 7, calculating the newly added capacity of the arc suppression coils and calculating the matching mode of the parallel operation arc suppression coils.
Specifically, the above 7 steps include the following:
step 1, acquiring basic information and setting information
Step 1.1, basic information acquisition
The acquired basic information includes: distribution network voltage class UeThe method comprises the following steps of, a sectional bus wiring mode, the number of a sectional bus, the number of an arc suppression coil, an arc suppression coil adjusting principle, the rated capacity of the arc suppression coil, the installation position of the arc suppression coil, a sectional bus operation mode and the operation condition of the arc suppression coil;
step 1.2, information setting
(1) Setting the segmented number of the low-voltage side buses of the transformer substation as J segments, and recording any one segment of segmented buses in the J segments as a segmented bus FnN is the serial number of the segmented bus, n is 1, J is less than or equal to 4;
(2) if K arc suppression coils are configured on a low-voltage side bus of the transformer substation, K is less than or equal to J, any one of the K arc suppression coils is marked as an arc suppression coil XkWherein K is the serial number of the arc suppression coil, and K is 1. Arc suppression coil XkRated capacity of (D) is denoted as QkArc suppression coil X under rated capacitykThe maximum inductive current output is recorded as the rated inductive current IL max-k，
Figure BDA0003152186140000071
(3) Such as arc suppression coil XkMounted on a sectional bus FnThe segmented bus bar FnIs recorded as installation information Z (n, k, I)L max-k) (ii) a In particular, when the segmented bus bar FnWhen the arc suppression coil is not installed, the installation information is recorded as Z (n, 0, 0);
(4) the section bus FnThe operation mode of the bus-bar connector comprises parallel operation or split operation, and the split bus-bar connector FnThe operation mode is recorded as a sectional bus operation mode NnSegmented bus operating mode NnIs determined in the following manner:
segmented bus F1Segmented bus operation mode N1＝1；
When section bus FnFor split operation, Nn＝1；
When section bus FnAnd a sectional bus Fn+1In parallel operation, Nn＝1，Nn+1＝0；
When section bus FnSegmented bus Fn+1Segmented bus Fn+2In parallel operation, Nn＝1，Nn+1＝0，Nn+2＝0；
Operation mode N for J-section segmented buses on low-voltage side busesnIs recorded as a running mode set N*，N*＝{N1，...，Nn，...，NJ}；
(5) The arc suppression coil XkOperation of (2) with arc suppression coil operation YkIndicating, arc suppression coil operation YkThe value of (d) is determined in the following manner:
if arc suppression coil XkNot put into operation, Yk＝0；
If arc suppression coil XkPut into operation, Yk＝1；
Step 2, judging the connection condition of the arc suppression coil under the current operation working condition of the transformer substation
Installing the current operating condition on a segmented bus FnUpper arc suppression coil XkThe maximum inductive current output is recorded as the maximum inductive current
Figure BDA0003152186140000081
For each section of the J section of the sectional bus-bars FnIn turn from the installation information Z (n, k, I)L max-k) Is prepared fromNumber k of arc coil and rated inductive current IL max-kAnd is combined withL max-kIs assigned to
Figure BDA0003152186140000082
Obtaining n maximum inductive currents
Figure BDA0003152186140000083
Segmenting a bus F under the current operating conditionnIs recorded as the current electrical position information
Figure BDA0003152186140000084
Current electrical position information of J-segment segmented bus
Figure BDA0003152186140000085
Is denoted as connection set LZ*，
Figure BDA0003152186140000086
Step 3, testing the capacitance current value of the test point under the current operation condition
Step 3.1, D test points are arranged on a low-voltage side bus of the transformer substation in total, and any one test point is marked as a test point Ci1, D, wherein D ≦ J;
recording segmented bus F under current operation conditionnThe test position information is C (n, i), wherein i represents the test point number, and the test position information C (n, i) represents that the ith test point in the capacitance current test work under the current operation condition is at the segmented bus FnHere, the test position information C (n, i) is determined in the following manner:
firstly, a sectional bus F is set1Is located at the 1 st capacitor current test point and then is connected with the segmented bus F2To the sectional bus FJSequentially judging the operation mode N of the segmented busnThe numerical value of (A):
if N is presentnWhen the value is 0, it is denoted as C (n, 0), and it represents the segment bus FnThe parallel operation is realized, and the capacitance current test is not needed;
if N is presentnGiving a test point number i and recording test position information C (n, i) of the capacitance current under the current operation working condition as 1;
step 3.2, according to the testing position information C (n, i) obtained in the step 3.1, utilizing the capacitance current tester to test each section bus F in each testing position information C (n, i)nCarrying out capacitance current test to obtain each segmented bus FnCurrent value of capacitor
Figure BDA0003152186140000087
Defining a segmented bus FnIs recorded as
Figure BDA0003152186140000088
And recording the test information set of the J-segment segmented bus as a test set CS*，
Figure BDA0003152186140000089
Step 4, judging whether the configuration of the arc suppression coil under the current operation working condition meets the compensation requirement
Step 4.1, recording the grounding residual current of the arc suppression coil as the grounding residual current
Figure BDA0003152186140000091
The detuning degree of the arc suppression coil is recorded as detuning degree upsilonnThe calculation formulas are respectively as follows:
if the sectional bus F of the arc suppression coil is connectednAnd (3) operating in a row, namely:
Figure BDA0003152186140000092
Figure BDA0003152186140000093
if the sectional bus F of the arc suppression coil is connectednParallel operation, then:
Figure BDA0003152186140000094
Figure BDA0003152186140000095
wherein,
Figure BDA0003152186140000096
is the sum of the maximum inductive currents
Figure BDA0003152186140000097
Comprises the following steps: each section of sectional bus FnWhen running in parallel, all the sectional buses F running together in parallelnThe maximum inductive current value output by all the arc suppression coils connected with the coil
Figure BDA0003152186140000098
The sum of (1);
step 4.2, each section of the segmented bus F of the low-voltage side bus of the transformer substationnFrom the connection set LZ*And set of operating modes N*The serial number k and the maximum inductive current of the arc suppression coil are obtained
Figure BDA0003152186140000099
Segmented bus operating mode NnAnd through a segmented bus operating mode NnDetermines the sum of the maximum inductive currents in step 4.1
Figure BDA00031521861400000910
Step 4.3, under the current operation working condition, segmenting the bus FnFor the judgment unit, calculating the sectional buses one by one to obtain the grounding residual current
Figure BDA00031521861400000911
And a degree of detuning υn；
From test set
Figure BDA00031521861400000912
Obtain the section bus F corresponding to D test pointsnAccording to the formula given in step 4.1, D grounding residual currents are calculated
Figure BDA00031521861400000913
And a degree of detuning υnA value;
step 4.4, judging whether the configuration of the arc suppression coil meets the compensation requirement under the current operation working condition;
if unIf the current operation condition is less than 5 percent, determining that the compensation capacity is insufficient, and executing a step 6;
if unNot less than 10%, determining that the arc suppression coil meets the compensation requirement under the current operation condition, and executing the step 5;
if 5% is less than or equal to upsilonnIf the current operating condition is less than 10%, the arc suppression coil is determined to basically meet the compensation requirement, the change condition of the capacitance and the current is closely concerned, and the step 5 is executed;
step 5, judging the operating reasonability of the arc-extinguishing coil under the current operating condition
For each arc suppression coil X in K arc suppression coilskDetermining the rationality of the operation of the arc suppression coil, in particular from installation information Z (n, k, I)L max-k) Obtaining rated inductive current IL max-kAnd judging operation Y of the arc suppression coilkThe state of (1);
if Y isk1 with the arc suppression coil XkCorresponding to
Figure BDA0003152186140000101
If Y isk0, the arc suppression coil XkThe operation is not carried out, and the device is not put into operation,
Figure BDA0003152186140000102
substituting the data into the formula in the step 4.1 again for calculation to obtain the connection between the arc suppression coil and the sectional bus F after considering the operation mode of the arc suppression coilnArc extinction onCoil XkAnd is noted as a second degree of detuning upsilon'n：
V 'if'nLess than 5%, it is determined that X is due to arc suppression coilkQuitting the operation, failing to meet the operation requirement, and checking the arc suppression coil XkExiting the reason and executing step 6;
v 'if'nNot less than 5%, and the arc suppression coil X is determined to meet the operation requirementkThe operation can be quitted, so that the difficulty in matching the tuning of a plurality of arc suppression coils is avoided;
step 6: changing the operation mode and checking the self-adaptive capacity of the arc suppression coil
Defining sectional busbars F of a substationnThe new preset operation modes formed after the operation modes are adjusted are M in total, and the number of any new preset operation mode is recorded as M, wherein M is 1
Figure BDA0003152186140000103
Obtaining an operation mode set N under the current operation mode*Judging the operation mode set N*The bus running mode N of all the sectional busesnWhether they are all equal to 1:
1) if yes, determining that the compensation capacity is insufficient, and finishing judgment if capacity increasing transformation is needed;
2) otherwise, verify Nn0 segmented bus FnWhether or not it can be adjusted to Nn1, i.e. the sectional busbar FnWhether the split operation can be carried out or not;
if the operation can not be performed in a split mode, the compensation capacity is determined to be insufficient, capacity increasing transformation is needed, and the judgment is finished;
if the sectional bus F can be operated in a row, the sectional bus F is adjustednSo that the adjusted operation mode N is adoptedn1, adding NnSubstituting 1 into the original operation mode set N*Obtaining a new operation mode set and recording the new operation mode set as a preset operation mode set
Figure BDA0003152186140000104
By using
Figure BDA0003152186140000105
Substituted N*Returning to the step 2 to the step 4.3 to obtain the preset detuning degree by calculation
Figure BDA0003152186140000111
And judging again:
if it is
Figure BDA0003152186140000112
Under the preset operation condition, the self-adaptive capacity of the arc suppression coil is determined to be insufficient, and capacity increasing transformation is needed;
if it is
Figure BDA0003152186140000113
Under the preset operation condition, the adaptive capacity of the arc suppression coil is determined to meet the requirement, and the compensation requirement can be met after the operation mode is adjusted;
step 7, calculating the newly added capacity of the arc suppression coils and calculating the matching mode of the parallel operation arc suppression coils;
and at this point, the arc suppression coil configuration and the operation rationality of the operation transformer substation are judged to be finished.

Claims (6)

1. A judgment system for operating configuration and operation rationality of an arc suppression coil of a transformer substation is characterized by comprising an input module (1), a setting module (2), a storage module (3), a capacitance current acquisition module (4), a calculation module (5), an algorithm module (6), a judgment decision module (7) and an output module (8);
the capacitance current acquisition module (4) comprises a test position judgment unit (41), a capacitance current tester (42), a capacitance current calculation unit (44) and a test set output unit (43);
the judgment decision module (7) comprises a result judgment module (71), an algorithm matching module (72) and an adaptive capacity calculation starting module (73);
the information input module (1) is respectively connected with a centralized control platform (9), a setting module (2) and a storage module (3) of the transformer substation in a one-way mode, the information input module (1) receives basic information transmitted by the centralized control platform (9) and transmits the basic information to the setting module (2) and the storage module (3) respectively;
the information setting module (2) is respectively connected with the input module (1) and the regulation and control platform (10) of the power supply station, the storage module (3) and the test position judging unit (41) in a one-way mode, the information setting module (2) receives basic information transmitted by the input module (1) and a preset operation mode transmitted by the regulation and control platform (10), respectively sets information under the current operation condition and the preset operation mode according to a preset strategy, and respectively transmits the information to the storage module (3) and the test position judging unit (41);
the test position judging module (41), the capacitance current tester (42) and the test set output unit (43) are sequentially connected in a one-way mode, the capacitance current tester (42) receives capacitance current test position information transmitted by the test position judging module (41), field test work is carried out, and a capacitance current test value is obtained; a test set output unit (43) generates a set of capacitance current test position information and test values thereof;
the storage module (3) is in one-way connection with the input module (1), the setting module (2), the test set output unit (43) and the calculation module (5), and the storage module (3) receives basic information transmitted by the input module (1), information settings sent by the setting module (2) under the current operating condition and the preset operating mode, and a set of capacitance and current test position information and test values thereof sent by the test set output unit (43);
the calculation module (5) is connected with the storage module (3) in a one-way mode, and information used for calculation is extracted from the storage module (3);
the algorithm module (6) is sequentially and unidirectionally connected with the calculation module (5), the result judgment module (71) and the algorithm matching module (72) to form a closed loop system, the algorithm matching module (72) matches the algorithm in the algorithm module (6) required by the current calculation according to the judgment result transmitted by the result judgment module (71), and the algorithm module (6) is used for receiving the matching requirement of the algorithm matching module (72) and transmitting the corresponding algorithm back to the calculation module (5);
the result judgment module (71) is sequentially and unidirectionally connected with the adaptive capacity calculation starting module (73), the regulation and control platform (10), the setting module (2), the storage module (3) and the calculation module (5) to form a closed-loop system, and the adaptive capacity calculation starting module (73) starts adaptive calculation of the arc suppression coil according to a judgment result transmitted by the result judgment module (71) and transmits a matched preset operation mode to the regulation and control platform (10);
and the output module (8) is connected with the judgment module (7) in a one-way manner and is used for receiving and outputting all judgment results transmitted by the judgment module (7).
2. The system for judging the configuration and the running rationality of the arc suppression coil of the running substation according to claim 1, characterized in that the basic information input by the input module (1) comprises the voltage grade of a power distribution system, the wiring mode of a sectional bus, the number of the arc suppression coil, the tuning principle and the gear setting of the arc suppression coil, the rated capacity of the arc suppression coil, the installation position of the arc suppression coil, the running mode of the sectional bus and the running condition of the arc suppression coil.
3. The system for judging the configuration and the operation rationality of the arc suppression coils of the operating substation according to claim 1, wherein the information settings under the current operation condition and the preset operation mode comprise the information of the number of low-voltage side bus segments, the number of the arc suppression coils, the installation information of the arc suppression coils and the operation condition of the arc suppression coils.
4. The system for judging the configuration and the operation rationality of the arc suppression coil of the operating substation according to claim 1, wherein the capacitance current calculation unit (44) is connected with the test position judgment module (41) and the test set output unit (43) in a one-way mode, the capacitance current calculation unit (44) receives the test positions of the capacitance currents in the preset operation mode transmitted by the test position judgment module (41), and calls calculation software according to a preset configuration strategy, and the software calculates the capacitance current test values of the test positions and transmits the capacitance current test values to the test set output unit (43).
5. A system for determining the configuration and operation rationality of an operating substation arc suppression coil according to claim 1, characterized in that the algorithm module (6) comprises a substation arc suppression coil rationality algorithm, a parallel operation arc suppression coil coordination mode algorithm and an arc suppression coil capacity accounting algorithm.
6. The system for judging the configuration and the operation rationality of the arc suppression coil of the operating substation according to claim 1, wherein the step of judging the configuration and the operation rationality of the arc suppression coil comprises the following steps:
step 1, acquiring basic information and setting the information;
step 2, judging the connection condition of an arc suppression coil under the current operation condition of the transformer substation;
step 3, testing the capacitance current value of the test point under the current operation condition;
step 4, judging whether the configuration of the arc suppression coil meets the compensation requirement under the current operation working condition;
step 5, judging the running reasonability of the arc suppression coil under the current running working condition;
step 6, changing the operation mode and checking the self-adaptive capacity of the arc suppression coil;
and 7, calculating the newly added capacity of the arc suppression coils and calculating the matching mode of the parallel operation arc suppression coils.
CN202110770451.3A 2021-07-07 2021-07-07 System for judging configuration and running rationality of arc suppression coil of running transformer substation Active CN113504431B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110770451.3A CN113504431B (en) 2021-07-07 2021-07-07 System for judging configuration and running rationality of arc suppression coil of running transformer substation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110770451.3A CN113504431B (en) 2021-07-07 2021-07-07 System for judging configuration and running rationality of arc suppression coil of running transformer substation

Publications (2)

Publication Number Publication Date
CN113504431A true CN113504431A (en) 2021-10-15
CN113504431B CN113504431B (en) 2022-08-30

Family

ID=78012087

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110770451.3A Active CN113504431B (en) 2021-07-07 2021-07-07 System for judging configuration and running rationality of arc suppression coil of running transformer substation

Country Status (1)

Country Link
CN (1) CN113504431B (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102004191A (en) * 2010-09-29 2011-04-06 思源电气股份有限公司 Method for calculating line capacitance in arc suppression coil parallel running system
CN102385014A (en) * 2011-11-10 2012-03-21 江苏省电力公司射阳县供电公司 Test instrument for arc suppression coil compensation device
CN103199520A (en) * 2013-04-01 2013-07-10 山东电力集团公司电力科学研究院 Parallel operation control method for multiple arc suppression coils of wind power plant
WO2014090816A1 (en) * 2012-12-10 2014-06-19 Alstom Technology Ltd Ground fault direction determination for medium or high voltage distribution networks
CN104237678A (en) * 2014-08-21 2014-12-24 国家电网公司 Arc suppression coil control device verification system
EP2940483A1 (en) * 2014-04-14 2015-11-04 Vysoke Uceni Technicke V Brne Evaluation method for determining of the probability of an asymmetrical fault location in a distribution network and a monitoring system for performing such method
RU166393U1 (en) * 2015-12-31 2016-11-20 Общество с ограниченной ответственностью Внедренческое предприятие "Наука, техника, бизнес в энергетике" DEVICE FOR EXCITING NEUTRAL ELECTRIC NETWORK EARTHED THROUGH AN ARC EXTINGUISHING REACTOR
CN106877306A (en) * 2017-03-08 2017-06-20 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Arc suppression coil of power distribution network distributed compensation device integrated with distribution transformer
CN107706901A (en) * 2017-11-07 2018-02-16 国网安徽省电力公司经济技术研究院 A kind of optimization dispersion compensation method of arc suppression coil of power distribution network
RU2719632C1 (en) * 2018-11-13 2020-04-21 ОАО "Сетевая компания" Device for automatic compensation of capacitance currents with balancing of phase voltages of network
CN111525534A (en) * 2020-05-15 2020-08-11 中国矿业大学 Automatic tracking compensation device for arc suppression coil
CN112688436A (en) * 2021-03-15 2021-04-20 国网四川省电力公司电力科学研究院 Arc suppression coil online sensing system and method based on power distribution internet of things

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102004191A (en) * 2010-09-29 2011-04-06 思源电气股份有限公司 Method for calculating line capacitance in arc suppression coil parallel running system
CN102385014A (en) * 2011-11-10 2012-03-21 江苏省电力公司射阳县供电公司 Test instrument for arc suppression coil compensation device
WO2014090816A1 (en) * 2012-12-10 2014-06-19 Alstom Technology Ltd Ground fault direction determination for medium or high voltage distribution networks
CN103199520A (en) * 2013-04-01 2013-07-10 山东电力集团公司电力科学研究院 Parallel operation control method for multiple arc suppression coils of wind power plant
EP2940483A1 (en) * 2014-04-14 2015-11-04 Vysoke Uceni Technicke V Brne Evaluation method for determining of the probability of an asymmetrical fault location in a distribution network and a monitoring system for performing such method
CN104237678A (en) * 2014-08-21 2014-12-24 国家电网公司 Arc suppression coil control device verification system
RU166393U1 (en) * 2015-12-31 2016-11-20 Общество с ограниченной ответственностью Внедренческое предприятие "Наука, техника, бизнес в энергетике" DEVICE FOR EXCITING NEUTRAL ELECTRIC NETWORK EARTHED THROUGH AN ARC EXTINGUISHING REACTOR
CN106877306A (en) * 2017-03-08 2017-06-20 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Arc suppression coil of power distribution network distributed compensation device integrated with distribution transformer
CN107706901A (en) * 2017-11-07 2018-02-16 国网安徽省电力公司经济技术研究院 A kind of optimization dispersion compensation method of arc suppression coil of power distribution network
RU2719632C1 (en) * 2018-11-13 2020-04-21 ОАО "Сетевая компания" Device for automatic compensation of capacitance currents with balancing of phase voltages of network
CN111525534A (en) * 2020-05-15 2020-08-11 中国矿业大学 Automatic tracking compensation device for arc suppression coil
CN112688436A (en) * 2021-03-15 2021-04-20 国网四川省电力公司电力科学研究院 Arc suppression coil online sensing system and method based on power distribution internet of things

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WEN WANG 等: "Principle and Control Design of Active Ground-Fault Arc Suppression Device for Full Compensation of Ground Current", 《IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS》 *
伊国强 等: "不对称度对消弧线圈系统高阻接地故障选线影响研究", 《电力学报》 *

Also Published As

Publication number Publication date
CN113504431B (en) 2022-08-30

Similar Documents

Publication Publication Date Title
CN105207213B (en) A kind of methods of calibration of power distribution network N 1 for considering segmentation load transfer
CN101291054B (en) Diagnosis and protection method for residue current of ground fault in electrical power system
CN110336306A (en) A kind of system-level and Unit Level control method of intelligence load commutation
CN111049113A (en) 35KV power distribution network constant value self-adaptive setting method based on centralized master station architecture
CN105846422B (en) A kind of large capacity grid short circuit current control stimulation optimization configuration method
CN110417034A (en) A kind of control method suitable for intelligent load commutation
Mather et al. Distribution-connected PV's response to voltage sags at transmission-scale
CN112952775A (en) Method for protecting voltage quantity of power distribution network containing distributed photovoltaic power supply
CN113504431B (en) System for judging configuration and running rationality of arc suppression coil of running transformer substation
CN114971168A (en) Cable line synchronous line loss rate abnormity analysis method based on multi-system interaction
Fila et al. Flexible voltage control to support distributed generation in distribution networks
CN117269666A (en) Active power distribution network fault positioning method based on measurement data
CN109327007B (en) Same-tower multi-circuit zero-sequence compensation coefficient setting device and method based on station domain information
Pinto et al. Investigation of infrastructural solutions to mitigate the impacts of EV recharging at LV networks
CN113346471B (en) Method for judging configuration and running rationality of arc suppression coil of running transformer substation
CN115759532A (en) Main transformer capacity extension scheme evaluation method for 500 kV transformer station power supply area
CN115224687A (en) Power failure overhaul safety checking method and system for power transmission and transformation equipment below 220KV
RU2705517C1 (en) Stand for calculation of short circuit currents of inter-substation zone of traction ac network
Ford et al. The probabilistic approach to substation bus short-circuit design
CN114844130A (en) Phase modulator optimal configuration method and system for improving voltage intensity of power grid
JPH07241035A (en) Method for stabilizing single separated system
Blinov et al. Analysis of the effectiveness fault indicators use for control overhead power lines
CN109995026B (en) Genetic algorithm-based hybrid alternating current-direct current power distribution network comprehensive planning method
Fila et al. Modelling and Analysis of Enhanced TAPP scheme for distribution networks
Dai Voltage control of distribution networks with distributed generation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant