CN104898018B - One-phase earthing failure in electric distribution network tries to draw Detection ＆ Controling device automatically - Google Patents
One-phase earthing failure in electric distribution network tries to draw Detection ＆ Controling device automatically Download PDFInfo
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- CN104898018B CN104898018B CN201510224940.3A CN201510224940A CN104898018B CN 104898018 B CN104898018 B CN 104898018B CN 201510224940 A CN201510224940 A CN 201510224940A CN 104898018 B CN104898018 B CN 104898018B
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- 238000012545 processing Methods 0.000 claims abstract description 10
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- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000011217 control strategy Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000015556 catabolic process Effects 0.000 claims abstract description 5
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000013024 troubleshooting Methods 0.000 abstract description 4
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
Try to draw Detection ＆ Controling device, including telemetry-acquisition module, state-signal collection module, Collection module, logic judgment module, strategic control module, the policy enforcement module being connected with central processing unit automatically the invention provides a kind of singlephase earth fault；When singlephase earth fault occurs for bus, Collection module receives signal, central processing unit starts breakdown judge, the bus voltage value of monitoring, arc suppression coil actuating signal, bus single-phase earthing signal are obtained by telemetry-acquisition module, state-signal collection module automatically, and the criterion set with logic judgment module is compared, to determine nature of trouble；Control strategy is provided by strategic control module, policy enforcement module forms straighforward operation sequence according to control strategy, pushing to automation system for the power network dispatching by communication interface performs.The present apparatus carries out judgement processing by technology support system, can be more accurate, and shortens the lookup faulty line time, reduces maloperation probability, improves troubleshooting efficiency.
Description
Technical field
Try to draw Detection ＆ Controling device automatically the present invention relates to a kind of one-phase earthing failure in electric distribution network, belong to power system certainly
Dynamicization field.
Background technology
China's power distribution network is short due to that can not constitute with through based on grounding through arc mode, occurring after singlephase earth fault
Road loop, fault current is smaller, grid line voltage symmetrically still sustainable power supply, but needs to try to draw to send out in time by circuit in time
Now with isolated fault point, and recover power transmission as early as possible.
Existing faulty line investigation method is drawn by dispatcher's artificial examination of progress of issuing an order, and by artificial judgment voltage whether
Recover, with this determination fault coverage.It is inefficient according to present practice dispatcher's artificial treatment single-line ground failure.Because scheduling
Member's each single item operation is required for by flows such as operation, monitoring, and an operation of issuing an order probably needs 2 minutes, if running into bus
The more situation of upper circuit, the time for searching faulty line can be longer, and needs to carry out artificial judgment, to personnel's technical capability
Dependence it is larger, there is the unsafe factors such as unreasonable, the artificial operational error of drawing road order, signal misjudgment.
At present in field of distribution network, how quick and precisely to position fault section, realize that faulty line accurately judges automatically, be
The problem paid close attention to for a long time both at home and abroad.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art there is provided a kind of one-phase earthing failure in electric distribution network is automatic
Detection ＆ Controling device is drawn in examination, by present apparatus handling failure, all carries out judgement processing by technology support system, can be more
Accurately, and greatly shorten dispatcher search the faulty line time, reduce maloperation probability, improve troubleshooting efficiency.
The technical scheme provided according to the present invention, described one-phase earthing failure in electric distribution network tries to draw Detection ＆ Controling dress automatically
Put, including be connected with central processing unit telemetry-acquisition module, state-signal collection module, Collection module, logic judgment
Module, strategic control module, policy enforcement module, the telemetry-acquisition module, state-signal collection module, Collection module
Information interactive bus is connected to by communication interface with policy enforcement module, automation system for the power network dispatching is then connected to；
The telemetry-acquisition module, state-signal collection module monitor the phase voltage value of each substation bus bar, arc suppression coil in real time
Actuating signal, bus single-phase earthing signal；When singlephase earth fault occurs for bus, Collection module receives signal,
Central processing unit starts breakdown judge, obtains the bus voltage value of monitoring automatically by telemetry-acquisition module, state-signal collection module, disappears
Arc coil actuating signal, bus single-phase earthing signal, and be compared with the criterion of logic judgment module setting, to determine failure
Property；Control strategy is provided according to bus networks topology situation by strategic control module, policy enforcement module is according to control strategy
Straighforward operation sequence is formed, pushing to automation system for the power network dispatching by communication interface performs.
When monitoring bus three-phase voltage value wherein one is mutually less than the 10% of phase voltage, other two-phase voltages are more than line voltage
80%, and arc suppression coil actuating signal is transmitted, busbar grounding signal is transmitted, conditions above is met simultaneously when, the logic judgment mould
Block judges that earth fault occurs for bus, starts strategic control module.
The strategic control module will draw road order to be sent to policy enforcement module formation straighforward operation sequence, be adjusted by power network
Spend automated system and carry out examination drawing one by one, find out ground path.
It is an advantage of the invention that：Apparatus structure is simple, is easily installed；Device is mutually only with automation system for the power network dispatching
It is vertical, only it need to pass through communication interface interactive information；Flexibly, all kinds of logic criterions, strategy can be applicable device action pattern with self-defined
Scope is wide（20kV, 10kV power distribution network）.The present apparatus reduces manual intervention, realizes full-automatic intelligent, greatly improves work effect
Rate and power supply reliability.
Brief description of the drawings
Fig. 1 is the structured flowchart of the present invention.
Fig. 2 is apparatus function principle flow chart.
Fig. 3 is the judgement schematic diagram of logic judgment module.
Fig. 4 is the fault scenes schematic diagram in embodiment.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention includes：The telemetry-acquisition module 2 that is connected with central processing unit 1, state-signal collection module 3,
Collection module 4, logic judgment module 5, strategic control module 6, policy enforcement module 7, the telemetry-acquisition module
2nd, to be connected to information exchange by communication interface total for state-signal collection module 3, Collection module 4 and policy enforcement module 7
Line, is then connected to automation system for the power network dispatching（EMS）.
Under normal operation, telemetry-acquisition module 2, state-signal collection module 3 monitor each transformer station and specify element in real time
（10kV buses）Magnitude of voltage（Such as 10kV bus A, B, C three-phase voltages）, arc suppression coil actuating signal, bus single-phase earthing letter
Number.When singlephase earth fault occurs for bus, a phase voltage is reduced close to as 0, and the rise of other two-phases is line voltage, and arc blowout wire
" bus single-phase earthing " signal in motion compensation capacitance current, automation system for the power network dispatching is enclosed to transmit.Ground path switch is drawn
After opening, ground connection disappears, and voltage is normal again, " bus single-phase earthing " signal return.When singlephase earth fault occurs for bus, failure letter
Number acquisition module 4 is received after " bus single-phase earthing " signal, and central processing unit 1 starts breakdown judge, by telemetry-acquisition module 2,
The bus voltage value that acquisition is monitored automatically of state-signal collection module 3, arc suppression coil actuating signal, bus single-phase earthing signal, and with
The criterion that logic judgment module 5 is set is compared, to determine the nature of trouble of bus single-phase earthing.By strategic control module 6
Control strategy is provided according to bus networks topology situation, policy enforcement module 7 forms straighforward operation sequence according to control strategy, leads to
Cross communication interface and push to automation system for the power network dispatching execution.
As shown in Fig. 2 the present apparatus monitors each substation bus bar voltage and signal in real time, analyzed, judged by electrical wiring
Whether singlephase earth fault is occurred.Device sends a signal to dispatcher and carries out manual confirmation, and dispatcher confirms to return to dress after failure
Carry out troubleshooting is put, strategic control module 6 will draw road order to be sent to policy enforcement module 7 and be tried drawing one by one（It is final by
Automation system for the power network dispatching is performed）, find out ground path.
As shown in figure 3, the logic judgment principle of the present apparatus is：When（1）Monitoring bus three-phase voltage value wherein one is mutually less than
Phase voltage 10%, other two-phase voltages be more than line voltage 80%,（2）Arc suppression coil actuating signal is transmitted,（3）Busbar grounding is believed
Number transmit, conditions above is met simultaneously when, logic judgment module 5 judges that earth fault occurs for bus, starts strategic control module
6。
Totally 4, A stations 10kV circuits are set in embodiment, it is 111,112,113,114 to draw road order.Wiring is as shown in figure 4, figure
In show main transformer high side switch 301 and main transformer low-pressure side switch 101, horizontal line represents 10kV buses.
After occurring singlephase earth fault, present apparatus monitoring A station 10kV buses three-phase voltage values wherein B phases are less than phase voltage
10%, other two-phase A, C phase voltages be more than line voltage 80%, arc suppression coil actuating signal, busbar grounding signal.Logic judgment
Module 5 is judged as singlephase earth fault, is sent to dispatcher and carries out after manual confirmation, dispatcher's manual confirmation, sends confirmation letter
Cease to strategic control module 6, device according to road order 111,112,113,114 is drawn, draw one by one by examination.111 switches are pulled open first, because
111 circuits are not earth fault line, and busbar voltage does not change, and ground signalling is still transmitted, and device failure judgement circuit is not
111, then close 111 switches.Device pulls open 112 switches again, pulls open busbar voltage after 112 switches and recovers normal, three-phase electricity is flattened
Weighing apparatus, ground signalling involution, then device judge earth fault line for 112,112 circuits are fed back into dispatcher, then close 112 and are opened
Close, troubleshooting is completed.
By the present invention one-phase earthing failure in electric distribution network try automatically draw Detection ＆ Controling device, by fault wire the examination of road draw by
Current " manual remote control analytic type " rises to " full-automatic intelligent ", and the present apparatus passes through the technical support hand such as computer technology
Section, can quickly judge faulty line, quickly isolate trouble point, Rapid Implementation breakdown repair, fast quick-recovery customer power supply, significantly
Improve power supply reliability.
Claims (2)
1. one-phase earthing failure in electric distribution network try automatically draw Detection ＆ Controling device, it is characterized in that, including with central processing unit（1）Phase
Telemetry-acquisition module even（2）, state-signal collection module（3）, Collection module（4）, logic judgment module（5）, strategy
Control module（6）, policy enforcement module（7）, the telemetry-acquisition module（2）, state-signal collection module（3）, Collection
Module（4）And policy enforcement module（7）Information interactive bus is connected to by communication interface, power network schedule automation is then connected to
System；
The telemetry-acquisition module（2）, state-signal collection module（3）Phase voltage value, the arc blowout wire of each substation bus bar are monitored in real time
Enclose actuating signal, bus single-phase earthing signal；When singlephase earth fault occurs for bus, Collection module（4）Receive
Signal, central processing unit（1）Start breakdown judge, by telemetry-acquisition module（2）, state-signal collection module（3）It is automatic to obtain monitoring
Bus voltage value, arc suppression coil actuating signal, bus single-phase earthing signal, and and logic judgment module（5）The criterion of setting
It is compared, to determine nature of trouble；By strategic control module（6）Control strategy, plan are provided according to bus networks topology situation
Omit performing module（7）Straighforward operation sequence is formed according to control strategy, power network schedule automation system is pushed to by communication interface
System is performed；
When monitoring bus three-phase voltage value wherein one is mutually less than the 10% of phase voltage, other two-phase voltages are more than the 80% of line voltage,
And arc suppression coil actuating signal is transmitted, busbar grounding signal is transmitted, conditions above is met simultaneously when, the logic judgment module
（5）Judge that earth fault occurs for bus, start strategic control module（6）.
2. one-phase earthing failure in electric distribution network as claimed in claim 1 tries to draw Detection ＆ Controling device automatically, it is characterized in that, it is described
Strategic control module（6）Road order will be drawn to be sent to policy enforcement module（7）Straighforward operation sequence is formed, it is automatic by dispatching of power netwoks
Change system carries out examination one by one and drawn, and finds out ground path.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510224940.3A CN104898018B (en) | 2015-05-05 | 2015-05-05 | One-phase earthing failure in electric distribution network tries to draw Detection ＆ Controling device automatically |
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| CN201510224940.3A CN104898018B (en) | 2015-05-05 | 2015-05-05 | One-phase earthing failure in electric distribution network tries to draw Detection ＆ Controling device automatically |
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| CN104898018B true CN104898018B (en) | 2017-10-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871645B (en) * | 2016-06-16 | 2019-01-01 | 国网江苏省电力公司无锡供电公司 | Electric network fault automatic information collecting and distributing device |
| CN107167701A (en) * | 2017-03-06 | 2017-09-15 | 国网浙江义乌市供电公司 | Automatically method is sentenced in choosing to distribution singlephase earth fault circuit |
| CN111585340B (en) * | 2019-02-15 | 2022-07-22 | 南京南瑞继保电气有限公司 | Main power distribution network single-phase grounding pull-out auxiliary decision-making method based on multi-source data |
| CN110888015A (en) * | 2019-10-16 | 2020-03-17 | 国电南瑞科技股份有限公司 | Single-phase earth fault positioning method for power distribution automation system |
| CN110927621B (en) * | 2019-11-12 | 2022-12-27 | 上海宝钢工业技术服务有限公司 | Grounding detection positioning system for closed friction electric track of conveying chain |
| CN112688436B (en) * | 2021-03-15 | 2021-06-29 | 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 |
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| CN101872999A (en) * | 2010-07-07 | 2010-10-27 | 宁夏电力公司吴忠供电局 | Low-voltage alternating current power supply programmable switching system of substation |
| CN102611080A (en) * | 2012-03-16 | 2012-07-25 | 国电南瑞科技股份有限公司 | Main station type small current grounding control method |
| CN203014487U (en) * | 2012-11-13 | 2013-06-19 | 江苏省电力公司滨海县供电公司 | Low-current grounding exploration apparatus |
| CN203932988U (en) * | 2014-01-28 | 2014-11-05 | 济南置真电气有限公司 | A kind of low current grounding tripping operation and self-healing system |
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2015
- 2015-05-05 CN CN201510224940.3A patent/CN104898018B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| CN101872999A (en) * | 2010-07-07 | 2010-10-27 | 宁夏电力公司吴忠供电局 | Low-voltage alternating current power supply programmable switching system of substation |
| CN102611080A (en) * | 2012-03-16 | 2012-07-25 | 国电南瑞科技股份有限公司 | Main station type small current grounding control method |
| CN203014487U (en) * | 2012-11-13 | 2013-06-19 | 江苏省电力公司滨海县供电公司 | Low-current grounding exploration apparatus |
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