CN103955200A - Movable mould test method for self-healing control function of power distribution network - Google Patents
Movable mould test method for self-healing control function of power distribution network Download PDFInfo
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- CN103955200A CN103955200A CN201410088880.2A CN201410088880A CN103955200A CN 103955200 A CN103955200 A CN 103955200A CN 201410088880 A CN201410088880 A CN 201410088880A CN 103955200 A CN103955200 A CN 103955200A
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Abstract
The invention provides a movable mould test method for a self-healing control function of a power distribution network. The method comprises the following steps: setting a state sequence on a relay tester, and determining a fault strategy; triggering the fault strategy according to set time through GPS signals by use of a movable mould tester, the movable mould tester being connected with the terminal row of an intelligent control terminal of the power distribution network for simulating a primary switch device; obtaining remote signaling information returned by the movable mould tester; starting the self-healing control of the power distribution network, controlling the corresponding switch of the power distribution network to isolate a fault within a minimum scope, and restoring power supply to other areas whose power is cut off due to the fault reason; and according to the remote signaling information and the remote measuring information of all switches in a fault area, determining a test result. By applying the technology provided by the invention, the technical difficulty of simulation of fault currents, which is generated at the time when devices are distributed in a cross-region mode, is solved, the dynamic simulation testing of an online operation system is realized, the test reliability is high, the repeatability is high, the method is simple and easily implemented, and the cost is low.
Description
Technical field
The present invention relates to electric power project engineering field, particularly relate to a kind of dynamic model method of testing of power distribution network self-healing control function.
Background technology
The essence of traditional distribution system current protection is an independently cell protection, its only detect flow through the electric current of institute's monitoring switch and determine protection action whether and action delay, and be indifferent to the protection action situation of adjacent switch.This is to cause the adjacent protection difficult main cause that cooperatively interacts.If the scope of monitoring for protection is expanded to one group of switch that the switch that is connected is even connected by a point, the cooperation of the superior and the subordinate's protection can be understood as the internal coordination of protection.Along with the development of the present computer technology and network technology, make the coordination realizing between protection by network service become possibility.Now the analog quantity of different location is after locality has been detected; status information, the on off state information etc. of just the data message of testing result, protection being differentiated to result supply different protections to share by network; make can to coordinate and coordinate between the protection of different location, thereby realize the self-healing control of power distribution network.
The on-the-spot realistic simulation test of power distribution network self-healing control function cannot be carried out because needs change power supply mode or have a power failure.Whole group of transmission test link is many, and due to tested to as if cross-region (generally can reach several kilometers, tens of kilometers etc.) that distribute, produce fault current owing to having no idea and allow each equipment under test sense, therefore whether the operation when being difficult to test it and tackling various fault is accurate, cannot decision operation whether meet predetermined logic.
Summary of the invention
Based on this, be necessary for above-mentioned technical matters, a kind of dynamic model method of testing of power distribution network self-healing control function is provided.
A dynamic model method of testing for power distribution network self-healing control function, comprises the steps:
Set the status switch on relay protection tester according to fault type and the remote measurement of the each switch of power distribution network interconnection changes while breaking down actual size and sequential in advance, determine failure strategy;
Set the status switch on relay protection tester according to fault type and the remote measurement of the each switch of power distribution network interconnection changes while breaking down actual size and sequential in advance, determine failure strategy;
Utilize dynamic model tester, and trigger described failure strategy by gps signal by setting-up time, wherein, described dynamic model tester is connected on the terminal row of control of intelligent terminal of power distribution network, for simulating switchgear No. one time;
Change according to the remote measurement of the status switch analog switch of relay protection tester, start the defencive function of conventional formula according to remote measurement size, and obtain the remote signalling information that dynamic model tester returns;
Start power distribution network self-healing control function according to the remote measurement of each switch relevant in fault power distribution network interconnection, remote signalling information, control the corresponding switch of power distribution network by fault isolation at minimum zone, and recover other power supply because of failure cause power supply interrupted district;
Determine test result according to remote signalling information and the telemetry intelligence (TELINT) of all switches in fault zone.
The dynamic model method of testing of above-mentioned power distribution network self-healing control function, can judge, in the time of reply different faults strategy, whether the actual reply action of power distribution network self-healing control function is correct; Improve the reliability of test, action policy simultaneously can full test power distribution network self-healing control function reply different faults time, realize the dynamic model test of online operational system being carried out to network type self-healing control function, the secondary circuit that the relevant apparatus using in test process only need access feed circuit just can carry out, and can not affect normal power supply, the credibility of test is high, repeatable strong, simple, with low cost, suitablely generally apply.
Brief description of the drawings
Fig. 1 is the dynamic model method of testing process flow diagram of power distribution network self-healing control function;
Fig. 2 is the system architecture schematic diagram of the online dynamic model test of power distribution network self-healing control system;
Fig. 3 is the dynamic model tester of test site and the physical cabling figure of relay protection tester;
Fig. 4 is the initial launch constitutional diagram of the distribution feeder group chosen;
Fig. 5 is the on off state schematic diagram triggering after L1 fault;
Fig. 6 is the on off state schematic diagram after restoring electricity.
Embodiment
The embodiment of the dynamic model method of testing below in conjunction with accompanying drawing to power distribution network self-healing control function of the present invention is described in detail.
Shown in figure 1, Fig. 1 is the dynamic model method of testing process flow diagram of power distribution network self-healing control function, comprises the steps:
Step S10, sets the status switch on relay protection tester according to fault type and the remote measurement of the each switch of power distribution network interconnection changes while breaking down actual size and sequential in advance, determines failure strategy;
Step S20, utilizes dynamic model tester, and triggers described failure strategy by gps signal by setting-up time, wherein, described dynamic model tester is connected on the terminal row of control of intelligent terminal of power distribution network, for simulating switchgear No. one time, can analog remote signaling and telesignalisation change;
Concrete, the remote signalling information of access dynamic model tester, each dynamic model tester by GPS carry out to time, utilize described remote signalling information to overturn to described status switch according to setting-up time, trigger described failure strategy.
Step S30, changes according to the remote measurement of the status switch analog switch of relay protection tester, starts the defencive function of conventional formula, and obtain the remote signalling information that dynamic model tester returns according to remote measurement size;
Concrete, changing according to the remote measurement of the status switch analog switch of relay protection tester, the actual sequential changing according to described remote measurement and order are sent remote measurement control command, start remote measurement measure according to described remote measurement control command; The control of intelligent terminal of power distribution network judges whether remote measurement measured value mates with protection definite value, in the time that remote measurement measured value mates with protection definite value, starts the defencive function of corresponding conventional formula; After defencive function starts, the switch of power distribution network performs an action, a switchgear of dynamic model tester simulation, and return to corresponding remote signalling information to control of intelligent terminal.
Step S40, start power distribution network self-healing control function according to the remote measurement of each switch relevant in fault power distribution network interconnection, remote signalling information, control power distribution network corresponding switch by fault isolation at minimum zone, and recover other power supply because of failure cause power supply interrupted district;
Concrete, obtain remote measurement, the remote signalling information of each switch relevant in the fault power distribution network interconnection that produces fault; Start power distribution network network formula defencive function according to described remote measurement, remote signalling information, power distribution network carries out self-healing control; Judge whether described remote measurement, remote signalling information meet remote control condition, if meet, remote control respective switch is isolated faulty section, sent a telegram in reply in the region that restores electricity in fault zone, control power distribution network corresponding switch by fault isolation at minimum zone, and recover other power supply because of failure cause power supply interrupted district.
Step S50, determines test result according to remote signalling information and the telemetry intelligence (TELINT) of all switches in fault zone.
Concrete, obtain remote signalling information and the telemetry intelligence (TELINT) of all switches in fault zone according to abovementioned steps, remote signalling information and telemetry intelligence (TELINT) analysis are obtained to test result.
Technical scheme of the present invention, can judge, in the time of reply different faults strategy, whether the actual reply action of power distribution network self-healing control function is correct; Improve the reliability of test, action policy simultaneously can full test power distribution network self-healing control function reply different faults time, the secondary circuit that the relevant apparatus using in test process only need access feed circuit just can carry out, can not affect normal power supply, the equipment that has solved cross-region distribution produces the technical difficulty of simulated failure electric current simultaneously, has realized the dynamic simulant test of online operational system, and the credibility of test is high, repeatable high, simple, with low cost.
In such scheme implementation process; only need to substitute an original switchgear by dynamic model tester; remote measurement value is simulated by relay protection tester device; remainder and on-the-spot practical operation situation (comprising defencive function) in full accord; for the situation of different distribution feeder groups; only need to increase relay protection tester, dynamic model tester and the GPS timing device suitable with actual motion; the connection principle of each power distribution room is in full accord, has that replicability is strong, a feature of wide accommodation, flexible operation.
For the ease of understanding technical scheme of the present invention, set forth principle of the present invention below in conjunction with an application example.
In this application example, shown in figure 2, Fig. 2 is the system architecture schematic diagram of the online dynamic model test of power distribution network self-healing control system; DTU1～the DTU4 of A～D distribution substation; respectively by distribution scheduling data network access distribution self-healing system; distribution self-healing system is connected to the protection side control device at M station by major network data dispatching net, by the dynamic model tester state of analog switch S0～S9 respectively, relay protection tester analog telemetering value.
Shown in figure 3, the dynamic model tester that Fig. 3 is test site and the physical cabling figure of relay protection tester; The proving installation using comprises relay protection tester, dynamic model tester and GPS timing device, the control of intelligent terminal line of proving installation and power distribution network, it should be noted that, the mode of connection shown in Fig. 3 is an application example figure, does not form the feature of proving installation is limited.
Shown in figure 4, Fig. 4 is the initial launch constitutional diagram of the distribution feeder group chosen, is mainly the L1 line fault between analog D TU1 and DTU2, DTU(Data Transfer unit) be control of intelligent terminal.
(1) set the status switch on relay protection tester according to fault type and the remote measurement of the each switch of power distribution network interconnection changes while breaking down actual size and sequential in advance.
1) status switch of S0 switch:
| Status switch numbering | Remote measurement |
| Status switch 1(normal condition) | Ua=5.9kV I=182A remote measurement dynamically slightly changes |
| Status switch 2(L1 fault) | Ua=5.9kV I=1200A remote measurement dynamically slightly changes |
| After status switch 3(S2 switch separating brake) | Ua=5.9kV I=30A remote measurement dynamically slightly changes |
2) status switch of S2 switch:
3) status switch of S3 switch:
4) status switch of S6 switch:
5) status switch of S7 switch:
6) status switch of S8 switch:
7) status switch of S9 switch:
(2) carry out the upset between status switch by the remote signalling of dynamic model tester of access, realize the triggering of failure strategy, trigger L1 fault, S2 fast tripping protection action tripping operation, S3 starts the function separating brake of interlocking dead electricity time delay separating brake locking, S2, S3, S4, S5, S6, S7 switch all have a power failure, and shown in figure 5, Fig. 5 is the on off state schematic diagram triggering after L1 fault; In this process, remote measurement is simulated by status switch.
(3) power distribution network self-healing control functional network formula protection, the function of the switch activated one-sided decompression time-delay closing of S8 is closed a floodgate, and S4, S5, S6, S7 switch restore electricity, and shown in figure 6, Fig. 6 is the on off state schematic diagram after restoring electricity; Analysis remote measurement, remote signalling information are determined test result.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (4)
1. a dynamic model method of testing for power distribution network self-healing control function, is characterized in that, comprises the steps:
Set the status switch on relay protection tester according to fault type and the remote measurement of the each switch of power distribution network interconnection changes while breaking down actual size and sequential in advance, determine failure strategy;
Utilize dynamic model tester, and trigger described failure strategy by gps signal by setting-up time, wherein, described dynamic model tester is connected on the terminal row of control of intelligent terminal of power distribution network, for simulating switchgear No. one time;
Change according to the remote measurement of the status switch analog switch of relay protection tester, start the defencive function of conventional formula according to remote measurement size, and obtain the remote signalling information that dynamic model tester returns;
Start power distribution network self-healing control function according to the remote measurement of each switch relevant in fault power distribution network interconnection, remote signalling information, control the corresponding switch of power distribution network by fault isolation at minimum zone, and recover other power supply because of failure cause power supply interrupted district;
Determine test result according to remote signalling information and the telemetry intelligence (TELINT) of all switches in fault zone.
2. the dynamic model method of testing of power distribution network self-healing control function according to claim 1, is characterized in that, utilizes dynamic model tester, and the step that triggers described failure strategy by setting-up time by gps signal comprises:
The remote signalling information of access dynamic model tester, each dynamic model tester by GPS carry out to time, utilize described remote signalling information to overturn to described status switch according to setting-up time, trigger described failure strategy.
3. the dynamic model method of testing of power distribution network self-healing control function according to claim 1; it is characterized in that; change according to the remote measurement of the status switch analog switch of relay protection tester; start the defencive function of conventional formula according to remote measurement size, and the step of obtaining the remote signalling information that dynamic model tester returns comprises:
Change according to the remote measurement of the status switch analog switch of relay protection tester, the actual sequential changing according to described remote measurement and order are sent remote measurement control command, start remote measurement measure according to described remote measurement control command;
The control of intelligent terminal of power distribution network judges whether remote measurement measured value mates with protection definite value, in the time that remote measurement measured value mates with protection definite value, starts the defencive function of corresponding conventional formula;
After defencive function starts, the switch of power distribution network performs an action, a switchgear of dynamic model tester simulation, and return to corresponding remote signalling information to control of intelligent terminal.
4. the dynamic model method of testing of power distribution network self-healing control function according to claim 1, it is characterized in that, start power distribution network self-healing control function according to the remote measurement of each switch relevant in fault power distribution network interconnection, remote signalling information, control power distribution network corresponding switch by fault isolation at minimum zone, and recover in time other step because of the power supply of failure cause power supply interrupted district and comprise:
Obtain remote measurement, the remote signalling information of each switch relevant in the fault power distribution network interconnection that produces fault;
Start power distribution network network formula defencive function according to described remote measurement, remote signalling information, power distribution network carries out self-healing control;
Judge whether described remote measurement, remote signalling information meet remote control condition, if meet, remote control respective switch is isolated faulty section, sent a telegram in reply in the region that restores electricity in fault zone, control power distribution network corresponding switch by fault isolation at minimum zone, and recover other power supply because of failure cause power supply interrupted district.
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| CN201410088880.2A CN103955200B (en) | 2014-03-11 | 2014-03-11 | Movable mould test method for self-healing control function of power distribution network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332970A (en) * | 2014-10-29 | 2015-02-04 | 云南电网公司电力科学研究院 | Pilot protection debugging method by GPS (global positioning system) timing |
| CN104635084A (en) * | 2015-02-03 | 2015-05-20 | 国家电网公司 | Distribution automation equipment transmission test method based on simulator station |
| CN111208382A (en) * | 2020-04-23 | 2020-05-29 | 广州思泰信息技术有限公司 | Electric power self-healing test method, device, system, main station and tester |
| CN113267702A (en) * | 2021-06-24 | 2021-08-17 | 广东电网有限责任公司 | Method and device for generating test case of power distribution network fault self-healing system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104332970A (en) * | 2014-10-29 | 2015-02-04 | 云南电网公司电力科学研究院 | Pilot protection debugging method by GPS (global positioning system) timing |
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| CN111208382A (en) * | 2020-04-23 | 2020-05-29 | 广州思泰信息技术有限公司 | Electric power self-healing test method, device, system, main station and tester |
| CN111208382B (en) * | 2020-04-23 | 2020-08-11 | 广州思泰信息技术有限公司 | Electric power self-healing test method, device, system, main station and tester |
| CN113267702A (en) * | 2021-06-24 | 2021-08-17 | 广东电网有限责任公司 | Method and device for generating test case of power distribution network fault self-healing system |
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