CN104113141A - Intelligent lengthways interconnected feeder line automatic control method - Google Patents
Intelligent lengthways interconnected feeder line automatic control method Download PDFInfo
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- CN104113141A CN104113141A CN201410370999.9A CN201410370999A CN104113141A CN 104113141 A CN104113141 A CN 104113141A CN 201410370999 A CN201410370999 A CN 201410370999A CN 104113141 A CN104113141 A CN 104113141A
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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
- 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
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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Abstract
The invention discloses an intelligent lengthways interconnected feeder line automatic control method for realizing easy fault location and zero-time power failure of a power-side non-fault region. The intelligent lengthways interconnected feeder line automatic control method specifically comprises steps of feeder line fault location, fault region isolation, power restoration of a load-side non-fault region and intelligent distributed emergency treatment considering transient fault. Information interaction is realized through an efficient lengthways communication protocol and adjacent intelligent distribution type distribution terminals in the same power supply topology network; the intelligent distribution type distribution terminal performs an intelligent lengthways interconnected feeder line automatic technology for overall treatment and logic judgment, so that a zero-time power failure function of the power-side non-fault region is realized, feeder line fault location can be carried out conveniently, the power supply reliability is improved efficiently, and the power failure time is shortened.
Description
Technical field
The present invention relates to a kind of feeder automation control method, belong to Distribution Automation Technology field.
Background technology
Power distribution network is as last link of electrical power trans mission/distribution system, and its degree that realizes automation is closely related with quality and reliability for electricity consumption.Intelligent distribution network is the important ring during intelligent grid is built, it is integrated in one the present computer technology, communication network technology, equipment on power distribution network is carried out to distant place real time monitoring, coordination and control, be improvement power supply quality, improve power supply reliability, expand power supply capacity, realize the important means that power distribution network high-efficiency and economic moves.
Common several feed line automatization systems comprise master station-centralized feeder automation (DA) system at present, voltage-type band time limit feed line automatization system, feed line automatization system based on automatic circuit, house dog circuit breaker mode feed line automatization system, fault detector modular system etc., but also there is defect in above-mentioned several feeder automation mode more or less, as long in the Fault Isolation time, need full line outage, some feeder automation mode even needs repeatedly to overlap to fix a breakdown, also or manual inspection mode investigate fault zone, reliability and the power supply quality of power supply have been had influence on.
Summary of the invention
In order to address the above problem, to realize, be easy to fault location and the power failure of the non-fault zone of mains side (being the upstream of fault point) zero-time, the invention provides the longitudinal interconnected feeder automation control method of a kind of intelligence, adopt following technical scheme:
The longitudinal interconnected configuration of intelligence of the present invention is as follows:
(1) intelligent distributed distribution terminal possesses intelligent distributed distribution terminal transmission fault message, the switch failure information to its adjacent switch, the fault message that reception is sent from the intelligent distributed distribution terminal of its adjacent switch, the function of switch failure information, realize self-healing troubleshooting by cooperatively interacting between intelligent distributed distribution terminal;
(2) each intelligent distributed distribution terminal can with station level devices communicating, and realize data acquisition and remote control function.
(3) between intelligent distributed distribution terminal, communicate by letter and take the optical fiber self-healing looped network based on GOOSE with station level devices communicating, or the Ethernet based on TCP/IP, and follow IEC61850 agreement.
(4) according to the actual opening and closing state of the operational mode of current electrical network and switch, by feeder switch of long-range set-up mode, be set to interconnection switch or block switch, corresponding intelligent distributed distribution terminal possesses corresponding self-healing recovery logic.
The inventive method mainly comprises the steps:
(1) feeder fault location
If a certain fault current that surpasses current setting that flow through mutually of block switch on distribution line, the corresponding intelligent distributed distribution terminal report over current fault signal of this block switch, and by longitudinal communication protocol (longitudinal communication protocol, mainly by DL/T 634.5104 stipulations are carried out to self-defined expansion, and by GOOSE message fast transport, improve the transfer rate of fault-signal, thereby reduce fault handling time) to adjacent intelligent distributed distribution terminal, send over current fault information;
If only there is an intelligent distributed distribution terminal report over current fault signal in same power supply topological network, fault occurs in the distribution region that this block switch is end points;
If have two and above intelligent distributed distribution terminal report over current fault signal in same power supply topological network, fault occurs in the distribution region that this block switch is positioned at;
(2) fault section isolation
(2.1) in the distribution region that a certain block switch is end points if take, all do not break down, even if this block switch has flow through fault current, the isolation of also not tripping of this block switch;
(2.2) in the distribution region that a certain block switch is end points if take, break down, this block switch trips immediately, isolated fault region;
(2.3) if a certain block switch is received the switch that the block switch that is adjacent is sent, refuse sub-signal, this block switch trips immediately, isolated fault region;
(3) the non-fault zone of load side restores electricity
(3.1) if a side dead electricity of interconnection switch, and fault occurs in and take in the distribution region that this interconnection switch is end points, this interconnection switch keeps gate-dividing state;
(3.2) if a side dead electricity of interconnection switch and take in the distribution region that this interconnection switch is end points does not all break down:
If in the combined floodgate delay time of adjusting in advance, receive that the tripping operation sending it back successively after trouble-free block switch isolation becomes function signal, this interconnection switch automatic closing, recovers the non-fault zone of load side (being the downstream of fault point) power supply;
If after the combined floodgate delay time of adjusting in advance, do not receive that the tripping operation sending it back successively after trouble-free block switch isolation becomes function signal, this interconnection switch keeps gate-dividing state;
(3.3) if interconnection switch is received the switch that the block switch that is adjacent is sent, refuse sub-signal, this interconnection switch keeps gate-dividing state;
(3.4), if the both sides of interconnection switch are all charged, this interconnection switch keeps gate-dividing state.
Further, while considering transient fault, intelligent distributed first aid process is as follows:
(4.1) for the block switch that has experienced fault current tripping operation, under the charged condition of this block switch one side, a high-speed reclosure function of open this block switch:
If this block switch high-speed reclosure failure also causes this block switch again to trip, this block switch of automatic blocking is in gate-dividing state, and sends reclosing failure information to the adjacent sectional switch of this block switch;
If the quick successful reclosing of this block switch, the adjacent sectional switch to this block switch sends successful reclosing information;
(4.2) for the block switch that does not experience fault current and tripped, the reclosing function of forbidding this block switch, in the certain hour after this block switch tripping operation:
If receive the reclosing failure information that the adjacent sectional switch of this block switch sends or do not receive any information that its adjacent sectional switch sends, this block switch of automatic blocking is in gate-dividing state;
If receive the successful reclosing information that this block switch adjacent sectional switch sends, drive this block switch to close a floodgate;
(4.3), for the block switch of not tripping operation and the block switch of successful reclosing, if receive the successful reclosing information that the adjacent sectional switch of this block switch sends, do not deal with.
Further, block switch in the intelligent distributed first-aid method of above-mentioned consideration transient fault comprises transformer station's gate out switch, and the longitudinal interconnected feeder automation treatment step of intelligence (the specific implementation step that Ji Dui transformer station gate out switch is controlled) of this transformer station's gate out switch is:
If 1. certain intelligent distributed distribution terminal collects an information that flows through fault current,, in the extremely of short duration delay time from protection starts, this intelligent distributed distribution terminal continues to collect the fault message of its adjacent switch;
2., after this extremely of short duration delay time arrives, according to the fault current information judgement of collecting, take in the distribution region that switch that this intelligent distributed distribution terminal controlled is end points whether have fault;
If 3. judging fault occurs in and take the distribution region that switch that this intelligent distributed distribution terminal controlled is end points, the switch trip that makes it control; Otherwise making its control switch is that previous status is constant.
By adopting technique scheme, the present invention realizes information interaction by adjacent intelligent distributed distribution terminal in efficiently longitudinal communication protocol and same power supply topological network, by intelligent distributed distribution terminal carry out integrated treatment, logic judges, realized the non-fault zone zero-time power failure of mains side function, can carry out easily feeder fault location, effectively improve power supply reliability, shortened interruption duration.
Accompanying drawing explanation
Fig. 1 is in the embodiment of the present invention, uses the schematic diagram of the longitudinal interconnected feeder automation control system of intelligence of the inventive method.
Fig. 2 is in the embodiment of the present invention, the matching relationship schematic diagram of time qualified scope Ji Yu transformer station's gate out switch trip time of distribution line fault in the longitudinal interconnected feed line automatization system of intelligence.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The inventive method is to realize on the longitudinal interconnected feed line automatization system of the intelligence shown in Fig. 1, and the longitudinal interconnected feed line automatization system of intelligence of the preferred embodiment comprises distribution main website, (the distribution substation of circuit 1: media first K1, media first K2, several distribution substations, the distribution substation of circuit 2: media second K2, media second K1), feeder line detection and control terminal FTU1, intelligent distributed distribution terminal DTU2, DTU3, DTU4, DTU5, feeder line detection and control terminal FTU6, block switch K1, block switch K2, block switch K3, block switch K4, block switch K5, block switch K7, block switch K8, block switch K9, block switch K10 and interconnection switch K6, distribution main website be arranged on the intelligent distributed distribution terminal DTU2 in each distribution substation, DTU3, DTU4, DTU5 is connected, feeder line detection and control terminal FTU1 is connected between circuit 1 end of incoming cables and intelligent distributed distribution terminal DTU2, feeder line detection and control terminal FTU10 is connected between circuit 2 ends of incoming cables and intelligent distributed distribution terminal DTU5, article two, between circuit, the block switch of adjacent distribution substation is interconnection switch K6.Described intelligent distributed distribution terminal inside is all provided with the DFT algoritic module that the signal of every half fundamental frequency is calculated, on intelligent distributed distribution terminal, be provided with following communication interface: two RJ45 Ethernet interfaces, four RS232/485 serial ports and longitudinal Communication Protocol Implementation Interface, described longitudinal Communication Protocol Implementation Interface comprises IECIEC60870-5-101 protocol interface, IEC60870-5-104 protocol interface and self-defined stipulations communication interface etc.Each intelligent distributed distribution terminal is all connected with two block switches, above-mentioned switch is realized communication function by the intelligent distributed distribution terminal of correspondence, between adjacent intelligent distributed distribution terminal, by longitudinal communication protocol, realize information interaction, the content of information interaction comprises fault message, position of the switch status signal, trips successfully, switch is refused to grade.After distribution line breaks down, intelligent distributed distribution terminal by signal own and adjacent intelligent distributed distribution terminal signal are carried out to integrated treatment, logic judges, before the action of transformer station gate out switch, realize the action that restores electricity of the non-fault zone of fault location, fault section isolation and load side.
The present invention specifically comprises the following steps:
(1), after line failure, start the longitudinal interconnected feeder automation control of intelligence and carry out fault location;
(2), after fault location success, the longitudinal interconnected feeder automation of intelligence is controlled and is carried out fault section isolation;
(3), after fault section isolation success, the longitudinal interconnected feeder automation control of intelligence is carried out the non-fault zone of load side and is restored electricity;
(4) consider instantaneity line fault, the longitudinal interconnected feeder automation of intelligence is controlled and is carried out the first aid of circuit transient fault.
Below each method is described respectively:
1, fault location:
(1) on distribution line, there is line fault, if a certain fault current that surpasses current setting, its corresponding intelligent distributed distribution terminal report over current fault signal of having flow through mutually of a certain block switch;
(2) by longitudinal communication protocol, to adjacent intelligent distributed distribution terminal, send over current fault information;
(3) if only there is an intelligent distributed distribution terminal report over current fault signal in same power supply topological network, fault occurs in the distribution region that this block switch is end points;
(4) if there are two above intelligent distributed distribution terminal report over current fault signals in same power supply topological network, fault occurs in the distribution region that this block switch is positioned at.
2, fault section isolation:
(1) in the distribution region that a certain block switch is end points if take, all do not break down, even if this block switch has flow through fault current, the isolation of also not tripping of this block switch;
(2) in the distribution region that a certain block switch is end points if take, break down, this block switch trips immediately, isolated fault region;
(3) if a certain block switch is received the switch that the block switch that is adjacent is sent, refuse sub-signal, this block switch trips immediately, isolated fault region.
3, the non-fault zone of load side restores electricity:
(1) if a side dead electricity of interconnection switch, and fault occurs in and take in the distribution region that this interconnection switch is end points, this interconnection switch keeps gate-dividing state;
(2) if a side dead electricity of interconnection switch, and take in the distribution region that this interconnection switch is end points and all do not break down: if in the combined floodgate delay time of adjusting in advance, receive that the tripping operation sending it back successively after the isolation of fault-free block switch becomes function signal, this interconnection switch automatic closing, recovers load side non-fault zone power supply; If after the combined floodgate delay time of adjusting in advance, do not receive that the tripping operation sending it back successively after the isolation of fault-free block switch becomes function signal, this interconnection switch keeps gate-dividing state;
(3) if interconnection switch is received the switch that the switch that is adjacent is sent, refuse sub-signal, this interconnection switch keeps gate-dividing state;
(4), if the both sides of interconnection switch are all charged, this interconnection switch keeps gate-dividing state.
4, the intelligent distributed first-aid method of consideration transient fault is:
(1) for the block switch that has experienced fault current tripping operation, under the charged condition of this block switch one side, a high-speed reclosure function of open this block switch: if the quick reclosing failure of this block switch cause this block switch again to trip, this block switch of automatic blocking is in gate-dividing state, and sends reclosing failure information to the adjacent sectional switch of this block switch; If the quick successful reclosing of this block switch, the adjacent sectional switch to this block switch sends successful reclosing information;
(2) for the block switch that does not experience fault current and tripped, the reclosing function of forbidding this block switch, in certain hour after this block switch tripping operation: if receive the reclosing failure information that the adjacent sectional switch of this block switch sends or do not receive any information that its adjacent sectional switch sends, this block switch of automatic blocking is in gate-dividing state; If receive the successful reclosing information that this block switch adjacent sectional switch sends, drive this block switch to close a floodgate;
(3), for the block switch of not tripping operation and the block switch of successful reclosing, if receive the successful reclosing information that the adjacent sectional switch of this block switch sends, do not deal with.
Block switch in the intelligent distributed first-aid method of considering transient fault comprises transformer station's gate out switch, and the longitudinal interconnected feeder automation treatment step of intelligence of above-mentioned block switch (comprising the 10kV import/export switch of transformer station and the block switch on feeder line) is:
If 1. certain intelligent distributed distribution terminal collects an information that flows through fault current (may from itself or its adjacent switch), in the extremely of short duration delay time from protection starts, continue to collect the fault message of its adjacent switch;
2. the judgement of this extremely of short duration delay time is received to rear basis fault current information take in the distribution region that switch that this intelligent distributed distribution terminal controlled is end points whether have fault;
If 3. judging fault occurs in and take the distribution region that switch that this intelligent distributed distribution terminal controlled is end points, the switch trip that makes it control; Otherwise making its control switch is that previous status is constant.
Fig. 2 shows the longitudinal interconnected feeder automation of the present embodiment intelligence and processes the matching relationship of time qualified scope Ji Yu transformer station's gate out switch trip time of distribution line fault; from this effect schematic diagram, can find out; after breaking down on 10KV distribution network line; can within the extremely short time, excise fault zone; before transformer station's gate out switch protection action; excision fault current, prevents the full line outage that causes because of fault, greatly the raising of degree power supply reliability.
The detailed description of above-mentioned preferred embodiment, is for clearer description the present invention, and is not the restriction to claim scope of the present invention, and involved technical characterictic in above-mentioned execution mode, as long as do not form to each other conflict, just can mutually not combine.The invention is not restricted to above-described embodiment, the technical scheme that all employings are equal to replacement or equivalence replacement formation all belongs to the scope of protection of present invention.
Claims (6)
1. the longitudinal interconnected feeder automation control method of intelligence, is characterized in that, comprises the steps:
(1) feeder fault location
If a certain fault current that surpasses current setting that flow through mutually of block switch on distribution line, the corresponding intelligent distributed distribution terminal report over current fault signal of this block switch, sends over current fault information to adjacent intelligent distributed distribution terminal;
If only there is an intelligent distributed distribution terminal report over current fault signal in same power supply topological network, judge that fault occurs in the distribution region that this block switch is end points;
If have two and above intelligent distributed distribution terminal report over current fault signal in same power supply topological network, judge that fault occurs in the distribution region that this block switch is positioned at;
(2) fault section isolation
(2.1) in the distribution region that a certain block switch is end points if take, all do not break down, even if this block switch has flow through fault current, the isolation of also not tripping of this block switch;
(2.2) in the distribution region that a certain block switch is end points if take, break down, this block switch trips immediately, isolated fault region;
(2.3) if a certain block switch is received the switch that the block switch that is adjacent is sent, refuse sub-signal, this block switch trips immediately, isolated fault region;
(3) the non-fault zone of load side restores electricity
(3.1) if a side dead electricity of interconnection switch, and fault occurs in and take in the distribution region that this interconnection switch is end points, this interconnection switch keeps gate-dividing state;
(3.2) if a side dead electricity of interconnection switch and take in the distribution region that this interconnection switch is end points and all do not break down:
If in the combined floodgate delay time of adjusting in advance, receive that the tripping operation sending it back successively after trouble-free block switch isolation becomes function signal, this interconnection switch automatic closing, recovers load side non-fault zone power supply;
If after the combined floodgate delay time of adjusting in advance, do not receive that the tripping operation sending it back successively after trouble-free block switch isolation becomes function signal, this interconnection switch keeps gate-dividing state;
(3.3) if interconnection switch is received the switch that the block switch that is adjacent is sent, refuse sub-signal, this interconnection switch keeps gate-dividing state;
(3.4), if the both sides of interconnection switch are all charged, this interconnection switch keeps gate-dividing state.
2. method according to claim 1, is characterized in that also comprising the step of the intelligent distributed first aid while considering transient fault:
(4.1) for the block switch that has experienced fault current tripping operation, under the charged condition of this block switch one side, a high-speed reclosure function of open this block switch, and:
If this block switch high-speed reclosure failure also causes this block switch again to trip, this block switch of automatic blocking is in gate-dividing state, and sends reclosing failure information to the adjacent sectional switch of this block switch;
If the quick successful reclosing of this block switch, the adjacent sectional switch to this block switch sends successful reclosing information;
(4.2) for the block switch that does not experience fault current and tripped, the reclosing function of forbidding this block switch, in the certain hour after this block switch tripping operation:
If receive the reclosing failure information that the adjacent sectional switch of this block switch sends or do not receive any information that its adjacent sectional switch sends, this block switch of automatic blocking is in gate-dividing state;
If receive the successful reclosing information that this block switch adjacent sectional switch sends, drive this block switch to close a floodgate;
(4.3), for the block switch of not tripping operation and the block switch of successful reclosing, if receive the successful reclosing information that the adjacent sectional switch of this block switch sends, do not deal with.
3. method according to claim 2, is characterized in that, the block switch in intelligent distributed First aid procedures during described consideration transient fault comprises transformer station's gate out switch, and the concrete steps that Dui Gai transformer station gate out switch is controlled are:
If 1. certain intelligent distributed distribution terminal collects an information that flows through fault current,, in the extremely of short duration delay time from protection starts, this intelligent distributed distribution terminal continues to collect the fault message of its adjacent switch;
2., after this extremely of short duration delay time arrives, according to the fault current information judgement of collecting, take in the distribution region that switch that this intelligent distributed distribution terminal controlled is end points whether have fault;
If 3. judging fault occurs in and take the distribution region that switch that this intelligent distributed distribution terminal controlled is end points, the switch trip that makes it control; Otherwise it is constant that its control switch maintains the original state.
4. according to the method described in claim 1 to 3 any one, it is characterized in that, described intelligent distributed distribution terminal carries out information interaction by longitudinal communication protocol and adjacent intelligent distributed distribution terminal.
5. method according to claim 4, is characterized in that, the content of described information interaction comprises that fault message, position of the switch status signal, tripping operation successful information, switch refuse sub-signal.
6. according to the method described in claim 1 to 3 any one, it is characterized in that, described intelligent distributed distribution terminal and station level equipment communicate, and realize data acquisition and remote control function.
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| CN106253252A (en) * | 2016-08-27 | 2016-12-21 | 国网山东省电力公司蓬莱市供电公司 | A kind of feeder automation fault self-recovery method of high fault tolerance |
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| CN104135080A (en) * | 2014-08-11 | 2014-11-05 | 国家电网公司 | Intelligent longitudinal interconnection feeder automation control method |
| CN104410165A (en) * | 2014-12-12 | 2015-03-11 | 新奥科技发展有限公司 | Micro-network interconnection method and system |
| CN104701825A (en) * | 2015-03-11 | 2015-06-10 | 国家电网公司 | Quick protection method applicable to intelligent distribution network |
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| CN106374624B (en) * | 2016-09-30 | 2018-11-02 | 国网江苏省电力公司扬州供电公司 | A kind of intelligence based on distributed feeder automation on the spot is studied and judged and expert's warning system and its working method |
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| CN108493928A (en) * | 2018-03-28 | 2018-09-04 | 国电南瑞科技股份有限公司 | Distributed feeder automation distribution line topology ad hoc network method |
| CN109687415A (en) * | 2018-12-27 | 2019-04-26 | 长园深瑞继保自动化有限公司 | The fault diagnosis isolation restoration methods and system of distributed data transport unit |
| CN109687415B (en) * | 2018-12-27 | 2020-08-04 | 长园深瑞继保自动化有限公司 | Fault diagnosis isolation recovery method and system for distributed data transmission unit |
| CN111289839A (en) * | 2020-03-11 | 2020-06-16 | 国网河北省电力有限公司电力科学研究院 | Distribution network single-phase earth fault section positioning method |
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| CN114157018A (en) * | 2021-10-25 | 2022-03-08 | 国网天津市电力公司电力科学研究院 | Distributed feeder automation recovery method based on line load rate and peer-to-peer communication |
| CN114157018B (en) * | 2021-10-25 | 2024-04-19 | 国网天津市电力公司电力科学研究院 | Distributed feeder automation recovery method based on line load rate and peer-to-peer communication |
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