CN104901275A - Wide area protection control system based on PTN communication technology and IEEE1588 network time setting protocol - Google Patents
Wide area protection control system based on PTN communication technology and IEEE1588 network time setting protocol Download PDFInfo
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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
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Abstract
Provided is a wide area protection control system based on a PTN communication technology and an IEEE1588 network time setting protocol. The system has the following functions: having a transformer station domain protection function by sharing data in the transformer stations through a high-speed data network on the basis of a high-speed data communication network and network time setting synchronous data; having an area protection function by making a plurality of closely associated transformer stations serve as an area power grid and sending data of all the transformer stations within the high-speed data network to area main stations; and having a wide area protection function by making a plurality of closely associated area power grids serve as a wide area power grid and sending data of all the area main stations to wide area main stations through the high-speed data network. The area protection functions of the system are controlled and scheduled on the basis of the overall situation of area power grids, so the system is more effective and reasonable compared with a conventional control device utilizing interval configurations. In terms of wide area protection, safe and stable control functions enabling tripping, load shedding, quick power reduction and the like are achieved. The wide area protection control system is a synchronous data system based on a PTN optical network and an IEEE1588, reaches one microsecond in time setting precision, and fully meets wide area stable control requirements.
Description
Technical field
The invention belongs to relay protection of power system and safety control technology field, in particular to one based on PTN (Packet Transport Network, Packet Transport Network, be characterized between IP operation and bottom light-transmitting medium, be provided with an aspect, the requirement that it transmits for the sudden of Packet Service flow and statistic multiplexing and designing, be core with Packet Service and support that multi-service provides, there is lower overall use cost (TCO), act on the traditional advantage of optical transport simultaneously, comprise high availability and reliability, efficient bandwidth management mechanism and traffic engineering, OAM and webmaster easily, easily extensible, higher fail safe etc.) optical-fiber network mechanics of communication and IEEE1588 network pair time agreement wide area protection technology.
Background technology
Along with the development of Power System Interconnection and electricity market, electric power system will day by day close to its operational limit, and its operation and control will be more complicated, and the possibility that disturbance and fault occur is larger, and consequence is also more serious, and this has higher requirement to stability contorting.
Conventional relaying protection is used for realizing the automatic of fault element and excision, isolated fault fast after electric power system is broken down, to ensure the normal operation of the person and device security and no failure part.Existing relaying protection and automatic safety device can not adapt to the requirement of power system development, and subject matter is as follows:
Protection act criterion is all based on local measurement data, and its selectivity requires that relaying protection can only protect local network, does not consider the impact of fault on whole electrical network, is difficult to make comprehensive reflection to the objective system of the continuous change of operational mode.Protective device lacks effective coordination each other, is difficult to the safe and stable operation realizing the system overall situation, and (as generation cascading failure) can worsen the operation conditions of system in some cases.In high load capacity period, the through-put power on the interconnection of these keys may be close to the transmission power limit.The ability of the system disturbance rejection in this case run reduces greatly, is easy to cause all the other circuit overloads because an interconnection generation contingent disconnects and in succession disconnect, thus accident is spread, and even causes system crash.The U.S. 8.14 large-scale blackout is at first from several circuits disconnect in succession.
Although conventional backup protection has larger protection range, it optionally obtains will to sacrifice rapidity for cost, and operate time is long, is sometimes difficult to play due protective effect.In the middle of existing relay protection scheme, the time limit setting of backup protection follows ladder principle of timeliness, and in order to ensure selectivity, the operation time limit of backup protection may up to the several seconds.When electrical network scale and complexity increasing, this problem is more aobvious outstanding, still cannot well solve so far.
The Main Function of automatic safety device is the safe and stable operation safeguarding electrical network, in case of emergency takes load shedding, the mode such as machine and system splitting operation of cutting causes large-scale blackout to avoid mains breakdown.The automatic safety device of current electric power system and protective relaying device two overlap independently system, lacks effective communication therebetween and coordinate, accurately cannot reflect the situation of change of whole system.
Along with laying in a large number of the development of the computer and network communication technology, particularly optical fiber, for acquisition the Wide Area Power multiple spot electric parameters and quantity of state information provide necessary Information base.Meanwhile, along with the enhancing of computer process ability, provide hardware condition for relaying protection system and automated security control system being integrated.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention proposes a kind of wide area protection control system based on agreement when PTN optical-fiber network mechanics of communication and IEEE1588 network pair.This wide area protection can complete route protection, tranformer protection, bus protection, switch ma lf unction protection, UFLS, low-voltage load sheding function, the wide area prepared auto restart function of the Wide Area Power.
For achieving the above object, the present invention adopts following technical scheme: a kind of wide area protection control system based on agreement when PTN mechanics of communication and IEEE1588 network pair, and described wide area protection control system comprises protection substation, territory, station, locality protection main website and wide area protection main website; It is characterized in that:
Stand protection substation, territory based on agreement when PTN optical-fiber network and IEEE1588 network pair, utilizes PTN optical-fiber network the synchrodata in transformer station to be shared, realize substation areas of transformer station defencive function; To associate some transformer stations closely, as a regional power grid, utilizes PTN optical-fiber network to deliver to locality protection main website by the synchrodata of regional power grid Nei Ge transformer station, feasible region protecting control function; Some regional power grids closely will be associated, as a Wide Area Power, utilize PTN optical-fiber network to deliver to wide area protection main website by the synchrodata of the Wide Area Power Nei Ge locality protection main website, realize wide area protection controlling functions; Described wide area protection control system by be arranged on protected the Wide Area Power respectively stand territory, station protecting control device in protection substation, territory, be arranged on the locality protection control device in each locality protection main website and the wide area protection control device be arranged in wide area protection main website realizes territory, station, region, the protection of the Wide Area Power and control.
In described the Wide Area Power, all transformer stations each interval configuration data acquisition module and performance element, stand protection substation, territory when utilizing PTN optical-fiber network mechanics of communication and IEEE1588 agreement pair mechanism realize the voltage at each interval to transformer station belonging to this substation, territory, station, the synchro measure of electric current and quantity of state, and calculate corresponding voltage, the amplitude of electric current, phase place, frequency, power, by calculated voltage, the amplitude of electric current, phase place, frequency, power is together with the temporal information calculating the moment, and the state quantity data measured is together with measuring the temporal information in moment as shared synchrodata by PTN optical-fiber network transfer station territory protecting control device, the synchrodata that territory protecting control device of standing is shared according to this transformer station, judge whether that exception or fault appear in the element in this transformer station, our station is shared the locality protection control device in locality protection main website judged result that exception or fault appear in synchrodata and element delivered to belonging to our station by territory protecting control device of standing.
Locality protection control device in regional power grid carries out computation and analysis to judge whether protected regional power grid there occurs exception and fault according to the shared synchrodata that territory, the station protecting control device in territory protection in each station in the electrical network of one's respective area send; and then generate corresponding control command according to the result judged, assigned to territory, corresponding station protecting control device by PTN optical-fiber network.
Locality protection control device completes according to the shared synchrodata that multiple associated station territories protecting control device is uploaded and analyzes and judge, and is aided with station territory protecting control device and work in coordination with according to the result of determination of this locality and protects and controlling functions.
The wide area protection control device be arranged in wide area protection main website carries out computation and analysis to judge whether protected the Wide Area Power there occurs exception and fault according to the shared synchrodata that comprised each locality protection control device send; and then generate corresponding control command according to the result judged, assigned to corresponding locality protection control device by PTN optical-fiber network.
For the interconnector between the regional power grid belonging to the Wide Area Power and the circuit in regional power grid, circuit in the Wide Area Power can be used differential protection and integrated form backup protection by wide area protection control device and locality protection control device respectively simultaneously.
Integrated form backup protection adopts 2 segmentation distance protections, 2 sections of zero-sequence voltage injection, TV break rear 2 sections of overcurrent protections and overload protection.When certain circuit in the Wide Area Power because overload or fault cause this circuit out of service; this circuit affiliated area protecting control device or territory, station protecting control device can improve overload protection current ration and the time definite value of same power section circuit automatically, thus avoid cascading trip accident.
When territory, described station protecting control device detects and determines line failure belonging to our station; send out tripping operation by PTN optical-fiber network to the performance element of corresponding interval and make tripping faulty line each side circuit breaker; after setting time delay; if faulty line also has electric current; then think this breaker failure; then sent out the circuit breaker of jumping and making this faulty line upper level of tripping to corresponding interval performance element by PTN optical-fiber network by territory, station protecting control device, avoid the further expansion of accident.
After described regional power grid breaks down and successfully excises fault, locality protection control device is according to regional power grid power distribution situation and regional power grid ruuning situation, and starting region prepared auto restart function, restores electricity, and reduces dead electricity scope.Locality protection control device calmodulin binding domain CaM electrical network shares synchrodata, meritorious, idle, the frequency of each node of COMPREHENSIVE CALCULATING regional power grid, the situation after the prepared auto restart action of discreet area, to reach the object that intelligent restoration is powered.
It is described when the Wide Area Power makes a difference the large disturbances of the Wide Area Power safety and stability; wide area protection control system can realize machine of cutting, cutting load, subtract security and stability control functions such as exerting oneself fast; this wide area protection control system is the synchrodata system based on IEEE1588; pair time precision can reach 1 microsecond, meet the requirement of the Wide Area Power security and stability control completely.
The present invention has following useful technique effect: synchrodata when the present invention is based on high-speed data communications network and network pair, considers to utilize high speed data network by the data sharing in transformer station, realizes substation areas of transformer station defencive function; To associate closely some transformer stations, as a regional power grid, utilizes high speed data network to deliver to region main website by the data of region Nei Ge transformer station, feasible region defencive function simultaneously; Some regional power grids closely will be associated, as a Wide Area Power, utilize high speed data network to deliver to wide area main website by the data of the Wide Area Power Nei Ge region main website, realize wide area protection function.This system realm defencive function be stand in the regional power grid overall situation height to carry out Control and Schedule; more effective than traditional control device pressing interval configuration; more reasonable; this wide area protection can realize machine of cutting, cutting load, subtract security and stability control functions such as exerting oneself fast; this wide area protection is the synchrodata system based on PTN optical-fiber network and IEEE1588; pair time precision can reach 1 microsecond, meet the requirement that wide area is surely controlled completely.
Accompanying drawing explanation
Be illustrated in figure 1 territory, station of the present invention Protection control system structural representation.
Be illustrated in figure 2 locality protection Control system architecture schematic diagram of the present invention.
Be illustrated in figure 3 wide area protection Control system architecture schematic diagram of the present invention.
Embodiment
According to Figure of description, technical scheme of the present invention is described in further detail below.The invention discloses a kind of wide area protection Control protection system based on agreement when PTN optical-fiber network mechanics of communication and IEEE1588 network pair, this wide area protection is based on mechanism when high-speed data communications network and Network Synchronization pair, high speed data network is utilized the synchrodata in transformer station to be shared, realize substation areas of transformer station defencive function, as shown in Figure 1; To associate closely some transformer stations, as a regional power grid, utilizes high speed data network to deliver to region main website by the synchrodata of region Nei Ge transformer station simultaneously, feasible region protecting control function, as shown in Figure 2; Some regional power grids closely will be associated, as a Wide Area Power, utilize high speed data network to deliver to wide area main website by the synchrodata of the Wide Area Power Nei Ge region main website, realize wide area protection controlling functions, as shown in Figure 3.Described wide area protection realizes territory, station, region, the protection of the Wide Area Power and control by the intelligent protection control device be arranged in protected the Wide Area Power each region master node and station substation, territory node.Whole system structure as shown in Figure 1, 2, 3.
Transformer station's each interval configuration data acquisition module of described wide area protection and performance element, when system utilizes PTN optical-fiber network mechanics of communication and IEEE1588 agreement pair, mechanism realizes each transformer station of the Wide Area Power, the voltage at each interval of power plant station belonging to substation, territory, the synchro measure of electric current and quantity of state, and calculate the voltage of described correspondence, the amplitude of electric current, phase place, frequency, the information such as power, by high speed data network by calculated line voltage, the amplitude of electric current, phase place, frequency, the information such as power and the state quantity data measured are sent to this substation areas of transformer station protecting control device together with the temporal information calculating the moment, to stand the shared synchrodata of territory protecting control device according to this website, judge whether that exception or fault appear in the element in our station, and then locality protection control device territory protecting control device result that our station is calculated in station delivered to belonging to our station.The territory protecting control device of standing is the action command that issues of execution area protecting control device simultaneously, records various information and the command information of our station simultaneously, in order to query analysis in the future.
Locality protection control device in regional power grid carries out computation and analysis to judge whether protected regional power grid there occurs exception and fault according to the shared synchrodata that territory, electrical network station, one's respective area protecting control device send and status information data; and then generate corresponding control command according to the integrated information of the result judged and regional power grid, assigned to territory, corresponding station protecting control device by network.Locality protection control device needs the data processing territory, multiple station protecting control device, just can complete and analyze and judge, and is aided with station territory protecting control device and work in coordination with according to the result of determination of this locality and protects and controlling functions.Locality protection control device is the data collected of real-time storage simultaneously, and record is assigned to the various order of territory, station protecting control device and other information of sending, in order to query analysis in the future.
Wide area protection control device in the Wide Area Power carries out computation and analysis to judge whether protected the Wide Area Power there occurs exception and fault according to the shared synchrodata that comprised locality protection control device send and status information data; and then generate corresponding control command according to the integrated information of the result judged and the Wide Area Power, assigned to corresponding locality protection control device by network.Wide area protection control device needs to process the data that multiple locality protection controls, and just can complete and analyze and judge, and be aided with locality protection control device according to result of determination work in coordination with and protected and controlling functions.Wide area protection control device is the data collected of real-time storage simultaneously, and record is assigned to the various order of locality protection control device and other information of sending, in order to query analysis in the future.
For the interconnector between the regional power grid belonging to the Wide Area Power, wide area protection control device adopts differential protecting technology to carry out fault verification, for the circuit with branch, using the side of one end of branch nearest for system of distance power supply as differential protection, as the other side of differential protection after the electric current of other branch being done phasor and calculating, using the phasor of both sides electric current and amplitude as differential current, using the amplitude of both sides electric current phasor difference as stalling current, ratio-restrained characteristic is adopted to judge; Because data syn-chronization is also shared; regional power grid interconnectors all in the Wide Area Power can be used differential protecting technology to judge by wide area protection control device simultaneously; accurate judgement faulty line, when there is current transformer circuit supervision fail, the setting according to control word determines whether Blocking Differential Protection.
For the interconnector between the regional power grid belonging to the Wide Area Power; wide area protection control device utilizes the synchrodata of the interconnector received to carry out integrated protection; the distance protection of protection employing 2 segmentation, 2 sections of zero-sequence voltage injection, TV break rear 2 sections of overcurrent protections, overload protection.
For the interconnector between the regional power grid belonging to the Wide Area Power, when differential protection, distance protection 1 section, zero-sequenceprotection 1 section all do not determine fault, line direction incidence matrices is used to judge fault point and time delay excision fault, the Wide Area Power system relationship matrix is formed according to the topological structure of protected the Wide Area Power system, need the location status information real time modifying the Wide Area Power system relationship matrix according to the circuit breaker that each locality protection control device send simultaneously, adopt direction component to carry out the screening of faulty line; Forward and reverse judged result of the orientation measurement element of current line is sent to wide area protection control device by the locality protection control device belonging to interconnector; wide area protection control device, according to the direction component judged result that the incidence matrices of protected wide area power system topological structure and each locality protection control device send, filters out faulty line through integrated treatment.
When certain interconnector in the Wide Area Power because overload or fault cause this circuit out of service; this circuit affiliated area protecting control device improves overload protection current ration and the time definite value of same power section circuit automatically, thus avoids cascading trip accident.
When the Wide Area Power system voltage is lower than predetermined value, start low-voltage load sheding, the region that selective system voltage is minimum, send the order of low-voltage load sheding then to this locality protection control device; Again adjust the system voltage of all regional power grids in the Wide Area Power, the region that selective system voltage is minimum again, send the order of low-voltage load sheding to this locality protection control device; Repeat above step, until the Wide Area Power system voltage returns to allowed band.
When the Wide Area Power system frequency is lower than predetermined value, start UFLS, the region that selective system frequency is minimum, send the order of UFLS then to this locality protection control device; Again adjust the system frequency of all regional power grids in the Wide Area Power, the region that selective system frequency is minimum again, send the order of UFLS to this locality protection control device; Repeat above step, until the Wide Area Power system frequency returns to allowed band.
For circuit in regional power grid, intelligent protection control device in region adopts differential protecting technology to carry out fault verification, for the circuit with branch, using the side of one end of branch nearest for distance areas network system power supply as differential protection, as the other side of differential protection after the electric current of other branch being done phasor and calculating, using the phasor of both sides electric current and amplitude as differential current, using the amplitude of both sides electric current phasor difference as stalling current, adopt ratio-restrained characteristic judge; Due to data sharing; circuits all in regional power grid can be used differential protecting technology to judge by locality protection control device simultaneously; accurate judgement faulty line, when there is current transformer circuit supervision fail, the setting according to control word determines whether Blocking Differential Protection.
For circuit and other elements of belonging to a certain website, territory protecting control device of standing utilizes the synchrodata that this website send entirely to stand integrated protection, and wherein route protection adopts 2 sections of overcurrent protections after 2 segmentation distance protections, 2 sections of zero-sequence voltage injection, TV broken string, overload protection; Main transformer and backup protection adopt phase segregated differential protection, zero sequence differential protection, compound voltage lockout directional over-current protection.
For circuit in regional power grid, when differential protection and distance protection quick-break, when zero-sequenceprotection quick-break does not all determine fault, line direction incidence matrices is used to judge fault point and time delay excision fault, according to the topological structure forming region network system incidence matrices of protected area network system, need the circuit breaker position state information real time modifying regional power grid system relationship matrix according to territory, each station protecting control device send simultaneously, direction component is adopted to carry out the screening of faulty line, forward and reverse judged result of the orientation measurement element of current line is sent to locality protection control device by locality protection control device, according to the direction component judged result that the incidence matrices of protected regional power system topological structure and territory, each station protecting control device send, faulty line is filtered out through integrated treatment.
When certain circuit in regional power grid because overload or fault cause this circuit out of service, belonging to this circuit, territory, station protecting control device improves circuit overload protective current definite value and the time definite value of same power section automatically, thus avoids cascading trip accident.
When regional power grid system voltage is lower than predetermined value, start low-voltage load sheding, the substation bus bar that selective system voltage is minimum, in conjunction with the order of the low-voltage load sheding that wide area protection control device issues, this bus excises the load that rank is minimum; Again adjust the voltage of all substation bus bars in regional power grid, the substation bus bar that selective system voltage is minimum again, in conjunction with the order of the low-voltage load sheding that wide area protection control device issues, excises the load that on this bus, rank is minimum; Repeat above step, until regional power grid system voltage returns to allowed band.
When regional power grid system frequency is lower than predetermined value, start UFLS, the substation bus bar that selective system frequency is minimum, in conjunction with the order of the UFLS that wide area protection control device issues, then excises the minimum load of rank on this bus; Again adjust the frequency of all substation bus bars in regional power grid, the substation bus bar that selective system frequency is minimum again, in conjunction with the order of the UFLS that wide area protection control device issues, excises the load that on this bus, rank is minimum; Repeat above step, until regional power grid system frequency returns to allowed band.
When territory, described station protecting control device detects and determines line failure belonging to our station; tripping operation order is sent out to the collection control performance element of corresponding interval by network; the trip signal that calmodulin binding domain CaM protecting control device sends and the trip signal that wide area protection control device sends, tripping faulty line each side circuit breaker.
When territory, described station protecting control device receives the trip signal that locality protection control device or wide area protection control device send; tripping operation order is sent out to the collection control performance element of corresponding interval by network; the judged result that combining station territory protecting control device is made according to local data, tripping faulty line each side circuit breaker.
When territory, described station protecting control device detects and determines line failure belonging to our station; control performance element by network to the collection of corresponding interval to send out tripping operation and make tripping faulty line each side circuit breaker; after setting time delay; if faulty line also has electric current; then think this breaker failure; then control performance element by network to corresponding interval collection by territory, station protecting control device and send out the circuit breaker of jumping and making this faulty line upper level of tripping, avoid the further expansion of accident.
After described regional power grid breaks down and successfully excises fault, locality protection control device is according to regional power grid power distribution situation and regional power grid ruuning situation, and starting region prepared auto restart function, restores electricity, and reduces dead electricity scope.Locality protection control device can share synchrodata by calmodulin binding domain CaM electrical network, and the data such as meritorious, idle, frequency of each node of COMPREHENSIVE CALCULATING regional power grid, the situation after the prepared auto restart action of discreet area, to reach the object that intelligent restoration is powered.
When described the Wide Area Power makes a difference the large disturbances of the Wide Area Power safety and stability; wide area protection control system can realize machine of cutting, cutting load, subtract security and stability control functions such as exerting oneself fast; this wide area protection control system is the synchrodata system based on IEEE1588; pair time precision can reach 1 microsecond, meet the requirement of the Wide Area Power security and stability control completely.
PTN optical-fiber network is all adopted to transmit between each locality protection control device belonging to described the Wide Area Power and wide area protection control device, territory, station protecting control device belonging to each regional power grid and locality protection control device, acquisition execution unit belonging to the transformer station of Ge Zhan territory and territory, station protecting control device; protocol realization the whole network time synchronized when utilizing IEEE1588 network pair; image data is synchronous, and quantity of state is synchronous.PTN optical-fiber network is the upgrade technique of present SDH mechanics of communication, there is the traditional advantage of SDH mechanics of communication, comprising high availability and reliability, efficiently bandwidth management mechanism and traffic engineering, easily OAM and webmaster, easily extensible, higher fail safe etc., is the technology more more advanced than SDH.Clock source has master clock source and standby clock source, is arranged on wide area protection main website.Relative to system when adopting GPS or the Big Dipper pair, the advantage of system when utilizing the clock system of agreement during IEEE1588 network pair to have not rely on outside pair, its security reliability has had large increase.
Claims (8)
1., based on a wide area protection control system for agreement when PTN mechanics of communication and IEEE1588 network pair, described wide area protection control system comprises protection substation, territory, station, locality protection main website and wide area protection main website; It is characterized in that:
Stand protection substation, territory based on agreement when PTN optical-fiber network and IEEE1588 network pair, utilizes PTN optical-fiber network the synchrodata in transformer station to be shared, realize substation areas of transformer station defencive function; To associate some transformer stations closely, as a regional power grid, utilizes PTN optical-fiber network to deliver to locality protection main website by the synchrodata of regional power grid Nei Ge transformer station, feasible region protecting control function; Some regional power grids closely will be associated, as a Wide Area Power, utilize PTN optical-fiber network to deliver to wide area protection main website by the synchrodata of the Wide Area Power Nei Ge locality protection main website, realize wide area protection controlling functions; Described wide area protection control system by be arranged on protected the Wide Area Power respectively stand territory, station protecting control device in protection substation, territory, be arranged on the locality protection control device in each locality protection main website and the wide area protection control device be arranged in wide area protection main website realizes territory, station, region, the protection of the Wide Area Power and control.
2. wide area protection control system according to claim 1, is characterized in that:
In described the Wide Area Power, all transformer stations each interval configuration data acquisition module and performance element, stand protection substation, territory when utilizing PTN optical-fiber network mechanics of communication and IEEE1588 agreement pair mechanism realize the voltage at each interval to transformer station belonging to this substation, territory, station, the synchro measure of electric current and quantity of state, and calculate corresponding voltage, the amplitude of electric current, phase place, frequency, power, by calculated voltage, the amplitude of electric current, phase place, frequency, power is together with the temporal information calculating the moment, and the state quantity data measured is together with measuring the temporal information in moment as shared synchrodata by PTN optical-fiber network transfer station territory protecting control device, the synchrodata that territory protecting control device of standing is shared according to this transformer station, judge whether that exception or fault appear in the element in this transformer station, the judged result that our station is shared synchrodata and element exception or fault by territory protecting control device of standing is delivered to the locality protection control device in the locality protection main website belonging to our station.
3. wide area protection control system according to claim 2, is characterized in that:
Locality protection control device in regional power grid carries out computation and analysis to judge whether protected regional power grid there occurs exception and fault according to the shared synchrodata that territory, the station protecting control device in territory protection in each station in the electrical network of one's respective area send; and then generate corresponding control command according to the result judged, assigned to territory, corresponding station protecting control device by PTN optical-fiber network.
4. wide area protection control system according to claim 3, is characterized in that:
Locality protection control device completes according to the shared synchrodata that multiple associated station territories protecting control device is uploaded and analyzes and judge, and is aided with station territory protecting control device and work in coordination with according to the result of determination of this locality and protects and controlling functions.
5. wide area protection control system according to claim 3, is characterized in that:
The wide area protection control device be arranged in wide area protection main website carries out computation and analysis to judge whether protected the Wide Area Power there occurs exception and fault according to the shared synchrodata that comprised each locality protection control device send; and then generate corresponding control command according to the result judged, assigned to corresponding locality protection control device by PTN optical-fiber network.
6. wide area protection control system according to claim 1, is characterized in that:
For the interconnector between the regional power grid belonging to the Wide Area Power and the circuit in regional power grid, circuit in the Wide Area Power can be used differential protection and integrated form backup protection by wide area protection control device and locality protection control device respectively simultaneously.
7. wide area protection control system according to claim 6, is characterized in that:
Integrated form backup protection adopts 2 segmentation distance protections, 2 sections of zero-sequence voltage injection, TV break rear 2 sections of overcurrent protections and overload protection.When certain circuit in the Wide Area Power because overload or fault cause this circuit out of service; this circuit affiliated area protecting control device or territory, station protecting control device can improve overload protection current ration and the time definite value of same power section circuit automatically, thus avoid cascading trip accident.
8. wide area protection control system according to claim 1, is characterized in that:
When territory, described station protecting control device detects and determines line failure belonging to our station; send out tripping operation by PTN optical-fiber network to the performance element of corresponding interval and make tripping faulty line each side circuit breaker; after setting time delay; if faulty line also has electric current; then think this breaker failure; then sent out the circuit breaker of jumping and making this faulty line upper level of tripping to corresponding interval performance element by PTN optical-fiber network by territory, station protecting control device, avoid the further expansion of accident.
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| CN106100138A (en) * | 2016-08-19 | 2016-11-09 | 国网浙江省电力公司 | A kind of wide area protection, control integral system and the method for being integrally formed pattern |
| CN106385011A (en) * | 2016-09-26 | 2017-02-08 | 中国电力工程顾问集团中南电力设计院有限公司 | Fault range identification device and identification method for intelligent regional spare power automatic switching system |
| CN106911416A (en) * | 2017-03-15 | 2017-06-30 | 中国南方电网有限责任公司 | Intelligent distribution network failure detector based on Packet Transport Network and wireless network |
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| CN106911416A (en) * | 2017-03-15 | 2017-06-30 | 中国南方电网有限责任公司 | Intelligent distribution network failure detector based on Packet Transport Network and wireless network |
| CN106911416B (en) * | 2017-03-15 | 2018-08-31 | 中国南方电网有限责任公司 | Intelligent distribution network failure detector based on Packet Transport Network and wireless network |
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