CN104518564B - Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method - Google Patents
Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method Download PDFInfo
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Abstract
The invention discloses a backup automatic switching apparatus with an area automatic switching function, used for a power supply system of a dual-source serial supply structure. The backup automatic switching apparatus comprises an area backup automatic switching device and a plurality of acquisition and execution units, the area backup automatic switching device is configured at any one power supply station or any one serial supply transformer station, the plurality of acquisition and execution units are respectively arranged at two power supply stations and each serial supply transformer station, and all the acquisition and execution units respectively interact real-time information with the area backup automatic switching device through a fiber communication network; and each acquisition and execution unit acquires analog quantity information of the station corresponding to each acquisition and execution unit, after converting the analog quantity information into switching quantity information, uploads the switching quantity information to the area backup automatic switching device, at the same time, receives switching-off and switching-on commands transmitted down by the area backup automatic switching device and executes switching-off and switching-on motion. By using the backup automatic switching apparatus provided by the invention, power supply can be quickly recovered for a power-off serial supply transformer station through switching-off and switching-on operation at a time when any one serial supply switch is taken as an open loop point. The invention also discloses a backup automatic switching method for a backup automatic switching apparatus with an area automatic switching function.
Description
Technical field
The present invention relates to a kind of automatic switching device of power system power transmission and distribution, particularly to a kind of microcomputer type stand-by power supply
Automatic bus and method.
Background technology
In recent years, backup auto-activating device is used widely in the electrical network of 220kV and level below, is maintaining the stabilization of power grids
Serve important function with improving the aspects such as power supply reliability.
Backup auto-activating device wants to play a role it is necessary to have stand-by power supply and the backup circuit breaker being in hot stand-by duty.When
During working power dead electricity, the switch of the former working power of backup auto-activating device tripping, the switch of the stand-by power supply that closes, realize stand-by power supply
Fast automatic input, be that transformer station restores electricity.The backup circuit breaker being in hot stand-by duty of stand-by power supply is commonly referred to as opened
, only there is open loop point, just enable prepared auto restart in circling point.Dual power supply statements based on collusion structure is common a kind of power supply in 110kV electrical network
Structure, powers to the middle statements based on collusion transformer station that several are cascaded by two power stations, during in order to suppress Electromagnetic coupling
Short circuit current, using open loop operation mode, that is, open one of statements based on collusion switch, after open loop operation, short circuit current is really permissible
Reduce, transformer station becomes and powered by single power station but each is acted in collusion to make each other's confessions, and power supply reliability reduces, in this case need to install
Backup auto-activating device, using another power station as stand-by power supply, improves power supply reliability by automatic switching.
If using conventional prepared auto restart, because only one of which transformer station has open loop point, other transformer stations are not
There is open loop point, due to not having the switch of stand-by power supply can control, conventional prepared auto restart cannot for the transformer station that there is not open loop point
Play a role, so lead to except open loop point place transformer station, the conventional backup auto-activating device of installing nor work even if other are respectively stood
Make, do not reach the purpose that fast recovery of power supply improves power supply reliability.For general remote automatic bus transfer equipment, only enable two
Prepared auto restart between individual transformer station, and the main electrical scheme for common multiple transformer stations statements based on collusion then cannot be suitable for.For being embedded in
Region backup power automatic switching function in EMS system, because data transfer time delay is big, the time of the needs that lead to restore electricity is partially long.Also have
People proposed the region prepared auto restart strategy recovering step by step, the switch at tripping all dead electricity station when statements based on collusion transformer station's dead electricity, then by
Level is closed a floodgate and is restored electricity, and passes through after accelerated protection tripping again, the switching manipulation number of times that this mode is related to after He Zhong Library
Many, the time of the needs that restore electricity is also longer, also can have certain impact during He Zhong Library to system.Above-mentioned method is not
Can rapidly and accurately restore electricity for dead electricity transformer station.
Content of the invention
The purpose of the present invention, be to provide a kind of there is backup auto-activating device and the spare power automatic switching method that function is hauled oneself willingly in region, its
It is applied to dual power supply statements based on collusion structure, can achieve that arbitrary statements based on collusion switch can be thought as passing through breaker tripping and closing operation during open loop point
Dead electricity statements based on collusion transformer station fast recovery of power supply.
In order to reach above-mentioned purpose, the solution of the present invention is：
A kind of have the backup auto-activating device that function is hauled oneself willingly in region, the electric power system of structure of acting in collusion to make each other's confessions for dual power supply, described double
Power supply statements based on collusion structure includes two power stations and at least two statements based on collusion transformer stations；Described backup auto-activating device includes region prepared auto restart dress
Put and several collections and performance element, backup auto-activating device configuration in described region is in any one power station or statements based on collusion transformer station, number
Individual collection and performance element are separately positioned on two power stations and transformer station of respectively acting in collusion to make each other's confessions, and all collections and performance element are respectively
Real time information is interacted with region backup auto-activating device by Networks of Fiber Communications；Described each collection and performance element gather its corresponding station
Analog quantity information, after being converted to on-off model pass through Networks of Fiber Communications on deliver to region backup auto-activating device, receive simultaneously
Breaker tripping and closing order that described region backup auto-activating device issues simultaneously executes breaker tripping and closing action.
Above-mentioned power station adopts transformer station, bus or interconnection power supply.
The corresponding collection in above-mentioned each station and performance element access the busbar voltage at this station, and the bus according to setting has pressure definite value
No press definite value with bus, being converted into bus has pressure mark and bus no to press sign switch amount signal；Access two statements based on collusion inlet wires
Electric current, according to the inlet wire fault current definite value setting and inlet wire no flow setpoint, is converted into the faulty current signature of inlet wire and inlet wire
No fail to be sold at auction will on-off model, and combine busbar voltage, calculate the angle of voltage and current, obtain sense of current mark；Adopt
The trip position contact of two statements based on collusion switches of collection, for the differentiation of system operation mode；Position after the conjunction of two statements based on collusion switches of collection
Put contact, locking prepared auto restart when jumping working power for handss；The actuating signal of collection bus differential protection, for identifying bus-bar fault；
Above-mentioned each flag bit and each switching value are passed through to deliver to region backup auto-activating device on Networks of Fiber Communications by collection and performance element,
Integrated decision-making is carried out by region backup auto-activating device.
A kind of based on having the spare power automatic switching method that the backup auto-activating device of function is hauled oneself willingly in region as previously mentioned, walk including following
Suddenly：
（1）Region prepared auto restart adopts discharge and recharge logic, and when system is normally run, a certain statements based on collusion switch as open loop point, its
Remaining statements based on collusion switch all closes a floodgate and runs, and each substation bus bar voltage all has pressure, and charged setting time rear region prepared auto restart puts charging
Complete, put charge flag；
（2）After the prepared auto restart charging complete of region, if the faulty generation of system, or power station decompression, then region prepared auto restart
Device selects to be suitable for the statements based on collusion switch of isolated fault according to failure condition；
（3）Through time delay of tripping, send the statements based on collusion switch of the aforementioned selection of order tripping, trip signal passes through Networks of Fiber Communications
It is issued to collection and the performance element execution trip operation of corresponding transformer station, after confirming statements based on collusion switch tripping, send out through combined floodgate time delay
Go out to run jointly circling point statements based on collusion switch command, close a floodgate order by Networks of Fiber Communications be issued to open loop point place transformer station collection and
Performance element carries out actual combined floodgate.
After such scheme, the invention has the beneficial effects as follows：The open loop point position of self adaptation dual power supply statements based on collusion structure, appoints
When one statements based on collusion switch is as open loop point, region backup auto-activating device can automatic identification；Automatically can be selected according to system running state
Select suitable statements based on collusion switch trip with isolated fault, prevent He Zhong Library；The state of comprehensive each transformer station carries out decision-making, permissible
Restore electricity for the statements based on collusion transformer station of multiple dead electricity simultaneously simultaneously, and be not limited to the transformer station that there is open loop point；Prepared auto restart moves
Only need to breaker tripping and closing operation as process, succinctly accurately；No matter the number of statements based on collusion transformer station is how many, this region backup auto-activating device
All can be suitable for；Real time information is transmitted by Networks of Fiber Communications, the region prepared auto restart of multiple transformer stations is covered in real realization.
Brief description
Fig. 1 is the electric power system main electrical scheme schematic diagram that the present invention is applied；
Fig. 2 is the logic chart of region of the present invention prepared auto restart；
Fig. 3 is the schematic diagram of region of the present invention prepared auto restart action situation.
Specific embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
Present invention offer is a kind of to have the power supply that backup auto-activating device structure it is adaptable to dual power supply is acted in collusion to make each other's confessions of function is hauled oneself willingly in region
System, with reference to shown in Fig. 1.Power station 1, power station 2 are two power stations, and A station, B station, C stand as 3 statements based on collusion transformer stations, 001-
008 is each statements based on collusion switch, and wherein 005 is the open loop point under the current method of operation.The scale of the statements based on collusion structure shown in this figure is only
A kind of citing, when the number of act in collusion to make each other's confessions transformer station and statements based on collusion switch increases or decreases, the present invention is still applicable.Double electricity of this in figure
Source is power station 1, power station 2 in form, and for the dual power supply of other forms, I mother of for example same transformer station, II mother stock are other
As two power supplys, or one of power supply is interconnection power supply, or all interconnection power supplys of two power supplys, the present invention
Still applicable.
Each transformer station（Comprise power station and statements based on collusion transformer station）It is respectively configured a collection and performance element, select wherein
One transformer station configures a region backup auto-activating device, and region backup auto-activating device passes through fiber optic communication with each collection and performance element
Network interaction real time information.Every collection and the analog quantity that need to access of performance element have：The busbar voltage of our station, 2 act in collusion to make each other's confessions into
The electric current of line；The switching value that need to access has：Position after the trip position of 2 statements based on collusion switches, conjunction, bus bar differential prptection operation signal, closes
Lock region prepared auto restart open into etc..The analog quantity collecting is converted into switching value mark by collection and performance element, according to set
Bus has pressure definite value, bus no to press definite value, and busbar voltage is converted into bus has pressure mark, bus no to press mark；According to setting
Inlet wire fault current definite value, inlet wire no flow setpoint, inlet wire current is converted into the faulty current signature of inlet wire, inlet wire is no failed to be sold at auction
Will；Using busbar voltage, inlet wire current, calculate the angle of voltage and current, obtain sense of current mark.Gather and execute list
Above-mentioned various flag bits and each switching value are passed through to deliver to region backup auto-activating device on Networks of Fiber Communications by unit, standby certainly by region
Throw device and carry out integrated decision-making.
The time delay of Networks of Fiber Communications transmission information can reach the level less than 1 millisecond, and gather and performance element lead to
Cross criterion on the spot and each analog quantity is converted to switching value, only interact switching value information number with region backup auto-activating device, so can be big
The big length reducing transmitting message, is conducive to the quick transmission of information, in this case, can reach wanting of real time interaction information
Ask.By interaction real time information, region backup auto-activating device can reach and common backup auto-activating device identical movement time on the spot
Precision, the actual act time can reach Millisecond level, region prepared auto restart movement time adjust can according to commonly standby from
Throw equal setting principle to consider.In this case, the equity cooperation with common prepared auto restart can also be realized, for example, according to height
Pressure side prepared auto restart has precedence over the rule of low-pressure side prepared auto restart action, if this set region prepared auto restart is installed on 110kV voltage etc.
Level, region prepared auto restart can be adjusted according to preferential action movement time；The prepared auto restart of below 110kV electric pressure movement time can
Adjusting is movement time more than region prepared auto restart, and can be using identical whole when coordinating with ordinary high pressure side prepared auto restart
Determine principle.
The action logic of region backup auto-activating device is with reference to as shown in Fig. 2 mainly there are several steps as follows：
Step 1：Discharge and recharge logic.Region backup auto-activating device adopts discharge and recharge logic, only after charging complete, just can carry out
Prepared auto restart operates.When meeting all of charge condition, and not having any discharging condition to meet, fill after charged setting time
Electricity completes, and puts Charging Flag.
Charge condition is the relation of "AND", needs to meet all charge conditions simultaneously, has charged after charged setting time
Become.Charge condition has：
1）The equal three-phase of two power stations has pressure；
2）The equal three-phase of each statements based on collusion transformer station has pressure；
3）, in open position, other statements based on collusion switches are all in closing position, and all switches all do not have for a certain statements based on collusion switch
Malposition is reported to the police.
Discharging condition is the relation of "or", and meeting any one discharging condition will discharge, and removes Charging Flag.Electric discharge bar
Part has：
1）Open loop point switch closes；
2）Region prepared auto restart sends combined floodgate order through short time delay；
3）Arbitrary operation statements based on collusion switch is jumped in distant jump, handss（After running the conjunction of statements based on collusion switch, position KKJ is changed into 0）；
4）The bus of two power stations is all no pressed, and no presses discharge lag through stand-by power supply；
5）After region prepared auto restart sends trip signal, switch failure of acting in collusion to make each other's confessions accordingly；
6）The statements based on collusion position of the switch being chosen as pre-trip switch is abnormal；
7）Can not receive the collection of arbitrary transformer station and the information of execution substation；
8）There is the outside locking input of blocked region prepared auto restart in arbitrary transformer station；
9）Receive the collection of a certain transformer station and the communication abnormality information of execution substation, this substation can not receive region prepared auto restart
The information of device, if open loop point place transformer station, then blocked region prepared auto restart, if not open loop point place transformer station does not then close
Lock；
10）Region backup auto-activating device action is crossed after needing manual confirmation and could be charged again；
11）Open loop point place substation bus fault, or open loop point offside station bus-bar fault；
12）Open loop point place line fault；
13）All break down in open loop point both sides；
14）Exit region backup power automatic switching function.
Step 2：Fault Identification and the selection of trip switch.After charging complete, if the faulty generation of system, relay protection
The statements based on collusion that device action tripping conjunction position is run switch, or power station decompression leads to transformer station's dead electricity of acting in collusion to make each other's confessions, then region is standby certainly
Throw device and enter fault location logic, select to be suitable for the statements based on collusion switch of isolated fault, prevent Backup Power Switch combined floodgate mistiming
Together in fault.
Step 3：In positioning failure and after choosing trip switch, through time delay of tripping, send the string of order tripping selection
For switch, the collection of tripping operation statements based on collusion switch place transformer station and performance element carry out actual trip operation, confirm that statements based on collusion switch is jumped
After opening, send through combined floodgate time delay and run circling point statements based on collusion switch command jointly, the collection of open loop point place transformer station and performance element are carried out
Actual closing operation, is operated by breaker tripping and closing, you can the statements based on collusion transformer station being embodied as dead electricity restores electricity.
According to the electric power system shown in Fig. 1, and consider that C station bus hangs with small power supply, when system switchs as open loop point with 005
During operation it is considered under various abort situation region prepared auto restart action situation, reference by location Fig. 3 of trouble point.
After the prepared auto restart charging complete of region：
1）There is K1 point failure, region prepared auto restart tripping 002 switch isolation fault in A-wire, close 005 switch afterwards, is A
Stand, B station restores electricity.
2）There is K2 point failure, region prepared auto restart tripping 004 switch isolation fault in A station bus, close 005 switch afterwards,
Restore electricity for B station.
3）There is K3 point failure, region prepared auto restart tripping 004 switch isolation fault in second line, close 005 switch afterwards, is B
Station restores electricity.
4）There is K4 point failure in B station bus, region prepared auto restart discharges, and prevents He Zhong Library.
5）There is K5 point failure in C-wire, region prepared auto restart discharges, and prevents He Zhong Library.
6）There is K6 point failure in C station bus, region prepared auto restart discharges, and prevents He Zhong Library.
7）There is K7 point failure, region prepared auto restart tripping 007 switch isolation fault in fourth line, close 005 switch afterwards, is C
Station restores electricity.
8）Power station 1 decompression, region prepared auto restart tripping 002 switchs, and close 005 switch afterwards, is A station, the recovery confession of B station
Electricity.
9）Power station 2 decompression, region prepared auto restart tripping 007 switchs, and close 005 switch afterwards, is that C station restores electricity.
Above example technological thought only to illustrate the invention is it is impossible to limit protection scope of the present invention with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within the scope of the present invention
Within.
Claims (3)
1. a kind of have the backup auto-activating device that function is hauled oneself willingly in region, the electric power system of structure of acting in collusion to make each other's confessions for dual power supply, described double electricity
Subject string includes two power stations and at least two statements based on collusion transformer stations for structure；It is characterized in that：Described backup auto-activating device includes area
Domain backup auto-activating device and several collection and performance element, described region backup auto-activating device configures in any one power station or statements based on collusion
Transformer station, several collections and performance element are separately positioned on two power stations and transformer station of respectively acting in collusion to make each other's confessions, and all gather and hold
Row unit interacts real time information by Networks of Fiber Communications with region backup auto-activating device respectively；Described each collection and performance element are adopted
Collect the analog quantity information at its corresponding station, pass through after being converted to on-off model region prepared auto restart dress is delivered on Networks of Fiber Communications
Put, receive the breaker tripping and closing order that described region backup auto-activating device issues simultaneously and execute breaker tripping and closing action；
The corresponding collection in described each station and performance element access the busbar voltage at this station, and the bus according to setting has pressure definite value and mother
Line no presses definite value, and being converted into bus has pressure mark and bus no to press sign switch amount signal；Access the electric current of two statements based on collusion inlet wires,
According to the inlet wire fault current definite value setting and inlet wire no flow setpoint, it is converted into the faulty current signature of inlet wire and inlet wire is no failed to be sold at auction
Will on-off model, and combine busbar voltage, calculate the angle of voltage and current, obtain sense of current mark；Collection two
The trip position contact of statements based on collusion switch, for the differentiation of system operation mode；Position contact after the conjunction of two statements based on collusion switches of collection,
Locking prepared auto restart when jumping working power for handss；The actuating signal of collection bus differential protection, for identifying bus-bar fault；Gather and hold
Above-mentioned each flag bit and each switching value are passed through to deliver to region backup auto-activating device on Networks of Fiber Communications by row unit, standby by region
Automatic bus carry out integrated decision-making.
2. as claimed in claim 1 a kind of have region haul oneself willingly into function backup auto-activating device it is characterised in that：Described power station
Using transformer station, bus or interconnection power supply.
3. a kind of based on having the spare power automatic switching method that the backup auto-activating device of function is hauled oneself willingly in region as claimed in claim 1, it is special
Levy and be to comprise the steps：
(1) region prepared auto restart adopts discharge and recharge logic, and when system is normally run, as open loop point, remaining goes here and there a certain statements based on collusion switch
All close a floodgate for switch and run, each substation bus bar voltage all has pressure, and charged setting time rear region prepared auto restart puts charging complete,
Put charge flag；
(2) after the charging complete of region prepared auto restart, if the faulty generation of system, or power station decompression, then region backup auto-activating device
Select to be suitable for the statements based on collusion switch of isolated fault according to failure condition；
(3) through time delay of tripping, send the statements based on collusion switch of the aforementioned selection of order tripping, trip signal is issued by Networks of Fiber Communications
Execute trip operation to the collection of corresponding transformer station and performance element, after confirming statements based on collusion switch tripping, send conjunction through combined floodgate time delay
Open loop point statements based on collusion switch command, order of closing a floodgate is issued to collection and the execution of open loop point place transformer station by Networks of Fiber Communications
Unit carries out actual combined floodgate.
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| CN201310445365.0A CN104518564B (en) | 2013-09-26 | 2013-09-26 | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method |
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| CN201310445365.0A CN104518564B (en) | 2013-09-26 | 2013-09-26 | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method |
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| CN104518564B true CN104518564B (en) | 2017-02-22 |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207346B (en) * | 2015-09-10 | 2018-01-30 | 广东电网有限责任公司珠海供电局 | Region spare power automatic switching method and system |
| CN106655462B (en) * | 2015-10-29 | 2023-03-28 | 贵州电网公司兴义供电局 | Double-master-station regional spare power automatic switching method |
| CN106208351B (en) * | 2016-08-12 | 2018-06-08 | 广州供电局有限公司 | Region spare power automatic switching system connection cuts the method and system of small power supply |
| CN106385011B (en) * | 2016-09-26 | 2019-02-15 | 中国电力工程顾问集团中南电力设计院有限公司 | A kind of fault coverage identification device of Intelligent region spare power automatic switching system and recognition methods |
| CN107370235B (en) * | 2017-07-07 | 2019-08-16 | 国电南瑞科技股份有限公司 | Based on the adaptive region spare power automatic switching system and method under composite power supply mode |
| CN107834690B (en) * | 2017-10-20 | 2020-09-01 | 中国石油化工集团公司 | Linkage method and linkage system for upper and lower rapid switching devices |
| CN108181500B (en) * | 2017-12-28 | 2020-02-14 | 中国南方电网有限责任公司超高压输电公司南宁局 | Method for determining non-pressure fixed value of switching-on of power transmission and transformation equipment |
| CN108599095B (en) * | 2018-06-22 | 2023-07-11 | 深圳供电局有限公司 | Safety device integrating bus-tie spare power automatic switching and main transformer spare power automatic switching functions |
| CN108899901A (en) * | 2018-08-03 | 2018-11-27 | 深圳供电局有限公司 | 10kV bus spare power automatic switching starting method and system |
| CN109245101B (en) * | 2018-11-13 | 2022-03-11 | 国网四川省电力公司天府新区供电公司 | Method for improving power supply reliability of series-supply transformer substation |
| US20220166214A1 (en) * | 2019-03-29 | 2022-05-26 | Siemens Aktiengesellschaft | Electric grid and method for operating an electric grid |
| CN109842204B (en) * | 2019-04-11 | 2021-06-29 | 国网江苏省电力有限公司镇江供电分公司 | Method for controlling standby power supply to be switched on at power supply side of hot standby circuit based on optical fiber channel |
| CN110601350B (en) * | 2019-09-23 | 2024-06-25 | 云南电网有限责任公司曲靖供电局 | High-voltage self-adaptive regional automatic switching system and automatic switching control method thereof |
| CN110571808B (en) * | 2019-10-25 | 2021-09-14 | 广东电网有限责任公司 | Remote spare power automatic switching line association setting verification method and spare power automatic switching device |
| CN111682508A (en) * | 2020-04-10 | 2020-09-18 | 南京智汇电力技术有限公司 | Differential protection and rapid self-healing method suitable for regional power distribution network |
| CN111864704A (en) * | 2020-05-18 | 2020-10-30 | 贵州电网有限责任公司 | Incoming line spare power automatic switching near backup protection method and system |
| CN113964930B (en) * | 2021-11-08 | 2023-06-27 | 国网湖南省电力有限公司 | Automatic cooperative control method and system for standby power supply of series power supply transformer substation |
| CN114374204A (en) * | 2022-01-12 | 2022-04-19 | 广东电网有限责任公司 | Serial supply spare power automatic switching equipment |
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