CN106300339A - A kind of Fault Isolation based on unit style power distribution network and service restoration method - Google Patents
A kind of Fault Isolation based on unit style power distribution network and service restoration method Download PDFInfo
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- CN106300339A CN106300339A CN201610747768.4A CN201610747768A CN106300339A CN 106300339 A CN106300339 A CN 106300339A CN 201610747768 A CN201610747768 A CN 201610747768A CN 106300339 A CN106300339 A CN 106300339A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of Fault Isolation based on unit style power distribution network and service restoration method, comprise the following steps: (1) traversal power load table and supply load table, it is judged that power load is the most equal with supply load, equal, terminates；Unequal turn to (2)；(2) traversal bus and switch list, by location overcurrent protective switch, detection interconnection switch state simultaneously；(3) traversal supply path table, it may be judged whether have supply path, do not turn to (5)；Turn to (4)；(4) judge that power supply capacity, whether more than or equal to power load, is more than or equal to turn to (7)；Less than turning to (5)；(5) traversal stand-by power supply routing table, it may be judged whether have stand-by power supply path, turn to (6), be not over；(6) judge that stand-by power supply capacity, whether more than or equal to power load, is more than or equal to turn to (7)；Less than then terminating；(7) restore electricity.Amount of calculation of the present invention is few, it is fast to analyze speed.
Description
Technical field
The present invention relates to a kind of distribution network failure isolation and service restoration method, be specifically related to a kind of based on unit style distribution
The Fault Isolation of net and service restoration method, belong to technical field of power systems.
Background technology
It will division of the power supply area be several power distribution network unit minimums as power distribution network operational management that unit style is powered
Logical block, is divided into multiple power supply zone by unit style planning by power distribution network, based on power distribution network As-Is Assessment is analyzed,
According to the Planning Standard of power supply area differentiation, determine objective net support structure of medium-voltage distribution network Connection Mode, each power supply being divided of science
Zoning is divided into some power supply logics unit, using power logical block as medium-Voltage Distribution network planning, project management, user access,
Run the ultimate unit controlled, meet distribution network construction, the highly reliable operation demand of user's access.
The troubleshooting pattern of distribution automation mainly has following several at present:
(1) fault handling method of multi-objective optimization algorithm based on unit feeder pattern, uses genetic algorithm, fuzzy pushes away
The methods such as reason, specialist system, TABU search, artificial neural network, integer programming, rough set solve the fault in units of feeder line
Isolate and optimize the problem that restores electricity, domestic with Hohai University, Shanghai Communications University, Sichuan University, Wuhan University, North China electricity
The achievement in research of power university, Xi'an Communications University, University On The Mountain Of Swallows etc. is the most typical.
(2) power distribution network relay protection and distributed intelligence distribution network failure treatment technology aspect, mainly includes that Toshiba of Japan is public
The automatic circuit of department and voltage-time type sectionaliser fitting method, automatic circuit and the fitting method that overlaps, the section of Cooper company of the U.S.
Sharp company propose " face protection " technology in units of feeder line, professor Liu Jian proposition combined floodgate quick-break fitting method and based on
The fast failure location of GOOSE net and partition method, Shanghai Communications University, University Of Chongqing's proposition distance protection is applied to containing
In the power distribution network of distributed power source, University Of Tianjin propose the protection scheme containing distributed power source power distribution network based on wide area network, in
Electric Power Research Institute of state proposes power distribution network self-adaptive current fast tripping protection scheme after wind energy turbine set accesses；Zhejiang University proposes profit
Coordinate distributed power generation by the method for reactor current limliting and restriction access capacity and distribution protection, Dalian University of Technology propose
Guard method etc. based on detection boundaries on either side special frequency channel transient current energy.
(3) distribution network failure information gathering with method is positioned manually, stress to take economical and practical method (as installed fault
Indicator etc.) gather fault message, with good conditionsi also fault message is reached central monitoring position, by artificial judgment abort situation, as
Shanghai Communications University proposes to install fault probe detection phase fault signal on branch line, and divides by being arranged on circuit
Surveillance center is passed in wireless receiving and dispatching substation at Zhi；The low pressure that Laiwu Power Supply Company, Yi Gete Power Electronics Co., Ltd. propose
The distribution line fault monitoring system etc. that distribution network fault positioning device, Jiangsu Winet Electric Incorporated Co., Ltd. propose.
Unit style is powered the framework power supply point for each power supply unit, it is desirable at least from two different transformer stations or
The bus section, busbar section that same transformer station is different, the load of each transformer station should be kept in balance as far as possible, it is to avoid heavy duty or underloading main transformer occurs,
And at present both at home and abroad the control strategy of power distribution network is basically applied to " hand in hand " single rack, traditional control strategy without
Method meets the requirement of unit style construction for electricity.
Summary of the invention
The deficiency existed for prior art, it is an object of the present invention to provide that a kind of amount of calculation is few, analyze fireballing based on
The Fault Isolation of unit style power distribution network and service restoration method.
To achieve these goals, the present invention is to realize by the following technical solutions:
A kind of Fault Isolation based on unit style power distribution network and service restoration method, including following step:
Step (1) traversal power load table and supply load table, it is judged that power load is the most equal with supply load, if
Power load is equal with supply load, then terminate；If power load is unequal with supply load, then turn to step (2)；
Step (2) traversal bus and switch list, by location overcurrent protective switch, detection interconnection switch state simultaneously, use
In fault point isolated fault point；
Step (3) traversal supply path table, it may be judged whether have supply path, without supply path, then turn to step
(5)；If there being supply path, then turn to step (4)；
Step (4) judges whether power supply capacity is more than or equal to power load, if power supply capacity is more than or equal to power load,
Then turn to step (7)；If power supply capacity is less than power load, then turn to step (5)；
Step (5) traversal stand-by power supply routing table, it may be judged whether have stand-by power supply path, if there being stand-by power supply path,
Then turn to step (6), if it is not, terminate；
Step (6) judges whether stand-by power supply capacity is more than or equal to power load, if stand-by power supply capacity is more than or equal to
Power load, then turn to step (7)；If stand-by power supply capacity is less than power load, then terminate；
Step (7) restores electricity, and then terminates.
By step (3)-(6), the opening and closing state of interconnection switch and busbar sectional izing switch is switched over and changes network
Topology, to realize transfer load between feeder line or transformer station, thus affects the trend distribution in network, is finally reached network weight
Structure and the purpose of the optimization network operation.In step (2) dependence distribution system, the switching between various switches completes Fault Isolation
Target with recovery operation.
The Fault Isolation based on unit style power distribution network of the present invention and service restoration method can make system at distribution network
When breaking down, complete the reconstruct of distribution network and resume work, and initial power supply can be returned to when the failure clears
Running status.
Accompanying drawing explanation
Fig. 1 is a kind of based on unit style power distribution network Fault Isolation and the service restoration method workflow diagram of the present invention；
Fig. 2 is an actual unit style power distribution network power supply unit.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with
Detailed description of the invention, is expanded on further the present invention.
Seeing Fig. 1, a kind of based on unit style power distribution network the Fault Isolation of the present invention specifically includes with service restoration method
Following steps:
Step (1) traversal power load table and supply load table, it is judged that power load is the most equal with supply load, if
Power load is equal with supply load, then terminate；If power load is unequal with supply load, then turn to step (2)；
Step (2) traversal bus and switch list, by location overcurrent protective switch, detection interconnection switch state simultaneously, use
In fault point isolated fault point；
Step (3) traversal supply path table, it may be judged whether have supply path, without supply path, then turn to step
(5)；If there being supply path, then turn to step (4)；
Step (4) judges whether power supply capacity is more than or equal to power load, if power supply capacity is more than or equal to power load,
Then turn to step (7)；If power supply capacity is less than power load, then turn to step (5)；
Step (5) traversal stand-by power supply routing table, it may be judged whether have stand-by power supply path, if there being stand-by power supply path,
Then turn to step (6), if it is not, terminate；
Step (6) judges whether stand-by power supply capacity is more than or equal to power load, if stand-by power supply capacity is more than or equal to
Power load, then turn to step (7)；If stand-by power supply capacity is less than power load, then terminate；
Step (7) restores electricity, and then terminates.
Traverse ending can terminate.
First, the part noun or the term that occur during being described the embodiment of the present invention are applicable to solve as follows
Release:
SK, refers to that power switch, this switch are connected to transformer station, by transformer station's output power supply.
UK, refers to that subscriber switch, this switch are connected to user's lateral load or buckling.
LK, refers to that interconnection switch, this switch are connected to interconnection box between other switching station or switching station.
BK, refers to bus-tie circuit breaker, and this switch is at a certain switching station internal bus block switch.
Seeing Fig. 2, according to the inventive method, the contact between Heng Yu square switching station and east, Heng Yu square 1# switching station is opened
Close Lk1 to break down disconnections, the interconnection switch Lk2 also dead electricity of Lk1 opposite end, Lk2 the 1# switching station right side, east, Heng Yu square powered
The bus section, busbar section dead electricity of side.Bus section, busbar section on the right side of the 1# switching station of east, Heng Yu square is because of Fault Isolation.Then control unit is by searching
Stand-by power supply table obtains the power margin of the bus-tie circuit breaker BK1 on the left of the 1# switching station of east, Heng Yu square, and detection disclosure satisfy that later
The power load of the bus section, busbar section on the right side of the 1# switching station of east, Heng Yu square, the bus-tie circuit breaker BK1 of east, Heng Yu square 1# switching station closes a floodgate
Power supply, east, Heng Yu square 1# switching station recovers electricity consumption.
The communication of logic-based unit of the present invention, when feeder line a certain in system breaks down, can be carried out by communication contact
Fault location, coordinates separating brake by two end switch, by trouble point and isolation of system.Tied by the chained list of analytic unit distribution
Structure, travels through switch list, obtains switch current state, automatically carries out the meter of correlation table in conjunction with average load trend size and direction
Calculate, automatically update the change of each switch power, and carry out load transfer judgement according to power load table and stand-by power supply table, by meter
The power supply redundancy of Suan Ge supply line, supplies analysis result to carry out the switching switched according to turning, it is achieved power supply recovers automatically.
Every bus section, busbar section has a logical terminal (LTERM).By logical terminal (LTERM) mutual in system, system can be at distribution network
Complete the reconstruct of distribution network when breaking down and resume work, and initial power supply fortune can be returned to when the failure clears
Row state.
Network topology is changed, to realize by the opening and closing state of interconnection switch and busbar sectional izing switch is switched over
Transfer load between feeder line or transformer station, thus affect the trend distribution in network, it is finally reached network reconfiguration and optimizes net
The purpose that network runs.
The switching between various switches is relied in distribution system to complete the target of Fault Isolation and recovery operation.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (1)
1. a Fault Isolation based on unit style power distribution network and service restoration method, it is characterised in that include following step
Rapid:
Step (1) traversal power load table and supply load table, it is judged that power load is the most equal with supply load, if electricity consumption
Load is equal with supply load, then terminate；If power load is unequal with supply load, then turn to step (2)；
Step (2) traversal bus and switch list, by location overcurrent protective switch, detection interconnection switch state simultaneously, for fixed
Trouble point, position isolated fault point；
Step (3) traversal supply path table, it may be judged whether have supply path, without supply path, then turn to step (5)；
If there being supply path, then turn to step (4)；
Step (4) judges that power supply capacity, whether more than or equal to power load, if power supply capacity is more than or equal to power load, then turns
To step (7)；If power supply capacity is less than power load, then turn to step (5)；
Step (5) traversal stand-by power supply routing table, it may be judged whether having stand-by power supply path, if there being stand-by power supply path, then turning
To step (6), if it is not, terminate；
Step (6) judges whether stand-by power supply capacity is more than or equal to power load, if stand-by power supply capacity is more than or equal to electricity consumption
Load, then turn to step (7)；If stand-by power supply capacity is less than power load, then terminate；
Step (7) restores electricity, and then terminates.
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| CN201610747768.4A CN106300339B (en) | 2016-08-29 | 2016-08-29 | A kind of Fault Isolation based on unit style power distribution network and service restoration method |
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| CN201610747768.4A CN106300339B (en) | 2016-08-29 | 2016-08-29 | A kind of Fault Isolation based on unit style power distribution network and service restoration method |
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| CN106300339A true CN106300339A (en) | 2017-01-04 |
| CN106300339B CN106300339B (en) | 2018-08-14 |
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| CN108631298A (en) * | 2018-03-30 | 2018-10-09 | 国电南瑞科技股份有限公司 | A kind of unit style distribution network restoration strategy-generating method based on load balancing distribution |
| CN110460051A (en) * | 2019-09-25 | 2019-11-15 | 广东稳峰电力科技有限公司 | A kind of medium voltage distribution network contact method and system based on net capability |
| CN111313402A (en) * | 2020-02-24 | 2020-06-19 | 国网浙江省电力有限公司湖州供电公司 | N-1 transfer method and system for power distribution network |
| CN116093940A (en) * | 2023-04-10 | 2023-05-09 | 广东电网有限责任公司佛山供电局 | Distribution network line interconnection switch distribution point selection method, distribution network line interconnection switch distribution point selection device and storage medium |
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| CN116093940A (en) * | 2023-04-10 | 2023-05-09 | 广东电网有限责任公司佛山供电局 | Distribution network line interconnection switch distribution point selection method, distribution network line interconnection switch distribution point selection device and storage medium |
| CN116093940B (en) * | 2023-04-10 | 2023-06-02 | 广东电网有限责任公司佛山供电局 | Distribution network line interconnection switch distribution point selection method, distribution network line interconnection switch distribution point selection device and storage medium |
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| CN106300339B (en) | 2018-08-14 |
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Address after: 210061 No. 20 Gaoxin Road, Nanjing High-tech Zone, Jiangsu Province Patentee after: NARI TECHNOLOGY Co.,Ltd. Patentee after: NARI NANJING CONTROL SYSTEM Co.,Ltd. Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. SUZHOU BRANCH Patentee after: ZHEJIANG HARNPU POWER TECHNOLOGY Co.,Ltd. Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 210061 No. 20 Gaoxin Road, Nanjing High-tech Zone, Jiangsu Province Patentee before: NARI TECHNOLOGY Co.,Ltd. Patentee before: NARI NANJING CONTROL SYSTEM Co.,Ltd. Patentee before: SUZHOU POWER SUPPLY COMPANY OF STATE GRID JIANGSU ELECTRIC POWER Co. Patentee before: ZHEJIANG HARNPU POWER TECHNOLOGY Co.,Ltd. Patentee before: STATE GRID JIANGSU ELECTRIC POWER Co. Patentee before: State Grid Corporation of China |
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Effective date of registration: 20201228 Address after: 210061 No. 20 Gaoxin Road, Nanjing High-tech Zone, Jiangsu Province Patentee after: NARI TECHNOLOGY Co.,Ltd. Patentee after: NARI NANJING CONTROL SYSTEM Co.,Ltd. Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. SUZHOU BRANCH Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 210061 No. 20 Gaoxin Road, Nanjing High-tech Zone, Jiangsu Province Patentee before: NARI TECHNOLOGY Co.,Ltd. Patentee before: NARI NANJING CONTROL SYSTEM Co.,Ltd. Patentee before: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. SUZHOU BRANCH Patentee before: ZHEJIANG HARNPU POWER TECHNOLOGY Co.,Ltd. Patentee before: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Patentee before: STATE GRID CORPORATION OF CHINA |