CN107732910A - A kind of method of fast recovery of power supply - Google Patents
A kind of method of fast recovery of power supply Download PDFInfo
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- CN107732910A CN107732910A CN201711173016.2A CN201711173016A CN107732910A CN 107732910 A CN107732910 A CN 107732910A CN 201711173016 A CN201711173016 A CN 201711173016A CN 107732910 A CN107732910 A CN 107732910A
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- supply
- path
- electric grid
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 9
- 238000013178 mathematical model Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013075 data extraction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H02J3/005—
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention discloses a kind of method of fast recovery of power supply, by the power recovery method for setting consideration condition, using simple and reliable simplification tide model, so that partial electric grid on structure is met, it is relatively easy in operation in the case of, the screening of restoration path is realized using less data and the equation simplified, improves and turns for the swiftness of process.Method includes：Judge power-off before partial electric grid running status whether simultaneously satisfaction two conditions；Establish and turn to simplify tide model for Path selection set and power system；Obtain turning in real time for Path selection set and corresponding simplified trend and export turning of meeting to require and supply path；When have turn supply and demand and ask when, turn to carry out electric power for path and turn to supply according to output.
Description
Technical field
It is especially a kind of when faulty component operation of power networks structure is relatively simple the present invention relates to intelligent power grid technology field
In the case of the obvious method for shortening the time that restores electricity.
Background technology
Electric power system fault is due to the rugged environment factor such as heavy rain, heavy snow, strong wind and increasingly old electric power
The congestion etc. of equipment, communication port is inevitable.For uncontrollable electric power system fault, best counter-measure is exactly
Faulty component and bulk power grid can be departed from rapidly when a failure occurs it and use other parts to be powered for the load of faulty component,
Restored electricity by the way of excision-transfer.
The existing method to restore electricity needs the carry out such as the real-time topology result according to power system, loading condition real-time
Stability analysis, such as implement the Load flow calculation of complexity, fractograph analysis etc..Although these calculating accuracys rate are higher, mistake
Make it that real-time performance is weaker in cumbersome calculation and data extraction procedure.And weaker real-time reduces power supply reliably
Property simultaneously improves the possibility of the further failure of system.
The content of the invention
Therefore, in view of the above-mentioned problems, the invention provides a kind of method of fast recovery of power supply, the feelings of condition are being met
Under condition, the judgment mode that will not also reduce of relatively simple and accuracy rate is set so that can rapidly judge when breaking down
Go out to need the restoration approach taken, and then improve promptness and reliability that electric power turns to supply.
In order to achieve the above object, the present invention proposes a kind of method of fast recovery of power supply, comprises the following steps：
A. whether partial electric grid running status meets condition before judging power-off；
B. founding mathematical models；
C. mathematical modeling is solved；
D. when have turn supply and demand and ask when, turn to carry out electric power for path and turn to supply according to output.
The method of above-mentioned fast recovery of power supply, also meets condition：Step a includes：
Condition includes：
1. meet for all nodes in partial electric grid：
；N is partial electric grid interior joint sum,For part
Power network interior joint i voltage phase angle,For partial electric grid interior joint j voltage phase angle, j is the node adjacent with i；
2. voltage compensating device is provided with partial electric grid to cause the voltage magnitude of each node to fluctuate very little, so that can
The voltage magnitude perunit value for thinking each node is 1；
When the partial electric grid meets above-mentioned 2 conditions simultaneously, step b is performed；When the partial electric grid can not meet above-mentioned 2 bars
During part, terminate this method.
The method of above-mentioned fast recovery of power supply, also meets condition：Step b includes：
Set and turn to supply Path selection set S：
S={s1,s2... ..., sp, p is selective to turn to supply total number of paths, siRepresent and a kind of selective turn to supply path；
Establish power system and simplify tide model：
Wherein, PiFor the active power of node i,For the partial electric grid interior joint i of estimation voltage phase angle,For estimation
Partial electric grid interior joint j voltage phase angle, BijThe imaginary part of admittance between node i, j.
The method of above-mentioned fast recovery of power supply, also meets condition：Step c includes：
Obtain turning to supply Path selection set S in real time0, turn contributed for Path selection set by electric power monitoring system according to power supply,
Bearing power, circuit contact situation, capacity of trunk parameter, on off state determine, when power supply output, bearing power, circuit contact
One of situation, capacity of trunk parameter, on off state, which exist to recalculate when changing, turns original to replace for Path selection set
Turn for Path selection set so that turn being capable of real-time tracking power system concrete condition for Path selection set；
For turning to supply Path selection set S in real time0In it is each it is selective turn to supply path, using electric system simulation program
Solve and turn the simplification trend after supplying for path implementation according to this turn, i.e., turn the local electricity after supplying for path implementation according to according to this turn
The active power of all nodes in net, the voltage phase angle for setting voltage phase angle datum node are 0, are solved by simplifying tide model
The estimated voltage phase angle of other n-1 node in partial electric grid, judge the estimated voltage phase angle of this n-1 node whether pre-
If safe range in, if it is, exporting this turn supplies path.
The method of above-mentioned fast recovery of power supply, also meets condition：Step d includes：
When have turn supply and demand and ask when, turn to carry out electric power for path and turn to supply according to output；Turn supply and demand to ask including a certain bar of power system
There is permanent fault, a certain generator dead electricity in circuit；Permanent fault refers to still can not self-healing after reclosing twice
Failure.
The method of above-mentioned fast recovery of power supply, also meet that condition permanent fault includes wired foil ground short circuit；Weight
Combined floodgate includes single-pole reclosing and three_phase reclosing.
Power recovery method of the invention by setting consideration condition, using simple and reliable simplification tide model so that
Partial electric grid on structure is met, it is relatively easy in operation in the case of, using less data and the equation simplified come real
The screening of existing restoration path, improves and turns for the swiftness of process.
Brief description of the drawings
Fig. 1 is fast recovery of power supply method flow diagram.
Embodiment
Fig. 1 is referred to, a kind of method of fast recovery of power supply, is comprised the following steps：
A. whether partial electric grid running status meets condition before judging power-off；
Condition includes：
1. meet for all nodes in partial electric grid：
；N is partial electric grid interior joint sum,
For partial electric grid interior joint i voltage phase angle,For partial electric grid interior joint j voltage phase angle, j is the node adjacent with i；
2. voltage compensating device is provided with partial electric grid to cause the voltage magnitude of each node to fluctuate very little, so that can
The voltage magnitude perunit value for thinking each node is 1；
When the partial electric grid meets above-mentioned 2 conditions simultaneously, step b is performed；When the partial electric grid can not meet above-mentioned 2 bars
During part, terminate this method；
B. founding mathematical models：
Set and turn to supply Path selection set S：
S={s1,s2... ..., sp, p is selective to turn to supply total number of paths, siRepresent and a kind of selective turn to supply path；
Establish power system and simplify tide model：
Wherein, PiFor the active power of node i,For the partial electric grid interior joint i of estimation voltage phase angle,For estimation
Partial electric grid interior joint j voltage phase angle, BijThe imaginary part of admittance between node i, j；
C. mathematical modeling is solved：
Obtain turning to supply Path selection set S in real time0, turn contributed for Path selection set by electric power monitoring system according to power supply,
Bearing power, circuit contact situation, capacity of trunk parameter, on off state determine, when power supply output, bearing power, circuit contact
One of situation, capacity of trunk parameter, on off state, which exist to recalculate when changing, turns original to replace for Path selection set
Turn for Path selection set so that turn being capable of real-time tracking power system concrete condition for Path selection set；
For turning to supply Path selection set S in real time0In it is each it is selective turn to supply path, using electric system simulation program
Solve and turn the simplification trend after supplying for path implementation according to this turn, i.e., turn the local electricity after supplying for path implementation according to according to this turn
The active power of all nodes in net, the voltage phase angle for setting voltage phase angle datum node are 0, are solved by simplifying tide model
The estimated voltage phase angle of other n-1 node in partial electric grid, judge the estimated voltage phase angle of this n-1 node whether pre-
If safe range in, if it is, exporting this turn supplies path；
D. when have turn supply and demand and ask when, turn to carry out electric power for path and turn to supply according to output；Turn supply and demand and ask a certain including power system
There is permanent fault, a certain generator dead electricity in bar circuit；Permanent fault refers to still can not be certainly after reclosing twice
More failure.
Permanent fault includes wired foil ground short circuit；Reclosing includes single-pole reclosing and three_phase reclosing.
It should be noted that above content is that to combine specific embodiment made for the present invention further specifically
It is bright, it is impossible to assert that the embodiment of the present invention is only limitted to this, under the above-mentioned guidance of the present invention, those skilled in the art can
To carry out various improvement and deformation on the basis of above-described embodiment, and these are improved or deformation falls in protection model of the invention
In enclosing.
Claims (7)
1. a kind of method of fast recovery of power supply, comprises the following steps：
A. whether partial electric grid running status meets condition before judging power-off；
B. founding mathematical models；
C. mathematical modeling is solved；
D. when have turn supply and demand and ask when, turn to carry out electric power for path and turn to supply according to output.
2. the device of a kind of fast recovery of power supply according to claim 1, it is characterised in that step a includes：
Condition includes：
Meet for all nodes in partial electric grid：
；N is partial electric grid interior joint sum,For office
Portion power network interior joint i voltage phase angle,For partial electric grid interior joint j voltage phase angle, j is the node adjacent with i；
Voltage compensating device is provided with partial electric grid to cause the voltage magnitude of each node to fluctuate very little, so that can recognize
It is 1 for the voltage magnitude perunit value of each node；
When the partial electric grid meets above-mentioned 2 conditions simultaneously, step b is performed；When the partial electric grid can not meet above-mentioned 2 bars
During part, terminate this method.
3. the method for a kind of fast recovery of power supply according to claim 2, it is characterised in that step b includes：
Set and turn to supply Path selection set S：
S={s1,s2... ..., sp, p is selective to turn to supply total number of paths, siRepresent and a kind of selective turn to supply path；
Establish power system and simplify tide model：
Wherein, PiFor the active power of node i,For the partial electric grid interior joint i of estimation voltage phase angle,For estimation
Partial electric grid interior joint j voltage phase angle, BijThe imaginary part of admittance between node i, j.
4. the method for a kind of fast recovery of power supply according to claim 3, it is characterised in that step c includes：
Obtain turning to supply Path selection set S in real time0, turn to be contributed, born according to power supply by electric power monitoring system for Path selection set
Carry power, circuit contact situation, capacity of trunk parameter, on off state to determine, when power supply output, bearing power, circuit contact feelings
One of condition, capacity of trunk parameter, on off state, which exist to recalculate when changing, turns original to replace for Path selection set
Turn for Path selection set so that turn being capable of real-time tracking power system concrete condition for Path selection set；
For turning to supply Path selection set S in real time0In it is each it is selective turn to supply path, using electric system simulation program
Solve and turn the simplification trend after supplying for path implementation according to this turn, i.e., turn the local electricity after supplying for path implementation according to according to this turn
The active power of all nodes in net, the voltage phase angle for setting voltage phase angle datum node are 0, are solved by simplifying tide model
The estimated voltage phase angle of other n-1 node in partial electric grid, judge the estimated voltage phase angle of this n-1 node whether pre-
If safe range in, if it is, exporting this turn supplies path.
5. the method for a kind of fast recovery of power supply according to claim 4, it is characterised in that step d includes：
When have turn supply and demand and ask when, turn to carry out electric power for path and turn to supply according to output；Turn supply and demand to ask including a certain bar of power system
There is permanent fault, a certain generator dead electricity in circuit；Permanent fault refers to still can not self-healing after reclosing twice
Failure.
6. the method for a kind of fast recovery of power supply according to claim 5, it is characterised in that permanent fault includes circuit
Metallic earthing short circuit.
7. the method for a kind of fast recovery of power supply according to claim 6, it is characterised in that reclosing includes single-phase coincidence
Lock and three_phase reclosing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711173016.2A CN107732910B (en) | 2017-11-22 | 2017-11-22 | Method for rapidly recovering power supply |
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| CN201711173016.2A CN107732910B (en) | 2017-11-22 | 2017-11-22 | Method for rapidly recovering power supply |
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| CN107732910B CN107732910B (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111934316A (en) * | 2020-08-10 | 2020-11-13 | 国网安徽省电力有限公司黄山供电公司 | Method for selecting substation recovery path after power grid tripping |
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| CN103426033A (en) * | 2013-07-31 | 2013-12-04 | 国电南瑞科技股份有限公司 | Power distribution network fault recovery optimization rebuilding algorithm based on critical path method |
| US20150212534A1 (en) * | 2014-01-24 | 2015-07-30 | International Business Machines Corporation | Generating electric substation load transfer control parameters |
| CN106026085A (en) * | 2016-06-27 | 2016-10-12 | 中国南方电网有限责任公司 | Power distribution network closed-loop power supply transferring path optimum decision method |
| CN106374453A (en) * | 2016-09-05 | 2017-02-01 | 中国电力科学研究院 | Electric power system reconstruction method |
| CN107196307A (en) * | 2017-07-18 | 2017-09-22 | 西安交通大学 | A kind of method that electric network active trend is quickly estimated after transformer fault |
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2017
- 2017-11-22 CN CN201711173016.2A patent/CN107732910B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426033A (en) * | 2013-07-31 | 2013-12-04 | 国电南瑞科技股份有限公司 | Power distribution network fault recovery optimization rebuilding algorithm based on critical path method |
| US20150212534A1 (en) * | 2014-01-24 | 2015-07-30 | International Business Machines Corporation | Generating electric substation load transfer control parameters |
| CN106026085A (en) * | 2016-06-27 | 2016-10-12 | 中国南方电网有限责任公司 | Power distribution network closed-loop power supply transferring path optimum decision method |
| CN106374453A (en) * | 2016-09-05 | 2017-02-01 | 中国电力科学研究院 | Electric power system reconstruction method |
| CN107196307A (en) * | 2017-07-18 | 2017-09-22 | 西安交通大学 | A kind of method that electric network active trend is quickly estimated after transformer fault |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111934316A (en) * | 2020-08-10 | 2020-11-13 | 国网安徽省电力有限公司黄山供电公司 | Method for selecting substation recovery path after power grid tripping |
| CN111934316B (en) * | 2020-08-10 | 2024-03-12 | 国网安徽省电力有限公司黄山供电公司 | Method for selecting recovery path of transformer substation after tripping of power grid |
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Effective date of registration: 20201112 Address after: Room w901a, Taiwan Science and technology enterprise development center, Xiamen Torch High tech Zone (Xiang'an) Industrial Zone, Xiamen, Fujian Province Applicant after: XIAMEN GREATER ELECTRIC AUTOMATION Co.,Ltd. Address before: 251800 Yangxin County, Binzhou, Shandong Province, a happy road Applicant before: Yanhaiping |
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Denomination of invention: A method of quickly restoring power supply Effective date of registration: 20220713 Granted publication date: 20201204 Pledgee: Bank of China Limited by Share Ltd. Xiamen branch Pledgor: XIAMEN GREATER ELECTRIC AUTOMATION Co.,Ltd. Registration number: Y2022110000155 |