CN116404607A - Distribution network self-adaptive reclosing method based on distributed power characteristic signal injection - Google Patents
Distribution network self-adaptive reclosing method based on distributed power characteristic signal injection Download PDFInfo
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- CN116404607A CN116404607A CN202310455640.0A CN202310455640A CN116404607A CN 116404607 A CN116404607 A CN 116404607A CN 202310455640 A CN202310455640 A CN 202310455640A CN 116404607 A CN116404607 A CN 116404607A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 230000009471 action Effects 0.000 claims abstract description 8
- 230000016507 interphase Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 101150055297 SET1 gene Proteins 0.000 claims description 3
- 101150117538 Set2 gene Proteins 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- 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
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a distribution network self-adaptive reclosing method based on distributed power characteristic signal injection. The method comprises the following steps: after the line fails, the protection device acts to trip the power side switch adjacent to the failure point, and the distributed power of the failed line is off-line; injecting characteristic signals into the distributed power supply; the distributed power supply identifies whether a fault exists based on the unbalance degree of the inter-phase impedance of the characteristic signal, and when the fault exists, the duration of the output characteristic signal of the distributed power supply is set as T 1 The method comprises the steps of carrying out a first treatment on the surface of the When the fault does not exist, the duration of the output characteristic signal of the distributed power supply is set to be T 2 The method comprises the steps of carrying out a first treatment on the surface of the The protection device detects the characteristic signal and when the reclosing operation is satisfiedAnd when the condition is made, overlapping the jumped line switch. The invention can realize accurate judgment of fault property, improve the popularization rate and action accuracy of reclosing of the cable line and the mixed line, avoid secondary impact caused by overlapping faults and effectively improve the power supply reliability.
Description
Technical Field
The invention relates to the technical field of relay protection, in particular to a distribution network self-adaptive reclosing method based on distributed power characteristic signal injection.
Background
Along with the promotion of the construction of novel power system and the photovoltaic construction of whole county, a large amount of distributed power sources are connected into the power distribution network, a large amount of flexible and controllable converter equipment is brought to the power distribution network system, huge influence is generated on power distribution network relay protection, and a new thought is brought to the power distribution network relay protection from traditional 'passive' to 'active' fault detection.
At present, an overhead line in a power distribution network inputs a reclosing function, when an instantaneous fault occurs, the line reclosing action can restore the power supply of the system, however, when a permanent fault occurs, the reclosing can cause impact on electric equipment; for the cable line, reclosing is not generally input, and the line is deactivated even if transient faults occur in consideration of a relatively large number of permanent faults, so that a user power failure occurs in the load transfer process. Therefore, the reclosing of the power distribution network line needs to be managed in a refined mode, whether the fault is an instantaneous fault or a permanent fault is accurately identified, and whether the reclosing is needed or not is judged according to the fault type.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a distribution network self-adaptive reclosing method based on distributed power characteristic signal injection.
The technical scheme adopted by the invention for achieving the purpose is as follows: a distribution network self-adaptive reclosing method based on distributed power characteristic signal injection comprises the following steps:
after the line fails, the protection device acts to trip the power side switch adjacent to the failure point, and the distributed power of the failed line is off-line;
injecting characteristic signals into the distributed power supply;
the distributed power supply identifies whether a fault exists based on the unbalance degree of the inter-phase impedance of the characteristic signal, and when the fault exists, the duration of the output characteristic signal of the distributed power supply is set as T 1 The method comprises the steps of carrying out a first treatment on the surface of the When the fault does not exist, the duration of the output characteristic signal of the distributed power supply is set to be T 2 ；
The protection device detects the characteristic signal, and when the reclosing action condition is met, the line switch which is tripped is overlapped.
The characteristic signal adopts a three-phase higher harmonic voltage signal, and the amplitude value of the characteristic signal is (2% -5%) U n Wherein U is n Is rated voltage.
The distributed power supply injection characteristic signal adopts a quick starting method: when the distributed power supply is off-line, the grid-connected circuit breaker is not disconnected, only the control pulse is blocked, the power frequency power output is stopped, and the time delay T is carried out n And then outputting the characteristic signal.
And after the characteristic signals are injected into the distributed power supply, tripping the grid-connected circuit breaker.
The distributed power supply injects characteristic signals specifically as follows:
and selecting a single distributed power supply to start the characteristic signal injection, and not injecting the characteristic signals by other distributed power supplies.
The distributed power supply identifies whether a fault exists based on unbalance of characteristic signal interphase impedance, and specifically comprises the following steps:
wherein Z is ab 、Z bc 、Z ca For characteristic signal phase-to-phase impedance, k set Is an unbalanced threshold;
and when the formulas (1), (2) and (3) are all satisfied, judging that the fault does not exist, otherwise, judging that the fault exists.
The k is set Taking 0.1.
The T is 1 The value is 20 ms-50 ms.
The T is 2 The value is 100 ms-200 ms.
The reclosing action conditions are as follows:
the characteristic signal is larger than the minimum detection threshold U set1 And the duration reaches T 2 The method comprises the steps of carrying out a first treatment on the surface of the Meanwhile, the power frequency voltage is smaller than the non-voltage threshold U set2 。
The invention has the following advantages and beneficial effects:
after the circuit fault protection device trips, the distributed power supply injects characteristic signals of different time scales based on the fault survival condition, and the protection device detects the characteristic signals and coincides with the circuit after the fault disappears so as to realize power supply recovery. The reclosing device can effectively improve the popularity and the action accuracy of reclosing, avoid secondary impact caused by reclosing faults and improve the power supply reliability.
Drawings
FIG. 1 is a diagram of an application system architecture of the method of the present invention;
fig. 2 is a flow chart of a method of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The distribution network self-adaptive reclosing method based on the distributed power characteristic signal injection can effectively improve the power supply reliability of the distribution network. The workflow will be described by taking the system architecture diagram of fig. 1 as an example.
1) The injection start-up delays of the distributed power supplies 1, 2, 3 are set to 1s, 2s and 3s, respectively.
2) After the line fails at point F, the protection device P1 operates to trip the power supply side switch a adjacent to the failure point.
3) The distributed power supplies 1, 2, 3 of the faulty line are off-line.
4) After the network is disconnected, the distributed power supply 1 detects no characteristic signal on the system, and after 1s delay, the characteristic signal is started to be injected; the distributed power supplies 2, 3 detect the presence of a characteristic signal on the system and are not started again.
The method comprises the steps of selecting a single distributed power supply to start injection characteristic signals, and selecting other distributed power supplies to not inject characteristic signals, wherein the specific steps are as follows:
for overhead lines, each partition selects one distributed power supply as an injection source; for a cable line, selecting a distributed power supply as an injection source for each section of bus;
injection start time delay T of different distributed power supplies on same loop n Different, different T n The step difference delta T between the distributed power supplies is larger than the off-grid time difference between different distributed power supplies, and T n Longer than the fault arc-extinguishing time;
and detecting the characteristic signals on the system by the distributed power supply, when any phase has the characteristic signals, the distributed power supply does not start injection any more, and the distributed power supply which has been started to be injected originally continues to be injected.
5) The distributed power supply identifies whether a fault exists based on the unbalance degree of the inter-phase impedance of the characteristic signal, and when the fault exists, the duration of the output characteristic signal of the distributed power supply is set as T 1 The method comprises the steps of carrying out a first treatment on the surface of the When the fault does not exist, the duration of the output characteristic signal of the distributed power supply is set to be T 2 。
Interphase impedance Z of distributed power supply based on characteristic signals ab 、Z bc 、Z ca Is used to identify if a fault exists. The calculation formula is as follows:
and when the formulas (1), (2) and (3) are all satisfied, judging that the fault does not exist, otherwise judging that the fault exists. Wherein is k set For an unbalanced threshold, 0.1 is typically taken.
If the fault is a permanent fault, the duration of the characteristic signal detected by the protection device is T 1 At this time, the reclosure is closed.
T 1 The setting of the protection device should take the fault tolerance degree of the inverter and the reliable detection of the protection device into consideration, and the value is 20 ms-50 ms. T (T) 2 Is set up to take into account T 1 The obvious difference of the characteristic signal and the influence of the characteristic signal on the load are 100 ms-200 ms.
6) The protection device detects the characteristic signal, and when the following reclosing action conditions are met, the reclosing line switch is overlapped and tripped:
(1) the characteristic signal is larger than the minimum detection threshold U set1 And the duration reaches T 2 ；
(2) The power frequency voltage is smaller than the non-pressure threshold U set2 。
Wherein, the characteristic signal adopts three-phase higher harmonic voltage signals, and the amplitude is generally (2% -5%) U n ，U n For rated voltage, 57.735V is taken in this example.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (10)
1. The distribution network self-adaptive reclosing method based on distributed power characteristic signal injection is characterized by comprising the following steps of:
after the line fails, the protection device acts to trip the power side switch adjacent to the failure point, and the distributed power of the failed line is off-line;
injecting characteristic signals into the distributed power supply;
the distributed power supply identifies whether a fault exists based on the unbalance degree of the inter-phase impedance of the characteristic signal, and when the fault exists, the duration of the output characteristic signal of the distributed power supply is set as T 1 The method comprises the steps of carrying out a first treatment on the surface of the When the fault does not exist, the duration of the output characteristic signal of the distributed power supply is set to be T 2 ；
The protection device detects the characteristic signal, and when the reclosing action condition is met, the line switch which is tripped is overlapped.
2. The self-adaptive reclosing method for the power distribution network based on the injection of the characteristic signals of the distributed power supply according to claim 1, wherein the characteristic signals adopt three-phase higher harmonic voltage signals, and the amplitude is (2% -5%) U n Wherein U is n Is rated voltage.
3. The self-adaptive reclosing method for a power distribution network based on distributed power characteristic signal injection according to claim 1, wherein the distributed power characteristic signal injection adopts a quick start method: when the distributed power supply is off-line, the grid-connected circuit breaker is not disconnected, only the control pulse is blocked, the power frequency power output is stopped, and the time delay T is carried out n And then outputting the characteristic signal.
4. The self-adaptive reclosing method for a power distribution network based on the injection of the characteristic signals of the distributed power supply according to claim 3, wherein the grid-connected circuit breaker is tripped after the characteristic signals are injected into the distributed power supply.
5. The self-adaptive reclosing method for a power distribution network based on distributed power characteristic signal injection according to claim 3, wherein the distributed power characteristic signal injection specifically comprises:
and selecting a single distributed power supply to start the characteristic signal injection, and not injecting the characteristic signals by other distributed power supplies.
6. The self-adaptive reclosing method of a power distribution network based on the injection of characteristic signals of a distributed power supply according to claim 1, wherein the identification of whether a fault exists or not by the distributed power supply based on the unbalance degree of the inter-phase impedance of the characteristic signals is specifically as follows:
wherein Z is ab 、Z bc 、Z ca For characteristic signal phase-to-phase impedance, k set Is an unbalanced threshold;
and when the formulas (1), (2) and (3) are all satisfied, judging that the fault does not exist, otherwise, judging that the fault exists.
7. The method for adaptive reclosing of a power distribution network based on distributed power characteristic signal injection according to claim 6, wherein k is set Taking 0.1.
8. The distribution network self-adaptive reclosing method based on distributed power characteristic signal injection according to claim 1, wherein the T is 1 The value is 20 ms-50 ms.
9. The distribution network self-adaptive reclosing method based on distributed power characteristic signal injection as claimed in claim 1, wherein the method is characterized in thatCharacterized in that the T 2 The value is 100 ms-200 ms.
10. The distribution network self-adaptive reclosing method based on distributed power characteristic signal injection according to claim 1, wherein the reclosing action condition is as follows:
the characteristic signal is larger than the minimum detection threshold U set1 And the duration reaches T 2 The method comprises the steps of carrying out a first treatment on the surface of the Meanwhile, the power frequency voltage is smaller than the non-voltage threshold U set2 。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154708A (en) * | 2023-08-31 | 2023-12-01 | 南京国电南自电网自动化有限公司 | Characteristic signal injection method and equipment suitable for active detection type protection |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080069021A (en) * | 2007-01-22 | 2008-07-25 | 성균관대학교산학협력단 | An adaptive reclosing technique considering the distributed generation |
| CN101867171A (en) * | 2010-06-28 | 2010-10-20 | 中国南方电网有限责任公司电网技术研究中心 | Distributed generator islanding detection method based on impedance measurement |
| CN103928919A (en) * | 2014-05-05 | 2014-07-16 | 重庆大学 | Calculation curved surface method for determining short circuit current when distribution type generators are connected to power grid |
| CN103983899A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Power distribution network permanent fault identification method based on injected signal |
| CN208028561U (en) * | 2018-02-05 | 2018-10-30 | 国网河南省电力公司新乡供电公司 | A kind of distribution line Intelligent recloser device |
| CN110768221A (en) * | 2019-10-22 | 2020-02-07 | 华中科技大学 | Adaptive reclosing method for overhead flexible direct-current power grid |
| US20220014021A1 (en) * | 2020-07-10 | 2022-01-13 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Nat | System and method for use with microgrids having inverter-based distributed generators |
| CN114563659A (en) * | 2022-03-01 | 2022-05-31 | 国网宁夏电力有限公司 | Injection signal-based three-phase short-circuit fault property identification method |
-
2023
- 2023-04-25 CN CN202310455640.0A patent/CN116404607A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080069021A (en) * | 2007-01-22 | 2008-07-25 | 성균관대학교산학협력단 | An adaptive reclosing technique considering the distributed generation |
| CN101867171A (en) * | 2010-06-28 | 2010-10-20 | 中国南方电网有限责任公司电网技术研究中心 | Distributed generator islanding detection method based on impedance measurement |
| CN103928919A (en) * | 2014-05-05 | 2014-07-16 | 重庆大学 | Calculation curved surface method for determining short circuit current when distribution type generators are connected to power grid |
| CN103983899A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Power distribution network permanent fault identification method based on injected signal |
| CN208028561U (en) * | 2018-02-05 | 2018-10-30 | 国网河南省电力公司新乡供电公司 | A kind of distribution line Intelligent recloser device |
| CN110768221A (en) * | 2019-10-22 | 2020-02-07 | 华中科技大学 | Adaptive reclosing method for overhead flexible direct-current power grid |
| US20220014021A1 (en) * | 2020-07-10 | 2022-01-13 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Nat | System and method for use with microgrids having inverter-based distributed generators |
| CN114563659A (en) * | 2022-03-01 | 2022-05-31 | 国网宁夏电力有限公司 | Injection signal-based three-phase short-circuit fault property identification method |
Non-Patent Citations (1)
| Title |
|---|
| 陈海东 等: "利用分布式电源注入信号的配电线路故障性质识别技术", 《高压电器》, vol. 58, no. 12, 16 December 2022 (2022-12-16), pages 123 - 128 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154708A (en) * | 2023-08-31 | 2023-12-01 | 南京国电南自电网自动化有限公司 | Characteristic signal injection method and equipment suitable for active detection type protection |
| CN117154708B (en) * | 2023-08-31 | 2024-08-02 | 南京国电南自电网自动化有限公司 | Characteristic signal injection method and equipment suitable for active detection type protection |
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