CN110601156A - Master station centralized self-healing locking method based on remote sensing abnormity of distribution network terminal - Google Patents
Master station centralized self-healing locking method based on remote sensing abnormity of distribution network terminal Download PDFInfo
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- CN110601156A CN110601156A CN201910848451.3A CN201910848451A CN110601156A CN 110601156 A CN110601156 A CN 110601156A CN 201910848451 A CN201910848451 A CN 201910848451A CN 110601156 A CN110601156 A CN 110601156A
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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
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a main station centralized self-healing blocking method based on distribution network terminal telemetering abnormity, which monitors relevant operation information of a self-healing feeder group, including a remote signaling state of a switch, operation alarm information of a distribution automation main station, listing information and the like, and sets a controllable switch of the whole self-healing feeder group to be in a blocking state when the key operation information is detected. When the self-healing feeder group is locked, the information of the whole feeder group is monitored in an open loop mode, the fault is located, and no remote control command is issued to the feeder group, so that the accuracy of the distribution network self-healing result is improved.
Description
Technical Field
The invention relates to the field of power system control strategies, in particular to a master station centralized self-healing locking method based on distribution network terminal telemetering abnormity.
Background
Self-healing is an important characteristic of the intelligent power distribution network and an important mark for establishing the intelligent power distribution network. The self-healing of the power distribution network refers to the self-prevention and self-recovery capacity of the power distribution network, and the capacity is derived from the detection and effective control strategy of important parameters of the power distribution network. Whether the self-healing can be successful or not directly influences the power supply reliability of the power grid, and the self-healing success rate also marks the practical level of regional distribution automation.
After the distribution network fails, the centralized self-healing processing idea of the main station is that the main station system performs comprehensive judgment according to fault warning information detected by the power distribution terminal and by combining protection action signals of a transformer substation and a switching station, switch separating and other related information, starts a fault processing program, determines fault types and areas, and realizes fault area isolation and non-fault area power supply recovery. At present, in the self-healing process, the rapid isolation of a fault area is mainly realized by remotely controlling a boundary switch of a fault line. However, in actual operation, there are cases where it is necessary to perform power supply transfer, operation mode adjustment, short-time loop closing operation, and the like by using a local manual operation switch or a remote operation switch. If the load capacity and the sensibility of the line are larger, the closing/opening switch is operated, the conditions of local overvoltage, overcurrent and the like of the line can be caused, the protective device sends overvoltage and overcurrent protective action signals, and meanwhile, because the manual closing/opening switch can send switch position change signals upwards, a centralized self-healing program of a main station is very easy to cause that the manual operation is judged as the line fault, and the self-healing misoperation is caused. Such false actions cause equipment damage if the false actions are light, and cause personal risks if the false actions are heavy, so that automatic locking conditions must be set to enable the main station to perform centralized self-healing automatic locking, and when the operation is completed, automatic unlocking can be realized, and the monitoring and control functions of the centralized self-healing program of the main station on the feeder line are restored.
Disclosure of Invention
The invention provides a main station centralized self-healing locking method based on distribution network terminal telemetering abnormity, which can improve the accuracy of distribution network self-healing results.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a master station centralized self-healing locking method based on distribution network terminal telemetering anomaly comprises the following steps:
s1: determining a self-healing locking switch set corresponding to a self-healing scheme of a distribution network line;
s2: establishing a distribution network self-healing locking measurement management center;
s3: starting cycle detection of a distribution network self-healing locking measurement management center;
s4: and starting fault isolation in the distribution network self-healing process.
Further, the specific process of step S1 is:
and for each line in the power distribution network, searching a corresponding boundary switch when the line is in fault, and adding the boundary switch into the self-healing locking switch set to establish the self-healing locking switch set.
Further, a corresponding measurement monitor is established for each switch in the set, each boundary switch corresponds to two measurement monitors, a link is established between each measurement monitor and the corresponding boundary switch, and signal interaction between the two is realized through the link.
Further, in step S3, the locking measurement management center periodically updates the telemetering collected value of each measurement monitor, determines whether the telemetering collected value is within a reasonable value range, and if the telemetering value is not within the reasonable value range, sends a locking signal to the self-healing locking switch linked thereto, where a locking flag of the locking switch is set to TRUE, and if the telemetering value is recovered to normal, sends an unlocking signal to the self-healing locking switch linked thereto, and where the locking flag of the locking switch is set to FALSE.
Further, in the step S4, in the self-healing process, fault isolation is realized by remotely controlling the boundary switch, the latching state of the boundary switch is checked first, and if the latching flag is FALSE, the switch is remotely controlled directly; and if the locking mark is TRUE, continuously searching the outer layer switch until the switch with the locking mark of FALSE is searched, using the switch as a boundary switch, executing remote control operation, and realizing quick isolation of the fault area, thereby improving the accuracy of the distribution network self-healing result.
Further, the metrology monitor monitoring data comprises: the method comprises the steps of collecting data fields of monitoring types, monitoring values and normal value ranges, enabling each boundary switch to correspond to two measuring monitors, enabling the monitoring types of the measuring monitors to be switch voltage and switch current values respectively, then establishing a link between each measuring monitor and the corresponding boundary switch, and achieving signal interaction between the two measuring monitors and the corresponding boundary switch through the link.
The method firstly searches primary equipment such as an outgoing line switch, a line, a disconnecting link, a trolley, a switch, a bus and the like on each 10kV feeder line in a corresponding self-healing feeder line group, judges whether the primary equipment has a listing and whether the category of the listing is a listing sign of 'maintenance', 'line maintenance', 'fault', 'grounding fault', 'power supply conversion', 'debugging', 'live working', 'reclosing quit', 'protection fault', 'mechanism fault' and 'operation prohibition', and then whether a disconnecting link, a trolley and a switch on the line are set or not is detected, whether a feeder line automatic switch on a substation outgoing line switch, a main line and a contact point is turned to a local operation position or not is detected, whether a reclosing lock feeding and withdrawing pressure plate for line protection or a remote feeding and withdrawing reclosing pressure plate for remote line protection is changed or not is judged, and whether the condition that manual operation exists on the feeder line is judged by combining the conditions. If the situation exists on the line, the self-healing action function of the feeder line group needs to be locked when the line is judged to be operated or operated by a person, a remote control operation command is not issued to any remote control switch on the feeder line group, the locking of the self-healing action of the main station is realized, the risk that the main station starts the self-healing of the main station by mistake when the line fails due to manual operation is prevented, and therefore the accuracy of the distribution network self-healing result is improved.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention monitors the relevant operation information of the self-healing feeder group, including the remote signaling state of the switch, the operation alarm information of the distribution automation main station, the listing information and the like, and sets the controllable switch of the whole self-healing feeder group to be in a locking state when the key operation information is detected. When the self-healing feeder group is locked, the information of the whole feeder group is monitored in an open loop mode, the fault is located, and no remote control command is issued to the feeder group, so that the accuracy of the distribution network self-healing result is improved.
Drawings
FIG. 1 is a schematic diagram of fault self-healing of a power distribution network;
FIG. 2 is a diagram of the link between the lock metric monitor and the self-healing lock switch.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
A master station centralized self-healing locking method based on distribution network terminal telemetering anomaly comprises the following steps:
s1: determining a self-healing locking switch set corresponding to a self-healing scheme of a distribution network line;
s2: establishing a distribution network self-healing locking measurement management center;
s3: starting cycle detection of a distribution network self-healing locking measurement management center;
s4: and starting fault isolation in the distribution network self-healing process.
The specific process of step S1 is:
and for each line in the power distribution network, searching a corresponding boundary switch when the line is in fault, and adding the boundary switch into the self-healing locking switch set to establish the self-healing locking switch set.
And establishing a corresponding measurement monitor for each switch in the set, wherein each boundary switch corresponds to two measurement monitors, establishing a link between each measurement monitor and the corresponding boundary switch, and realizing signal interaction between the two measurement monitors and the corresponding boundary switch through the link.
In step S3, the locking measurement management center periodically updates the telemetering collected value of each measurement monitor, determines whether the telemetering collected value is within a reasonable value range, and if the telemetering value is not within the reasonable value range, sends a locking signal to the self-healing locking switch linked thereto, and sets the locking flag of the locking switch to TRUE, and if the telemetering value is recovered to normal, sends an unlocking signal to the self-healing locking switch linked thereto, and sets the locking flag of the locking switch to FALSE.
In the step S4, in the self-healing process, fault isolation is realized by remotely controlling the boundary switch, the locking state of the boundary switch is firstly checked, and if the locking mark is FALSE, the switch is directly remotely controlled; and if the locking mark is TRUE, continuously searching the outer layer switch until the switch with the locking mark of FALSE is searched, using the switch as a boundary switch, executing remote control operation, and realizing quick isolation of the fault area, thereby improving the accuracy of the distribution network self-healing result.
Metrology monitor monitoring data includes: the method comprises the steps of collecting data fields of monitoring types, monitoring values and normal value ranges, enabling each boundary switch to correspond to two measuring monitors, enabling the monitoring types of the measuring monitors to be switch voltage and switch current values respectively, then establishing a link between each measuring monitor and the corresponding boundary switch, and achieving signal interaction between the two measuring monitors and the corresponding boundary switch through the link.
Example 2
In the implementation, the method of the invention is utilized to search primary equipment such as an outgoing line switch, a line, a disconnecting link, a trolley, a switch, a bus and the like on each 10kV feeder line in the corresponding self-healing feeder group, judge whether the equipment has a tag, and judge whether the tag is of the types of 'overhaul', 'line overhaul', 'fault', 'grounding fault', 'power supply conversion', 'debugging', 'live working', 'reclosing quit', 'protection fault', 'mechanism fault' and 'operation prohibition', and then whether a disconnecting link, a trolley and a switch on the line are set or not is detected, whether a feeder line automatic switch on a substation outgoing line switch, a main line and a contact point is turned to a local operation position or not is detected, whether a reclosing lock feeding and withdrawing pressure plate for line protection or a remote feeding and withdrawing reclosing pressure plate for remote line protection is changed or not is judged, and whether the condition that manual operation exists on the feeder line is judged by combining the conditions. If the situation exists on the line, the self-healing action function of the feeder line group needs to be locked when the line is judged to be operated or operated by a person, a remote control operation command is not issued to any remote control switch on the feeder line group, the locking of the self-healing action of the main station is realized, the risk that the main station starts the self-healing of the main station by mistake when the line fails due to manual operation is prevented, and therefore the accuracy of the distribution network self-healing result is improved.
The specific process is as follows:
a) determining self-healing lockout switch sets
As shown in fig. 1, the boundary switches of the line L1 are D15 and D16, the boundary switches of the line L2 are D17 and D18, the boundary switches of the line L3 are D19 and D20, and the boundary switches of the line L4 are D21 and D22, so that the self-healing blocking switch set S is { D15, D16, D17, D18, D19, D20, D21, and D22 }.
b) Establishing a lock measurement management center
And establishing a locking measurement management center U, and establishing a measurement monitor by the U according to the self-healing locking switch set S generated in the first step. Taking D15 and D16 as examples:
the switch D15 in S establishes the latch metrology monitors U1 and U2 and establishes links between U1, U2 and D15.
The switch D16 in S establishes the latch metrology monitors U3 and U4 and establishes links between U3, U4 and D16.
The latch-up metrology monitors U1, U2, U3, U4 are shown in tables 1, 2, 3 and 4, and the linking relationship between the latch-up metrology monitor and the self-healing latch-up switch is shown in FIG. 2.
TABLE 1 switch D15 measurement monitor U1
| Type of monitoring | Electric current |
| Monitoring value | Switch D15 current remote measurement value acquired by terminal |
| Range of normal value | [0，600] |
TABLE 2 switch D15 measurement monitor U2
| Type of monitoring | Voltage of |
| Monitoring value | Switch D15 voltage remote measurement value acquired by terminal |
| Range of normal value | [0，0.5]，[9.5,11] |
TABLE 3 switch D16 measurement monitor U3
| Type of monitoring | Electric current |
| Monitoring value | Switch D16 current remote measurement value acquired by terminal |
| Range of normal value | [0，600] |
TABLE 4 switch D16 measurement monitor U4
| Type of monitoring | Voltage of |
| Monitoring value | Switch D16 voltage remote measurement value acquired by terminal |
| Range of normal value | [0，0.5]，[9.5,11] |
c) Lock measurement management center startup cycle detection
And the locking measurement management center U periodically updates the telemetering collection values of the locking measurement monitors U1, U2, U3 and U4 to judge whether the telemetering collection values are within a reasonable value range. If the telemetering value of the U1 is not in a reasonable range, a locking signal is sent to a self-healing locking switch D15 linked with the U1, and after the D15 receives the locking signal, a locking mark of the self-healing locking switch is set to TRUE; if the telemetry value of the U1 returns to normal, the U1 sends an unlocking signal to the D15, and after the D15 receives the unlocking signal, the locking mark of the D1 is set to FALSE.
d) Self-healing process start-up fault isolation
Assuming a fault occurs in line L2, the blocking status of each switch in the self-healing blocking switch set is shown in table 5.
TABLE 5 self-healing lockout switch lockout status
| Self-healing locking switch | Locking sign |
| D15 | FALSE |
| D16 | TRUE |
| D17 | TRUE |
| D18 | FALSE |
| D19 | FALSE |
| D20 | FALSE |
| D21 | FALSE |
| D22 | FALSE |
After the self-healing process of the line L2 is started, the boundary switches D17 and D18 are remotely controlled to realize quick fault isolation. When the boundary switch D17 is remotely controlled, the locking mark is TRUE, so the outer layer switch is continuously searched until the non-locking state switch D15 is searched, and the remote control operation is executed by taking D15 as the boundary switch; when the boundary switch D18 is remotely controlled, the lock flag is FALSE, and the remote control operation is directly performed thereon.
Therefore, when the line L2 breaks down, although the switch D17 is unavailable in the self-healing process, the method still realizes the quick isolation of the fault area, does not cause the expansion of the fault and the increase of the power failure loss, thereby improving the accuracy of the self-healing action of the distribution network and ensuring the power supply reliability of the power grid.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A main station centralized self-healing locking method based on distribution network terminal telemetering anomaly is characterized by comprising the following steps:
s1: determining a self-healing locking switch set corresponding to a self-healing scheme of a distribution network line;
s2: establishing a distribution network self-healing locking measurement management center;
s3: starting cycle detection of a distribution network self-healing locking measurement management center;
s4: and starting fault isolation in the distribution network self-healing process.
2. The master station centralized self-healing locking method based on the telemetry abnormity of the distribution network terminal, according to claim 1, wherein the specific process of the step S1 is as follows:
and for each line in the power distribution network, searching a corresponding boundary switch when the line is in fault, and adding the boundary switch into the self-healing locking switch set to establish the self-healing locking switch set.
3. The master station centralized self-healing locking method based on the distribution network terminal telemetry abnormity according to claim 2, characterized in that a corresponding measurement monitor is established for each switch in the set, each boundary switch corresponds to two measurement monitors, a link is established between each measurement monitor and the corresponding boundary switch, and signal interaction between the two is realized through the link.
4. The master station centralized self-healing locking method based on the distribution network terminal telemetry abnormity according to claim 3, wherein in the step S3, the locking measurement management center periodically updates the telemetry acquisition value of each measurement monitor, determines whether the telemetry acquisition value is within a reasonable range, sends a locking signal to the self-healing locking switch linked thereto if the telemetry acquisition value is not within the reasonable range, sets the locking flag of the locking switch to TRUE, and sends an unlocking signal to the self-healing locking switch linked thereto if the telemetry acquisition value is recovered to normal, and sets the locking flag of the locking switch to FALSE.
5. The centralized self-healing locking method for the master station based on the telemetry abnormity of the distribution network terminals, according to the claim 4, in the step S4, during the self-healing process, fault isolation is realized by remotely controlling a boundary switch, the locking state of the boundary switch is firstly checked, and if the locking mark is FALSE, the switch is directly remotely controlled; and if the locking mark is TRUE, continuously searching the outer layer switch until the switch with the locking mark of FALSE is searched, using the switch as a boundary switch, executing remote control operation, and realizing quick isolation of the fault area, thereby improving the accuracy of the distribution network self-healing result.
6. The master station centralized self-healing lock-up method based on distribution network terminal telemetry abnormity according to claim 5, wherein the measurement monitor monitoring data comprises: the method comprises the steps of collecting data fields of monitoring types, monitoring values and normal value ranges, enabling each boundary switch to correspond to two measuring monitors, enabling the monitoring types of the measuring monitors to be switch voltage and switch current values respectively, then establishing a link between each measuring monitor and the corresponding boundary switch, and achieving signal interaction between the two measuring monitors and the corresponding boundary switch through the link.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208382A (en) * | 2020-04-23 | 2020-05-29 | 广州思泰信息技术有限公司 | Electric power self-healing test method, device, system, main station and tester |
| CN111952929A (en) * | 2020-08-13 | 2020-11-17 | 广东电网有限责任公司 | Self-healing false switching-on judgment method and device for distribution network feeder automation terminal |
| CN113595246A (en) * | 2021-07-30 | 2021-11-02 | 广东电网有限责任公司 | Microgrid state online monitoring method and device, computer equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160359333A1 (en) * | 2015-06-05 | 2016-12-08 | I Shou University | Power distribution system capable of automatic fault detection in a distributed manner and method thereof |
| CN109245072A (en) * | 2018-09-17 | 2019-01-18 | 南京国电南自电网自动化有限公司 | Adaptive type feeder automation fault handling method on the spot based on region serial number |
| CN110138625A (en) * | 2019-07-09 | 2019-08-16 | 广东电网有限责任公司佛山供电局 | A kind of distribution main website self-healing method based on electric topology connection relationship |
-
2019
- 2019-09-09 CN CN201910848451.3A patent/CN110601156B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160359333A1 (en) * | 2015-06-05 | 2016-12-08 | I Shou University | Power distribution system capable of automatic fault detection in a distributed manner and method thereof |
| CN109245072A (en) * | 2018-09-17 | 2019-01-18 | 南京国电南自电网自动化有限公司 | Adaptive type feeder automation fault handling method on the spot based on region serial number |
| CN110138625A (en) * | 2019-07-09 | 2019-08-16 | 广东电网有限责任公司佛山供电局 | A kind of distribution main website self-healing method based on electric topology connection relationship |
Non-Patent Citations (1)
| Title |
|---|
| 杨福 等: "基于配电自动化的配电网自愈的研究与应用", 《电气应用》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208382A (en) * | 2020-04-23 | 2020-05-29 | 广州思泰信息技术有限公司 | Electric power self-healing test method, device, system, main station and tester |
| CN111208382B (en) * | 2020-04-23 | 2020-08-11 | 广州思泰信息技术有限公司 | Electric power self-healing test method, device, system, main station and tester |
| CN111952929A (en) * | 2020-08-13 | 2020-11-17 | 广东电网有限责任公司 | Self-healing false switching-on judgment method and device for distribution network feeder automation terminal |
| CN111952929B (en) * | 2020-08-13 | 2022-08-16 | 广东电网有限责任公司 | Self-healing false switching-on judgment method and device for distribution network feeder automation terminal |
| CN113595246A (en) * | 2021-07-30 | 2021-11-02 | 广东电网有限责任公司 | Microgrid state online monitoring method and device, computer equipment and storage medium |
| CN113595246B (en) * | 2021-07-30 | 2023-06-23 | 广东电网有限责任公司 | Micro-grid state online monitoring method and device, computer equipment and storage medium |
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