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Self-adaptive local feeder automation fault handling method based on area serial number

A fault handling method and feeder automation technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as inability to flexibly respond to distribution network topology changes, multi-connection operation mode adjustments, etc., and achieve the principle of simple serial number assignment and reduce Restricting conditions and reducing the effect of configuration complexity

Active Publication Date: 2020-02-21
NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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Problems solved by technology

[0005] The invention proposes an adaptive on-site feeder automation fault processing method based on the area serial number, which solves the problem that the existing on-site coincident feeder automation cannot flexibly respond to distribution network topology changes, multi-connection operation mode adjustment, and high-impedance grounding Troubleshooting and other technical issues

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  • Self-adaptive local feeder automation fault handling method based on area serial number
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  • Self-adaptive local feeder automation fault handling method based on area serial number

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0037] The present invention proposes an adaptive local feeder automatic fault handling method based on the area serial number, which includes the following steps:

[0038] Step SS1: Delineation of the area range; delineate the circuit breaker at the outlet of the substation to the tie switch and the end of the line as a logical area;

[0039] Step SS2: Logical serial number allocation, the segmental switches in each logical area independently allocate serial numbers;

[0040] Step SS3: the switch sets a unified parameter value;

[0041] Step SS4: self-adaptive adjustment of operating parameters;

[0042] Step SS5: fault isolation;

[0043] Step SS6: restore power to the non-faulty area.

[0...

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Abstract

The invention discloses an adaptive local type feeder automation fault processing method based on the area serial number, which comprises the following steps: the area range is delimited; The circuitbreaker at the outlet of the substation is connected to the contact switch, and the end of the line is delimited as a logic area; A logical sequence numb is allocated, and that segment switch in eachlogical region independently allocates the sequence number; Switch is provided with unified parameter; Adaptive adjustment of operating parameters is preformed; fault isolation is performed; restore power to non-faulty areas is performed. after the method of the invention is applied, when the distribution network is affected by the changes of the network topology such as the newly added branch lines and the adjustment of the multi-connection operation modes, the original tuning parameters are not considered to be changed, and the automation system can be adaptively operated. At the same time,when the terminal algorithm can not identify the fault due to the large grounding transition resistance, the method can cooperate with the centralized grounding line selection trip or manual trip in the substation to complete the isolation and recovery operation of the high-resistance grounding fault.

Description

technical field [0001] The invention relates to an adaptive local feeder automation fault processing method based on area serial numbers, and belongs to the technical field of power system distribution automation. Background technique [0002] As an important part of distribution automation system, feeder automation plays an important role in quickly handling distribution network faults, improving power supply reliability, and shortening repair time. Feeder automation can be divided into centralized type and local type. Among them, the local type reclosing type feeder automation has the working characteristics of "delayed closing when power is on, and opening when power is off". Each section switch cooperates with the protection of the substation exit circuit breaker. The fault location is determined by orderly opening and closing, and the functions of fault isolation and power restoration in non-faulty areas are completed. The processing process does not depend on the main ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/28
CPCH02H7/28
Inventor 李兆拓金松茂张华陈云国高志勇
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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