Analysis method of electromagnetic loop closing and power reversing operation of urban distribution network

An analysis method and electrical operation technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve problems such as error-prone, numerous basic data, and large influence

CN101860026BActive Publication Date: 2013-03-06北京中恒博瑞数字电力科技有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-03-06

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Abstract

The invention discloses an analysis method of the electromagnetic loop closing and power reversing operation of an urban distribution network, which comprises the following steps of: (1) selecting a loop closing switch; (2) selecting the source of calculation data; if the calculation data is from off-line data, executing the step (3); and if the calculation data is from real-time data, executing the step (4); (3) acquiring the off-line data from an off-line data base; (4) acquiring the real-time data from a real-time data base; (5) processing the real-time data; (6) generating a calculation model; (7) carrying out load flow calculation before loop closing; (8) calculating impact current at a loop closing point; (9) carrying out load flow calculation for loop closing; (10) obtaining a fixed protection value; (11) safety checking; (12) judging whether the loop closing operation is safe or not, if safe, executing the step (14), otherwise, executing the step (13); (13) generating a loop closing strategy if the loop closing operation is not safe; (14) generating a loop closing operation report; and (15) ending.
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Description

technical field

[0001] The invention relates to electric power system automation, in particular to an analysis method for an electromagnetic loop closing operation of an urban distribution network. Background technique

[0002] Most of the power-down operations of the urban distribution network during normal maintenance and accident handling follow the "cold down" method (that is, short-term power outages for users), which results in negative impacts of user dissatisfaction and complaints, as well as deep contradictions between power outages and power supply tasks. Deeply surrounded by power supply companies. In China, there are few analyzes on the operation of the electromagnetic closing loop of the urban distribution network. Strict rules and regulations are usually used to standardize every link of the electromagnetic closing operation of the urban distribution network, such as calculation, nuclear phase, process, statistics, etc.

[0003] However, due to the rapid chang...

Examples

Embodiment Construction

[0015] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0016] The flow chart of the analysis method for the operation of electromagnetic loop closure in urban distribution network is as follows: figure 1 shown. The analysis method for the operation of the electromagnetic loop closure of the urban distribution network includes the following steps: (1) select the loop closure switch; (2) select the calculation data source, if the data source is offline data, then perform step (3), if the data source For real-time data, step (4) is performed; (3) obtain offline data from the offline database; (4) obtain real-time data from the real-time data source; (5) analyze and process the real-time data; (6) according to the calculated data, Generate calculation model; (7) Perform power flow calculation before loop closure; (8) Calculate loop closure point impulse current according to p...