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Distribution line negative loss reason discrimination method

A technology of power distribution lines and discrimination methods, applied in the field of power grids, can solve problems such as difficulty in troubleshooting and slow governance of negative loss lines, and achieve the effect of improving the quality of basic data and improving governance efficiency.

Active Publication Date: 2020-08-28
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of difficult troubleshooting and slow treatment speed of 10kV distribution line negative loss line, in order to improve the efficiency of line abnormality treatment, and guide the power system operation and maintenance personnel to rectify and eliminate defects in a targeted manner. A Distinguishing Method for Causes of Negative Loss of Distribution Lines

Method used

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Embodiment Construction

[0033] Distribution line loss includes long-term continuous line loss, repeated line loss, and sudden line loss. The identification process of the cause of the loss is as follows: figure 1 , figure 2 with image 3 shown.

[0034] Now take a company's 35kV substation 10kV line as an example to further illustrate the present invention.

[0035] The 10kV crystal line of a 35kV Tiantang substation of a company in a certain city found a sudden negative loss on November 26, 2019. The daily line loss rate on November 26 was -106.26%. 6112.7kWh.

[0036] According to the method of the present invention, firstly, from the integrated electricity and line loss management system, the power supply and sales of the crystal line in the past 20 days are as shown in Table 1, and the configuration details of the power supply (the power at the gate of the line, the name and power supply of the distributed power supply) , The magnification of the distribution line gateway table is shown in T...

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Abstract

The invention discloses a distribution line negative loss reason discrimination method, and the method accurately discriminates a reason causing line negative loss through obtaining the multi-party information of line power supply and sale quantity, gateway multiplying power and distribution transformer electric quantity and combining with a corresponding analysis algorithm of long-term continuousnegative loss of a line, repeated negative loss of the line and sudden negative loss of the line. The attached drawing is a line sudden negative loss state reason discrimination process. In the distribution line negative loss reason discrimination method, the problems of difficult troubleshooting and low governance speed of the 10kV distribution line negative loss line reason can be solved to a certain extent, the line abnormality governance efficiency can be improved, the operation and maintenance personnel of the power system can be guided to perform targeted rectification and defect elimination, and the method has important significance for comprehensively improving the basic data quality and troubleshooting the system stock problem.

Description

technical field [0001] The invention relates to a method for discriminating the cause of negative loss of a power distribution line, which belongs to the technical field of power grids. Background technique [0002] At present, the power system adopts a "four-point" management method for distribution network losses, that is, it is calculated based on the four dimensions of line division, division, voltage division, and division area to accurately evaluate the loss in the process of power transmission. Today, 10kV distribution line division Line loss has gradually become one of the important indicators of distribution network operation and maintenance. However, due to the complexity of distribution network lines, inaccurate basic information and ledgers, and frequent failures of power collection equipment, etc., the line often appears "negative loss". The lean management of the power system is also of great significance. [0003] Nowadays, the power system checks the basic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06Y04S10/50
Inventor 熊健豪郭亮陈琛刘蓓周求宽王华云李升健杨浩
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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