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Distribution network topology check and maintenance method

A technology of topology structure and verification method, applied in the direction of reducing asymmetry of multi-phase network, eliminating/reducing asymmetry of multi-phase network, etc., can solve problems such as unbalanced three-phase voltage, power consumption, deviation of verification results, etc. To achieve the effect of solving time-consuming

Active Publication Date: 2017-12-22
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0006] The invention provides a distribution network topology verification and maintenance method, which can solve the problem of deviation in the verification results caused by the unbalanced three-phase voltage of the distribution transformer in the prior art, and solve the time-consuming traditional manual method. , the problem of power consumption

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  • Distribution network topology check and maintenance method

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Embodiment Construction

[0033] Please refer to figure 1 , is an overall flow chart of a method for verifying and maintaining a distribution network topology in the present invention.

[0034] Step A, acquiring basic data based on the electricity consumption information collection system. The basic data required for topology verification and maintenance is extracted from the power consumption information collection system, and the following data needs to be used: a. 10kV line data: 10kV line name, topology; b. Distribution transformer data: distribution transformer name, Distribution transformer three-phase voltage.

[0035] Taking the 10kV ZM line as an example, the line belongs to the 35kV GC substation, and the line supplies a total of 25 stations, as shown in Table 1.

[0036] Table 1 List of station areas supplied by 10kV ZM line

[0037]

[0038] Step B, based on the three-phase voltage of the distribution transformer in the station area obtained in step A, calculate the outlet voltage of ...

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Abstract

The invention discloses a distribution network topology check and maintenance method. The network comprises the steps that data related to a distribution network based on an electricity information collecting system are acquired; the distribution transformer outlet voltage is calculated when the influence of three-phase load unbalance is not considered; the correlation coefficient of the voltage curve of a powered transformer area under the same 10kV line is calculated, and the distribution network topology is checked; according to the topology check result, the correlation coefficient of the transformer area and the curve of the bus voltage of another substation is calculated to determine the correct substation to which the transformer area belongs; the correlation coefficient of the transformer area and the voltage curves of all 10kV outlet transformer areas is calculated to determine the correct 10kV line to which the transformer area belongs; and according to the GIS (Geographic Information System) information of the distribution network, possible misjudgment is corrected, and the maintenance of the distribution network topology result is completed. According to the invention, the problem of check result deviation caused by three-phase voltage unbalance of a distribution transformer in the prior art is solved, and the problem that a traditional manual mode is time-consuming and labor-consuming is solved.

Description

technical field [0001] The invention relates to the technical field of distribution network topology, in particular to a method for verifying and maintaining the distribution network topology. Background technique [0002] When the distribution network is running, in order to reduce the active network loss, balance the load, and improve the reliability, it is necessary to adjust the network structure of the distribution network. After the network structure is adjusted, the relevant information in the power consumption information collection system may not be updated in time, usually through Manually verifying and updating relevant data is time-consuming and labor-intensive. [0003] There are two main types of distribution network topology verification: the verification of the station area to which the low-voltage user belongs and the verification of the line to which the distribution transformer belongs. Publication No. CN 104218581, a method for verifying distribution net...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26
CPCY02E40/50H02J3/26
Inventor 唐泽洋万黎周鲲鹏曹侃忻俊慧王涛饶渝泽王文娜
Owner STATE GRID CORP OF CHINA
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