Circuit overloading processing method used for direct current transmission system

A technology for DC transmission system and line overload, applied in the direction of DC network circuit devices, circuit devices, electrical components, etc., can solve the problems of long time consumption and unfavorable power grid stable operation

Active Publication Date: 2014-10-01
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a line overload processing method for direct current transmission system. The current method to solve the problem of

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  • Circuit overloading processing method used for direct current transmission system
  • Circuit overloading processing method used for direct current transmission system
  • Circuit overloading processing method used for direct current transmission system

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Embodiment Construction

[0089] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0090] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0091] like figure 1 As shown, the line overload processing method for DC transmission system according to the embodiment of the present invention includes the following steps:

[0092] S101: Calculate the line flow of the direct current transmission system, and judge whether there are overloaded lines in the network;

[0093] S102: If a line in the network is overloaded, form an overloaded branch set and a candidate branch set;

[0094] S103: Compare the sche...

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Abstract

The invention discloses a circuit overloading processing method used for a direct current transmission system. The circuit overloading processing method which is used for the direct current transmission system and is high in reliability and easy and convenient to use is obtained by building a direct current transmission system model equation and a circuit active power correlation coefficient. By means of the circuit overloading processing method, the tide after a network structure is changed can be rapidly obtained only through tide distribution of an electric system before the network structure is changed and the circuit active power correlation coefficient; when serious overloading occurs in the electric system, in order to prevent tripping, caused by long-time overloading, of a circuit, circuits capable of eliminating circuit overloading to the maximum degree can be rapidly determined to be closed through calculation with the circuit overloading processing method. The circuit overloading processing method can be used for guiding planning and constructing of the electric system and provides an effective tool for processing circuit overloading of the direct current transmission system; in addition, in practical operation, visual theoretical guidance can be given to scheduling, and the direct theoretical basis is provided for real-time scheduling.

Description

technical field [0001] The invention belongs to the technical field of direct current transmission in electric power systems, and in particular relates to a line overload processing method for a direct current transmission system. Background technique [0002] With the continuous development of grid technology, the advantages of DC transmission system are becoming more and more obvious. The DC transmission system has a variety of operation modes and can be flexibly switched manually or automatically. According to the state requirements of the DC transmission system, a reasonable selection of the optimal operation mode can effectively improve the safety, stability, operation reliability and equipment availability of the DC transmission system. , making it more effective. [0003] However, with the expansion of the grid scale and the improvement of the voltage level, the problem of line overload will inevitably appear. At present, the method of dealing with the problem of lin...

Claims

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Application Information

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IPC IPC(8): H02J1/00
Inventor 陈培育袁世强李国栋李树青王瑶杜明韩磊刘亚丽
Owner STATE GRID CORP OF CHINA
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