Reliability evaluation method and system of clustering transmission network of offshore wind plant

A transmission network and reliability technology, applied in the field of power transmission and transformation, can solve problems such as the inability to effectively evaluate the reliability of the transmission network of offshore wind farm clusters, and achieve the effect of evaluating reliability

Inactive Publication Date: 2018-03-23
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology

[0003] Based on this, in order to solve the problem that the reliability of the offshore wind farm cluster transmission network cannot be effectively evaluated at present, a method and system for evaluating the reliability of the offshore wind farm cluster transmission network are provided

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  • Reliability evaluation method and system of clustering transmission network of offshore wind plant
  • Reliability evaluation method and system of clustering transmission network of offshore wind plant
  • Reliability evaluation method and system of clustering transmission network of offshore wind plant

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Embodiment Construction

[0021] In order to further illustrate the technical means adopted by the present invention and the effects obtained, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0022] figure 1 It is a schematic flowchart of a method for evaluating the reliability of an offshore wind farm cluster transmission network in an embodiment, such as figure 1 As shown, the steps of the method include:

[0023] S101. Obtain the minimum path of the transmission network and the information of each minimum path affected by the operating state of the power element, and construct the minimum path matrix of the transmission network.

[0024] In this step, each row in the minimum path matrix can be used to represent a power channel in the transmission network, that is, the minimum path of the transmission network.

[0025] S102. Obtain the fault influence range of...

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Abstract

The invention relates to a reliability evaluation method and system of a clustering transmission network of an offshore wind plant. The method comprises the steps that minimal paths of the transmission network are obtained, a minimal path matrix of the transmission network is constructed, an involved outage matrix of components in the power transmission network is constructed according to a faultinfluence scope of the components, an enlarged fault matrix and a non-enlarged fault matrix are obtained according to the involved outage matrix and the minimal path matrix, a minimal cut set of the non-enlarged fault matrix is determined, a minimal cut set of the enlarged fault matrix is determined, an expected value of output capacity decrease of two integrated reliability indexes of main wiringof a transformer station and the blocked probability of output capacity are calculated according to the minimal cut sets of the non-enlarged and enlarged fault matrixes, and the reliability of the clustering transmission network of the offshore wind plant is evaluated according to the expected value of the output capacity decrease and the blocked probability of the output capacity. Via the method, the reliability of different topologies of the transmission network is determined via the minimal cut sets, and the reliability of the clustering transmission network of the offshore wind plant is evaluated effectively.

Description

technical field [0001] The present invention relates to the technical field of power transmission and transformation, in particular to a reliability evaluation method for an offshore wind farm cluster transmission network and a reliability evaluation system for an offshore wind farm cluster transmission network. Background technique [0002] At present, domestic offshore wind power research is still mostly limited to the level of a single offshore wind farm project, lacking the overall research and planning of regional offshore power transmission systems. At present, power system reliability assessment can be divided into two basic methods: one is analytical method, and the other is simulation method. Compared with the conventional system, the component reliability of the offshore wind farm cluster transmission network is higher, and the electrical connection between the components is close. If the simulation method is used, it is very likely that the required system state c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/16
CPCG06F17/16G06Q10/0635G06Q50/06Y04S10/50
Inventor 郑明陆莹刘天琪李保宏
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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