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Subjective and objective weight integration-based multi-feed DC drop point scheme evaluation method

A multi-feed DC, objective weight technology, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as large subjectivity, large differences in understanding, and dependence on objective data.

Inactive Publication Date: 2016-11-09
NARI TECH CO LTD +3
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The weight obtained by the objective weight calculation method can reflect the objective advantages and disadvantages of the multi-infeed DC drop point scheme, but this method relies too much on objective data, and sometimes it is quite different from people's understanding of the multi-infeed DC drop point scheme
The subjective weight calculation method makes full use of empirical knowledge, but this method is mainly based on experience, so there is greater subjectivity.

Method used

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  • Subjective and objective weight integration-based multi-feed DC drop point scheme evaluation method
  • Subjective and objective weight integration-based multi-feed DC drop point scheme evaluation method
  • Subjective and objective weight integration-based multi-feed DC drop point scheme evaluation method

Examples

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Embodiment 1

[0099] The wiring diagram of the improved IEEE 39 node system of the present embodiment is as follows figure 2 shown. In order to highlight the problem of selecting the DC drop point, this calculation example divides the AC system into two areas, in which the load is mainly concentrated in area 2, the connecting AC line between the two areas is disconnected, and node 23 is used as the sending end Build a DC line that transmits power from area 1 to area 2, and select an optimal DC drop point in area 2 as the receiving end. The specific implementation process is as figure 1 shown.

[0100] Step 1: Make a pairwise comparison of the importance of all evaluation indicators of the multi-infeed direct current placement scheme, establish an evaluation matrix, and solve the subjective weight of the evaluation indicators through the subjective weight model.

[0101] Among them, based on experience, the pairwise comparison matrix D of the weight of the multi-feed DC drop point evalua...

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Abstract

The invention discloses a subjective and objective weight integration-based multi-feed DC drop point scheme evaluation method, and belongs to the technical field of electric power system operation and control. The method comprises the following steps of: carrying out comparison on the significance of all of the multi-fed DC drop point scheme evaluation indexes in pairs, and establishing an evaluation matrix; solving subjective weights of the evaluation indexes through a subjective weight model; calculating each index of an AC system under each multi-feed DC drop point scheme through electric power system simulation software BPA and solving objective weights of the evaluation indexes through an objective weight model; on the basis of the solved subjective weights and objective weights, solving a comprehensive weight of the indexes through a comprehensive weight model; and obtaining the multi-feed DC drop point scheme evaluation indexes on the basis of the comprehensive weigh. The method disclosed by the invention can be widely applied to the evaluation of DC drop point schemes of AC large power grids, and is particularly suitable for the evaluation of DC drop point schemes of AC large power grids which are 500 kV or above.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control. Specifically, the invention relates to a method for evaluating a multi-infeed DC drop point scheme based on the integration of subjective and objective weights. Background technique [0002] The development of DC transmission technology has been relatively mature and reliable. With the increasing load demand of my country's coastal developed cities, more DC transmission projects will be put into the power grid. According to the plan, it is expected that dozens of direct current transmission projects will be completed and put into operation by 2020. Among them, there are many direct current transmission points in the load centers in the Middle East, which will bring many new challenges to the planning and operation of the power grid. Among these challenges, the selection of DC drop point is one of the important issues to be solved in power grid planning. [0003] DC dro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0637G06Q10/06393G06Q50/06
Inventor 汪成根李满礼刘福锁倪明李兆伟周前解兵徐珂
Owner NARI TECH CO LTD
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