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Determination method for power grid safety aggregative indicators

A technology for power grid security and comprehensive indicators, applied in the power field, can solve the problems of annihilation of key information, difficulties in dispatcher monitoring and control, etc.

Active Publication Date: 2014-12-31
STATE GRID CORP OF CHINA +3
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Problems solved by technology

These weight calculation methods, after obtaining the indicator weights, are directly used to aggregate comprehensive indicators, which will bring about the problem of obliteration of key information, that is, the overloading and over-limit of some indicators cannot be reflected in the representation of comprehensive indicators because of the aggregation. Difficulty with dispatcher monitoring and control

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  • Determination method for power grid safety aggregative indicators
  • Determination method for power grid safety aggregative indicators
  • Determination method for power grid safety aggregative indicators

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Embodiment Construction

[0084] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0085] The flow chart of a method for determining the comprehensive index of power grid security provided by the present invention is as follows: figure 2 shown, including the following steps:

[0086] 1) According to the actual power grid research results, 15 basic grid security indicators were selected, and the calculation formula was designed in combination with the index structure, index adaptability and dimensional consistency; the schematic diagram of the selected grid security basic indicators is as follows figure 1 As shown, the 15 basic grid safety indicators include line load rate indicators, transformer load rate indicators, section power flow indicators, frequency indicators, voltage indicators, active power reserve indicators, voltage stability indicators, short-circuit current indicators, static safety ana...

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Abstract

The invention relates to a determination method for power grid safety aggregative indicators. The method comprises the following steps: selecting 15 power grid safety basic indicators according to an actual power grid research result; determining a calculation formula by combining indicator constitutive property, indicator adaptability and dimension consistency; calculating initial weight of the 15 safety basic indicators under the aggregative indicators by adopting an analytic hierarchy process; revising the obtained weight of the step (2) by using a variable weight penalty function; calculating the power grid safety aggregative indicators by using the final weight; carrying out safety grade division and exhibition on a power grid operation state; drawing a power grid safety indicator movement track map. According to the determination method, the power grid safety basic indicators are screened in view of engineering functionization and the calculation formula is designed; the variable weight penalty function is introduced on the basis of obtaining all the weights by the analytic hierarchy process to be used for revising heavy-load or out-of-limit indicator weights, and current and future situations of a power grid are determined; a direct power grid situation monitoring means is provided for schedulers by the power grid safety indicator movement track map.

Description

technical field [0001] The invention relates to a determination method in the field of electric power technology, in particular to a determination method for a comprehensive index of power grid safety. Background technique [0002] With the construction of UHV smart grid, the development of UHV power grid, AC / DC hybrid and new energy, the complexity of the interconnected grid is getting higher and higher, and the amount of power grid operation status and information grows in geometric progression, although it is expressed one by one by conventional classification indicators The status of the power grid can reflect the security situation of the power grid in detail, but it cannot intuitively perceive the overall situation of the power grid security. When the system suddenly encounters an accident or is about to be in danger in the future, dispatchers are often unable to perceive it in a timely and accurate manner when faced with massive data and various classification indicat...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 徐鹏李峰杨胜春姚建国杨争林於益军冯树海王勇汤必强石飞王礼文潘玲玲李烽刘俊郭晓蕊
Owner STATE GRID CORP OF CHINA
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