Power angle stability-based direct current receiving end simultaneous stop overhaul scheme determination method and system

A power angle stability and solution technology, applied in the field of determining the maintenance plan of the DC receiving end

A power angle stability and solution technology, applied in the field of determining the maintenance plan of the DC receiving end

CN108428010AActive Publication Date: 2018-08-21CHINA ELECTRIC POWER RES INST +2
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  • Power angle stability-based direct current receiving end simultaneous stop overhaul scheme determination method and system
  • Power angle stability-based direct current receiving end simultaneous stop overhaul scheme determination method and system
  • Power angle stability-based direct current receiving end simultaneous stop overhaul scheme determination method and system

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[0072] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0073] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a power angle stability-based direct current receiving end simultaneous stop overhaul scheme determination method and system. The method comprises the steps of for each alternative simultaneous stop overhaul scheme, calculating a whole network average power angle oscillation characteristic damping ratio corresponding to each power generator node fault in an electric network, and determining a risk level corresponding to each power generator node fault; calculating an electric network topology entropy value of each alternative simultaneous stop overhaul scheme; calculating a sum of a load motor ratio and a unit spinning reserve rate in a time period corresponding to each alternative simultaneous stop overhaul scheme; calculating a comprehensive risk assessment valueof each alternative simultaneous stop overhaul scheme; and according to the comprehensive risk assessment value of each alternative simultaneous stop overhaul scheme, determining an optimal simultaneous stop overhaul scheme. The power angle stability problem of a receiving end system can be calculated directly through a simple numerical value to obtain the optimal scheme; quick assessment of the optimal scheme of overhaul power failure comprehensive planning is realized; and the working efficiency and quality of overhaul scheme assessment are improved.

Description

technical field [0001] The present invention relates to the technical field of electric power system maintenance schemes, and more specifically, to a method and system for determining a DC receiving terminal co-stop maintenance scheme based on power angle stability. Background technique [0002] The comprehensive maintenance plan of the power grid is one of the important daily tasks in the field of power system production. The actual operation status of the entire power grid only exists during the network closure period (usually the network closure period is July-August and January), and most of the other time periods are due to scheduled Routine equipment maintenance is more, but makes the power grid in a non-full wiring state for a long time. In the non-full wiring state, there are a large number of components that stop at the same time, such as the main line, main transformer, generator, etc., which make the grid structure of the power grid in a relatively weakened state ...

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Application Information

Patent Timeline
21 Aug 2018
Publication
CN108428010A
IPC
G06Q10/04; G06Q10/06; G06Q10/00; G06Q50/06
CPC
G06Q10/04; G06Q10/0635; G06Q10/20; G06Q50/06
Inventors
熊浩清; 易俊