Analysis, early warning and control method for power grid security

Abstract

The invention relates to an analysis, early warning and control method for power grid security. The method uses a security analysis and early warning system of the power system, the security analysis and early warning system has a distributed coordination frame structure and comprises a platform and an application system; the method comprises the following steps: the power system operates at a low load condition; the load climbs; a heavy load mode is carried out; the system has small disturbance; an N-1 fault occurs in the heavy load mode; a heavy load overhaul mode is carried out; an N-2 fault occurs in the heavy load mode; multiple breaking faults occur in the heavy load mode; the system enters a recovery mode after sectionalizing; and the power system is stable. According to the systematical summarization and analysis on the power grid security, the invention provides a comprehensive power grid security method covering all kinds of security analysis systems and control techniques and provides a representative model for describing all kinds of dynamic processes of the power grid, thus providing the foundation for the coordination and application of all security analysis systems and being beneficial to solving all kinds of problems in the states of large power grid alert and emergency.

Description

technical field [0001] The invention relates to a safety analysis, early warning and control method in the field of electric power systems, in particular to a power grid safety analysis, early warning and control method. Background technique [0002] At present, the power system mainly monitors and controls the operating status and fault process of the power system through energy management systems, automatic power generation control, automatic voltage and reactive power control, wide-area measurement systems, real-time simulation calculations, and safety automatic devices. Measurement methods and analysis methods have made great progress, but there are still some deficiencies in the systematicness and coordination of control strategies, and the development of steady-state regulation and emergency control is relatively slow. Including the steady state of partial component shutdown), the fault process, the state after the fault and the corresponding safety defense measures la...

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Problems solved by technology

[0002] At present, the power system mainly monitors and controls the operating status and fault process of the power system through energy management systems, automatic power generation control, automatic voltage and reactive power control, wide-area measurement systems, real-time simulation calculations, and safety automatic devices. Measurement methods and analysis methods have made great progress, but there are still some deficiencies in the systematicness and coordination of control strategies, and the development of steady-state regulation and emergency control is relatively slow. Including the steady state of partial component shutdown), the fault process, the state after the fault, and the corresponding safety defense measures lack a systematic method

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