Determining method of operating mode of electric power system under complex energy source environment

Abstract

The invention provides a determining method of an operating mode of an electric power system under the complex energy source environment and belongs to the field of analysis of safety and stability of the electric power system. The method comprises the steps of generating an initial operating mode of the electric power system, determining the voltage control range of a bus, carrying out safety and stability calculation on a single component, evaluating the single component, carrying out safety and stability calculation under the severe fault impact and determining the final operating mode of the electric power system. For the problem of determination of the energy base mode of wind electricity, photoelectricity and thermal power bundling and external transmission, the method for comparison and analysis through different proportion starting-up modes of various power sources is provided through the characteristic analysis of the wind electricity, photoelectricity and thermal power new energy external transmission electric power system, and through the fault analysis under various starting-up combination modes, the requirement of N-1 is met after a system fault is ensured, the safety control measure amount of the system is the minimum after a severe fault happens, and favorable conditions are created for recovery of the system after the fault happens.

Description

technical field [0001] The invention belongs to the technical field of power system safety and stability analysis, and in particular relates to a method for determining the operation mode of a power system in a complex energy environment. Background technique [0002] Northwest China is rich in wind energy and solar energy resources, the local load level is low, the system scale is small, and the wind power consumption capacity is very limited. Large-scale wind power (wind power, photovoltaic and thermal power, referred to as wind power) must be transported to other countries Regional consumption. The annual utilization hours of wind and solar power are low, and the economic efficiency of long-distance transmission alone is very poor; at the same time, the frequent fluctuation of wind and power power on the transmission line is extremely unfavorable to the safe and stable operation of the system. Adopting the bundling and delivery strategy of wind power, photovoltaic and th...

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Problems solved by technology

[0008] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a method for determining the operation mode of the power system in a complex energy environment. Aiming at the problem of determining the mode of wind-fired energy bundling and sending out energy bases, the method of wind-and-fire new energy sending power system Characteristic analysis, a method for comparative analysis of start-up modes using different ratios of various power sources is proposed. Through fault analysis under various start-up combinations, it is possible to ensure that the system meets the requirements of N-1 after a system failure, and makes the system The minimum amount of security control measures and create favorable conditions for system recovery after failure

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