Operation simulation method with wind electricity and pumped storage power station united to bear system base loads

Abstract

The invention provides an operation simulation method and device with wind electricity and a pumped storage power station united to bear system base loads. The wind abandoning electric power of a wind power station is restrained and determined according to the upper-limit limitation when the wind electricity is connected into a power grid, next, the pumped storage power station is arranged to utilize the wind abandoning electric power in the wind abandoning period of the wind electricity to pump water, then, pumped storage is arranged to generate power when the wind electricity does not exceeds the limit, wind and storage are optimized to contribute jointly, finally, a load curve is corrected according to the contribution of the wind-and-storage-united power station to obtain a net-load curve, and then a unit in an electrical power system is simulated according to the net-load curve. The scheme is favorable for analyzing the influences on economy of the electrical power system overall operating technology under the condition that the wind and the storage are united, the achieving method is easy, calculating speed is high, and engineering application is facilitated.

Description

technical field [0001] The invention relates to the technical field of economical operation of electric power systems, in particular to an operation simulation method and device for wind power and pumped storage power stations jointly undertaking system base loads. Background technique [0002] Wind power is a renewable and green energy, but its output has the characteristics of randomness, volatility, and anti-peak regulation. After large-scale wind power is integrated into the grid, it will increase the difficulty of peak regulation and frequency regulation of the power system, affecting the safe and stable operation of the system. The pumped storage power station has the characteristics of fast start-up with load, low accident rate, and strong peak regulation capability. The combined operation of wind power and pumped storage is an effective way to improve the utilization rate of wind power and reduce the impact of wind power output on the power system. [0003] At presen...

AI Technical Summary

Problems solved by technology

The existing technology has the following deficiencies: First, only from the perspective of the wind-storage isolated system, the optimal operation of the wind-storage combination is realized, and it is not convenient to embed the power system operation simulation analysis software for large-scale power system operation simulation calculations, which is not conducive to the analysis of wind-storage systems. The impact of joint operation on the technical economy of the overall operation of the power system; second, operational research algorithms or intelligent optimization algorithms are difficult to solve, and generally have the problem of dimensionality disaster, so it is not conducive to the actual engineering simulation of modern large-scale power systems with large-scale wind power computing work

[0005] Aiming at the problems in the prior art that it is inconvenient to embed power system operation simulation analysis software to carry out large-scale power system operation simulation calculations, it is not conducive to analyze the impact of wind-storage combined operation on the overall technical and economical operation of the power system, and the algorithm is difficult to solve, a method is proposed. The operation simulation method and device of wind power and pumped storage power station jointly bearing the system base load is one of the urgent problems to be solved in the field of power system economic operation technology.

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