Method and system for preparing short-term multi-objective power generation plan of hydropower station for power grid peak regulation

Abstract

The invention discloses a short-term multi-objective power generation planning method and system for power grid peak-shaving hydropower stations. Firstly, a short-term multi-objective power generation planning model for cascade hydropower stations is constructed; the economic operation mode of the power station is determined according to the input conditions; Particles, and determine the individual extremum of each particle based on the objective function value of each particle, save some particles that are not dominated by each other in an external file set; update the position and speed of each particle, randomly select some particles for polynomial mutation, and repair Infeasible solution, recalculate the objective function value of each particle; update the individual extremum of each particle based on the recalculated objective function value of each particle; update the external file set according to the dominance relationship of the particle and the crowding distance, if it meets the preset If the termination condition is met, the external archive set is output, and then the global extremum is obtained. The invention can effectively reduce the peak regulation pressure of the system and improve the power supply quality. The power grid can operate safely and stably economically.

Description

Technical field [0001] The present invention is in the field of scheduling RESOURCES, more particularly, to a multi-objective response to short-term power generation planning method and system of power peaking station. Background technique [0002] With the continuous expansion of the rapid development of my country's power grid construction and grid-scale, grid security needs stable economic operation of increasingly high power system peaking capacity shortage problem has become increasingly prominent. Short-term generation schedule of cascaded hydropower preparation is an important part of cascade control center basin water transfer department, are "on Water power" mode. It is usually rung total generating capacity, power generation efficiency optimum or maximum peaking benefit as the goal, considering the short-term runoff forecasting, constrained power system load changes and power plant units maintenance scheduling, output vibration zones, so as to effectively utilize and re...

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a short-term multi-objective power generation plan preparation method and system for hydropower stations for power grid peak regulation, thereby solving the problem that the existing generation preparation method ignores both power generation and peak regulation The overall coordination relationship among them leads to technical problems such as water abandonment and peak shaving

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