Wind power dissipation scheduling method of cogeneration system based on electricity price-load linkage response

Abstract

The invention relates to a wind power dissipation scheduling method of cogeneration system based on electricity price-load linkage response. According to the method, a real-time electricity price mechanism is introduced, a new real-time electricity price is generated according to load change, the new real-time electricity price guides a power user to respond, load and real-time electricity price linkage response is achieved so as to guide the market behaviors among the main bodies of the power market and transfer the load across time periods. An electric boiler is installed in a heat load center so as to decouple the restraint of determining the electricity by heat, thereby reducing the heat energy loss in the transmission process. In the process of target optimization, the optimal coordination control of the daily load integral dynamic transfer across time periods and the thermal electrolytic coupling is achieved, so that the difference between the network cost and the auxiliary service cost of the abandoned wind is absorbed to the greatest extent, the wind energy is absorbed to the greatest extent, and meanwhile, the load peak-valley difference is reduced.

Description

technical field [0001] The invention relates to the field of optimal scheduling of electric power systems, in particular to a wind power consumption scheduling method for cogeneration systems based on electricity price-load linkage response. Background technique [0002] As a clean renewable energy source, wind power has broad prospects for development. Wind power output has uncertainty and obvious anti-peak characteristics. While the scale of wind power installations is increasing rapidly, wind curtailment occurs from time to time. Especially in the "Three Norths" region, wind curtailment is serious. According to the 2017 wind power statistics from the National Energy Administration, the average wind power abandonment rate in my country is about 12%, of which 33%, 29%, 21%, 15%, and 14% wind power abandonment in Gansu, Xinjiang, Jilin, Inner Mongolia, and Heilongjiang respectively. Analyzing the reasons, on the one hand, the structure of the power supply is unreasonable, ...

AI Technical Summary

Problems solved by technology

Or set the electric boiler inside the thermal power plant to absorb the abandoned wind and compensate for heat supply. The capacity of wind power consumption is limited by the capacity of the electric boiler

Or introduce demand price elasticity into the dispatching system, guide users to respond according to the difference in electricity prices at each moment, actively change the electricity consumption pattern, complete load transfer, and improve the capacity of wind power consumption during low load periods, but most of this demand response is through Numerical assumptions or social questionnaires, it is difficult to guarantee the accuracy of demand price elasticity response

[0004] To sum up, the current research has not considered the participation of electric boilers from the perspective of real-time electricity prices, and guided the power generation side, distribution side, power consumption side and other market players to actively cooperate with wind power consumption through economic signals.

Images