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Date of Publication:2022-10-06

Journal:电力系统自动化

Volume:42

Issue:18

Page Number:98-105

ISSN No.:1000-1026

Abstract:The anti-peaking characteristic of large-scale wind power has caused serious problem of wind curtailment during load valley period, which is particularly prominent during the heating period in the northern area of China. It is an important solution to improve the operation flexibility of combined heat and power units and the enthusiasm of power generation groups participating in peak load regulation. A two-stage dispatch strategy is presented by taking into account the coordination of different power generation groups. Each power generation group, as an independent stakeholder, is dispatched with its goal of the minimum coal consumption. Aiming at the problems of wind curtailment, heat storage devices are set to increase the capacities of power generation group participating in the peak load regulation. The compensation is introduced to realize the wind power accommodation strategy with characteristics of inner self-scheduling of power generation groups and auxiliary coordination among power generation groups. And the impacts on the output plans of the groups can be minimized. The results of a variety of dispatch modes show that the proposed dispatch strategy can maximize the wind power accommodation, ensure the benefits of power generation groups and improve the enthusiasm of power generation group to participate in the peak load regulation. © 2018 Automation of Electric Power Systems Press.

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