针对现货市场交易机制下新能源送出型电网风电不确定性对电网调峰附加成本影响,提出考虑调峰附加成本的电网电价动态优化模型,为火电、储能和电热联合需求响应等调峰资源参与电网调峰提供灵活的电价信号,保障现货交易市场出清价格的准确性,同时提高各电力主体对新能源的消纳能力和系统碳减排能力。首先,以新能源送出型电网为基础,研究考虑风电不确定性的电网调峰需求量化方法,并建立火电、储能和电热联合需求响应等调峰资源的调峰附加成本模型;其次,研究现货市场中各电力主体的竞价策略,考虑调峰附加成本交易机制,建立以最小化运行成本为目标的现货市场出清模型,并采用合作博弈算法对模型进行求解,计算新能源送出型电网各主体出清价格;最后,以东北某新能源送出型电网实际运行数据为例进行仿真验证,结果表明所提出的考虑调峰附加成本的电网价格动态优化模型能有效提升电网对新能源的消纳能力,保障电力现货市场的高效稳定运行。
Abstract
In view of the influence of wind power uncertainty on additional cost of peak load regulation in new energy sending power grid under spot market trading mechanism, a dynamic optimization model of power grid price considering additional cost of peak load regulation is proposed, which provides flexible price signal for peak load regulation resources such as thermal power, energy storage and combined demand response of electricity and heat to participate in peak load regulation of power grid, ensures the accuracy of clearing price in spot market, and improves the ability of each power subject to absorb new energy and system carbon emission reduction. Firstly, based on the new energy transmission grid, the peak shaving demand method considering the uncertainty of wind power is studied, and the additional cost model of peak shaving resources such as thermal power, energy storage and combined demand response of electricity and heat is established. Secondly, the bidding strategy of each power subject in the spot market is studied. Considering the peak shaving additional cost trading mechanism, a spot market clearing model is established to minimize the operating cost, and the cooperative game algorithm is used to solve the model to calculate the clearing price of each subject of the new energy sending power grid. Finally, taking the actual operation data of a new energy sending power grid in Northeast China as an example, the simulation results show that the proposed dynamic optimization model of power grid price considering peak shaving additional cost can effectively improve the power grid’s ability to absorb new energy and ensure the efficient and stable operation of the power spot market.
关键词
新能源电网 /
现货市场 /
调峰 /
附加成本 /
合作博弈
Key words
new energy grid /
spot market /
peak shaving /
additional cost /
cooperative game
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基金
国家电网公司科技项目（526601200005）
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