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我国新电改提出要完善跨省区电力交易机制政策,制定合理高效的跨省区外购电中长期交易规划。考虑省间电力传输的约束性,引入了外购电源的调峰深度概念,结合外购电价、省内负荷和发电出力等因素,通过对每月典型日的电力电量平衡分析,确定省内电力供应缺口,建立了外购电年度交易规划模型,从而优化不同电源的购电顺序,实现年度外购电费用最小的目标。模拟计算表明:1)通过增加调峰深度较好而电价较高的外购电量,可以减少调峰深度较差而电价较低的外购电量,从而降低购电费用;2)不同月份的电力需求情况对该月外购电交易的优化效果有较大影响,新方法在电力需求较少的月份能取得很好的优化结果。
China’s new electricity reform proposed to improve inter-provincial electricity trading mechanism policies, develop a reasonable and efficient cross-provincial electricity purchase medium-and long-term trading plan. Considering the restraint of power transmission between provinces, the concept of peak shaving depth of purchased power is introduced. Combined with the purchased electricity price, load in the province and output of power generation and other factors, the monthly electricity balance in typical days of the province is determined to determine the provincial electricity Supply gap, the establishment of outsourcing annual trading planning model, so as to optimize the purchase order of different power supply to achieve the minimum annual purchase of electricity costs the goal. The simulation shows that: 1) By increasing the peak shaving depth and higher electricity prices purchased power, you can reduce the peak shaving depth and lower electricity prices purchased electricity, thereby reducing the cost of purchasing electricity; 2) different months of electricity The demand situation has a great impact on the optimization effect of this month’s outsourcing transaction, and the new method can achieve good optimization results in the months with less electricity demand.