基于中长期交易电量校核的输电通道选择方法研究
2021-05-17江海龙王海超郝宇星张伟时
江海龙 王海超 郝宇星 张伟时



摘 要:当前,我国社会经济稳步发展,电力需求不断提升,电网日常运行期间会产生大量的中长期交易电量校核量。本研究以目前短期交易电量校核为基础,分析其中存在的缺点,结合电力市场中长期交易校核需求,构建中长期电量校核模型,以探究输电通道的有效选择策略。研究结果表明,以贪婪算法为核心的输电线路通道选择策略具有显著的效果,可以作为未来长期交易电量校核时输电通道的首要选择。
关键词:电网;交易校核;贪婪算法;输电通道;中长期交易;电力市场
中圖分类号:TM73;TP301.6文献标识码:A 文章编号:1003-5168(2021)03-0110-03
Research on Transmission Channel Selection Method Based on
Medium- and Long-Term Transaction Electricity Check
JIANG Hailong WANG Haichao HAO Yuxing ZHANG Weishi
(Anhui Power Exchange Center Co., Ltd.,Hefei Anhui 230061)
Abstract: At present, China's social economy is developing steadily, and the demand for electricity continues to increase, during the daily operation of the power grid, a large amount of medium- and long-term transaction electricity verification is generated. Based on the current short-term transaction electricity check, This study analyzed its shortcomings, combined with the mid- and long-term transaction check requirements of the electricity market, and built a medium- and long-term electricity check model to explore effective transmission channel selection strategies. The research results show that the transmission line channel selection strategy based on the greedy algorithm has a significant effect, and can be used as the primary choice for the transmission channel in the future long-term transaction power verification.
Keywords: power grid;transaction verification;greedy algorithm;transmission channel;medium-and long-term transaction;power market
从目前的电网技术来看,新能源产出电量交易呈现增长趋势,这种状态将会造成电网发电、用电的失衡[2]。这是因为较大数量的用电直接交易将会增加电网企业的结算风险,这种交易方式还会减少电网内动态电量的空间。
从我国当前经济发展的区域性来看,各地电量需求具有较大的差异,沿海地区用电需求量高出中部地区45%左右,高出西部地区85%左右。对此,我国采取电力外送和跨区交易的方式,以实现区域用电需求的平衡,但是这种方式将会增加电网运行中的不确定因素,尤其是电网安全、稳定方面。对于电网而言,保障其运行的稳定性和安全性是保障各区域正常用电的基础,若要更好地体验电网运行的安全性和灵活性,就必须做好电量交易的安全校核工作,特别是中长期电量交易过程中形成的交易电量核算[1-3]。……
