适应高比例新能源的跨省中长期电量弹性交易机制与实践  

An Elastic Mechanism and Its Practice for Inter-provincial Mid-and Long-term Electricity Transactions in the Context of High Renewable Energy Integration

作　　者：孙骁强 贺元康 丁涛[2] 孙嘉玮 原博 黄雨涵 SUN Xiaoqiang;HE Yuankang;DING Tao;SUN Jiawei;YUAN Bo;HUANG Yuhan(Northwest Branch of State Grid Corporation of China,Xi'an 710048,Shaanxi Province,China;School of Electrical Engineering of Xi'an Jiaotong University,Xi'an 710049,Shaanxi Province,China)

机构地区：[1]国家电网公司西北分部,陕西省西安市710048 [2]西安交通大学电气工程学院,陕西省西安市710049

出　　处：《中国电机工程学报》2025年第7期2472-2485,I0003,共15页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家电网有限公司西北分部科技项目(SGNW0000JYJS2310076)。

摘　　要：在我国构建新型电力系统的背景下,保证率刚性执行的传统中长期电量交易模式与新能源强波动性、随机性的特征相背,电力外送出现惜售现象。该文基于送受端备用共享、调峰共用、风险共担的原则,探索跨省中长期交易的新型电力市场电量弹性交易机制,旨在促进大规模新能源外送,提升资源优化配置的灵活性。依据概率-出力水平曲线,该文建立购售双边量价浮动的弹性交易模型,设计配套的浮动交易上限定量模型、优化出清方法及偏差考核方法。仿真结果表明,所提机制能够利用固定电量锁定外送基本盘,增强中长期市场的交易活力,实现浮动电量外送灵活化,提高区域新能源消纳水平。In the context of China's new power system construction,the traditional mid-and long-term transaction mode with fixed guaranteed-output requirements cannot accommodate transactions on renewable energy,which is characterized by significant variability and randomness.This incompatibility often results in reluctance in power delivery sales.To this end,this paper proposes a new power market mechanism for mid-and-long-term electricity transactions among provinces.It adheres to shared backup,shared peak load management,and shared risk at the receiving end.The aim is to facilitate large-scale renewable energy delivery and optimize resource allocation through additional measures.Based on the probability-output rate curve,an elastic transaction model considering both the potential undelivery of sellers and default of buyers is presented in this paper.Supportive models are established for determining floating-energy ceilings,market clearing,and deviation assessment.Simulation results demonstrate that this mechanism enables a stable export base through fixed electricity sales while enhancing market vitality through floating energy sales,leading to improved regional consumption of renewable energy in inter-provincial mid-and long-term electricity transactions.

关 键 词：中长期电量交易 新型电力市场 新能源外送 概率-出力水平曲线 弹性交易模型 

分 类 号：TM73[电气工程—电力系统及自动化]