面向网络节点的新能源高占比系统消纳阻力精细化评估  

Refined evaluation of consumption resistance of system with high proportion of renewable energy for network nodes

作　　者：苏常胜 王森[2] 孙谊媊 李凤婷 SU Changsheng;WANG Sen;SUN Yiqian;LI Fengting(State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830006,China;College of Electrical Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]国网新疆电力有限公司,新疆维吾尔自治区乌鲁木齐830006 [2]新疆大学电气工程学院,新疆维吾尔自治区乌鲁木齐830047

出　　处：《电力工程技术》2022年第5期67-75,共9页Electric Power Engineering Technology

基　　金：国家自然科学基金资助项目(51767023)。

摘　　要：随着新能源装机容量的不断提升,新能源高占比系统弃风弃光问题严峻,开展新能源消纳问题研究,精确定位新能源消纳阻力对提升新能源消纳措施的制定有重要意义。文中提出一种面向网络节点的电力系统新能源消纳阻力精细化评估方法。首先,基于潮流追踪算法将网络节点潮流划分为常规机组注入、新能源注入和负荷流出三部分;其次,从网络节点角度建立调峰、调频及节点电压偏差约束与新能源消纳的数学关系模型,计及三者耦合关系分析网络节点弃电情况;然后,构建基于网络节点的新能源消纳阻力评估模型并求解,定位系统中新能源消纳的关键节点,明确各节点新能源消纳制约因素并量化新能源消纳阻力;最后,基于改进IEEE 39节点系统设计算例,验证了评估方法的有效性。所提评估方法可为电力部门采取措施以提升新能源消纳提供依据。With the increasing installed capacity of renewable energy,the problem of wind and solar power abandonment in systems with high proportion of renewable energy is serious.It is of great significance to carry out the research on the problem of renewable energy consumption and accurately position the resistance of renewable energy consumption to improve the formulation of renewable energy consumption measures.In this paper,a refined evaluation method of renewable energy consumption resistance for power system is proposed.Firstly,based on the power flow tracking algorithm,the power flow of network nodes is divided into three parts,namely conventional unit injection,renewable energy injection and load outflow.Secondly,from the point of view of network nodes,the mathematical relationship models of peak modulation,frequency modulation,node voltage deviation constraint and renewable energy consumption are established,and the coupling relationship among the three is considered to analyze the power abandonment of network nodes.Then,the evaluation model of renewable energy consumption resistance based on network nodes is constructed and solved,the key nodes of renewable energy consumption in the system are located.The restriction factors of renewable energy consumption of each node are defined and the renewable energy consumption resistance is quantified.Finally,an example is designed based on improved IEEE 39-bus system to verify the effectiveness of the evaluation method.The proposed evaluation method can provide a basis for the power sector to formulate measures to improve the consumption of renewable energy.

关 键 词：新能源高占比系统 新能源消纳阻力 精细化评估 新能源限制电量 潮流追踪算法 关键节点 

分 类 号：TM711[电气工程—电力系统及自动化]