计及光热发电非线性运行特性的区域电网功率调节能力刻画方法
A Method for Characterizing the Power Regulation Capability of Regional Power Grid Considering the Nonlinear Operation Characteristics of Concentrating Solar Power Plant
朱芝润 1余娟 1杨知方 1李文沅 1周专 2常喜强2
作者信息
- 1. 输变电装备技术全国重点实验室(重庆大学),重庆市 沙坪坝区 400044
- 2. 国网新疆电力有限公司,新疆维吾尔自治区 乌鲁木齐市 830000
- 折叠
摘要
随着源网荷储一体化建设推进和多能互补系统发展,光热发电凭借其发电连续性、灵活性等优点,在多能互补系统中发挥的作用日益增大.准确描述光热电站运行特性并刻画含多能互补系统区域电网功率调节能力,对于实现电力资源优化配置有着十分重要的意义.然而,现有含光热电站经济调度模型,尚未计及储热系统充、放热过程能量损失成本,也缺乏对含光热电站区域电网的功率调节能力研究.为此,提出一种计及光热发电非线性运行特性的区域电网功率调节能力刻画方法.首先,考虑光热电站运行过程非线性约束及储热系统能量损失成本,构建计及光热发电非线性运行特性的电力系统经济调度模型.进一步,为解决光热发电非线性运行特性影响电网功率调节能力刻画这一问题,提出含光热电站电力系统经济调度模型线性化转换方法.在此基础上,基于多参数规划理论和 K-means 聚类算法,提出计及光热发电非线性运行特性的区域电网多时段功率调节能力刻画方法,实现联络线传输功率可行域的解耦计算,进而表征区域电网功率调节能力.最后,选取IEEE 30节点系统以及国内某省实际电力系统作为算例系统进行分析,验证所提方法的准确性及有效性.
Abstract
With the development of source-grid-load-storage and multi-energy complementary system,concentrating solar power plays an increasingly important role in multi-energy complementary system because of its advantages of continuity and flexibility.Accurately describing the operating characteristics of the concentrating solar power plant and obtaining the power regulation capability of the multi-energy complementary system is very important to realize optimal allocation of power resources.However,in the existing economic dispatch model,the cost of energy loss in the process of charging and discharging has not been taken into account,and there is also a lack of research on the power regulation capacity of regional power grids including concentrating solar power plants.Therefore,this paper presents a method to describe the power regulation capability of regional power grid considering the nonlinear operation characteristics of concentrating solar power plant.First,considering the nonlinear constraints of the operation process of the concentrating solar power plant and the energy loss cost of thermal storage system,a novel economic dispatching model of the power system with concentrating solar power plant is constructed.Further,in order to deal with the problem that the non-linear operation characteristics of concentrating solar power plant affect the characterization of the power regulation capacity,a linearization transformation method for the economic dispatch model of power system including concentrating solar power plants is proposed.Then,based on the multi-parameter programming theory and K-means clustering algorithm,a multi-period power regulation capability characterization method of regional power grid considering the nonlinear operation characteristics of concentrating solar power plant is proposed,in which the decoupling calculation of the feasible region of tie-line transmission power is realized and the power regulation capability of regional power grid is characterized.Finally,the IEEE-30 bus system and an actual provincial power system in China are used as examples to verify the effectiveness of the proposed method.
关键词
光热发电/线性化方法/多参数规划/经济调度/联络线传输功率可行域Key words
concentrating solar power/linearization method/multi-parameter programming/economic dispatch/feasible region of tie line transmission power引用本文复制引用
基金项目
国家电网有限公司科技项目(5100-202236503A-3-0-SF)
出版年
2024
国家科技期刊平台
NSTL
万方数据