经柔直电网互联的含抽蓄的联合发电系统最大供电量计算

张晓华; 魏子睿; 马煜; 耿光飞; 杨晓楠

引用本文:	张晓华,魏子睿,马煜,等.经柔直电网互联的含抽蓄的联合发电系统最大供电量计算[J].电力系统保护与控制,2020,48(4):134-142.
	ZHANG Xiaohua,WEI Zirui,MA Yu,et al.Maximum power supply calculation of combined power generation with pumped storage system interconnected by VSC-HVDC grid[J].Power System Protection and Control,2020,48(4):134-142

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经柔直电网互联的含抽蓄的联合发电系统最大供电量计算
张晓华¹,魏子睿²,马煜³,耿光飞²,杨晓楠⁴
(1.国网东北电力调控分中心，辽宁沈阳110180;2.中国农业大学，北京 100083;3.辽宁省电力有限公司沈阳供电公司，辽宁沈阳110000;4.中国电力科学研究院有限公司，北京100192)

摘要:

为充分利用风光发电能量，合理调度抽水蓄能电站，针对经柔直电网互联的风光蓄联合发电系统向远方负荷中心供电这一工程实际需求，提出基于日供电量最大的抽水蓄能发电优化调度模型及方法。采用最优潮流法计算受电区(负荷中心)全天的消纳极限。并以此极限为约束，同时考虑抽蓄电站库容与运行工况等限制，建立了抽蓄电站功率优化调度模型。提出的分段法与等效面积法显著提升了优化模型的计算速度。在某地风光蓄发电系统与柔直输电网架结构的基础上，用IEEE30节点系统模拟受端电网，建立仿真算例。比较了几种最大供电量计算方法的结果，验证了所提方法与模型的有效性。

关键词: 风光蓄联合发电最大供电能力动态优化削峰填谷柔直电网

DOI：10.19783/j.cnki.pspc.190321

分类号:

基金项目:北京市科委项目“柔直电网汇集新能源接入交流电网调度技术研究”(Z161100004816025);国家电网科技项目资助“±500 kV柔性直流电网调度技术研究”

Maximum power supply calculation of combined power generation with pumped storage system interconnected by VSC-HVDC grid

ZHANG Xiaohua¹,WEI Zirui²,MA Yu³,GENG Guangfei²,YANG Xiaonan⁴

(1. State Grid Northeast Power Control Subcenter, Shenyang 110180, China;2. China Agricultural University, Beijing 100083, China;3. Shenyang Power Supply Company, Liaoning Electric Power Co., Ltd., Shenyang 110000, China;4. China Electric Power Research Institute Ltd., Beijing 100192, China)

Abstract:

In order to make full use of the energy of wind-photovoltaic power generation and rationally dispatch pumped storage power stations, this paper proposes an optimal dispatching model and method for pumped storage power generation based on the maximum daily power supply, aiming at the actual demand of the project that the wind-photovoltaic storage combined power generation system interconnected through VSC-HVDC grid supplies power to remote load centers. The optimal power flow method is used to calculate the all-day renewable energy consumption limit of the power receiving area (load center). Taking this limit as constraint and considering the reservoir capacity and operation condition of pumped storage station, an optimal power dispatching model for pumped storage station is established. The proposed segmentation method and equivalent area method significantly improve the calculation speed of the optimization model. The simulation case is based on the structure of wind-photovoltaic storage power system and flexible VSC-HVDC power grid in a certain area, the load center power grid is simulated with the IEEE30-bus system. The results of several calculation methods of maximum power supply are compared, which verifies the effectiveness of the proposed methods and models. This work is supported by Project of Beijing Science and Technology Commission “Technical Research on VSC-based DC Grid Collecting Renewable Energy Integrating AC Power Grid Dispatch” (No. Z161100004816025) and Science and Technology Project of State Grid Corporation of China “Technical Research of ±500 kV VSC-based DC Grid Dispatch”.

Key words: wind-photovoltaic-pumped storage systems maximum power supply capability dynamic optimization peak load shifting VSC-based DC grid

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