抽蓄电站和经多端柔性直流电网接入的大规模新能源间的协调互补优化控制方案

发布时间：2018-05-31 22:33

本文选题：多端柔直 + 互补优化　；参考：《电力系统保护与控制》2017年23期

【摘要】：目前多端柔性直流电网多用于海上风电,但多端柔直本质上并不能抑制新能源出力波动。介绍了一种抽蓄电站和经多端柔性直流电网接入的大规模新能源间的协调互补优化控制方案。在网省调度中心设置控制主站,抽蓄电站内设置执行子站。主站担任主要数据分析、抽蓄电站有功调整指令发布等功能,并具备不同的控制模式。子站担任接收主站发布抽蓄电站有功调整指令,根据抽蓄电站内的实时运行工况,对每台机组的调速器发出实际执行指令。该系统主要用于解决跨区新能源消纳和风电光伏接入系统后对系统稳定性的影响,同时系统还具备应急功率波动控制功能,在华北电网出现大量功率缺额时提供紧急频率支援。仿真结果表明,协调互补优化控制方案能够有效地抑制新能源出力波动,降低新能源波动对华北电网的冲击,实现新能源的友好送出。
[Abstract]:At present, multi-terminal flexible DC networks are mostly used in offshore wind power generation, but multi-terminal flexible DC networks can not restrain the fluctuation of new energy sources in nature. This paper introduces a coordinated and complementary optimal control scheme between pumped storage power station and large scale new energy source connected by multi-terminal flexible DC network. The main control station is set up in the network province dispatching center, and the execution sub-station is arranged in the pumped storage power station. The main station acts as the main data analysis, the pumped storage power station active power regulation instructions issued and other functions, and has different control modes. The sub-station acts as the main receiving station to issue the active power adjustment instruction of the pumped storage power station. According to the real-time operating conditions in the pumped storage power station, the actual execution instructions are issued to the governor of each unit. The system is mainly used to solve the impact on the stability of the system after new energy absorption and wind photovoltaic access system. At the same time, the system also has the function of emergency power fluctuation control, and provides emergency frequency support when a large number of power gaps occur in North China Power Grid. The simulation results show that the coordinated and complementary optimal control scheme can effectively suppress the fluctuation of new energy sources, reduce the impact of new energy fluctuations on North China Power Grid, and realize the friendly transmission of new energy sources.
【作者单位】：中国电力科学研究院;
【基金】：国家重点研发计划项目(2016YFB0900605) 国家电网公司科技项目(XT71-16-035)~~
【分类号】：TM73

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