引用本文: | 陈金,郑亮,谢丽军,等.基于风火协调的闭环控制系统研究和应用[J].电力系统保护与控制,2019,47(18):136-144.[点击复制] |
CHEN Jin,ZHENG Liang,XIE Lijun,et al.Research and application of closed loop control system based on wind-fire coordination[J].Power System Protection and Control,2019,47(18):136-144[点击复制] |
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摘要: |
为了提高风电消纳,降低弃风率,研究了一种基于风火协调的闭环控制系统(以下简称闭环控制系统)。该系统根据风电上网断面的负载率设置不同区间并采取相适应的风火协调控制策略,在保证断面安全稳定的前提下尽可能提高风电消纳,在断面发生越限时则尽可能降低火电和适当减少部分风电。由于风电出力缺乏有效的预测技术,系统依据风场出力能否及时跟踪上轮指令情况进行风电发电能力的预估,同时在系统可靠性方面,系统增加了指令防误检查和控制模式自动切换逻辑。指令防误检查在指令出口前进行各项约束条件检查,确保下发的指令不会对系统造成较大冲击,引发新的安全稳定问题。控制模式自动切换功能是在系统出现异常时,风电自动跟踪新能源系统或人工控制,火电自动跟踪调度计划系统(Optimal Planning System, OPS)或人工控制,确保系统异常时仍能保持电网安全稳定运行。最后通过在山西电网的实际应用,验证系统的有效性和实用性。 |
关键词: 风火协调 闭环控制 控制策略 |
DOI:10.19783/j.cnki.pspc.181306 |
投稿时间:2018-10-19修订日期:2018-12-26 |
基金项目:国家重点研发计划项目资助(2018YFB0904500) 宁夏回族自治区重点研发计划(TZZD/NZC180152C) |
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Research and application of closed loop control system based on wind-fire coordination |
CHEN Jin,ZHENG Liang,XIE Lijun,WANG Maxiang,CHEN Tanglong |
(NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211000, China) |
Abstract: |
In order to improve the consumption of wind power and reduce the abandoned wind rate, a closed loop control system based on wind-fire coordination (Hereinafter referred to as a closed loop control system) is studied in this paper. The system can set different intervals according to the load rate of transmission cross-section, and adopt different control strategies in each interval. In the premise of ensuring the safety and stability of the cross-section, the capacity of wind power utilization will be improved as much as possible. When the cross-section is overloaded, the thermal power is reduced as much as possible, and the wind power is reduced appropriately. Due to the lack of effective forecasting technology for wind power, the wind power generation capability is estimated according to whether the wind is tracking the last command. At the same time, in the aspect of system reliability, the system has increased the check of instruction error proofing and automatic switching of control modes. In order to ensure that the instruction will not make a big impact on the system, and not cause new security and stability problems, all constraints can be checked before the instruction is sent. When the system is abnormal, the wind power automatically tracks the new energy system or manual control, and the thermal power automatically tracks the Optimal Planning System (OPS) or manual control to ensure the safe and stable operation of the power grid. Finally, the effectiveness and practicability of the system are verified by the practical application in Shanxi Power Grid. This work is supported by National Key Research and Development Program of China (No. 2018YFB0904500) and Key Research and Development Program of Ningxia (No. TZZD/NZC180152C). |
Key words: wind-fire coordination closed loop control control strategy |