| 引用本文: | 翟伟翔,周宇华,苏 适,刘友宽.火电厂厂级自动电压控制系统研制[J].电力自动化设备,2011,31(11): |
| ZHAI Weixiang,ZHOU Yuhua,SU Shi,LIU Youkuan.Development of plant-level automatic voltage control system for power plant[J].Electric Power Automation Equipment,2011,31(11): |
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| 摘要: |
| 为保证电网安全、优质、经济运行，将火电厂自动电压控制在现有厂级自动发电控制系统平台上扩展实施，构成了一体化专用子站。通过动态辨识系统阻抗，适当修正自适应PID调节器的增益，进行电压和无功的在线转换，实现无差、快速调节。在传统的等功率因数分配方法与无功容量系数分配方法基础上提出了偏置调整算法，给出了计算公式。针对实际应用，阐述了参数采集、运行模式、闭锁保护等方面的技术问题。通过电厂的实际运行，证明该系统能够稳定可靠地工作，并具有操作方式灵活、调节品质较好、故障与安全处理机制完善等特点。 |
| 关键词: 电厂 电压控制 负荷 分配系统 辨识 PID控制 分配方法 偏置调整 |
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| Development of plant-level automatic voltage control system for power plant |
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ZHAI Weixiang1, ZHOU Yuhua1, SU Shi2, LIU Youkuan1
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1.Renewal Energy and Smart Grid Bureau，Yunnan Electric Power Test & Research Institute， Kunming 650217，China;2.North China Electric Power University’s Postgraduate Workstation， Yunnan Power Grid Company，Kunming 650217，China
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| Abstract: |
| An integrated AVC（Automatic Voltage Control） substation is developed based on existing plant-level automatic generation control system for power plant. The gain of adaptive PID adjuster is properly modified by the dynamic identification of system impedance and the voltage and reactive power are online switched for realizing the error-free and quick adjustment. The bias adjustment algorithm is put forward based on traditional equivalent power factor distribution and reactive power capacity coefficient distribution and the calculation formulas are given. Technical issues of parameter collection，operating mode and protective blocking are described for practical application. Site operation proves that，the proposed AVC system operates stably and reliably with flexible operating manner，good adjustment property and perfect security mechanism. |
| Key words: power plants voltage control electric loads dispatch system identification PID control distribution algorithm bias adjustment |
