| 引用本文: | 孙国强,李育燕,卫志农,叶 芳.含VSC- HVDC的交直流混合系统状态估计[J].电力自动化设备,2010,(9): |
| SUN Guoqiang,LI Yuyan,WEI Zhinong,YE Fang.State estimation of power system with VSC-HVDC[J].Electric Power Automation Equipment,2010,(9): |
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| 摘要: |
| 针对以电压源换流器（VSC）为基础的新一代高压直流输电（HVDC），对含VSC-HVDC的交直流混合系统进行静态状态估计。介绍了VSC-HVDC的稳态模型，通过确定交直流混合系统的量测函数、状态变量和雅可比矩阵，建立了含VSC-HVDC的交直流混合系统的状态估计模型；在基本加权最小二乘状态估计算法的基础上，提出了含VSC-HVDC的交直流混合状态估计同时迭代求解法；对经过修改的IEEE 14、IEEE 30、IEEE 57节点系统算例进行仿真，从算法的估计误差、迭代次数和计算速度等方面验证了算法的有效性和实用性。 |
| 关键词: 直流输电 电压源换流器 VSC-HVDC 静态状态估计 交直流混合系统 |
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| 基金项目:国家自然科学基金资助项目（50877024）；河海大学自然科学基金资助项目（2009421411） |
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| State estimation of power system with VSC-HVDC |
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SUN Guoqiang1, LI Yuyan2, WEI Zhinong1, YE Fang1
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1.College of Energy and Electrical Engineering，Hohai University，Nanjing 210098，China;2.Guodian Nanjing Automation Co.，Ltd.，Nanjing 210003，China
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| Abstract: |
| The static state estimation of power system with VSC-HVDC is carried out for the HVDC（High Voltage Direct Current） transmission based on VSC（Voltage Source Converter）. The steady model of VSC -HVDC is introduced，the measurement equations，state variables and Jacobian matrix of hybrid AC／DC system are determined and the state estimation model of power system with VSC-HVDC is built. A uniform iterative algorithm based on the WLS（Weighted Least Square） is proposed to get the solution. Simulations are carried out for the modified IEEE 14-bus，IEEE 30-bus and IEEE 57-bus systems，which shows the effectiveness and practicality of the algorithm in terms of estimation error，iteration times and calculation speed． |
| Key words: HVDC transmission VSC VSC-HVDC static state estimation hybrid AC／DC system |
