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Comprehensive modeling and parameter identification of wind farms based on wide-area measurement systems

Journal of Modern Power Systems and Clean Energy 2016年第3期4卷 383-393页

作者： Yinfeng WANG Chao LU Lipeng ZHU Guoli ZHANG Xiu LI Ying CHEN State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Power Research Institute Eastern Inner Mongolia Power Grid of ChinaSaihan DistrictHohhotChina

With intermittence and stochastics of wind power largely introduced into power systems, power system stability analysis and control is in urgent need of reliable wind farm models. Considering the superiority of wide-area measurement systems, this paper develops a novel methodology for practical synchrophasor measurement-based modeling and parameter identification of wind farms. For the sake of preserving basic structural characteristics and control patterns simultaneously, a comprehensive wind farm model is constructed elaborately. To improve the efficiency of the identification procedure,dominant parameters are classified and selected by trajectory sensitivity analysis. Furthermore, an improved genetic algorithm is proposed to strengthen the capability of global optimization. The test results on the WECC benchmark system and the CEPRI 36-bus system demonstrate the effectiveness and reliability of the proposed modeling and identification methodology.

关键词： Wind farm trajectory sensitivity Dominant parameter Improved genetic algorithm(IGA) Parameter identification

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Online Decision-Making and Control of Power System Stability Based on Super-Real-Time Simulation

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CSEE Journal of Power and Energy Systems 2016年第1期2卷 95-103页

作者： Fang Tian Xing Zhang Zhihong Yu Weijiang Qiu Dongyu Shi Jian Qiu Min Liu Yalou Li Xiaoxin Zhou China Electric Power Research Institute(CEPRI) Beijing 100192China

During power grid cascading failure,the operating point changes frequently,resulting in a mismatch or inaccuracy of online pre-decision making emergency control *** solve this problem,an online power system stability decisionmaking and control method based on super-real-time simulation is presented in this paper.A decision-making and control system is developed in which the three main operation modes,offline pre-decision-making,online pre-decision-making,and real-time control,are all *** verify the method,ADPSS(advanced digital power system simulator)is used to simulate a digital power grid with about 20,000 *** closed-loop operation of the digital power grid and the online decisionmaking and control system are *** results show that when online pre-decision making control strategies are mismatched,aided real-time control works well and can prevent power grid stability loss.

关键词： Control strategies decision-making emergency control parallel computing real-time control super-real-time trajectory sensitivity

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