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Research on Predictive Algorithm for Power System Frequency Stability Based on Wams

Author: ZhaoZuoZuo
Tutor: WangXiaoRu
School: Southwest Jiaotong University
Course: Proceedings of the
Keywords: Power system Frequency stability Wide Area Measurement System Monte Carlo method PSS / E
CLC: TM712
Type: Master's thesis
Year: 2010
Downloads: 250
Quote: 2
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Abstract


The frequency is an important indicator of the power system operation quality and safety, frequency stability is to protect the power system safe and stable operation of the overall issues. The progressive realization of the regional interconnection of the power system, making the economy and reliability of the system has been significantly improved, but with the grid expansion of the scale and variety of new transmission technologies, increasingly complex network structure, the dynamic behavior of the power system has become more complex, the ability to maintain frequency stability of the system under large disturbances deteriorating, greatly increasing the possibility of stabilizing the damage accidents chain development. Therefore, the use of the system global information on the frequency of the power system stability analysis and control of the urgent need for the development of modern power system. The emergence of wide area measurement system to achieve a wide-area system operation and real-time synchronous measurement, with the help of high-speed communications network can also be measured phasor data summary, which created a global power system security monitoring and control good conditions. Wide area measurement system can provide real-time advantages of synchronous dynamic data, Wide Area Information instant access to the system after a fault in the the specific perturbed system steady-state frequency system to predict, so as to effectively take appropriate means to prevent the instability of the system frequency . In this paper, the frequency characteristics of the power system, introduction and analysis of the existing power system frequency stability analysis; wide area measurement system and its application in the power system status and prospects of research has been based on the widely domain measurements of power system frequency stability prediction; theoretical comparative analysis of the two stable prediction algorithm based on wide-area measurement frequency accuracy and complexity; stability prediction based on the frequency of the rectangular form of wide area measurement steady-state frequency prediction equation is proposed to improve based on wide-area measurement of power system frequency stability prediction fast algorithm, by the FORTRAN programming language and the Monte Carlo method for solving the proposed fast algorithm implemented in the the IEEE50 machine modify the test system to prove that the three high accuracy of the algorithm to solve fast; load model in power system design, analysis and control have an important impact, simulation studies based on wide-area measurement of power system frequency stability prediction under different load model program effectiveness; wide area measurement system makes the emergence of the power system information acquisition, transmission and processing to new heights at the same time, it also brings the problem can not be ignored: the WAMS there is a delay, simulation studies WAN measurement system communication delay of the three prediction algorithm based on wide-area measurement of power system frequency stability.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Power system stabilizer
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