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Study on SVS Control Strategy for Low Voltage Ride Through in Wind Farm

Author: CuiHongWei
Tutor: ZhangFuMin
School: Hebei University of Technology
Course: Electrical Engineering
Keywords: Low voltage ride through Parallel reactive power compensation system Voltage collapse Coordinated control
CLC: TM761.1
Type: Master's thesis
Year: 2011
Downloads: 101
Quote: 0
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Abstract


With the rapid development of wind power in recent years , the proportion of wind power in the electrical energy is growing , and the impact of its power grid also been important . How to keep the grid grid voltage sag , wind turbines , and be able to support the grid voltage recovery , become a research hotspot . TSC, SVC and STATCOM for reactive power compensation and voltage adjustment device . This topic for STATCOM low performance superior dynamic response speed and smaller contradictions rated compensation capacity , combined with TSC and SVC larger capacity and ability to compensate for the lower terminal voltage dropped , TSC, SVC STATCOM consisting the tricyclic compensated running parallel reactive power compensation system ( SVS ) . Thesis the TSC, SVC and STATCOM based , gives the SVS circuit topology , mathematical model and analysis of its working principle and operating characteristics . The paper presents a combination of control strategies for maintaining and outlets bus voltage constant and prevent voltage collapse for the basic design of the control algorithm to compensate for reactive coordinated allocation of tricyclic classic PI control thought , and on this basis , the use of fuzzy control theory improve system response speed and control precision . The paper establishes a system-level simulation model to prove that the the proposed SVS mixing device has good reactive compensation effect , can effectively enhance the ability of low voltage ride through for wind farms .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Automatically adjusts > Automatic adjustment of voltage and reactive power
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