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Research on60KV Supply Network Power Flow Control of SSSC Device

Author: WangJing
Tutor: WangYuFeng
School: Liaoning Technical University
Course: Motor and electrical
Keywords: FACTS Static Synchronous Series Compensator decoupling strategy SVPWM control algorithm
CLC: TM761
Type: Master's thesis
Year: 2013
Downloads: 5
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Abstract


At present, along with the extensive application of the non-linear power electronic devicesand the increasing power load, the stable supply of power system has become an urgent problem,and the trend of the supply network control in the stable power system holds an weightliftingweight status. At present, there are many methods on power float control, but as power gridinterconnection in our country, power gradually moving towards intelligent, these methods areno longer adapted to the new structure of electric power network.Flexible AC TransmissionSystem, FACTS technology for its flexibility and flexibility characteristics are widely applied,FACTS devices have high tide and controllable voltage in grid power flow control, StaticSynchronous Series Compensator, SSSC as a family of FACTS controllers, can directly controlgrid voltage and phase angle, to achieve rapid control system trend. Although the theoreticalstudy on SSSC has been at the mature stage at our country and abroad, but the device is appliedto the actual trend of real-time control of the power grid is still at the empty stage.This paper, mainly on60kV power supply network power flow control. Take use of theSSSC device efficient reactive power compensation and trend regulating the performance toachieve for the trend of transformation of the grid. In this paper, firstly discussed the SSSCdevice works and topology, and Simply introduce the SSSC device several compensation mode,and selection of the constant impedance compensation mode as this article SSSC device control,Park transform to the abc stationary coordinate system of mathematical model, and finally getthe rotating coordinate system of the mathematical model. In the d-q coordinates, the modelexists coupling relationship, this article select the cross decoupling method to decouple for themathematical model,in order to get the required voltage of the inverter, finally obtain the twoparameters phase angle and amplitude of SSSC controls, also gain the VSC switching devicedriver signal through SVPWM control algorithm. So that the SSSC means outputs the offsetvoltage of the system requires. Finally, take the system simulation in MATLAB environment.The simulation results demonstrate the effectiveness and feasibility of the device.Finally, we conducted a test of the device under the power system model in the laboratory,the ideal test results confirmed the practical value of the device.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Automatically adjusts
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