Title :
Simulation and realization of closed loop control system of SSSC based on RTDS
Author :
Xu, Wei ; Xiao, Xiangning ; Chen, Jinmeng
Author_Institution :
HVDC Div., Beijing Sifang Autom. Co., Ltd., Beijing, China
Abstract :
Static Synchronous Series Compensator(SSSC)which is regarded as a newly developed FACTS equipment with extensive applying prospects has received more and more attentions recently. This paper has adopted three single phase of cascaded converter as the main circuit of SSSC and SVPWM based on KL coordinates as the modulation algorithm. Considering the characteristics of main circuit structure and SSSC function,a method was proposed to control cascaded converter by DSP+FPGA aiming at supplying enough PWM pulses because there are many switch components in multi-level converter. The present paper introduced the functional module configuration of the whole closed loop control system from two aspects of hardware platform design and software control algorithms realization. Finally in the present paper the SSSC controller were testified to be effective by simulation results in which the external electric power system and the main circuit of SSSC converter were simulated in RTDS while the controller adopted the hardware connection method of DSP+FPGA.
Keywords :
PWM power convertors; circuit simulation; closed loop systems; digital signal processing chips; digital simulation; field programmable gate arrays; flexible AC transmission systems; static VAr compensators; DSP; FACTS equipment; FPGA; RTDS; SSSC; SVPWM; cascaded converter; closed loop control; hardware platform design; modulation algorithm; real time digital simulator; software control algorithm; static synchronous series compensator; Capacitors; Converters; Digital signal processing; Field programmable gate arrays; Space vector pulse width modulation; Switches; DSP; FPGA; H-bridge cascade; RTDS; SSSC; multi-level SVPWM;
Conference_Titel :
Electricity Distribution (CICED), 2010 China International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-0066-8