The Research Of TCSC For Improving The Power Limit Under Transient Conditions In The Shannxi Power System Of China

This paper in view of the Shanxi power system from North Shanxi to the Guanzhong power transmission engineering in affects south the electricity as a result of the transition condition stability problem to deliver the transmission power the actual situation, using FACTS technology, enhances the stability limit by the researching TCSC.The work includes the following parts:1.According to the TCSC basic structure and movement way research, obtains the TCSC fundamental wave impedance by infer the mathematical model of TCSC with the time domain method;2. Analysis the advantage and disadvantage of three kinds TCSC tidal current computation model, obtains the iterative algorithm to include the TCSC electrical power system tidal current computation model alternately;3. By the research of the TCSC damping characteristic and analysis the existing control technology and the stable computation model of TCSC, obtains the TCSC transition condition stable computation model with PID control algorithm;4. Using the TCSC tidal current computation model, considered electrical power system analysis assembly program (PSASP), programming the TCSC system tidal current interface routine compilation by FORTRAN;5. In a four machine two regional system, through installed around the TCSC installment to the system line to carry on the simulation computation separately, confirmed the validity of the tidal current computation model and the PID control model that used in this article used.6. In the Shanxi electrical network system, using the PID controlled variable grouping choices way, searching for the ideal PID controller parameter in not forced the link separately and includes forces the link models, obtains the most superior control policy finally.