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Corresponding Author

Moamen M. Mousa

Subject Area

Electrical Engineering

Article Type

Original Study

Abstract

Abstract—Efficient power system stability monitoring plays a vital role in recent electric grid technologies. It supports operators at control centers to reduce overloading on weak elements and prevent power system from collapse. In this paper Phasor Measurement Units (PMUs) technology has been used for real-time measurements that can obtain fast and accurate data samples from the electric network. The system stability responses during steady state and transient conditions have been studied based on the data driven from PMUs. The proposed study has been applied on WSCC 9-bus system. Test system Simulink has been modified to include the required PMUs and other necessary measuring devices. Trusted six voltage stability indices have been estimated. Consequently, the lines and buses have been ranked as per its weakness and the voltage stability margin became clear to control center operators. The main objective of this paper is to use these indices as an efficient awareness tool to the operator and aims to avoid collapse and to support in taking necessary remedial actions such as installing FACTS. In addition, Three Power System Stabilizers (PSSs) effect on the network voltage stability, rotor angle stability and frequency stability has been carried out; As a result, MB-PSS is found as the most reliable one. By investigating the generators response, the fault location has been predicted. It has been approved from analysis to the results that MB-PSS shorten the stability recovery time from 6 sec to 2 sec and keep voltage within limits during fault condition for longer time. MATLAB Simpower System toolbox has been used for load flow, transient, and steady state stability analysis.

Keywords

Phasor measurement units; steady state stability; transient stability; Power System Stabilizer;

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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