Development of a WAMS based test platform for power system real time transient stability detection and control

Abstract

The real-time transient stability detection and emergency control technology based on wide area response has become a hot research area in power system stability studies. Several different technologies have been proposed, but lots of problems remain to be solved before they can be applied in practice. A wide area measurement system (WAMS) based test platform is developed for transient stability detection and control. The design as well as main function modules of the platform are introduced. In addition, three generator power angle prediction methods and six response based transient instability detection technologies are given. Results of engineering application demonstrate that the developed test platform can provide a real-time operation environment, which can effectively compare and analyze the validity and practicability of these transient stability detection technologies. Based on the measured perturbed trajectories from actual power systems or the Real-Time Digital Simulators (RTDS), the platform can realize the assessment and visual result presentation of various responses from different transient instability detection technologies. The test platform can be applied to different power systems and it is convenient to embed new transient instability detection modules. Meanwhile some deficiencies and shortcomings in engineering application are pointed out and corresponding suggestions are given. In conclusion, the hardware and software structure, function modulus and engineering applications are presented. The application in actual power systems shows that it has a good application perspective.

A novel algorithm of regional backup protection using adaptive current protection suiting factor

“…With the development of wide-area communications technology, the adaptive current protection based on wide-area information has become possible. 14,15 However, the reliability of communications is still restricting the realization of regional backup protection. 16,17 It remains a difficulty in the backup protection research as to using the multisource information for reliable fault identification in the case of abnormal communications.…”

“…In the early stages of microcomputer protection development, research on the adaptive current protection mainly applies local information for value setting. With the development of wide‐area communications technology, the adaptive current protection based on wide‐area information has become possible . However, the reliability of communications is still restricting the realization of regional backup protection .…”

Dynamic Synchronous Phasor Measurement Algorithm Based on Compressed Sensing

“…As an important platform for a real-time estimation and the dynamic monitoring of the smart grid status, wide area measurement systems (WAMS) have been widely used in power system security and stability control, system parameter identification, and fault analysis [9]. The core of WAMS is the phasor measurement unit (PMU) based on global positioning technology, which can realize the synchronous transmission, measurement, and analysis of phasors in the power system.…”

Nonlinear Synergetic Governor Controllers for Steam Turbine Generators to Enhance Power System Stability

“…Maintaining the stability of the power system under various disturbances is one of the critical issues of concern for the power operators, especially for the power system integration of bulk renewable energy [1][2][3][4][5][6][7]. One of the most traditional methods to improve the stability of the power system under both small and large disturbances is through designing advanced controllers for the excitation system [8][9][10][11][12][13].…”