Analytical method to improve dynamic voltage stability in power system
The dynamic response behavior of power system voltage is strongly dependent on the dynamic characteristics of load and var supply equipment as well as on the power system configuration, characteristics of automatic voltage control, regulator (AVR), static load characteristics etc. This paper first proposes an analytical model which considers all of these factors, and then uses it to analyze the effect of dynamic characteristics of load on the dynamic voltage variation behavior. Main conclusions drawn from this study are that: results of the simulation study indicate that the dynamic voltage stability of power system is greatly dependent on the dynamic response characteristics of load, and we should endeavor to collect more information on the dynamic characteristics of load; Static Var System (SVS) is very useful for securing voltage stability; a linear programming method has been proposed to determine the optimal allocation of SVS. In the power system consisting of a trunk ring line with radial type subtransmission lines, it is most effective to install SVS at intermediate branching nodes where the subtransmission lines are branched from the trunk ring line; and a practical method for designing optimal parameters of a SVS control system has been proposed.
- OSTI ID:
- 6547507
- Journal Information:
- Electr. Eng. Jpn. (Engl. Transl.); (United States), Journal Name: Electr. Eng. Jpn. (Engl. Transl.); (United States) Vol. 101:3; ISSN EENJA
- Country of Publication:
- United States
- Language:
- English
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