Node placement method by considering operation mode change and common influence of multiple SVCs (Static Var Compensators) to system

• Main Authors: YI JUN, WANG GANG, ZENG BING, XIONG CHUANPING, WANG HONGYIN, HU YANGYU, TANG YONG, XIONG HAOQING, FU HONGJUN
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2012
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention provides a node placement method by considering operation mode change and the common influence of multiple SVCs (Static Var Compensators) to a system. According to the invention, a multi-SVC node placement method for expanding a static voltage stability boundary is established on the basis of information provided by a secondary-order analytic solution of a perturbation equation by utilizing a normative analysis method. In the node placement process, firstly, a dangerous operation mode (i.e., an operation way for almost causing system voltage collapse) of the system is determined according to a static voltage stability analysis method; then, aiming at the perturbation equation, the system is subjected to small disturbance voltage stability analysis under such an operation mode by using a normative method to obtain analytic solutions of voltage oscillation curves of all PQ nodes; and finally, a multi-SVC node placement result is given by taking the contribution of various multi-SVC node placement