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As a content of smart grid construction, the construction of smart automatic voltage control (Smart AVC) is also necessary. The Smart AVC (S10) of power grid, which can provide coordination control for the security, economy, and good quality of voltage, is used to analyze and calculate the online voltage reactive power optimization and carry out the closed loop control. The application of S10 system...
In this paper a combination strategy for reactive power optimization is proposed. It bases on the optimal reasult of Genetic-Simulated Annealing Algorithm and Primal-Dual Interior Point(PDIP) Algorithm, and solves the problem of discrete and continuous control variables in reactive power optimization effectively. Simultaneity, it introduces the soft costraint to handle the infeasibility problem appearing...
With the own losses of negative sequence power of transformers, this paper introduced a new characteristic of transformer fault diagnosis based on the relative ratio losses of the negative sequence power. Through theoretical study and examples, it is demonstrated that the application of this method to transformer fault diagnosis is reasonable and feasible.
The paper analyzes distributed generation planning of capacity and location. Distributed generation usually installed in distribution system. Distributed generation such as solar generation and wind generation power output is affected by meteorological conditions. DG power production fluctuates frequently, DG injected distribution system is seldom dispatched and controlled by operators. Some control...
Combining with the characteristic of medium voltage power distribution grid, this paper puts forward a simplifying partition algorithm of reliability evaluation to medium voltage power distribution network. At first, the system is simplified; branch sub-feeder is made to be equivalent to an element, so the system is simplified. Then the construction method of adjacency matrix is presented. Finally,...
Reactive power optimization considering the load changing of the node in the system is also called as dynamic reactive power optimization. The paper presents a practical algorithm to solve the dynamic reactive power optimization based on the time-interval control, using the improved GA to optimize the discrete control variable and the predictor-corrector interior point method to the smooth control...
At the view of reducing grid loss and improving power quality and relying on the practical operating condition of power system, the intelligent grouping arithmetic used in Capacitor Optimal Configuration Programming Decision is able to provide optimal compensation capacity of reactive power compensation and voltage regulation under various operating conditions. Aiming at current investment budget...
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