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Based on an advanced distributed real-time platform named Real-Time Laboratory (RT-LAB), the impacts of the static synchronous compensator (STATCOM) on wind power system dynamics is studied in this paper. Firstly, a small-scale wind farm model based on squirrel-cage induction generator (SCIG) is built in MATLABTM/Simulink environment. This model is then rebuilt to be suitable for the real-time operation...
This letter presents a novel method to determine the weight coefficient existing in the model of network reconfiguration during power system restoration. The data envelopment analysis (DEA) method incorporating preference information is employed to implement the modeling and evaluation of the weight coefficient with respect to each transmission line. Some practical factors involving line charging...
This paper develops an intelligent decision-making model for network reconfiguration during power system restoration. The goal of the proposed model is to find the shortest restored weighted energized paths for units start-up or load recovery, and a weight coefficient is introduced to comprehensively asses the power line to be energized. The Data Envelopment Analysis (DEA) method with preference information...
A search strategy for identifying chains of events during power system cascading failure is proposed in this paper. This strategy corresponds to the study of overload of power lines and protective relaying hidden failures. By applying optimal power flow (OPF) technique to implement the optimal active and reactive power dispatching, and accordingly reduce the load losses caused by cascading events...
How to identify the weak buses comprehensively and practically in power system voltage stability analysis is an important issue, and is posing great interests to the power engineers. In this paper, a multi-criteria integrated voltage stability index was proposed for weak buses identification. Firstly, the bus voltage change index and reactive power margins, which were determined by P-V curve and Q-V...
This paper presents a new control strategy for superconducting magnetic energy storage (SMES). The control strategy fully utilizes the flexibility of SMES in exchanging active and reactive powers with power systems in four quadrants to control tie-line power flow. The objective is to synchronize centre of inertial of sending and receiving subsystem under transient conditions and quickly damp post-fault...
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