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Combined with the characteristics of smart substation, the power grid fault diagnosis structure of double layer independent decision based on Smart substation-Dispatching center is put forward. Smart substation diagnosis module is designed based on panoramic information platform, through analyzing three-state-data, using the numerical analysis method, the fault equipment is identified, and the fault...
Wind generation rapid development has brought challenge to the grid. Reactive voltage is the most outstanding and one of the most concerned problems. This paper introduces the concept of wind farms reactive power compensation and wind power grid code with respect to reactive power regulation all over the world, gives the simplified approach to estimate reactive power compensation capacity, and validates...
Safety and economic operation in power system is the most important issue for the power industry. Combination of distributed generation into large power grids is considered as the development tendency, however the active power dispatching considering intermittent energy is the bottleneck for the renewable energy integration. This paper comprehensively overviews the dynamic active power scheduling...
Fault diagnosis is the basic condition for smart grid to achieve the self-healing function, and it is also one of the important research topics of the intelligent dispatching decision support system. On the basis of analyzing its concept and aiming at the current status of China's studies, this paper reviewed and summarized several intelligent fault diagnosis methods, including expert system, artificial...
To solve the uncertain problems existing in power grid fault diagnosis, on the base of fault diagnosis expert system based on rules and causal logic, a method of Bayesian statistics inference is proposed in this paper , through the analysis of historical data, the diagnosis system gets a general memory function; meanwhile, introducing case-based reasoning (CBR), establishing a special case library,...
The main current research achievements for power system diagnoses are summarized, a practical power grid fault diagnosis method base on China's power grid actual is proposed in this paper. Through the analysis of the power flow difference between normal operation and fault tripping, a fault equipment confirmed algorithm based on abnormal changes in the structure of power grid is developed, the evaluation...
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