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Insulators are very important in the power system. The fault caused by insulator flashover is in second place of the insulator fault. In this paper, the insulator surface dirt image detection technology using the improved watershed image segmentation is introduced. The experimental result shows that this method can be applied to the insulator online monitoring system in power transmission system.
Since the way of arc-suppression coil grounding 10kV distribution network is in a high proportion. This paper study on the operation of the three types of arc-suppression coils, including phase control type, turns adjusting type, capacitive adjusting type, in 10kV distribution network. According to the typical parameters of the 10kV distribution network of 110kV substation, the EMTP-ATP was utilized...
This paper built a model of tractive power supply system, analysed the influence on signal cables due to tractive power supply system through the software ATP-EMTP and found out influencing factors of the induced voltage in signal cable core of railway system. Simulation shows that: Structure and size of signal cable, earthing methods and earth resistance of the signal cable sheath are three of the...
Simulations are given for the anti-rolling effects between fin stabilizer, anti-rolling tank control, and fin/anti-roll tank combined stabilization. Results show that the last design strategy gives much better performance than the two single dynamics strategies (fin or anti-roll tank), and can provide us a full-condition anti-rolling system. The nonlinearity and randomicity of the ship rolling motivates...
In this paper, a design mode of expert system for insulation states on high voltage electric equipments is presented. The paper describes the blackboard structure and introduces it to expert system, which can help to make operation decisions for the related personals. This paper elaborates the work mechanism and implementation procedure of the expert system in detail, take the system being used by...
The secondary voltage control (SVC) of power systems initiated by EDF has been developed successfully to improve power-system voltage stability. And, with the development of agent technique, multi-agent system (MAS) has been applied in SVC to maintain the system voltage more stable. The models established in previous papers on MAS based secondary voltage control with no sharing resources and information...
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