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Commutation failure is one of the common faults in HVDC system, which has an adverse impact on the safe operation of the entire power system. Fast and accurate diagnosis for commutation failure plays an important role in controlling the commutation failure. Firstly this paper introduces the concept of HVDC system and situation of research on commutation failure fault diagnosis, in which the shortcomings...
This paper is to further explore the information of alarm in substation, and to improve the efficiency and accuracy of association rules. It comes up with a mining method of association rule based on alarm ontology, and builds up a model of it. This method divides the alarm into 6 top concept and 13 bottom concept on the basis of the construction knowledge of ontology, the information generalization...
This paper describes the hybrid characteristic of HVDC control system, which consists of continuous dynamic behaviors and discrete event behaviors. A powerful modeling tool for hybrid system-hybrid Petri net (HPN) is introduced to model HVDC control system. The proposed model consists of discrete logic layer and continuous layer. The layers are connected by a state identification interface. The discrete...
As power system restoration (PSR) is a multi-variable, multi-objective, multi-constrained nonlinear optimization problem, it is difficult to establish mathematical model. Hence, a new distributed model for PSR is proposed in this paper by combing multi-agent technology (MAT) with ant colony optimization algorithm (ACOA). The proposed model consists of a number of bus intelligent agents (BIAGs) and...
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