Impact Analysis Of Human Factors On Power System Operation Reliability

Along with the advancement of strong smart grid strategy, power systems develop towards high voltage, large capacity and area interconnection. Since the blackout accident are always followed by enormous loss of economy and society, it has a higher demand on power system reliability. How to further improve power system reliability and reduce accidents is an essential research aspects. Analysis of power grid accidents shows that human errors and peoples’ unsafe behaviors have a significant impact on power system reliability. However, research on human factors has not obtained enough attention that it deserves.Impact analysis of human factors on power system reliability mainly research the probability of human errors and the influence on power system. This paper introduces current situation of human factors in power systems and propose several analysis methods according to specified situations. On this base, we analyze the impact of human factors on electrical equipment maintenance and power systems dispatch operation. Finally, a novel dispatcher training evaluation simulation system (DASS) based on IDAC is established, which could be used for dispatcher assessment and improve power grid dispatch reliability.1. Through analyzing human errors and operation scenarios in power systems, we established human factor models and proposed 3 human reliability analysis methods. Since these methods are based on practical characteristics of power system operation scenarios, they are suitable for power systems, and they are verified by some power system practical cases.2. We analyzed the impact of human factors on maintenance. Electrical equipment maintenance could not be always perfect due to human errors, and maintenance availability might be affected a lot. So it is necessary to take human factors into consideration when determining maintenance policy.3. We analyze the impact of human errors on emergency dispatch. Analysis and evaluation results demonstrate that it could avoid cascading failures and reduce power loss by improving human operation reliability.4. Based on ID AC, we propose a framework of dispatcher assessment simulation system (DASS), which could be used as a tool for dispatcher training simulation. It could take all the influencing factors into account, and make a comprehensive assessment of dispatchers. With DASS we can find out operators’ shortcomings and improve dispatch reliabilityAs a noteworthy issue, human reliability analysis in power systems deserves more attention. We should take further researches on how to quantify human error probability, the influence of human factors on power system, and what measures should we take to reduce human errors and enhance power system reliability.