基于综合评价模型的某变电站风险管理评价研究

本研究针对某变电站的风险管理问题,采用CRITIC模型和VIKOR模型2种方法进行评价。对市场风险、社会风险和建设风险等指标进行权重计算和排序,得出各风险管理方案的优劣。研究结果表明,第4套方案在风险管理中表现最出色,其次是第1套和第5套方案,而第2套和第3套方案的表现相对较差。结果为变电站的风险管理提供了有效的参考依据,有助于提高风险管理的针对性和有效性。在实际应用中,需要根据具体情况对各指标和模型进行细化和调整,以确保风险管理决策的有效性和实用性。

基于状态监测与变电站风险的断路器预防性维修决策

对断路器的维修策略进行研究,利用断路器操动机构二次侧分合闸线圈中电流、电压曲线以及辅助开关的动作时间,提出一种断路器状态评估方法;基于非参数核密度估计方法,计算出断路器状态的概率分布,更加全面地反映了断路器的实际状态;在此基础上,计算出断路器状态异常的概率,综合分析断路器的异常概率与断路器对变电站风险的影响,提出断路器维修决策方法,在兼顾断路器状态和变电站风险的情况下确定经济可靠的维修方式。该方法可以在提升系统可靠性的同时保证资源分配的经济性。

基于电鸿物联操作系统的变电物联数字生态体系构建

引言当前,我国正以建设清洁低碳、安全充裕、经济高效、供需协同、灵活智能的新型电力系统为着力点,推动新型能源体系建设。变电站作为电力系统不可或缺的部分,与电力系统共同发展了100多年。在传统的变电站运作过程中,通常需要人工对变电站中的一些辅助设备进行测量、控制、监视和运维,并根据设备上的相关数据进行计算,进而实现变电站风险的有效管控和预测,确保变电站可以更加安全、可靠地运行。

Risk Evaluation of Workers Exposure to Magnetic Fields in Indoor Distribution Substations

Due to possible health effects of electric and magnetic fields, a directive on minimum health and safety requirements regarding the exposure of workers to electromagnetic fields has been disposed by European Parliament and Council regarding the exposure of workers to electromagnetic fields. This legislation will be nationally implemented in 2012.The aim of this work was to develop a electromagnetic field exposure measurement method and further a magnetic field hazard evaluation method for exposure of workers in indoor medium to low voltage （MV/LV） distribution substations. Magnetic field exposure was also reflected with BS 8800 general risk classification procedure to accomplish specifications to execute magnetic field measurements and carry our risk assessment procedure for working tasks. The risk assessment procedure is based on magnetic field exposure measurements and dosimetric FEM calculations founded on EU Directive 2004/40/EC. According to field measurements action values were exceeded in several working tasks but limit values were not exceeded.