船舶高压电力系统常见中性点接地法的辨析 电气工程专业

摘 要目前船舶电气设备功率的日益增加，系统复杂程度、智能化程度、自动化程度的提高及其科学技术水平得到了空前的发展，低压系统已经不能满足船舶总功率增加的需要，采用高压电力系统对船舶供电已是大型船舶电力系统发展的必然趋势。船舶高压系统提高了船员专业技能水平的标准，船员必须能够在最短的时间内对故障做出迅速反应并且采取最有效的处理措施，才能有效减少各项损失。目前研究船舶高压电力系统中性点接地方式是需要解决的关键技术问题。本文通过分析对比中性点接地方式的原理，得出中性点经电阻接地的系统在投资方面更经济，在供电方面可靠性更高，接触电压小，跨步电压对人员的安全威胁小，维护工作较少，设备绝缘程度高，可以通过阻值调节电弧接地故障过电压数值，对通信线路的干扰弱，系统更稳定，更适合被应用于现代大型船舶电力系统的中性点接地。关键词：船舶高压电力系统，中性点，接地方式AbstractAt present, the power of the electrical equipment of the ship is increasing, the complexity of the system, the degree of intelligence, the improvement of the degree of automation and the level of its science and technology have been developed unprecedentedly. The components of the low voltage power station can not meet the need of the increase of the total power of the ship, and also improve the standard of the professional skill level of the ship crew. The crew must be able to respond quickly to failures in the shortest possible time and take the most effective measures to effectively reduce the losses. At present, what kind of grounding method is adopted in the neutral point of China's marine high voltage power system is the key technical problem we need to solve.In this paper, the characteristics of different grounding systems are analyzed in detail. By analyzing and comparing the principle of neutral grounding, advantages and disadvantages, plus its practical scope. After comparing and analyzing the characteristics and advantages and disadvantages...