【摘要】 针对中低压配电网中有大量多级短分支、环网供电线路和T型接线的特点,提出了一种新型的网络式自适应电流保护的原理,采用通信技术与自适应电流整定相结合的方法,保证了保护动作的选择性,解决了配电网中传统的三段式电流保护难以解决的选择性和保护范围受故障类型影响的问题。更多还原

【Abstract】 According to the features of many multilevel short line branches, round-type power supply lines and T-type connections in distribution network, the principle of a new network-based adaptive current protection is proposed. Using the combination of communication technology with adaptive setting of current protection, the selectivity of tripping can be ensured and the problem which is difficult to be solve, i.e., the selectivity and the protection region of traditional three-step current protection are influenced by failure modes in distribution network, is solved.更多还原