利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN107769176A 一种基于分层控制的直流微网自适应保护方法及系统 无效 - 驳回

一种基于分层控制的直流微网自适应保护方法及系统
摘要：
本发明提供了一种基于分层控制的直流微网自适应保护方法及系统，其中方法包括：S1、微网层保护装置检测直流微网中故障事件的发生，对第一运行方式参数进行更新，得到第二运行方式参数；S2、微网层保护装置根据第二运行方式参数，计算微网保护整定值，并将微网保护整定值发送至与微网层保护装置连接的所有本地层保护装置；S3、本地层保护装置将微网保护整定值作为本地保护整定值进行本地保护整定值的更新；S4、本地层保护装置获取流过本地层保护装置的电流值和电压值，并计算电流变化率和电压变化率；S5、本地层保护装置根据本地保护整定值、电流变化率、电压变化率、电流值和电压值，判断直流微网中本地的故障类型。
摘要（英）：

The invention provides a direct-current micro-grid self-adaptive protection method and system based on hierarchical control. The method comprises the steps that 1, a micro-grid layer protection devicedetects fault events in a direct-current micro-grid and updates first running mode parameters, so that second running mode parameters are obtained; 2, the micro-grid layer protection device calculates a micro-grid protection setting value according to the second running mode parameters, sends the micro-grid protection setting value to all local layer protection devices which are connected with the micro-grid layer protection device; 3, the local layer protection devices set the micro-grid setting value as the local protection setting value, and thus updating of the local protection setting value is conducted; 4, the local layer protection devices acquire values of currents and voltages which pass through the local layer protection devices and calculate the current change rate and the voltage change rate; 4, the local layer protection devices judge local fault types in the direct-current micro-grid according to the local protection setting value, the current change rate, the voltage change rate, the current values and the voltage values.

0/0