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产品介绍
RET620 变压器保护测控装置，构成双绕组电力变压器和功率发电机变压器组的差动主保护。RET620 还包括一个可选自动化电压调节功能，和在线分接开关配用。对于带一个或两个断路器及多个投切开关的单母线或双母线的各种 Y-Δ 连接方式的变压器，RET620 同样适用。装置支持大量手动和电动隔离开关及接地开关操作。可控设备的数量取决于其他应用的输入和输出需求。可用 I/O 的数量根据 ABB 的 RIO600 远程 I/O 装置的需要而增加。 RET620 变压器保护测控装置以支持变电站 IEC61850 通信标准为特点，支持的通信涵盖纵向和横向通信，横向通信包含带开关量信号和模拟量信号的 GOOSE 报文以及基于 IEC 61850-8-1 的定值整定。装置还支持 DNP3、IEC 60870-5-103 和 Modbus® 规约。通过 PRP 或 HSR 规约，RET620 在通信故障时为无延时的冗余以太网提供可选以太网口或提供一个自愈 RSTP 环网通信。该解决方案消除了单点故障影响，并提高了通信可靠性。适用于基于以太网的 IEC 61850, Modbus® 和 DNP3 规约。 RET620 变压器保护测控装置是 ABB 的 Relion® 产品家族中 620 系列的成员。 主要优势 • 一台继电保护装置集成了保护、控制、测量和监视功能 • 为双绕组变压器提供全面的保护和控制功能 • 具有预配置好的的标准配置，亦可通过功能配置快速简便地满足不同的应用需求 • 快速安装和测试的可插拔式设计 • 带可编辑单线图的大液晶显示，可通过本地或基于 Web 浏览器的易于使用的 HMI 来访问 • 周到的产品全生命周期服务 主要特性 • 全面的变压器保护控制功能，适用于双绕组变压器，包括带涌流制动的先进快速的差动保护 • 支持各种中性点接地方式，具备高阻抗或低阻抗限制性接地故障原理 • 可选择的变压器自动有载调压功能 • 可选的弧光保护功能 • 支持 IEC61850 第一版和第二版，包括冗余 HSR 和 PRP, GOOSE 和 IEC61850-9-2 • 支持 Modbus、DNP3，IEC 60870-5-103 通信协议和不同时间同步的方法，包括 IEEE 1588 v2 的精密时间协议
RET620 transformer protection measurement and control device constitutes differential main protection of double-winding power transformer and power generator transformer group. The RET620 also includes an optional automatic voltage regulation function and in-line tap-changer. The RET620 is also suitable for transformers of all Y-Δ connections with single or double buses with one or two circuit breakers and multiple switch switches. The device supports a wide range of manual and electric disconnecting switches and ground switches. The number of controllable devices depends on the input and output requirements of other applications. The amount of available I/O is increased according to the needs of ABB’s RIO600 remote I/O device. The RET620 transformer protection measurement and control device features support for the substation IEC61850 communication standard, which covers vertical and horizontal communication, including GOOSE messages with switching signals and analog signals, as well as setting values based on IEC 61850-8-1. The device also supports DNP3, IEC 60870-5-103, and Modbus® protocols. Through PRP or HSR protocols, the RET620 provides an optional Ethernet interface for redundant Ethernet without delay or a self-healing RSTP ring network communication in the event of a communication failure. The solution eliminates the effects of a single point of failure and improves communication reliability. Applicable to Ethernet-based IEC 61850, Modbus® and DNP3 protocols. The RET620 transformer protection measurement and control device is a member of the 620 series of ABB’s Relion® product family. Key advantages • One relay protection unit integrates protection, control, measurement and monitoring functions • Provides comprehensive protection and control functions for double-winding transformers • Features pre-configured standard configurations, Can also be quickly and easily configured to meet different application requirements • Pluggable design for quick installation and testing • Large LCD display with editable single line chart, Accessible via local or Web browser-based easy-to-use HMI • Thoughtful product lifecycle service Key features • Comprehensive transformer protection control for dual winding transformers including advanced fast differential protection with inrush current braking • Support for various neutral ground modes, With high or low impedance limited ground fault principle • Optional transformer automatic on-load voltage regulation • Optional arc protection • IEC61850 1st and 2nd editions supported Including redundant HSR and PRP, GOOSE and IEC61850-9-2 • Support for Modbus, DNP3, IEC 60870-5-103 communication protocols and methods for different time synchronization, including IEEE 1588 v2’s Precision Time Protocol
