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电气设备翻译—中英文对照

日期:2010-09-30 | 阅读:
PRS-711微机线路成套保护装置 PRS-711装置为微机实现的数字式高压线路快速保护装置,适用于110kV及以下电压等级、中性点直接接地、故障时三相跳闸能够满足系统稳定性要求的线路。 装

PRS-711微机线路成套保护装置
PRS-711装置为微机实现的数字式高压线路快速保护装置,适用于110kV及以下电压等级、中性点直接接地、故障时三相跳闸能够满足系统稳定性要求的线路。
装置保护的基本配置包括了完整的距离和零序保护,更可在此基础上配置纵联距离及纵联零序保护,用于要求全线速动的场合。装置可与专用收发信机配合,通过高频载波实现纵联保护;还可内置光端机,通过光纤通道实现纵联保护。各型装置均设有三相一次重合闸功能,自带跳合闸操作回路以及交流电压切换回路。
PRS-711装置采用先进的硬件平台和完善的软件设计,装置的软件功能配置灵活完备,纵联保护的通道接口方式设置可充分满足用户需要,且通信可靠性高,再加上强大的辅助功能支持,使整套保护装置具有更优异的性能。
PRS-711微机线路成套保护装置
PRS-711装置提供了丰富的保护元件,可根据用户需求进行配置。主要保护元件包括:
纵联距离保护/纵联零序保护
突变量距离继电器
四段相间距离/三段接地距离
四段零序方向过流/零序反时限过流
不对称故障相继速动/双回线相继速动保护
合闸于故障保护
弱馈线保护
振荡闭锁
电压断线检测和紧急状态保护
三相一次自动重合闸/检同期手合
滑差或无滑差闭锁低周减载/低压减载
过负荷保护
TA异常/角差异常/TWJ异常告警功能
 装置包含由超范围距离方向和零序方向元件构成的全线速动纵联保护,动作速度快,全线速断时间小于25ms。
 装置的两个CPU板具有独立的起动元件,两个起动元件均动作时整套保护装置才能出口,保护安全性高。
不受振荡影响,在系统振荡(无故障)时可靠不误动,在振荡中又发生故障时仍能保持保护动作的快速性与选择性。
不受弱馈侧安装的影响,具备在弱电源侧的正确保护功能。
在手动和自动合闸时有合闸于故障保护快速切除全线各种故障。
在TV断线时可投入可靠的紧急状态保护,确保装置性能。
装置采用高性能的平台设计,可靠性高,抗干扰能力强。
采用32位浮点DSP和16位高精度A/D采样,运算与逻辑功能强大。
单元化设计、模块化结构,可扩充性强。
大屏幕汉字彩色液晶显示、直观友好的界面菜单、完备的过程记录,信息详细直观,操作调试方便。
以高可靠性工业级器件为主体,采用自动监测、补偿技术提高硬件电路稳定性、可靠性。
封闭、加强型单元机箱,多层屏蔽等抗振动、抗强干扰设计。
充分发挥微机保护的优越性,具备丰富的辅助功能,体现人性化设计。
完善的事故分析功能,包括保护动作事件记录、故障起动记录、故障录波记录、装置运行记录、开入变位记录,及装置自检记录和闭锁记录等,可再现故障情况及故障时保护装置的动作行为。(装置可保存最新的128次动作事件记录和32次录波记录。)
灵活的后台通信方式:三个TCP/IP以太网接口,两个RS485接口,两个CANBUS接口,一个串行打印口,一个GPS脉冲接入口(差分输入或空接点输入,对秒、分脉冲和IRIG-B串行编码三种校时方式自适应)。支持电力行业标准IEC60870-5-103规约。通讯速率可整定。
纵联保护通道说明
装置的纵联保护能同各种通道通信设备(继电保护专用收发信机及复用载波机等)接口。发、停信控制采用一副接点,不发信即为停信。当用于专用闭锁式时,通道逻辑由保护装置实现,收发信机的停信和发信完全由保护控制。
装置的纵联保护的收发信还可以通过光纤通道实现,用于允许式保护。保护装置与光纤通道相连实现方案有两种,一是采用接点方式,同时外配光纤接口装置,保护装置收发信节点与光纤接口装置相连实现收发信功能;二是增加内置光纤接口板,直接与光纤通道相连。


PRS-711 Microcomputer-based Line Whole-set Protection Device
PRS-711 device is microcomputer controlled fast protection device for digital high voltage lines, which is applicable for lines with the voltage grade equals to and below 110kV, neutral point direct earthing, and three-phase tripping when fault occurs to keep the stability of the system.

The basic configuration of device protection includes whole distance and zero sequence protection, and the configuration of distance pilot protection and zero sequence pilot protection is available for whole line quick-acting required occasions. Together with dedicated transreceiver, the device can achieve pilot protection though high frequency carrier; it can also build the optical transmitter and receiver inside, and achieve pilot protection through fiber channel. All types of devices have three phase one shot reclosure function, and with tripping and closing control circuit and AC voltage switching circuit.

PRS-711 device adopts advanced hardware platform and perfect software design, the software function configuration of the device is flexible and complete, the interface mode setting of the pilot protection channel can fully meet the customer’s requirements, the communication is very reliable, and supported with powerful auxiliary functions, all of which provide the whole protection device with more excellent performance.
PRS-711 Microcomputer-based Line Whole-set Protection Device
PRS-711 device provides a variety of protection elements, which can be configured according to customer’s requirements. The primary protection elements include:
Distance pilot protection/Zero sequence pilot protection
Variation distance relay
Four-zone phase-to-phase distance/Three-zone earth distance
Four-zone zero sequence directional over-current/Zero sequence inverse time over-current
Unsymmetrical fault sequent quick-acting/Double lines sequent quick-acting protection       
Switch onto fault protection
Weak feeder protection
Power swing
Voltage break detection and emergency state protection
Three phase one shot automatic reclosure/Synchronism check manual close
Slip or no slip lock low frequency load shedding/under voltage load shedding
Over load protection
TA abnormal/angular difference abnormal/TWJ abnormal warning function

The device has whole line quick-acting pilot protection consists of overrange range direction and zero sequence direction elements, which is quick-acting, and the quick break time of the whole line is less than 25ms.
Two CPU plates of the device have independent starting elements, only both starting components are active, the whole protection device opens, so the protection is of high security.
Not affected by oscillation, no false operation at system oscillation (no fault), and can still keep the rapidity and selectivity of the protection action when fault occurs again in oscillation.
Not affected by the installation of weak feed backside, with right protection function for the week power backside.
The switch onto fault protection removes all faults of the whole line rapidly when switching on manually and automatically.
Can input reliable emergency state protection at TV breaking time to ensure the performance of the device.
The device is designed with high performance platform, with high reliability and powerful anti-interference capability. Sampling with 32 bits floating point DSP and 16 bits high precision A/D, and has powerful calculation and logic function.
 Unitized design, modular structure, with high expandability.
 Large-screen Chinese character color liquid crystal display, intuitive and friendly interface menu, complete process record, intuitive detailed information, and convenient operation and debugging.
 With high reliability industrial level devices as the main body, adopts automatic monitoring and compensation technology to improve the stability and reliability of the hardware circuit.
Close and reinforced unit chasis, multilayer screen, etc. anti-vibration and anti strong interference design.
Give full play to the superiority of microcomputer protection, with a variety of auxiliary functions, and reflects the humanized design.
 Perfect fault analysis function, including the protection of action event records, fault starting records, fault recording records, device operation records, opening-inserting phase change records, device self inspection records, and lock records, etc., can reappear the status of the fault and the action of the protection device at the fault time. (the device can store the latest 128 action event records and 32 recording records.)
Flexible background communication mode: three TCP/IP Ethernet interfaces, two RS485 interfaces, one CANBUS interfaces, one serial print interface, one GPS pulse access interface (differential input or idle contact input, self-adapting to the three timing modes, namely PPS, PPM, and IRIG-B serial code). Supports IEC60870-5-103 standard of the power industry. The communication speed can be set.
Introduction of Pilot Protection Channel
The pilot protection of the device can connect with all kinds of channel communication devices (dedicated transreceivers and multiplex carriers for relay protection). Sending and stopping control with one contact point, and not send is stop. When applied to the dedicated lock mode, channel logic is achieved by the protection device, and the stopping and sending of the transreceiver is completely controlled by the protection.

The pilot protection sending and receiving of the device can also be achieved though fiber channel, which is available for permissive protection. There are two solutions for the connection between the protection device and the fiber channel, one of which is the connection point mode, meanwhile, equips with optical interface devices, connects the receiving and sending connection of the protection device with the optical interface device to realize the receiving and sending function; the other is adding built-in optical interface plates to connect directly with the fiber channel.
 

 

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