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阿爾斯通 LGPG111 Relay 繼電器歐美進(jìn)口

一、產(chǎn)品概述

阿爾斯通LGPG111 Relay繼電器是一款多功能數(shù)字式發(fā)電機(jī)綜合保護(hù)繼電器，它將多種發(fā)電機(jī)保護(hù)功能及相關(guān)布陣邏輯綜合于同一繼電器外殼中。該繼電器采用數(shù)字技術(shù)，通過模一數(shù)轉(zhuǎn)換電路將模擬量信號轉(zhuǎn)換成數(shù)字量數(shù)據(jù)，并利用強(qiáng)大的微處理器進(jìn)行數(shù)字信號處理和執(zhí)行各種保護(hù)算法。

二、主要功能

LGPG111繼電器具有多種獨(dú)立的發(fā)電機(jī)保護(hù)功能，包括但不限于：

• 發(fā)電機(jī)差動保護(hù)功能（87G）：用于保護(hù)相問或三相定子繞組故障。
• 定子接地故障保護(hù)功能（51N）：反應(yīng)電流變化而動作，用于靈敏接地的發(fā)電機(jī)或裝有一個電阻接地的變壓器。
• 中性點偏移保護(hù)功能（59N）：反應(yīng)電壓變化而動作，用于檢測發(fā)電機(jī)上定子繞組的接地故障。
• 與電壓有關(guān)的過電流保護(hù)功能（51V）：用于系統(tǒng)的后備保護(hù)。
• 逆功率（32R）和正向低功率（32L）保護(hù)功能：用于檢測原動機(jī)的損耗。
• 負(fù)相序保護(hù)功能（46）：用于檢測持續(xù)的不平衡負(fù)載狀況。
• 磁場故障保護(hù)（40）：反應(yīng)發(fā)電機(jī)失磁故障。

此外，該繼電器還提供欠壓、過壓、欠頻率、過頻率等保護(hù)功能，以及電壓平衡功能等附加輔助功能。

三、技術(shù)特點

• 數(shù)字化技術(shù)：利用標(biāo)準(zhǔn)化的硬件和軟件結(jié)構(gòu)，實現(xiàn)多種保護(hù)功能的綜合。
• 靈活配置：用戶可根據(jù)需要選擇所希望的保護(hù)功能，以適應(yīng)不同發(fā)電機(jī)的要求。
• 簡化設(shè)計：減少繼電器之間的布線和輔助部件的總量，降低設(shè)計和安裝成本。
• 易于維護(hù)：簡化的維護(hù)和調(diào)試過程，提高經(jīng)濟(jì)效益。

1、 Product Overview

The Alstom LGPG111 Relay is a multifunctional digital generator comprehensive protection relay that integrates multiple generator protection functions and related layout logic into the same relay housing. This relay uses digital technology to convert analog signals into digital data through an analog-to-digital conversion circuit, and utilizes a powerful microprocessor for digital signal processing and execution of various protection algorithms.

2、 Main functions

The LGPG111 relay has multiple independent generator protection functions, including but not limited to:

Generator differential protection function (87G): used to protect against phase or three-phase stator winding faults.

Stator grounding fault protection function (51N): It operates in response to changes in current and is used for sensitive grounding of generators or transformers equipped with a resistor grounding.

Neutral point offset protection function (59N): It operates in response to voltage changes and is used to detect grounding faults in the stator winding of the generator.

Voltage related overcurrent protection function (51V): used for backup protection of the system.

Reverse power (32R) and forward low power (32L) protection functions: used to detect the loss of the prime mover.

Negative phase sequence protection function (46): used to detect continuous unbalanced load conditions.

Magnetic field fault protection (40): Reflecting generator demagnetization fault.

In addition, the relay also provides protection functions such as under voltage, over voltage, under frequency, over frequency, as well as additional auxiliary functions such as voltage balancing.

3、 Technical features

Digital technology: Utilizing standardized hardware and software structures to achieve comprehensive protection functions.

Flexible configuration: Users can choose the desired protection function according to their needs to adapt to the requirements of different generators.

Simplified design: Reduce the total amount of wiring and auxiliary components between relays, and lower design and installation costs.

Easy to maintain: Simplified maintenance and debugging process, improving economic efficiency.

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