ALSTOM LFCB102差動(dòng)繼電器
1.產(chǎn) 品 資 料 介 紹：
中文資料：
ALSTOM LFCB102差動(dòng)繼電器是一種用于電力系統(tǒng)的保護(hù)設(shè)備，通常用于檢測(cè)和保護(hù)電力系統(tǒng)中的差動(dòng)故障。差動(dòng)繼電器通過比較兩個(gè)或多個(gè)電流信號(hào)，檢測(cè)是否存在差動(dòng)電流，從而判斷電力系統(tǒng)中是否存在故障，如相間短路或接地故障。
主要特點(diǎn)：
- 差動(dòng)保護(hù)：通過比較來自不同電流互感器的電流，檢測(cè)電力系統(tǒng)中的差動(dòng)電流，以發(fā)現(xiàn)故障。
- 高靈敏度：能夠檢測(cè)微小的差動(dòng)電流，及時(shí)響應(yīng)故障情況。
- 快速響應(yīng)：故障檢測(cè)后能迅速觸發(fā)保護(hù)動(dòng)作，切斷故障電路，防止事故擴(kuò)大。
- 自診斷功能：具備自檢功能，能夠監(jiān)測(cè)自身工作狀態(tài)，確?？煽窟\(yùn)行。
- 多種保護(hù)模式：支持多種差動(dòng)保護(hù)模式，如相間差動(dòng)保護(hù)、接地差動(dòng)保護(hù)等，適應(yīng)不同應(yīng)用場(chǎng)景。
應(yīng)用領(lǐng)域：
- 發(fā)電廠：用于發(fā)電機(jī)差動(dòng)保護(hù)，確保發(fā)電設(shè)備在故障情況下得到及時(shí)保護(hù)。
- 變電站：用于變壓器差動(dòng)保護(hù)，保護(hù)變壓器免受內(nèi)部故障影響。
- 輸電線路：用于輸電線路差動(dòng)保護(hù)，確保輸電線路的安全運(yùn)行。
- 工業(yè)設(shè)施：用于大型工業(yè)設(shè)施的電力保護(hù)系統(tǒng)，保障電力系統(tǒng)的穩(wěn)定和安全。
- 配電網(wǎng)：用于配電變壓器和配電線路的差動(dòng)保護(hù)，防止局部故障擴(kuò)展。
具體功能：
- 電流比較：實(shí)時(shí)比較不同測(cè)量點(diǎn)的電流值，檢測(cè)差動(dòng)電流。
- 故障判斷：根據(jù)設(shè)定的差動(dòng)電流閾值，判斷是否存在故障。
- 動(dòng)作指令：在檢測(cè)到故障后，發(fā)出保護(hù)動(dòng)作指令，切斷故障電路。
- 報(bào)警功能：在檢測(cè)到故障或異常情況時(shí)，發(fā)出報(bào)警信號(hào)，提示操作人員檢查系統(tǒng)。
- 數(shù)據(jù)記錄：記錄故障事件和運(yùn)行狀態(tài)，便于故障分析和維護(hù)管理。
使用注意事項(xiàng)：
- 正確接線：確保電流互感器和繼電器的接線正確，以避免誤動(dòng)作。
- 定期測(cè)試：定期對(duì)差動(dòng)繼電器進(jìn)行測(cè)試，確保其靈敏度和可靠性。
- 環(huán)境要求：安裝環(huán)境應(yīng)符合產(chǎn)品說明書的要求，避免潮濕、腐蝕性氣體等對(duì)設(shè)備的不利影響。
- 參數(shù)設(shè)置：根據(jù)實(shí)際應(yīng)用場(chǎng)景，合理設(shè)置差動(dòng)電流閾值和保護(hù)模式。
英文資料：
ALSTOM LFCB102 differential relay is a protective device used in power systems, typically for detecting and protecting differential faults in power systems. Differential relays compare two or more current signals to detect the presence of differential current, thereby determining whether there is a fault in the power system, such as phase to phase short circuit or ground fault.
Main features:
Differential protection: By comparing the currents from different current transformers, the differential current in the power system is detected to detect faults.
High sensitivity: able to detect small differential currents and respond promptly to fault situations.
Quick response: After fault detection, it can quickly trigger protective actions, cut off the faulty circuit, and prevent the accident from expanding.
Self diagnostic function: equipped with self checking function, able to monitor its own working status and ensure reliable operation.
Multiple protection modes: Supports multiple differential protection modes, such as phase to phase differential protection, grounding differential protection, etc., to adapt to different application scenarios.
Application areas:
Power plant: used for differential protection of generators to ensure timely protection of power generation equipment in case of faults.
Substation: Used for transformer differential protection, protecting transformers from internal faults.
Transmission line: used for differential protection of transmission lines to ensure the safe operation of transmission lines.
Industrial facilities: Power protection systems used in large industrial facilities to ensure the stability and safety of the power system.
Distribution network: used for differential protection of distribution transformers and distribution lines to prevent local fault propagation.
Specific functions:
Current comparison: Real time comparison of current values at different measurement points to detect differential current.
Fault diagnosis: Determine whether there is a fault based on the set differential current threshold.
Action command: Upon detecting a fault, issue a protective action command to cut off the faulty circuit.
Alarm function: When a fault or abnormal situation is detected, an alarm signal is issued to prompt the operator to check the system.
Data recording: Record fault events and operating status for easy fault analysis and maintenance management.
Precautions for use:
Correct wiring: Ensure that the wiring of the current transformer and relay is correct to avoid misoperation.
Regular testing: Regularly test differential relays to ensure their sensitivity and reliability.
Environmental requirements: The installation environment should comply with the requirements of the product manual, avoiding adverse effects of moisture, corrosive gases, etc. on the equipment.
Parameter setting: Reasonably set the differential current threshold and protection mode according to the actual application scenario.
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