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微機保護裝置

產品介紹:

主要適用于中高電壓等級的保護、監控及測量,可用于線路、變壓器、電容器、電動機、母線PT檢測、備用電源自投回路及主設備的保護、控制與監視。單元化的設計使其不但能方便地配備于一次設備,也可以集中組屏、集中控制。規范的現場總線接口支持多個節點協調工作,實現系統級管理和綜合信息共享。

在線咨詢


基本內容

目前數字核心的主流為嵌入式微控制器(MCU),即通常所說的單片機;輸入輸出通道包括模擬量輸入通道(模擬量輸入變換回路(將CT、PT所測量的量轉換成更低的適合內部A/D轉換的電壓量,±2.5V、±5V或±10V)、低通濾波器及采樣、A/D轉換)和數字量輸入輸出通道(人機接口和各種告警信號、跳閘信號及電度脈沖等)。


產品特點

(1)硬件采用最新的芯片提高了技術上的先進性,CPU采用80C196KB,測量為14位A/D轉換,模擬量輸入回路多達24路,采到的數據用DSP信號處理芯片進行處理,利用高速傅氏變換,得到基波到8次的諧波,特殊的軟件自動校正,確保了測量的高精度。利用雙口RAM與CPU變換數據,就構成一個多CPU系統,通信采用CAN總線。具有通信速率高(可達100MHZ,一般運行在80或60MHZ)抗干擾能力強等特點。通過鍵盤與液晶顯示單元可以方便的進行現場觀察與各種保護方式與保護參數的設定。

(2)硬件設計在供電電源,模擬量輸入,開關量輸入與輸出,通信接口等采用了特殊的隔離與抗干擾措施,抗干擾能力強,除集中組屏外,可以直接安裝于開關柜上。

(3)軟件功能豐富,除完成各種測量與保護功能外,通過與上位處理計算機配合,可以完成故障錄波(1秒高速故障記錄與9秒故障動態記錄),諧波分析與小電流接地選線等功能。

(4)可選用RS232和CAN通信方式,支持多種遠動傳輸規約,方便與各種計算機管理系統聯網。

(5)集成度高、體積小、重量輕,便于集中組屏安裝和分散安裝于開關柜上。



應用范圍

(1)變電站綜合自動化系統

(2)配電室綜合自動化系統

(3)泵站綜合自動化系統

(4)水電站綜合自動化系統

(5)工業/工廠自動化系統

(6) 其它自動控制系統



基本用途

(1)110kV及以下電壓電容器保護

(2)工業和電力變電站自動化


在工作狀態指示的用途

(1)面板顯示斷路器分合狀態

(2)模擬圖示開關位置

(3)保護動作顯示故障原因

(4)保護動作信號繼電器輸出

(5)自檢繼電器常閉輸出

(6)面板顯示測量值和參數


在通訊上的用途

(1)MODBUS-RTU通訊協議

(2)遠程讀取信息,遠程設置參數



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