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GE > 加強的變壓器監測與診斷解決方案

變壓器套管監測|部份放電偵測系統

GE Bushing Monitoring and Partial Discharge Detection System for Transformers 型號：Intellix BMT 330

全面監測變壓器套管及單相變壓器組的局部放電活動。
單一產品，使用同一個套管轉接器，結合先進的線上連續套管監測及變壓器主油箱內的局部放電活動偵測。
採用單一診斷軟體GE Perception™，用於套管資訊、PD活動及DGA資料分析，產生熟悉而易於使用的資訊。
由單一供應廠安裝、服務，能確保正確的通訊及把管理負擔減至最小，以降低變壓器的總擁有成本。

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產品特點產品規格 Features Specifications

- 系統簡介：
  - 套管佔高壓變電所故障因素的很大比例，經常造成嚴重及昂貴的損失，在過去，這一直是採取預防性維護、提前更換及定期離線測試來解決問題。現在，既有技術已能讓資產擁有者偵測即將發生的故障及降低維護成本。
  - GE先進的Intellix™ BMT 330是一套線上系統，能持續監測套管狀態及偵測變壓器主油箱內發展中的部份放電問題。
  - Intellix™ BMT 330可以提供早期階段的故障警訊及套管與變壓器的重要健康資訊。
  - Intellix™ BMT 330可當作獨立系統使用，用於監測套管絶緣與部份放電活動，或搭配GE Kelman TRANSFIX油中溶解（多種）氣體分析儀與Perception Fleet軟體，成為整合式單一來源供應廠的解決方案。
- 主要優點：
  - 全面監測變壓器套管及單相變壓器組的局部放電活動。
  - 單一產品，使用同一個套管轉接器，結合先進的線上連續套管監測及變壓器主油箱內的局部放電活動偵測。
  - 採用單一診斷軟體GE Perception™，用於套管資訊、PD活動及DGA資料分析，產生熟悉而易於使用的資訊。
  - 由單一供應廠安裝、服務，能確保正確的通訊及把管理負擔減至最小，以降低變壓器的總擁有成本。
- 整合式解決方案：
  - 監測套管狀態及偵測主油箱內的部份放電（PD）活動。
  - 最多監測2組每組3個套管（單相及三相變壓器）。
  - 完整解決方案由單一來源供應廠安裝及服務。
  - 可單獨操作或輕鬆整合 GE Kelman TRANSFIX系列的DGA多種氣體分析設備。
  - 提供對於變壓器狀態的更全面性檢視。
- 最少的錯誤警報：
  - 運用油溫與環境溫度感測器，補償實際的套管溫度。
  - 區別影響套管及在所有套管上造成相同影響的因素。
  - 使用配備的濕度感測器找出PD與濕度的關聯因數。
- 套管轉接器保護：
  - 使用單一感測器得到套管分析與PD偵測資料。
  - 採用船舶級鋁材，可耐受極端的環境條件。
  - 冗餘電阻器可確保套管分接點保持接地。
  - 電壓與突波抑制電路，可一直限制來自轉接器的電壓。
- 直覺化操作便利的軟體：
  - 標準配備熟悉的Perception軟體，可用於下載及檢視資料。
  - 容易操作的個別變壓器軟體，可升級及同步監測多台變壓器。
  - 靈活的資料庫/伺服器選購，可滿足使用者需求。
- Intellix BMT 330套管解決方案：
  - Intellix BMT 330可即時持續監測套管狀態及提供終端使用者他們慣於從離線測試接收的資訊 – 即電容與功率因數（Tanδ）變化資訊，以評估套管介電效率與絶緣完整性。
  - 採用特製的轉接器連接在套管分接點上，Intellix BMT 330可測量：
    - 套管洩漏電流的變化 - 與依據套管銘牌資料所計算的原始值相比較。
    - 在3個套管電流相位之間的時間差 – 轉換為相對於彼此之間的相角差。
  - Intellix BMT 330可測量油溫與環境溫度，它將電容變化與套管的熱膨脹相互關聯，並在與離線得到的銘牌值相比較後，補償在實際的套管工作溫度進行測量的數值。
  - 部份放電偵測：
    - 部份放電是一小部份的固體或流體電絶緣系統在高壓應力下的局部擊穿，其不完全橋接兩個導體之間的空間。部份放電造成絕緣系統的局部逐漸侵蝕，最終導致變壓器繞組之間的關鍵絕緣故障。利用同一個套管轉接器，Intellix BMT 330提供了測量高頻信號以監測部份放電活動的附加優點，而為變壓器主油箱提供更高程度的保護。
    - 記錄部份放電脈衝幅度及脈衝數量，並用於計算部份放電活動的總測量值。
    - 採用幾種方法區別內部部份放電與外部雜訊（電暈放電）。
- GE整合式解決方案：
  - Intellix BMT 330可輕易與GE Kelman TRANSFIX油中溶解（多種）氣體分析儀整合，提供給終端使用者一個全方位的解決方案 – 更全面的檢視變壓器的總體狀態 - 從套管診斷與部份放電到完全的主油箱監測。
  - 提高資產設備的可靠性：及早發現變壓器的潛在問題，系統可提供以下的狀態資訊：
    - 套管絶緣的劣化。
    - 部份放電活動。
    - 油中含水量。
    - 發展中的重要故障氣體：H2、CO、C2H2、C2H4、C2H6、CO2及CH4。
    - 有助於減少意外停機的風險及改善電網的可靠性。
  - Perception軟體：
    - 操作者可用於下載及檢視從一個關鍵變壓器得到的資料，並運用它制定更好、更有依據的決策。
    - 此軟體是一套可升級的工具，使用者可從一個集中點檢視所有相關的變壓器資料。
  - 單一來源解決方案提供廠商：
    - 可有效降低安裝成本及減少協調不同維護團隊的管理負擔。
    - GE擁有豐富的經驗與全球資源，可提供整合式監測解決方案及協助使用者面對變壓器的挑戰，包括安裝、調試、培訓及持續的技術支援。
  - 應用範例 - 變電所自動化：
    - 以下應用示範了採用Intellix BMT 330、Kelman TRANSFIX DGA分析儀及Perception資料分析軟體進行套管與變壓器主油箱監測的總體解決方案。
- 資料蒐集：
  - 監測的套管：最多2組，每組3個套管。
  - 測量：洩漏電流及相對相角。
  - 電流範圍：2～200mA。
  - 取樣率：套管（低頻）：100kHz；部份放電（高頻）：100MHz。
  - 解析度：電流：0.01mA；相角：0.01度。
- 電氣輸出（機箱）：
  - 套管資料：
    - 電容變化%。
    - 相對功率因數變化%。
  - 部份放電資料：
    - PD脈衝幅度（pC）。
    - PD脈衝計數（單位）。
    - 部份放電指數（mW）。
    - 部份放電信號相位分析（PRPD）。
- 特點：
  - 日光下可見的指示燈：
    - 紅色：警報。
    - 琥珀色：注意。
    - 綠色：電源。
    - 藍色：維修。
  - 使用者可調整的警報電驛：
    - 2個SPDT警報電驛（C型），用於注意及警報位準。
    - 1個SPDT警報電驛（C型），專用於系統故障。
    - 電驛接點額定：2A @ 240 Vac電阻性負載或2A @ 30 Vdc。
  - 附加的感測器：
    - 頂部油溫。
    - 中性點CT。
- 通訊：
  - 通訊協定：
    - ModBus
    - DNP 3.0（選購）
    - IEC 61850（選購）
  - 介面：
    - 串列RS-485。
    - 帶RJ-45連接器的乙太網路銅纜線（選購）。
    - 帶ST連接器的乙太網路多模光纖（選購）。
- 詳細規格、配件、軟體及選購，歡迎洽詢。
- Overview:
  - Bushings account for a large proportion of High Voltage (HV) substation failures, often causing severe and costly damages. Preventive maintenance, early replacement and regular off-line testing have been employed to address this issue in the past. Now, technology exists that enables asset owners to detect impending failures and reduce their maintenance costs.
  - GE’s advanced Intellix™ BMT 330 is an on-line system that continuously monitors the condition of the bushings and can also detect developing partial discharge (PD) activity in the transformer main tank. It will alert personnel of fault conditions at an early stage and provide vital health information on the bushings and the transformer.
  - The Intellix BMT 330 can be utilized as a standalone system to monitor bushing insulation and partial discharge activity, or as an integrated, one-sourced solution with GE’s Kelman TRANSFIX Dissolved Gas Analysis (DGA) multigas analyzer and Perception Fleet software to provide a more in-depth view of the transformer's condition and root cause of major transformer failures.
- Key Benefits:
  - Comprehensive monitoring of transformer bushings and PD activity on a bank of single phase transformers
  - One product combining advanced on-line continuous bushing monitoring and partial discharge activity in the transformer main tank using the same bushing adaptor
  - One diagnostic software, GE's Perception™, used for bushing information, PD activity and DGA data analysis, resulting in familiar easy-to-use information
  - One supplier installing, servicing, ensuring proper communication and minimizing administrative burden in order to lower the total cost of ownership of your transformer
- Integrated Solution
  - Monitors bushing conditions and detects PD activity in the main tank
  - Can monitor 2 sets of 3 bushings (single phase and three phase transformers)
  - One-source provider that installs and services the entire solution
  - Can be stand-alone or easily integrated with GE's Kelman TRANSFIX family of DGA multi-gas units
  - Provides a more comprehensive view of the transformer's condition
- Minimal False Alarms
  - Compensation for actual bushing temperature using oil and ambient temperature sensors
  - Discrimination against factors affecting and causing the same effect on all bushings
  - PD to humidity correlation factor using included humidity sensor
- Bushing Adaptor Protection
  - Bushing analysis and PD detection data obtained using a single sensor
  - Marine-grade aluminum to withstand extreme environmental conditions
  - Redundant resistors ensure the bushing tapping points remain grounded
  - Voltage and surge suppression circuit to always limit voltage from adapters
- Intuitive Software
  - Familiar Perception software included for download and visualization of data
  - Easy-to-use individual transformer software that can be upgraded to simultaneously monitor multiple transformers
  - Flexible database/server options to accommodate user requirements
- The Intellix BMT 330 Bushing Solution:
  - The Intellix BMT 330 continuously monitors the condition of bushings in real-time and provides end users with the information they are used to receiving from off-line tests, namely changes in capacitance and power factor (tan delta), to assess the bushing dielectric efficiency and insulation integrity.
  - Using custom made adaptors connected at the bushing tapping points, the Intellix BMT 330 measures:
    - The change in bushing leakage current compared with the original values calculated from the bushing nameplate information.
    - The timing differences between the 3 bushing current phases, which translate to phase angle differences relative to each other.
  - The Intellix BMT 330 measures both oil and ambient temperature. It correlates capacitance changes linked to thermal expansion of the bushing and compensates for the measurements being made at actual bushing operating temperature compared with nameplate values obtained off-line.
- Partial Discharge (PD) Detection
  - PD is a localized breakdown of a small portion of a solid or fluid electrical insulation system that is under high voltage stress, which does not completely bridge the space between two conductors. PD results in localized gradual erosion of the insulation system that eventually leads to failure of the critical insulation between transformer windings. Using the same bushing adaptors, the Intellix BMT 330 offers the added advantage of measuring high frequency signals in order to monitor PD activity, giving an added level of protection for the main tank of the transformer.
  - The amplitude of the PD pulses, as well as the number of pulses, are recorded and used to calculate an overall measure of PD activity. Several methods are used to discriminate between internal PD and external noise (corona discharge).
- GE's Integrated Solution:
  - Intellix BMT 330 with Kelman TRANSFIX DGA:
    - The Intellix BMT 330 can easily be integrated with GE's Kelman TRANSFIX DGA analyzer, giving the end user a unique all-in-one solution that provides a more comprehensive view of the transformer's overall condition, from bushing diagnostics and PD, to complete main tank monitoring.
  - Increased Asset Reliability: Having an all-in-one integrated solution from GE will significantly increase the ability to detect potential transformer problems at an early stage. The system will provide status on:
    - Deterioration of the bushing insulation
    - Partial discharge activity
    - Moisture content in oil
    - Developing key fault gases H2, CO, C2H2, C2H4, C2H6, CO2 and CH4
    - This helps to decrease the risk of unplanned downtime and improve network reliability.
  - Perception Software:
    - GE's Perception software allows an operator to easily download and visualize the data available from a critical transformer and use it to make better, more informed decisions. The software is an upgradeable tool, allowing users to view all relevant transformer data from one centralized point .
  - One-Source Solution Provider
    - Having a one-source provider for complete transformer monitoring activities can effectively lower installation costs, as well as reduce the administrative burden of coordinating various maintenance crews. GE has extensive experience and worldwide resources available to deliver integrated monitoring solutions and assist customers with transformer challenges, including installations, commissioning, training and on-going technical support.
- Substation Automation Example
  - The application below showcases an integrated solution for bushing and transformer main tank monitoring utilizing the Intellix BMT 330, the Kelman TRANSFIX DGA analyzer and the Perception software for data analysis.
- DATA ACQUISTION
  - Bushings Monitored: Maximum 2 sets of 3 bushings
  - Measurement: Leakage current and relative phase angle
  - Current range: 2 to 200 mA
  - Sampling Rate: LF for bushing: 100kHz; HF for PD: 100MHz
  - Resolution:
    - Current: 0.01mA
    - Phase angle: 0.01 degree
- ELECTRICAL OUTPUT (ENCLOSURE UNIT)
  - BUSHING DATA:
    - % Change in Capacitance
    - % Change in Relative Power Factor
  - PARTIAL DISCHARGE DATA
    - Amplitude of the PD pulses (pC)
    - Count of the PD Pulses (Units)
    - Partial Discharge Index (mW)
    - Phase Resolve Partial Discharge (PRPD)
- FEATURES:
  - SUNLIGHT-VISIBLE LIGHT INDICATORS
    - Red – Alarm
    - Amber – Caution
    - Green – Power
    - Blue – Service
  - RELAYS FOR USER-ADJUSTABLE ALARMS
    - Two SPDT alarm relays (Type C) for caution and alarm levels
    - One SPDT alarm relay (Type C) dedicated to system faults
    - Relay Contact Ratings: 2A @ 240 Vac resistive load or 2A @ 30 Vdc
  - ADDITIONAL SENSORS
    - Top oil temperature
    - Neutral CT
- COMMUNICATION:
  - PROTOCOL:
    - ModBus
    - DNP 3.0 (optional)
    - IEC 61850 (optional)
  - INTERFACE:
    - Serial RS-485
    - Ethernet copper with RJ-45 connector (optional)
    - Ethernet multi-mode fiber optic with ST connector (optional)
- Please feel free to contact for detailed specifications, accessories, software and options.

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變壓器套管監測|部份放電偵測系統

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