電力設備測試 > 風力發電機維護測試
絶緣油狀態線上持續監測系統
cmc Oil Sensor System 型號：OilQSens® OQ3000- 高性能，可及早發現臨界操作狀態 - 在損壞發生前，即偵測出異常變化，並在損壞開始前，即提供預警。
- 容易安裝或改裝；全年全天候、基於網路的分散式持續監測。
- 依據以OilQSens®監測的絶緣油狀態制定維護計劃，可節省巨額成本。
- 應用領域：海上轉換器變電站、石化、高壓變壓器、移動式絶緣油再生設備、牽引變壓器。
- 應用目標：高壓變壓器監測、絶緣油再生過程控制、污染偵測、絶緣油變質監測、絶緣油狀態監測解決方案。
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- 高性能，可及早發現臨界操作狀態 - 在損壞發生前，即偵測出異常變化，並在損壞開始前，即提供預警。
- 容易安裝或改裝。
- 基於網路的分散式監測。
- 依據以OilQSens®監測的絶緣油狀態制定維護計劃，可節省巨額成本。
- 全年全天候線上持續監測。
- 低購置成本、無需維護合約、無需耗材。
- 應用領域：
- 海上轉換器變電站。
- 石化。
- 高壓變壓器。
- 移動式絶緣油再生設備。
- 牽引變壓器。
- 應用目標：
- 資產保護；及時的預防性維護。
- 偵測油的老化。
- 監測油中水份。
- 高壓變壓器監測。
- 絶緣油再生過程控制。
- 污染偵測。
- 絶緣油變質監測。
- 絶緣油狀態監測解決方案。
- 產品說明：
- OilQSens®是一款絶緣油狀態監測器，極適用於線上持續的高壓變壓器絶緣油品質測試，可透過局域網路/無線局域網路傳送測量資料。
- 電力變電所中的變壓器，代表著資本投資的最大部份，因此，對這些資產的保護，至關重要。
- 電力變壓器中的故障狀態，通常是由許多因素造成的絶緣油劣化的結果。
- 早期發現油質變化，可精準的預測維護需求，而不是仰賴死板的檢查間隔或實驗室測試結果。
- 專利測量方法（專利號碼：EP 2 163 887 B1，用於測量流體及其應用的物理參數的方法與電路組件），結合低雜訊的高靈敏度與寬廣的測量範圍。
- OilQSens®代表著較老式技術例如溶解氣體分析（DGA）的重大改良，具有如下優點：
- 線上且持續。
- 對逐漸的變化更靈敏。
- 安易安裝，無需維護。
- 完全的溫度補償，可精準的比較資料。
- 較不昂貴。
- 系統簡介：
- OilQSens®從第一天開始 – 在損壞發生前，即偵測油質/狀態的早期變化：污染生成物例如：微粒、纖維素纖維、水份及其污染效應例如：酸及油皂，都會造成油的電性改變。採用絶緣油感測器OilQSens®，可持續線上測量有關的參數，而從油中的變化，可以評估變壓器油的狀態。溶解氣體分析（DGA）是一種取樣方法，可能漏失間歇性的問題，而OilQSens®從第一天開始持續線上運作，早在其它受到偵測限制的方法之前。
- 高精度的導電率、介電常數及溫度測量：導電率與介電常數兩者，都與溫度有關，OilQSens®的特點是具有一個類神經網路的自適應溫度補償演算法則。
- 油的導電率極低：不過，高靈敏度的OilQSens®可測量低至0.1 pS/m的導電率，且所有數值都有精準的溫度補償。
- 相對電應率即介電常數的量測：採用OilQSens®測量電應率（介電常數），可說明水的入侵及油的絶緣強度的改變。加上導電率數值的考量，即可清楚看出油質的變化。
- 對變壓器、高壓斷路器及絶緣油再生設備中的油進行監測，是提升效能與安全性的一項重要參數：隨著油的老化，它會形成改變導電率的電荷載體。而金屬催化劑、氧及溫度的存在，會加速此一過程。
- 介質損耗因素（Tan δ）是從導電率及電應率（介電常數）計算而得：符合IEC61620標準的測量，是以低電壓及頻率的交流方波電壓為基礎。
- 技術說明：
- 變壓器油中濕氣（水份）有許多破壞性的影響。電阻降低，可能促成局部放電及崩潰電壓降低；由水份引起的絶緣紙降解，造成纖維素的加速老化，從而導致機械強度降低。同時，在高溫下，纖維素的糖苷鏈接斷裂，因此減少絕緣紙的聚合度 - 這是絶緣紙壽命的一個量度。另一個破壞性的影響是起泡效應，油中的氣泡會降低介電強度。而變壓器油中的污染例如雜質（在變壓器組件中）與老化生成物，會強化變壓器油中的破壞性影響。
- 變壓器油中的老化生成物，是正負電荷離子載體。油的老化速率和酸的形成與催化劑（例如銅、鐵、鉛等金屬）、氧氣濃度及油溫成正比。金屬顆粒可能由製造或進入油中的冷卻系統泵浦的磨損而產生。纖維素纖維可從生產中拉出及來自油中固體絕緣材料的逐漸老化。
- 純油的實際導電率極低。然而，高靈敏度的OilQSens®可測量低至0.1 pS/m的導電率，而且所有數值都在考量未知的變動數量的不明污染物下，進行精準的溫度補償。
- 變壓器油的介電測試是高壓變壓器效能的一項重要參數。OilQSens®可監測電應率（介電常數），並已證明其與油中水份的精準相關性。此測量也使用專利的溫度補償系統。
- 基於網路的分散式監測系統，極適合遠端或不易進入的地點。測量結果是透過局域網路、無線局域網路或串列介面傳送。
- OilQSens®感測器系統是與德國South Westphalia應用科學大學"策略性防腐中心"技能平台-Ing. Kuipers博士教授合作開發。
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- 範圍：
- 導電率：0.1～20,000 pS/m（其它請洽詢）。
- 相對電應率（介電常數）：1～5。
- 靈敏度：
- 導電率：0.01 pS/m。
- 相對電應率（介電常數）：1*10-6。
- 溫度及壓力：
- 最大的油壓：60 bar＠20℃。
- 油溫：-10℃～+70℃（高溫選購：-10～+150℃，低溫選購：-40～+ 65℃）。
- 操作溫度：-20℃～+70℃。
- 材質：
- 感測器材質：不锈鋼。
- 導線：3m遮蔽式（可選購不同的導線長度）。
- 連接：
- ¼'' Swagelok®接頭，適用於6mm外徑管子（提供選購的連接頭）。
- 通訊介面：
- 串列通訊RS232/RS232-USB (可選購LAN、GSM、Profibus、Modbus、CAN、0..10V、0/4..20mA)。
- 電氣需求：
- 115/230 VAC，50/60 Hz (可選購 +24 VDC)。
- 詳細規格、配件、軟體及選購，歡迎洽詢。
- 範圍：
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- High performance, early detection of critical operation conditions - Detect change before wear damage
- Easy to install or retrofit
- Web based, decentralised monitoring
- Condition Based Maintenance—> large cost savings
- Early warning before damage starts
- Online, continuous 24 / 7
- Low cost of ownership, no service contract required, no consumables.
- Application Areas:
- Converter substation offshore
- Petrochemical
- High Voltage Transformers
- Mobile oil regeneration unit
- Traction Transformers
- Application Targets:
- Asset protection; Timely predictive maintenance.
- Aging of oil
- Monitor water in oil
- High voltage transformer monitoring
- Oil regeneration process control
- Contamination detection
- Oil deterioration monitoring
- Oil Condition monitoring solution
- Product Description:
- OilQSens® is an oil condition monitor ideally applied to oil quality testing in high voltage transformers, continuous and online, with data transmission via LAN/WLAN.
- The transformers in power substations represent the largest part of the capital investment - protection of these assets is most important.
- Fault states in power transformers are usually the result of oil degradation which can be due to a number of factors.
- Early detection of changes in oil quality accurately predict the need for maintenance rather than relying on rigid inspection intervals or laboratory testing.
- The patented measurement method (Patentnr.: EP 2 163 887 B1, Method and circuit assembly for measuring physical parameters in fluids and their application) combines a high sensitivity at a low noise with a broad measurement range.
- OilQSens® represents a significant improvement on older technologies such as dissolved gas analysis (DGA).
- Online and continuous
- More sensitive to gradual change
- Easier to install, no maintenance required
- Fully temperature compensated for accurate comparison of data
- Less expensive
- System Overview:
- OilQSens® can detect early changes in oil quality/condition from day 1 - before damage occurs. Contamination products, such as particles, cellulose fibres, moisture and their contaminating effects, such as acid and oil soaps cause a change in the electrical properties of oil. With the oil quality sensor, OilQSens®, dependent parameters are measured continuously and online.
- From the changes in the oil, the condition of the transformer oil is evaluated. Dissolved gas analysis (DGA) is a sampling technique that may miss intermittent problems. OilQSens® works online, continuously from day 1, prior to other technologies limits of detection.
- Conductivity, permittivity and temperature are measured with high precision. Both conductivity and permittivity are temperature dependent. OilQSens® features a self-adapting temperature compensation algorithm similar to a neural network.
- Electrical conductivity of oil is extremely low. However, the highly sensitive OilQSens® measures conductivity down to 0.1 picosiemens per metre and all values are accurately temperature compensated.
- Relative permittivity is a measure of the dielectric constant. The measurement of permittivity by OilQSens® makes a statement about water ingress and a modification of the insulating strength of the oil. Taken in conjunction with the conductivity values, a clear picture emerges of the changes in the oil.
- The monitoring of oil in transformer, high voltage circuit breakers and oil regeneration plants is an important parameter for the efficiency and safety. As oil ages it forms charge carriers which alter the conductivity. The process is accelerated by the presence of metal catalysts, oxygen and temperature.
- The loss angle tan δ is calculated from the conductivity and permittivity. The measurement according to IEC61620 is based on alternating square-wave voltage with low voltage and frequency
- The web based, decentralized monitoring system is perfect for remote or inaccessible locations. Measurements are transmitted via LAN, WLAN or the serial interface.
- Technical Descriptions:
- Moisture (water) in transformer oils has a number of damaging effects. Electrical resistance is reduced which can faciltate partial discharge and decreases in breakdown voltage. The mechanical strength decreases due to the accelerated aging of cellulose caused by the water resulting in degradation of the paper. Also at high temperature, the glycosidic links of the cellulose break and thus reduce the degree of polymerization of the insulating papers, this is a measure of the life of the papers. Another damaging effect is the bubble effect, gas bubbles in the oil reduce the dielectric strength. Contaminants in transformer oil e.g. Impurities (in the assembly of the transformer) and aging products enhance the damaging effect in the transformer oil.
- The products of aging in transformer oil are carriers of positively and negatively charged ions. The aging rate and the formation of acids of the oil are proportional to the catalysts (metals such as copper, iron, lead), to the concentration of oxygen present and to the temperature of the oil. Metallic particles can arise from manufacture or from abrasion in the cooling system pumps into the oil. Cellulose fibres can be pulled from production and the progressive aging of solid insulating materials in the oil.
- The actual conductivity of pure oils is extremely low. However, the highly sensitive OilQSens® measures conductivity down to 0.1 picosiemens per metre and all values are accurately temperature compensated taking into account the unknown, changing quantity of unknown pollutants.
- Dielectric testing of transformer oil is an important parameter for efficiency of high voltage transformers. OilQSens® monitors permittivity and this has been shown to correlate accurately to the water in the oil. This measurement also uses the patented temperature compensation system.
- The web based, decentralised monitoring system is perfect for remote or inaccessible locations. Measurements are transmitted via LAN, WLAN or the serial interface.
- The OilQSens® sensor system was developed in collaboration with the Competence Platform "center for strategic corrosion protection" Prof. Dr.-Ing. Kuipers of the University of Applied Sciences, South Westphalia.
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- Ranges
- Conductivity: 0.1 to 20,000 pS/m (other on request)
- Relative permittivity: 1 to 5
- Sensitivity
- Conductivity: 0.01 pS/m
- Relative permittivity: 1*10-6
- Temperature and pressure
- Max oil pressure: 60 barg at 20℃(870 psig at 68oF)
- Oil temperature: -10℃ to +70℃(optional, high temperature: -10° to + 150°C; optional, low temperature: -40° to + 65°C)
- Operating temperature: -20℃ to +70℃
- Material:
- Sensor material: Stainless steel
- Cable: 3 metre, shielded (optional, different cable length)
- Connections:
- ¼” Swagelok® for 6mm o.d. tube (optional connectors available)
- Communication Interface:
- Serial communication via RS232/RS232-USB (opt.: LAN, GSM, Profibus, Modbus, CAN, 0..10V, 0/4..20mA)
- Electrical requirements:
- 115/230 VAC, 50/60 Hz (optional, +24 VDC)
- Please feel free to contact for detailed specifications, accessories, software and options.
- Ranges