美国开放式系统公司

OilQSens® OQ3000 - Oil sensor system Highperformance, early detection of critical operation conditions

OilQSens® candetect early changes in oil quality/condition from day 1 - before damageoccurs. Contaminationproducts, such as particles, cellulose fibres, moisture and their contaminatingeffects, such as acid and oil soaps cause a change in the electrical propertiesof oil. With the oil quality sensor, OilQSens®, dependent parameters aremeasured continuously and on-line. From the changes in the oil, the conditionof the transformer oil is evaluated. Dissolved gas analysis (DGA) is a samplingtechnique that may miss intermittent problems. OilQSens® works online,continuously from day 1, prior to other technologies limits of detection.

OilQSens®能够从安装后的第1天就监测变压器油质量/状态的早期变化，即在故障发生前就监测到异常。污染物（例如颗粒，纤维），水分及其污染效应（例如酸和油皂）会导致油的电性能发生变化。使用变压器油质量传感器OilQSens®，可以连续、在线测量变压器油的电性能参数。根据这些参数的变化情况，从而对变压器油的状况进行评估。溶解气体分析（DGA）需要采样，由于不能对采样间歇及期间的油状况进行监测，因此可能会出现遗漏。OilQSens® 能够从安装后的第1天起就开始连续、在线监测，并且是在采用其它技术监测手段的检测下限前监测油参数变化。

Conductivity,permittivity and temperature are measured with high precision. Both conductivity and permittivity are temperaturedependent. OilQSens® features a self-adapting temperature compen-sationalgorithm similar to a neural network

该产品对电导率，介电常数和温度的测量精度都非常高。电导率和介电常数均与温度有关。OilQSens®具有类似于神经网络的自适应温度补偿算法。

Electricalconductivity of oil is extremely low. However, the highly sensitive OilQSens® measuresconductivity down to 0.1 picosiemens per metre and all values are accuratelytemperature compensated.

变压器油的电导率极低。但是高灵敏感的OilQSens®可测量的电导率低至0.1pS /m，并且所有的参数值均得到了精确的温度补偿。

Relativepermittivity is a measure of the dielectric constant. The measurement of permittivity byOilQSens® makes a statement about water ingress and a modification of theinsulating strength of the oil. Taken in conjunction with the conductivityvalues, a clear picture emerges of the changes in the oil.

相对介电常数是介电常数的量度。通过OilQSens®进行的介电常数测量可以很明确地知道进水和油绝缘强度的变化，结合电导率参数值，就可以清晰地了解变压器油的变化情况了。

The monitoring of oil in transformer, high voltage circuit breakers andoil regeneration plants is an important parameter for the efficiency andsafety. As oil ages it forms charge carriers which alter theconductivity. The process is accelerated by the presence of metal catalysts,oxygen and temperature.

对变压器、高压断路器和油回收厂的油状态进行监测，是提升效率和安全的重要保障。随着油的老化，它会形成电荷载体，从而改变油的电导率，而金属催化剂、氧气和温度都会加快该过程。

Theloss angle tan δ is calculated from the conductivity and permittivity. Themeasurement according to IEC61620 is based on alternating square-wave voltagewith low voltage and frequency

介质损耗角tanδ由导电率和介电常数推算出, 基于低电压和低频率的交变方波电压测量方法符合IEC61620标准。

The web based, decentralised monitoring system isperfect for remote or inaccessible locations. Measurements are transmitted viaLAN, WLAN or the serial interface.

基于Web的，去中心化的分布式监控系统非常适合对偏远或无法到达的设备进行监测。测量值通过LAN，WLAN或串行接口传输。