在线DGA在监视电源变压器中的作用

变压器是发电的基石，因此，保持其健康和绩效水平对于从保持照明到工业生产的一切至关重要。它们也是电力网络中最有价值的资产之一，占变电站资本成本的60％。

维萨拉（Vaisala）一直处于工业测量的最前沿，对在线溶解气体beplay充值的钱可以分析（DGA）了解一两件事。瓦萨拉（Vaisala）非分散红外（NDIR）技术为了构建一个DGA监视器，以测量指示故障的七种不同类型的气体，而某些在线监视器则依赖于实验室分析中常见的技术。在这篇博客文章中，我们重点介绍了评估变形金刚健康时需要知道的内容，以及如何选择DGA监视器，该显示器将对您的资产状况提供全面的了解。

关键的故障气体以及为什么它们形成

在功率变压器中，温度在发育故障的位置升高。然后由断层产生的热应力将导致天气的形成，其类型和数量将指示断层的性质，从而使所有者或操作员能够采取纠正措施。故障越严重，会产生越多的气体，而故障面积也会导致气体产量越高。

有七个关键的断层气体，需要密切监测其水平，以使资产所有者对变压器健康有全面的了解：甲烷，乙烷，乙烯，乙炔，一氧化碳，二氧化碳和氢。不同的气体将根据故障位置以及变压器中的温度和材料形成。因此，重要的是，关键资产的所有者选择一个可以监视所有这些气体的工具，而不仅仅是一两个。

Utilizing online DGA monitoring

传统上，电力行业依靠对变压器油的手动提取样品进行实验室测试。但是，此过程很慢，对样本污染的各种来源开放，并且在特定时刻仅提供了变压器健康的“快照”。

By contrast, online DGA monitoring allows faults to be detected as early as possible, by continuously assessing the levels of these gases in transformer oil. The sophistication of the technology used and its harnessing of digital trends allows operators to detect faults which may be overlooked in manual oil samples. This results in significant cost reductions when it comes to transformer maintenance and repair, as well as minimizing the likelihood of catastrophic failures.

选择理想的在线DGA监视器

While a number of online DGA monitors are available to transformer owners and operators, these are not all created equally. Reliable measurement of long-term gas trends is of course a must, but other key considerations when selecting a monitoring device will include its ability to operate in a variety of climatic conditions, a robust design that can be easily fitted to operational transformers, and little need to maintain or monitor the unit itself to ensure its effective operation.

Cost will of course be another significant factor, but here it is important to consider not just the upfront price of an online DGA monitor, but also the costs associated with its installation and operation over its entire active lifetime. Some online DGA techniques require consumables, such as carrier gases, or have moving parts that require maintenance. Alternatives technologies, such as NDIR, mean no additional installation or maintenance costs, offering operators significant cost savings over the lifetime of the technology.

Online DGA has led to a sea change in how transformers are monitored and serviced. It offers a more practical and effective approach to transformer monitoring, giving owners and operators greater peace of mind in the knowledge that these vital links in the energy network are operating in peak condition.

要了解有关Power Transformers在线DGA监控作用的更多信息，请观看网络研讨会：在线DGA监视电源变压器