OSCILLOSCOPE / NETWORK ANALYSER AS PER STANDARD IEC 61850-9-2

More and more conventional substations are shifting to digital mode. Thus, the amount of copper wires drops significantly, which as well as being good for the environment, also reduces the cost. Although it may not appear that way, this brings a major problem: current and voltage signals are not accessible. That is, in digital substations, these signals are stored on a data network, so they are not physically measurable. There are different instruments to measure any parameter in conventional substations, such as oscilloscopes, multimeters or network analysers, but in digital substations it is not possible to use these tools. To solve this problem, a software has been developed that measures different signal properties. 

In order to develop this digital instrument, a communication has been opened over an Ethernet connection, so that it can receive the packets sent by the Merging Unit. The application is based on the IEC-61850-9-2 standard as it defines the protocol for the Sampled Values. In this way, once the data has been received, all that information has been organised in order to later teach the user the desired data. This software is capable of performing the functions of an oscilloscope and a network analyser. It is therefore considered that a solution has been given to the problem that existed, since these two instruments are the most used in measuring work. 

Looking to the future, this tool will make it much easier to digitise substations, as the problem will disappear. Even so, there is the possibility of adding more features to the developed application, in order to improve it.