Functional Testing of IEC 61850 Substations
Since IEC 61850 became the widely used standard for substation communication with a lot of implementations testing is an important issue.Edition 2 is available since 2012 and offers a wide range of possibilities and sophisticated details.Due to the huge amount of prospects and different places where testing can be located and marked systematization will be presented.Test bits, test quality, test indications, test mode and test behavior will be practically explained.In addition the approaches for isolation of signals are presented and compared.The main topic of this paper is the realization and experiences in utilities.Experiences in current implementations are combined with requirements for future testing solutions.On-going discussions with utilities have been shown, that the wide choice of possibilities requires user recommendations.This paper describes an approach, how to combine the new possibilities with existing testing procedures for protection and control in substations.A sequencer visualization of testing feeders utilizing distance protection with backup protection and auto-recloser is presented and discussed.Because of its high flexibility the approach can be adapted to solutions utilizing Sampled Values as well as conventional wiring.A proposal for a practical implementation into existing tools is included in the paper.The timely delivery of mission critical information is one main aspect of power utility communication.The test procedures for GOOSE performance of IEDs or the behavior of Sampled Values publishers take into account that some time is needed to transmit the data over the communication network.However,practice shows that a large share of the time allowed for the most challenging performance class is already used by the processing in the IEDs, loving little time for the communication network itself.Todays state of the art Ethernet networks normally deliver the required timing performance, but unexpected circumstances and hard to predict network load situations, such as the often suspected GOOSE avalanche, may impair the communication networks performance.In wide area networks, such measurements are even more than a challenge, because capturing packets simultaneously at locations far from each other is difficult.As a workaround, often only round-trip times are measured to assess the connections.But the measurement of a round-trip always comprises times from multiple contributors which cannot be taken apart.For instance, an important parameter like the channel asymmetry can only be determined if the signal propagation in both directions is individually measured.To achieve this, distributed and precisely time synchronized measurement equipment is to be used utilizing IEEE 1588 (PTP).The paper shows the usage of new measurement equipment in networks and explains measurements.An outlook finalizes the paper.
GOOSE IEC 61850 Sampled Values Testing
T.Schossig
OMICRON electronics GmbH in Klaus, Austria
国际会议
南京
英文
687-691
2015-09-21（万方平台首次上网日期，不代表论文的发表时间）