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This paper discusses special considerations that shall be taken into account when designing and deploying Ethernet networks for wind power applications. It also contains description of practical experience from a real project of a big offshore wind farms recently built and about to be put into service in United Kingdom. The paper is organized into two parts. First part describes the characteristics...
A major challenge facing utilities today is the successful configuration and testing of multi-vendor protection schemes using the IEC 61850 standard. Even though the IEC 61850 standard allows for interoperability between different manufacturers' relays, the implementation of the communication protocol varies greatly from vendor to vendor. The standard does not mention how the IED should be configured...
The introduction of a process bus connection was one of the features that have been added by IEC 61850. Yet - implementations of process bus are non existent in substations supporting IEC 61850 today. One of the hurdles so far was the requirement for accurate time synchronization. Introducing IEEE 1588 finally provides the technology to solve that issue in a smart way by using the communication network...
This paper proposes a centralised Loss of Mains (LOM) detection technique to be implemented with a new network management system (NMS), the AuRA-NMS, an autonomous regional active network management system currently being developed in the UK through a partnership between several UK universities, two distribution network operators (DNO) and ABB [5].
The paper describes the abstract concept of Process Bus defined in IEC 61850 9-2 and then focuses on the implementation agreement that ensures the interoperability between merging units and protection devices from different manufacturers. The components of the Merging Unit, the requirements for its performance and time synchronization are described. Protection and recording applications based on the...
Since IEC 61850[1] became the widely used standard for substation communication with a lot of implementations testing is an important issue. The standard in its current version covers some possibilities and approaches for testing in general and for measurements of performance. They will be described and analysed. According to the approach of IEC 61850 the IEDs (Intelligent Electronic Devices) contain...
As the existing transmission system infrastructure is challenged to support loads beyond original design limits, the implementation of “wide area” Power System Protection Systems (PSPS) also called System Integrity Protection Schemes (SIPS) are often needed to maintain transmission system integrity. Such a system, with stringent performance and availability requirements, has been designed and installed...
This paper outlines the design challenges facing the protection and control systems required for offshore wind farms. In particular, the focus will be upon the integration of these systems and the distinct differences between the approaches taken for offshore compared to those of traditional onshore substation systems.
Testing IEC 61850 devices is a critical part of any substation automation scheme. Many IEDs have been installed and configured to provide status and control via GOOSE messages. IEDs can also be configured to listen to sampled value data. An important part of IEC 61850 data being transmitted can be the test and quality information. Real time digital simulation using a closed loop environment was done...
Standard communication protocols have been used for substation automation for many years. The applications are mainly on the station level communication to indicate alarms and events within a substation and make them visible to the operator. However the configuration and implementation of the protocols have differed widely between manufacturers leading to difficulties when attempting to support product...
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