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W artykule przedstawiono pierwsze doświadczenia wynikające z przebudowy rozdzielni 110 kV w stacji 110/20 kV Oborniki Śląskie z wykorzystaniem technologii szyny procesowej i szyny stacyjnej. Przedstawiono zasadnicze założenia, zastosowane rozwiązania i obserwacje funkcjonowania obiektu.
This paper assesses the data flow control strategy of the substation secondary communication system based on the Architecture of Secondary Substation System. The data flow control method includes (i) design the data flow control strategy and (ii) data flow performance evaluation and assessment. The OPNET modeler is employed to simulate the performance of data flow control methods. These methods are...
The ever-increasing demand for power and limitations on upgrade have led to increased operating voltages and consequently, larger and number of Substations. Substation Automation systems (SAS) are responsible for the protection, monitoring and control of electric equipment within an electric substation. The big evolution for SAS came with introduction of IEC 61850 standard for power utilities that...
With the increasing adoption and implementation of IEC 61850 based substation automation systems (SAS), it has now become very important for power system engineers to know and understand technologies outside the realm of regular power system concepts which are not taught until graduate studies. Present day tools and systems are either costly and proprietary in nature or, are open source but not easy...
Various communication protocols are used within a typical industrial facility including Modbus RTU, DeviceNet and Profibus. These protocols used over the years have been in a Master-Slave configuration. Intelligent Electronic Devices (IEDs) are slaves to single or multiple masters with one-way communication with the IED acting as a data/controlled node to the master device. Control is implemented...
In the traditional domain of teleprotection signalling, there is a recognised triangle of performance. This triangle depends upon the required speed of communication, the expected dependability of the command, and the security of receipt. These three aspects are interlinked, and the correct balance of each is required in order to offer the traditional functionality such as permissive signalling, blocking...
A new standard, defining protocols has been evolving since 1997, called IEC61850. This standard enables several industrial benefits when using an Ethernet network, such as high speed device-to-device communications (i.e. peer-to-peer communications both digital and analog values) within cycles and between different vendors, high-speed processing of analog signals and a common database naming format...
This paper investigates various Ethernet LAN architectures for substation automation system applications with protection, control, monitoring data flows and their performance requirement. The paper discusses conceptual architecture designs and related redundancy technologies such as RSTP, PRP and HSR protocols. The suitability of these architectures and the redundancy technologies for mission-critical,...
Itpsilas an inevitable trend for substation automation system (SAS) to comply to IEC 61850 standard. With the increasing development of non-conventional instrument transformers and intelligent primary equipment, the station bus and process bus strictly require bay level IEDs with network ports and real-time performance. Moreover, too much IEDs in SAS leds to multi-levels switch of network in SAS and...
One of the important issues in a substation automation system is performance of the communication buses consist of station bus and process bus. The station bus provides communication between station level devices and bay level devices and the process bus provides communication between bay level devices and primary equipment. In substation automation system, the appropriate operation of protection,...
IEC 61850 communication networks and systems for utility automation is a standard for communications that creates an environment that will allow dramatic changes in the design and operation of substations. The paper describes the different components of such systems and the distribution of functions between the devices included in it. Multiple Merging Units communicating over a 100 Mb Ethernet with...
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