Change management, software configuration training, and human error all impact the cost associated with substation automation engineering. Object-oriented engineering approaches as defined in the IEC 61850 standard represent significant cost savings when compared to traditional methods using hardwire and Distributed Network Protocol (DNP3). New multivendor system configuration tools are describ...

The superconductivity was discovered in 1911. In the same year, Sumitomo Electric Wire & Cable Works was established (Foundation was in 1897 as Sumitomo Copper Rolling Works), and laid the first Japan-made high-voltage underground cables. In 2011, we will celebrate the centennial anniversary of the discovery of superconductivity, and a high-temperature superconducting (HTS) power cable will be ...

This paper describes how the new international standard series IEC 61850 is applied and extended to meet the requirements for almost the whole electrical energy supply chain, especially outside substations. Several activities are under way in the domains of power generation (wind power plants, hydro power plants, and decentralized energy resources), power transmission and distribution as well a...

This paper gives an overview of the future trends in the protective relaying area including the substation automation, testing practices and standardization. Regarding the developments of relays, two major trends are predicted: relays becoming more versatile in terms of functions and capabilities; new algorithms based on unconventional techniques such as Neural networks and Fuzzy logic being in...

In order to study the electromagnetic compatibility of a power system, authors adopted an effective analysis software and proposed a new prediction method. First, simulated and analyzed the electromagnetic transient when switching the no-load bus in the 500kV substation by the ATP software and proved the simulation results were consistent with the actual results; Second, introduced the Gray pre...

As the substation communication world searches for the “Promised LAN”, it would be helpful to have a roadmap to give direction to the search. Many are the expectations of a LAN flowing with data and able to connect with any Intelligent Electronic Device (IED) that was ever made. Such expectations must be tempered with the cost and complexity of achieving them. This paper presents an outline of ...

This paper describes methodology for the computation of the electromagnetic transients in the high voltage substations, taking into account transients on the substation grounding system. Simulation technology is based on the system decomposition. Interconnections between different subsystems are done in each time step using Thevenin equivalents. Frequency dependent impedance of grounding conduc...

With the maturing of the Utility Communication Architecture (UCA), utilities are beginning to implement substation protection and control systems that are based on this technology. This paper describes such an implementation for the control of the Bateias 525kV substation on the COPEL power system in Brazil. In particular, the paper will describe the customer’s requirements and expectations wit...

This paper describes three software applications for distribution network load forecasting in a Smart Grid environment: (i) short-term feeder load forecasting, (ii) shortterm substation transformer load forecasting and transformer rating, and (iii) next-year load pocket forecasting. The shortterm feeder load forecasting allows a utility to reduce the possibility of feeder overloading. The subst...