Developments in computer and communication technologies have enabled unmatched integration of a wide range of substation functions within a computer control system. This new class of application has gone through a great deal of effort into achieveing cost-effective, efficient, secure and high performance of the utility power grid substation operations. The integrated Substation Control System (...

The electricity planning department of eThekwini Municipality performs a power system load forecast based on individual substation forecasts. The individual substation forecasts have uncertainty. It is desired to understand the effect of these uncertainties on the accuracy of the total system forecast. A Monte Carlo simulation of the forecasted system loadflow was performed. By means of this ap...

In this paper, we present a model developed for Electric Power Management Systems (EPMS) and Supervisory Control and Data Acquisition (SCADA) systems that allows us to calculate device vulnerability and help power substation operators and administrators identify and harden those portions of the control system that are most vulnerable to cyber attack. We use graph theory to model electric power ...

Modern society is unquestionably heavily reliant on supply of electricity. Hence, the power system is one of the important infrastructures for future growth. However, the power system of today was designed for a stable radial flow of electricity from large power plants to the customers and not for the type of changes it is presently being exposed to, like large scale integration of electric veh...

Within the hierarchy of power system, distribution system automation plays a crucial role to provide reliable service to customers. Though initially computer aided automation started as substation monitoring system (SMS) just for monitoring some key parameters such as voltage and currents of different components in a substation, the technological advancement has enabled to have access to more f...

United States agencies involved with national security are concerned about the vulnerability of the North American electric power grid to electronic intrusions, commonly known as cyber attacks. Several studies have identified changing socio-economic conditions that increase the probability of an electronic, computer-based attack being launched against a utility or substation, causing regional a...

This paper presents the concept of the generalized power source in an active distribution network. After the energy storage system (ESS), distributed generators (DG), and demand-side controllable load are connected to the active distribution network, part of the system load can be undertaken by these ESS, DG, and controllable load instead of relying on the capacity of the substation, which grea...

Most substations today contain a large number of Intelligent Electronic Devices (IEDs), each of which captures and stores locally measured analogue signals, and monitors the operating status of plant items. A key issue for substation data analysis is the adequacy of our knowledge available to describe certain concepts of power system states. It may happen sometimes that these concepts cannot be...

As the latest standard that is quickly gaining popularity in power substation automation, IEC 61850 offers self-descriptive object data models, standardized configurability with Substation Configuration Language (SCL), the promise of interoperations among intelligent electronic devices (IEDs) from different manufacturers, and lower integration installation costs. The IEC 61850 standard initiall...

The PMU has been found to carry great deal of value for applications in the wide area monitoringof power systems. Historically, deployment of these devices has been limited by the prohibitivecost of the device itself. Therefore, the objective of the conventional optimal PMU placementproblem is to find the minimum number devices, which if carefully placed throughout thenetwork, e...