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The price per kilowatt-hour of energy delivered by the electric power utility varies as the total power demand supplied to the region it serves throughout the day. To save money and protect power system equipment, it may be necessary to schedule the energy consumed during these periods of high/critical demand and higher pricing. In this project, a number of demand-side management strategies (DSM)...
Sudden loss of enormous power generation results in bulk power shortage and large-scale flow redistribution, which may cause severe insecurity. In this paper, an optimization algorithm is proposed for load shedding (LS) to prevent system collapse with the least cost. The optimization considers frequency/voltage deviation security and transmission line overload as the limits. A two-level iterative...
To improve power system reliability, it is important to reduce the amount of load shedding when a contingency occurs. Along with a comparison of the conventional load shedding methods, this paper presents an intelligent approach based on a centralized coordinated algorithm using a set of influence coefficients. The proposed method divides power system into a set of subsystems with the minimal mutual...
This paper presents overload alleviation based on real time power flow tracing for distribution networks. The proposed scheme is capable to detect the source of overload at the transformer. Subsequently, load buses will be selected according to the contribution of overload equipment, This scheme also determines possible load to shed. In order to verify the proposed scheme, dynamic simulation is performed...
Performance and availability are of critical importance when Internet services are integrated into emergency response management. Poor performance or service failure can result in severe economic, social or environmental cost. This paper presents Whirlwind, a software architecture that includes primitives for overload management and fault tolerance. A Whirlwind service is composed of a collection...
This paper presents a hybrid probabilistic/ deterministic method for determining the preventive control strategy to mitigate system overload. The proposed method introduces an index called normalized system overload (NSOL) index to measuring system overload level. Instead of considering all the possible failure modes and their probability, only a set of pre-defined contingencies and their probability...
This paper presents a unified preventive control approach considering voltage instability and thermal overload. Firstly, a new concept of generalized loading margin (GLM) is proposed. By using GLM, contingency and load increase scenario are represented using a unified parameter, and the unsolvable contingencies are treated the same as the solvable contingencies. Then, we discuss the use of a general...
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