The increasing demand of load without considerable increase in transmission resources has posed numerous constraints and challenges in the power system monitoring and performance. The inadequacy in transmission resources has resulted in reduced operational margins for many power systems worldwide and has led to operation of power systems closer to their stability limits and to power exchange in...

The electrical structure of the power grid is utilized to address the phasor measurement unit (PMU) placement problem. First, we derive the connectivity matrix of the network using the resistance distance metric and employ it in the linear program formulation to obtain the optimal number of PMUs, for complete network observability without zero injection measurements. This approach was developed...

The incorporation of a tie-line between two areas may be beneficial in ways. First, the reserve capacity assisting area support to assisted area, and second, number Phasor Measurement Unit (PMU) requirements will become smaller for complete observability interconnected grid. objective function is formulated integrate reliability analysis synchrophasor networks. effect Zero Injection Bus (ZIB) i...

Abstract—This paper presents a Generalized Binary Integer Linear Programming (GBILP) method for optimal allocation of Phasor Measurement Units (PMUs) and to generate Dynamic State Estimation (DSE) solution with complete observability. The GBILP method is formulated with Zero Injection Bus (ZIB) constraints to reduce the number of locations for placement of PMUs in the case of normal and single ...

Modern power grids are increasingly relying on real-time data, such as those from Phasor Measurement Units (PMUs), for their control and management operations. Due to its dependence on the Internet for data transfer, the grid is susceptible to a wide range of cyber attacks. Among these, data manipulation attacks are of particular interest in the context of PMU data, due to their potential for c...

Frequency estimation is a crucial signal processing technique in Phasor Measurement Units (PMU). In this report, we propose a new algorithm for frequency estimation by interpolation of zero-padded discrete Fourier transform (DFT) samples. The bias performance of the proposed estimator is analyzed and an iterative algorithm is further proposed to reduce the bias to an arbitrarily small level. Si...

This paper presents a technique for real-time predictionof stability/instability of a power system based on synchrophasor measurements obtained from phasor measurement units (PMUs) at generator buses.For stability assessment the technique makes use of system severity indices developed usingbus voltage magnitudeobtained from PMUs and generator electrical power. Generator power is computed using ...

The deployment of Phasor Measurement Units (PMUs) could support a new generation of wide area monitoring and situational awareness systems, but this has not yet occurred. Instead, PMU data exchange occurs through bi-lateral agreements, each reflecting substantial human involvement. Our work proposes a new model for PMU data sharing, based upon today’s cloud computing technology base. Cloud-base...

The awareness of the state of the power grid, such as voltage magnitude, frequency and phasor angle is critical to maintain reliable and stable operations of the power grid. Synchronized by a common timing source, synchrophasors measure the electrical waves on power grids. The collected data are transmitted to the central server for further data processing and analysis, such as abnormal event d...