Phasor measurement placement for transient stability analysis of power systems

Phasor measurement placement for transient stability analysis of power systems

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Phasor Measurement Placement for Transient Stability Analysis of Power Systems Xu Tao R M He Wang Peng D J Xu North China Electric Power University (Beijing), China ABSTRACT This paper presents a selection method for the phasor measurement placement. Taking the transient stability into account, this paper constructs a data platform of phasor measurement units. This platform not only copes with the limited sample but also supplies scientific rules for phasor measurement placement. We can acquire more knowledge of the phasor measurement units by this platform. The IEEE 39-Bus test system is employed to demonstrate the validity of the proposed approach. 0. INTRODUCTION With the more and more installation of phasor measurement units (PMUs) in power systems, it is capable of tracking various transients which take place in the system. Many experts have presented a lot of ways to make full use of the PMUs data. For example, some people use the neural network to predict the transient stability based on the PMUs data "I, but it is dificult to develop these projects in practice. The reason is as follows, 0 High cost of installing the PMUs If we can provide all the nodes of the practical system with PMUs, the abundant sampling data captured by PMUs can he helpful to predict and control the transient stability of power system. However, the relatively high cost of installing the PMUs in each bus prevents the adoption of such a solution at the present time. 0 limited PMUs data A power system is a very complex system of multi-dimension and nonlinearity. The observational PMUs data is obtained by finite sampling. In this instance, the traditional neural network approaches will suffer. from the difficulty of generalization, and the resulted models often overfit the data. In order to solve the above-mentioned problem, this paper proposes a PMUs data platform to determine the minimal set of PMUs which can predict the transient stability and implement many other operations. Based on this platform, we can spare much money and control the PMUs conveniently. The platform is organized as follows, shown in Figure 1. The PMUs platform for placement selection is composed of data collection, forming data warehouse, and placement selection. Furthermore, we can take advantage of the platform to predict the transient stability and actualize other application. The description of data collection and forming data warehouse is given in section 1 Following that, the placement selection will be presented. The proposed platform was tested on a IO-generator power system, and the results demonstrated the validity c uuu Fig.1 Data platform for PMUs data 1. DATA COLLECTION AND FORMING DATA WAREHOUSE At the beginning of the data accumulation, this paper simulates the actual measurement data of PMUs on the assumption that the PMUs are being installed at each bus. At the same time, finitely observational data sets that come form many data sources, like EMS, SCADA and other data sources should be collected. All of these
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This note was uploaded on 01/29/2011 for the course ENGR 52 taught by Professor Mcmillan during the Spring '10 term at Baylor Med.

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Phasor measurement placement for transient stability analysis of power systems

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