scholarly journals State Estimation via Phasor Measurement Units for Iraqi National Super Grid Power System Network

2016 ◽  
Vol 12 (1) ◽  
pp. 12-22
Author(s):  
Husham Hussein
Keyword(s):  
Power Systems ◽  
Power System ◽  
State Estimation ◽  
Electrical Power ◽  
Estimation Method ◽  
Phasor Measurement Units ◽  
Graph Theoretic ◽  
Phasor Measurement ◽  
Measurement Units ◽  
Analysis System

In this paper describes the operation of power system networks to be nearest to stability rated values limits. State estimation for monitoring and protection power system is very important because it provides a real-time (RT) Phase angle of different nodes of accuracy and then analysis and decided to choose control way (methods). In order to detect the exact situation (instant state) for power system networks parameters. In this paper proposes a new monitoring and analysis system state estimation method integrating with MATLAB environment ability, by using phasor measurement units (PMU's) technology, by this system the estimation problem, iterations numbers, and processing time will reduce. The measurements of phasors value of voltage signal and current estimated and analyzed. Mat lab/PSAT package use as a tool to design and simulate four electrical power systems networks such as INSG 24 buses, IEEE14 bus, Diyala city 10buses (IRAQ), and IEEE6 bus and then installed and applied PMU’s devices to each system. Simulation results show that the PMU's performances effectiveness appear clearly. All results show the validation of PMU’s devices as an estimator to power system networks states and a significant improvement in the accuracy of the calculation of network status. All results achieved and discussed through this paper setting up mathematical models with Graph Theoretic Procedure algorithm.

scholarly journals OPTIMAL PLACEMENT OF PHASOR MEASUREMENT UNITS FOR POWER SYSTEM OBSERVABILITY

2013 ◽  
pp. 266-269
Author(s):  
RAJPAL SAINI ◽  
MANJU MAM ◽  
MANISH KR. SAINI
Keyword(s):  
Fault Diagnosis ◽  
Power System ◽  
State Estimation ◽  
Phasor Measurement Units ◽  
Optimal Placement ◽  
Linear Algorithm ◽  
Normal Operating ◽  
Phasor Measurement ◽  
Minimum Number ◽  
Measurement Units

This paper present a method to find minimum number of phasor measurement units (PMUs) for complete observability of power system network for normal operating conditions.A linear algorithm is used to determine the minimum number of PMUs needed to make the system observable. For state estimation and fault diagnosis in power system synchronized snapshot of whole system must be necessary. The proposed method is used to benchmark the optimal PMUs placement solution for the IEEE 14-bus, IEEE 18- bus, IEEE 30-bus and IEEE 57-bus test systems.

scholarly journals Inertia Estimation of Wind Power Plants Based on the Swing Equation and Phasor Measurement Units

2018 ◽  
Vol 8 (12) ◽  
pp. 2413 ◽  
Author(s):  
Omar Beltran ◽  
Rafael Peña ◽  
Juan Segundo ◽  
Aaron Esparza ◽  
Eduard Muljadi ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Wind Power ◽  
Power Plants ◽  
Frequency Stability ◽  
Phasor Measurement Units ◽  
Wind Power Plants ◽  
Phasor Measurement ◽  
Measurement Units ◽  
Swing Equation

High penetration of wind power plants may have an adverse impact on power systems’ stability by reducing the inertia, and problems like frequency stability could appear due to total inertia in the system being reduced, making the power system more vulnerable to disturbances. However, most recent grid codes include an emulation inertia requirement for wind power plants, because modern wind turbines are capable of providing virtual inertia through power electronic converter controls to improve frequency stability issues. Because of this, it is necessary that the inertia estimation analyze and quantify the impact of the inertia reduction in power systems. In this paper, an implementation of a methodology for the inertia estimation of wind power plants is presented. It is evaluated through synchrophasor measurements obtained from a Real-Time Digital Simulator (RTDS) implementation, using industrial Phasor Measurement Units (PMUs). This methodology is based on the swing equation. Furthermore, a comparison of the results obtained between two professional tools RSCAD and DIgSILENT PowerFactory is performed, in order to evaluate the accuracy and the robustness of the methodology. This methodology is applied for the inertia estimation of an equivalent of the southeast zone of the Mexican power system, where there is a large-scale penetration of wind power plants. The results demonstrate that this methodology can be applied in real power systems using PMUs.

scholarly journals OPTIMAL PLACEMENT OF PHASOR MEASUREMENT UNITS FOR POWER SYSTEM OBSERVABILITY WITHOUT CONSIDERING ZERO INJECTION BUSES

2012 ◽  
pp. 117-121
Author(s):  
RAJPAL SAINI ◽  
MANJU mam
Keyword(s):  
Fault Diagnosis ◽  
Power System ◽  
State Estimation ◽  
Phasor Measurement Units ◽  
Operating Conditions ◽  
Optimal Placement ◽  
Linear Algorithm ◽  
Phasor Measurement ◽  
Minimum Number ◽  
Measurement Units

This paper present a method to find minimum number of phasor measurement units (PMUs) for complete observability of power system network for normal operating conditions .A linear algorithm is used to determine the minimum number of PMUs needed to make the system observable without considering zero injection buses. For state estimation and fault diagnosis in power system synchronized snapshot of whole system must be necessary. The proposed method is used to benchmark the optimal PMUs placement solution for the IEEE 14-bus, IEEE 18-bus, IEEE 24-bus, IEEE 30-bus and IEEE 57-bus test systems.

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