Wide-area damping control using signal restoration under communication uncertainties

AbstractIn large-scale power systems, the wide-area damping controller (WADC) using remote input signals is an effective device that can be applied to deal with poor inter-area oscillation damping. However, its control effect will be degraded by communication uncertainties such as variable time delays in both input and output sides of WADC, partial and complete communication failures. This paper focuses on a new WADC design by regarding communication uncertainties. Such uncertainties are mathematically formulated and analyzed in order to signify its impact on the oscillatory stability. The signal restoration of input and output pairs of WADC is proposed to alleviate an adverse effect of communication uncertainties. Simulation study in an IEEE 50-machine 145-bus test system elucidates that the proposed WADC is superior to that of the conventional WADC without considering communication uncertainties in both performance and robustness.

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A review on wide-area damping control to restrain inter-area low frequency oscillation for large-scale power systems with increasing renewable generation

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2015.12.167 ◽

2016 ◽

Vol 57 ◽

pp. 45-58 ◽

Cited By ~ 32

Author(s):

Xinran Zhang ◽

Chao Lu ◽

Shichao Liu ◽

Xiaoyu Wang

Keyword(s):

Power Systems ◽

Large Scale ◽

Low Frequency ◽

Wide Area ◽

Renewable Generation ◽

Frequency Oscillation ◽

Low Frequency Oscillation ◽

Damping Control

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Damping Controller Based on Output Prediction Observer and LMI Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.219-220.1371 ◽

2011 ◽

Vol 219-220 ◽

pp. 1371-1374

Author(s):

Ke Luo ◽

Hai Ying Yu

Keyword(s):

Time Delay ◽

Power Systems ◽

Low Frequency ◽

Test System ◽

Wide Area ◽

Frequency Oscillation ◽

Low Frequency Oscillation ◽

Simulation Results ◽

Wide Area Damping Controller ◽

Damping Controller

To damp the inter-area low-frequency oscillation in power systems, a wide-area damping supplementary inter-area controller, based on output prediction observer and LMI method, was designed in this paper. Simulation results of a test system show that the wide-area damping controller can well damp inter-area low-frequency oscillation, and is insensitive to time-delay to some degree.

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Wide-area damping controller design of large-scale PV power plants in interconnected power systems

2016 China International Conference on Electricity Distribution (CICED) ◽

10.1109/ciced.2016.7576170 ◽

2016 ◽

Author(s):

Jing Ge ◽

Da-wei Zhao ◽

Jin Ma ◽

Yu-sheng Wang ◽

Hong-ji Du ◽

...

Keyword(s):

Power Systems ◽

Power Plants ◽

Large Scale ◽

Controller Design ◽

Wide Area ◽

Interconnected Power Systems ◽

Wide Area Damping Controller ◽

Damping Controller

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Methodology for Implementing the State Estimation in Renewable Energy Management Systems

Energies ◽

10.3390/en14082301 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2301

Author(s):

Yun-Sung Cho ◽

Yun-Hyuk Choi

Keyword(s):

Renewable Energy ◽

Power Systems ◽

State Estimation ◽

Measurement Errors ◽

Large Scale ◽

Test System ◽

The State ◽

Inner Function ◽

Outer Function ◽

Bad Data

This paper describes a methodology for implementing the state estimation and enhancing the accuracy in large-scale power systems that partially depend on variable renewable energy resources. To determine the actual states of electricity grids, including those of wind and solar power systems, the proposed state estimation method adopts a fast-decoupled weighted least square approach based on the architecture of application common database. Renewable energy modeling is considered on the basis of the point of data acquisition, the type of renewable energy, and the voltage level of the bus-connected renewable energy. Moreover, the proposed algorithm performs accurate bad data processing using inner and outer functions. The inner function is applied to the largest normalized residue method to process the bad data detection, identification and adjustment. While the outer function is analyzed whether the identified bad measurements exceed the condition of Kirchhoff’s current law. In addition, to decrease the topology and measurement errors associated with transformers, a connectivity model is proposed for transformers that use switching devices, and a transformer error processing technique is proposed using a simple heuristic method. To verify the performance of the proposed methodology, we performed comprehensive tests based on a modified IEEE 18-bus test system and a large-scale power system that utilizes renewable energy.

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