Residue Method Evaluation for the Location of PSS with Sliding Mode Control and Fuzzy for Power Electromechanical Oscillation Damping Control

Oscullo, José; Gallardo, Carlos

doi:10.1109/tla.2020.9049458

Cited by 12 publications

(10 citation statements)

References 11 publications

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“…In this case, accurate identification of the oscillating areas is an important challenge through wide area protection of power system. In this paper, at each time moving window, by using the oscillatory signals and evaluating the correlation factors between each two pairs of SGs signals δ i and δ j , the proposed correlation coefficient (CC) criteria is evaluated as follows:

\begin{equation}C{C_{ij}} = \frac{{n\sum {({\delta _i}{\delta _j}) - (\sum {{\delta _i}} )(\sum {{\delta _j}} )} }}{{\sqrt {[n\sum {\delta _i^2 - {{(\sum {{\delta _i}} )}^2}} ][n\sum {\delta _j^2 - {{(\sum {{\delta _j}} )}^2}} ]} }}\end{equation}

From (23), n represents the number of sampling data through determined time moving window. The value of proposed CC parameter is between −1 and +1 values which in the case of −1 value, two SGs i and j are anti‐phase together and in the case of +1 value two SGs are coherent with together.…”

Section: Conceptual Structurementioning

confidence: 99%

Adaptive criteria of estimating power system separation times based on inter‐area signal

Ranjbar

2023

IET Generation Trans & Dist

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This paper presents an online protective scheme of estimating critical inter‐area angle for controlling the inter‐area oscillations based on evaluating the rate of changes of rotor angle oscillations as an adaptive tripping index (ATI)‐based protective zone. For this purpose, by using wide area measuring system technology, oscillatory signals Δδ and Δω are measured which based on correlation coefficients criteria, coherent groups are identified which based on evaluating oscillating areas, inter‐area signals ΔδCOI‐AB and ΔωCOI‐AB are provided. In the case of evaluating an inter‐area oscillation, the proposed ATI scheme is activated which the first zero crossing point (ZCP0) of δCOI‐AB is determined as the critical criteria for estimating unstable situation. The proposed ATI approach consists of two adaptive protective zones ATI1 and ATI2 to estimate inter‐area oscillatory and inter‐area transient instabilities, respectively. The proposed ATI is an online and non‐model‐based scheme which evaluates the system dynamic stability through two straight and sinusoidal‐based adaptive zones. The effectiveness of the proposed ATI approach is evaluated on three different test systems IEEE 39‐bus, modified IEEE 39‐bus with converter‐based low inertia sources and a practical Iran nation power grid with presenting positive effects of damping inter‐area oscillations through different operational and topological conditions.

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\begin{equation}C{C_{ij}} = \frac{{n\sum {({\delta _i}{\delta _j}) - (\sum {{\delta _i}} )(\sum {{\delta _j}} )} }}{{\sqrt {[n\sum {\delta _i^2 - {{(\sum {{\delta _i}} )}^2}} ][n\sum {\delta _j^2 - {{(\sum {{\delta _j}} )}^2}} ]} }}\end{equation}

Section: Conceptual Structurementioning

confidence: 99%

Adaptive criteria of estimating power system separation times based on inter‐area signal

Ranjbar

2023

IET Generation Trans & Dist

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“…The residue method is often applied in input signals selection and controller parameters design in studying power system oscillation. Gallardo et al (2017) and Oscullo and Gallardo (2020) used the residue method to find the best position of power system stabilizers to suppress electromechanical oscillations. The damping degradation degree and components that lead to the stability degradation can be estimated by calculating the residue under the open-loop state, providing the basis for controller design (DuFu and Wang, 2018).…”

Section: Introductionmentioning

confidence: 99%

The observability and controllability metrics of power system oscillations and the applications

et al. 2023

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Power system oscillation has caused many serious accidents in renewable energy grid connection system. The concept of observability and controllability in control theory has been widely applied to power system oscillation study. In this paper, observability metric (OM) and controllability metric (CM) are defined from the perspective of oscillation modes, acting as a novel quantification method to quantify the observability and controllability of power system with distinct or repeated eigenvalues. Furthermore, in order to compare the reflection degree and control effect of signals in different oscillation modes, the mode comprehensive observability metric (MCOM) and comprehensive controllability metric (MCCM) are proposed. The proposed method shows clearer relationship between controllability/observability and oscillation modes by combining the information of conjugate eigenvalues together. The advantages of metrics are illustrated by comparing with theoretical derivations and calculation results of three traditional methods: participation factor, residue method and geometric measures. Finally, the metrics are applied to a subsynchronous damping controller (SSDC) design for better performance in oscillation monitoring and suppression. With the small-signal model and corresponding time-domain simulation, the effectiveness of the proposed method is verified.

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“…The typical method is the installation of a power system stabilizer (PSS) to the SG's excitation regulator to give positive damping torque for generators (Bhukya and Mahajan, 2019;Liu et al, 2020). However, the relevant research indicates that PSS is not always efficient for low-frequency oscillation, mainly in interval oscillation (Oscullo and Gallardo, 2020). Furthermore, the energy storage device is considered an effective way to enhance the security and stability of the power grid.…”

Section: Introductionmentioning

confidence: 99%

Rapid Power Compensation-Based VSC-HVDC Control Strategy for Low-Frequency Oscillation Suppression of the Island Power System

Abuduwayiti

Meng

et al. 2021

Front. Energy Res.

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Owing to the increased proportion of new energy power generation, such as wind power and photovoltaics, connected to the island grid, the system powered by the voltage source converter-based HVDC (VSC-HVDC) is prone to oscillate or even lose stability when disrupted. In this study, considering the rapid power compensation (RPC), an active power control strategy has been suggested for the receiving-end converter station of VSC-HVDC that could efficiently suppress the low-frequency oscillation of the island power system. First, the mechanism of VSC-HVDC inhibiting low-frequency oscillation of the island grid is analyzed in this study, and then, it theoretically determines that the damping capacity and inertia level of the rapid power compensation control strategy are stronger than those of conventional droop control and inertia control. Second, the receiving-end converter station switches from the RPC mode to droop control in order to allow the system to have a smooth recovery from the steady-state operation in the later stage of oscillation suppression. Moreover, detailed control logic and state-switching strategies have been designed. Finally, the simulation reflects that the proposed control strategy has a stronger oscillation suppression ability, allowing it to obtain rapid suppression of low-frequency oscillation.

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Residue Method Evaluation for the Location of PSS with Sliding Mode Control and Fuzzy for Power Electromechanical Oscillation Damping Control

Cited by 12 publications

References 11 publications

Adaptive criteria of estimating power system separation times based on inter‐area signal

Adaptive criteria of estimating power system separation times based on inter‐area signal

The observability and controllability metrics of power system oscillations and the applications

Rapid Power Compensation-Based VSC-HVDC Control Strategy for Low-Frequency Oscillation Suppression of the Island Power System

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