Wide-Area Measurements-Based Two-Level Control Design Considering Signal Transmission Delay

Dotta, Daniel; Silva, A.S. e; Decker, Ildemar C.

doi:10.1109/tpwrs.2008.2004733

Cited by 218 publications

(91 citation statements)

References 25 publications

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“…In the previous section, no time delay is considered since the main concern was to show that the method works for different scenarios and is comparable with the existing approach. The time delay in this section has been approximated by the second order Pade approximation [23]. To design a robust controller based on multi-model optimization approach for the uncertainty in time delay, the time delay incorporates the worst case (OP3).…”

Section: Time Delaymentioning

confidence: 99%

A Multi-Model Approach to Design a Robust SVC Damping Controller Using Convex Optimization Technique to Enhance the Damping of Inter-Area Oscillations Considering Time Delay

Abdlrahem¹,

Albalawi²

2017

EPE

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This paper introduces a multi-model approach to design a robust supplementary damping controller. The designed fixed-order supplementary damping controller adjusts the voltage reference set point of SVC. There are two main objectives of the controller design, damping low frequencies oscillations and enhancing power system stability. This method relies on shaping the closed-loop sensitivity functions in the Nyquist plot under the constraints of these functions. These constraints can be linearized by choosing a desired open-loop transfer function. The robust controller is designed to minimize the error between the open-loop of the original plant model and the desired transfer functions. These outcomes can be achieved by using convex optimization methods. Convexity of the problem formulation ensures global optimality. One of the advantages of the proposed approach is that the approach accounts for multi-model uncertainty. In contrast to the methods available in the literature, the proposed approach deals with full-order model (i.e., model reduction is not required) with lower controller order. The issue of time delay of feedback signals has been addressed in this paper for different values of time delay by applying a multi-model optimization technique. The proposed approach is compared to other existing techniques to design a robust controller which is based on H 2 under pole placement. Both techniques are applied to the 68-bus system to evaluate and validate the robust controller performance under different load scenarios and different wind generations.

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Section: Time Delaymentioning

confidence: 99%

A Multi-Model Approach to Design a Robust SVC Damping Controller Using Convex Optimization Technique to Enhance the Damping of Inter-Area Oscillations Considering Time Delay

Abdlrahem¹,

Albalawi²

2017

EPE

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“…With rapid advancements in wide-area measurement system (WAMS) technology, remote signals in the power systems are made to be available in local controls by utilizing synchronized PMUs at a rate up to 60 Hz [8,9], and using the measured phase angle as an auxiliary signal for modifying VSC power reference settings. However, typical time delays can be up to 1s [9] depending on the distance, transmission channel and other technical factors.…”

Section: B Droop Control With Measured Phase Angle As Inputmentioning

confidence: 99%

“…However, typical time delays can be up to 1s [9] depending on the distance, transmission channel and other technical factors. This is close to the time constants for the controls employed in the VSC HVDC link, and possibly deteriorates the controllers' dynamic performance.…”

Section: B Droop Control With Measured Phase Angle As Inputmentioning

confidence: 99%

Frequency stabilisation using VSC-HVDC

Shen¹,

Barnes

Preece

et al. 2016

2016 IEEE Power and Energy Society General Meeting (PESGM)

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“…The two-layer PSS structure serves the following two functions [15]: (1) both local and inter-area oscillation modes can be suppressed; and (2) in case the adaptive WADC fails to act due to loss of PMU data or communication network failure, the independent local power system stabilizer (LPSS) remains operational and is capable of suppressing local oscillation modes and supply a certain amount of damping to the inter-area oscillation modes. …”

Section: Design Of Adaptive Wadc For Remote Signal Based Pssmentioning

confidence: 99%

Adaptive Wide-Area Damping Control Scheme for Smart Grids with Consideration of Signal Time Delay

2013

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Abstract:As an important part of the smart grid, a wide-area measurement system (WAMS) provides the key technical support for power system monitoring, protection and control. But 20 uncertainties in system parameters and signal transmission time delay could worsen the damping effect and deteriorate the system stability. In the presented study, the subspace system identification technique (SIT) is used to firstly derive a low-order linear model of a power system from the measurements. Then, a novel adaptive wide-area damping control scheme for online tuning of the wide-area damping controller (WADC) parameters using the residue method is proposed. In order to eliminate the effects of the time delay to the signal transmission, a simple and practical time delay compensation algorithm is proposed to compensate the time delay in each wide-area control signal. Detailed examples, inspired by the IEEE test system under various disturbance scenarios, have been used to verify the effectiveness of the proposed adaptive wide-area damping control scheme.

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Wide-Area Measurements-Based Two-Level Control Design Considering Signal Transmission Delay

Cited by 218 publications

References 25 publications

A Multi-Model Approach to Design a Robust SVC Damping Controller Using Convex Optimization Technique to Enhance the Damping of Inter-Area Oscillations Considering Time Delay

A Multi-Model Approach to Design a Robust SVC Damping Controller Using Convex Optimization Technique to Enhance the Damping of Inter-Area Oscillations Considering Time Delay

Frequency stabilisation using VSC-HVDC

Adaptive Wide-Area Damping Control Scheme for Smart Grids with Consideration of Signal Time Delay

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