Design and experiment of wide area HVDC supplementary damping controller considering time delay in China southern power grid

He, Jinliang; Lü, Chao; Wu, Xuegang; Li, P.; Wu, Jie

doi:10.1049/iet-gtd:20080129

Cited by 100 publications

(45 citation statements)

References 5 publications

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“…With an increasing number of HVDC installations around the world, especially in countries with long transmission corridors like Brazil, China and India, there has been a renewed interest in this area [2], [3], [4].…”

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confidence: 99%

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Control Coordination Within a VSC HVDC Link for Power Oscillation Damping: A Robust Decentralized Approach Using Homotopy

Pipelzadeh

Chaudhuri

Green

2013

IEEE Trans. Contr. Syst. Technol.

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Abstract-Power oscillations can be damped effectively through modulation of both active and reactive power of a voltage source converter (VSC) based high voltage direct current (HVDC) link. The challenge, however, is how to coordinate the control action properly at the two ends of the link without using a centralized control scheme which require fast communication of control signals to remote actuator (converters) sites. A full centralized controller may result in a closed-loop performance worse than open-loop in case of a communication loss of feedback signal(s). Alternatively, with block-diagonal control structure, the individual control loops are decoupled from each other which are not only easier to implement in a decentralized way but also shown to guarantee a certain level of performance. Here the concept of homotopy is applied to obtain a single block-diagonal controller from a set of full controllers, individually designed to ensure specified closed-loop performance for a set of operating conditions. Simulation studies in DIgSILENT PowerFactory are carried out on two test systems to demonstrate both robustness and control coordination in a decentralized framework.

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confidence: 99%

“…Most of the work on HVDC control to damp oscillations, including [2], [3], [4], have primarily focused on HVDC networks based on CSC technology. A VSC HVDC link allows independent modulation of active power and reactive power (at both ends) and hence offers more flexibility than CSC where only the active power can be modulated.…”

mentioning

confidence: 99%

Control Coordination Within a VSC HVDC Link for Power Oscillation Damping: A Robust Decentralized Approach Using Homotopy

Pipelzadeh

Chaudhuri

Green

2013

IEEE Trans. Contr. Syst. Technol.

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“…1 ∼ 6 , 3 , and 7 are the optimization parameters. According to [17], the value of 3 and 7 is in the range of [4,6], while the value of 1 ∼ 6 is in the range of [0.01, 1].…”

Section: Parameter Optimization In Three Phase Shifters and DCmentioning

confidence: 99%

“…In recent years, the enlargement of the power grid has gradually reduced the natural frequency of the system and meanwhile caused the low-frequency oscillation accident to be more serious [4]. Correspondingly, most of the generators whose capacities are more than 300 MW in China have installed a PSS.…”

Section: Introductionmentioning

confidence: 99%

A New Hybrid PSS Optimization Method Based on Improved Active Set Algorithm

Liu

Yao³

2018

Mathematical Problems in Engineering

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This paper proposes a new hybrid optimization method for the phase-frequency characteristics of the double input power system stabilizer (PSS) based on the improved active set algorithm. This method takes the effect of the filtering section optimization on the parameter improvement into account, and the optimized model focuses on the minimum residual sum of squares between the actual and the target phase-frequency characteristics. The result shows that the improved parameters obtained from the proposed method provide much better phase-frequency characteristics than the widely used engineering parameters. The comparison between the proposed method and the typical commercial software indicates the universal superiority of the proposed method. And the studies on the impact of considering the filter section optimization on the phase-frequency improvement show that taking the filter section optimization into account will be beneficial for the phase-frequency improvement, though in application to the PSS2A model and the PSS2B model there are some differences. The achievements obtained in this paper provide a significant reference for the practical PSS parameter modification and improvement.

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“…Over the past few decades a lot of research attention was focused on identifying ways to maximize the impact of HVDC modulation control on AC system stability [4,5,6,7]. In the recent past, with an increasing number of HVDC installations around the world, especially in countries with long transmission corridors like Brazil, China and India, there has been a renewed interest in this area [8,9,10,11]. Even in smaller countries, such as the U.K. the HVDC links would increase the stability limits in addition to direct expansion of transmission capacity.…”

Section: Introductionmentioning

confidence: 99%

System stability improvement through optimal control allocation in voltage source converter-based high-voltage direct current links

Pipelzadeh

Chaudhuri

et al. 2012

IET Gener. Transm. Distrib.

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Control of both active and reactive power in voltage source converter (VSC) based HighVoltage Direct Current (HVDC) links could be very effective for system stability improvement. The challenge, however, is to properly allocate the overall control duty among the available control variables in order to minimize the total control effort and hence allow use of less expensive converters (actuators). Here relative gain array (RGA) and residue analysis are used to identify the most appropriate control loops avoiding possible interactions.Optimal allocation of the secondary control duty between the two ends of the VSC HVDC link is demonstrated. Active and reactive power modulation at the rectifier end, in a certain proportion, turns out to be the most effective. Two scenarios, with normal and heavy loading conditions, are considered to justify the generality of the conclusions. Subspace-based multi-input-multi-output (MIMO) system identification is used to estimate and validate linearized state-space models through pseudo random binary sequence (PRBS) probing.Linear analysis is substantiated with non-linear simulations in DIgSILENT PowerFactory with detailed representation of HVDC links.

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Design and experiment of wide area HVDC supplementary damping controller considering time delay in China southern power grid

Cited by 100 publications

References 5 publications

Control Coordination Within a VSC HVDC Link for Power Oscillation Damping: A Robust Decentralized Approach Using Homotopy

Control Coordination Within a VSC HVDC Link for Power Oscillation Damping: A Robust Decentralized Approach Using Homotopy

A New Hybrid PSS Optimization Method Based on Improved Active Set Algorithm

System stability improvement through optimal control allocation in voltage source converter-based high-voltage direct current links

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