Power system small signal stability region with time delay

Jia, Hongjie; Yu, Xiaodan; Yu, Yixin; Wang, Chengshan

doi:10.1016/j.ijepes.2007.06.020

Cited by 65 publications

(36 citation statements)

References 5 publications

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“…According to Equation (21), the relationship between P1 and Pi is linear, with a slope of ei1/e1i. To make Equation (24) satisfy the relationship in Equation (21), we kept ki/k1 = ei1/e1i.…”

Section: Small Signal Stability Region Boundary Model In Multidimensimentioning

confidence: 99%

“…All of the coefficients above are constants. For Equation (24), r/k1 must be constant, or else the right side of Equation (24) will be variable and fail to satisfy the linear relationship in Equation (21).…”

Section: Small Signal Stability Region Boundary Model In Multidimensimentioning

confidence: 99%

“…Based on an implicit function, Yang et al [19] presented a method to obtain the small signal stability region boundary through polynomial approximation. Jia et al [20,21], and Li et al [22] studied the influences on the small signal stability region boundary of exciter voltage limits, time delays and saturated links, respectively. Generally, these works were mainly focused on quickly finding the small signal stability region boundary of the traditional power system and the influences of various factors on the small signal stability region boundary, without paying attention to the boundary of the interconnected power system with large-scale wind power.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Research on a Small Signal Stability Region Boundary Model of the Interconnected Power System with Large-Scale Wind Power

Liu¹,

Ge²,

Lv³

et al. 2015

Energies

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Abstract:For the interconnected power system with large-scale wind power, the problem of the small signal stability has become the bottleneck of restricting the sending-out of wind power as well as the security and stability of the whole power system. Around this issue, this paper establishes a small signal stability region boundary model of the interconnected power system with large-scale wind power based on catastrophe theory, providing a new method for analyzing the small signal stability. Firstly, we analyzed the typical characteristics and the mathematic model of the interconnected power system with wind power and pointed out that conventional methods can't directly identify the topological properties of small signal stability region boundaries. For this problem, adopting catastrophe theory, we established a small signal stability region boundary model of the interconnected power system with large-scale wind power in two-dimensional power injection space and extended it to multiple dimensions to obtain the boundary model in multidimensional power injection space. Thirdly, we analyzed qualitatively the topological property's changes of the small signal stability region boundary caused by large-scale wind power integration. Finally, we built simulation models by DIgSILENT/PowerFactory software and the final simulation results verified the correctness and effectiveness of the proposed model.

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Section: Small Signal Stability Region Boundary Model In Multidimensimentioning

confidence: 99%

Section: Small Signal Stability Region Boundary Model In Multidimensimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on a Small Signal Stability Region Boundary Model of the Interconnected Power System with Large-Scale Wind Power

Liu¹,

Ge²,

Lv³

et al. 2015

Energies

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show abstract

“…Instead, online approaches, such as Prony [9] and H ∞ [10] analysis, have recently been presented to conduct online inter-area electromechanical oscillation parameter extraction and damping control. Nevertheless, the signal time delay between the instant of measurement and that of the signal being available to the controller, would deteriorate the control performance of the remote signals-based power system stabilizer (PSS) [3,10]. As time delay in WAMS is usually obvious, it should be accounted for to consider its impact on the remote signals-based PSS design in smart grids.…”

Section: Introductionmentioning

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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“…The control of the NCS in power systems with time delays has been previously explored [21,78,96,107,108,123,124]. The researchers, however, considered either the construction of controllers that are robust to time delays or controllers that use offline estimation.…”

Section: Related Workmentioning

confidence: 99%

Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures

Sargolzaei¹

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Power system small signal stability region with time delay

Cited by 65 publications

References 5 publications

Research on a Small Signal Stability Region Boundary Model of the Interconnected Power System with Large-Scale Wind Power

Research on a Small Signal Stability Region Boundary Model of the Interconnected Power System with Large-Scale Wind Power

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

Time-Delay Switch Attack on Networked Control Systems, Effects and Countermeasures

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