Coordinated agent-based control for online voltage instability prevention

Baalbergen, J.F.

doi:10.1002/etep.1722

Cited by 4 publications

(3 citation statements)

References 41 publications

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“…Location, number, and capacity of energy resources, especially renewable resources with variable output (like solar and wind energy), have serious implications that influence the optimization algorithms of DG penetration and placement and tend to spread the interconnection points of DG units. Besides, scattered investment demands, installation environmental conditions for different technologies, installation and technical requirements, technical and economic policies, and local standards of distribution companies increase the dispersion of DG units in the distribution system. Different dispersion and arrangement with the same DG penetration level have different impacts on the network and require various settings.…”

Section: Introductionmentioning

confidence: 99%

Quadratic optimization method for a dual index combination of the penetration level and the dispersion factor of the distributed generation

Naghdi

Shafiyi

Haghifam

2018

Int Trans Electr Energ Syst

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Summary Increasing integration of local generators is a challenge in the planning, design, and operation of the distribution system. The distributed energy resources, especially renewable ones, have caused dispersion of generation units along the feeder. This paper presents a dual index combination of the penetration level and the dispersion factor of distributed generation. Maximum penetration level of distributed generation was determined by a multiobjective function of the proposed dual index. This function has subroutines based on voltage stability, active and reactive power flows, voltage profile limits, and power loss that are restricted by technical constraints associated system with shunt compensator. A limited memory quasi‐Newton trust‐region algorithm was developed to optimize the objective function by using the first‐ and second‐order sensitivities of the nonlinear objective function and a trust region based on the constraints. Two networks were used for testing, and obtained results revealed accuracy and validity of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Quadratic optimization method for a dual index combination of the penetration level and the dispersion factor of the distributed generation

Naghdi

Shafiyi

Haghifam

2018

Int Trans Electr Energ Syst

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“…With the development of power system topology and various loads, it is important to enhance voltage stability through some preventive control or foreseeable measures. In Baalbergen et al, a virtual power plant coordination method based on maximum loadability index is proposed to avoid voltage collapse for online control. But the method is based on static voltage stability.…”

Section: Introductionmentioning

confidence: 99%

A novel dynamic reactive power planning methodology to enhance transient voltage stability

Yang

Hong

Cheng

et al. 2017

Int Trans Electr Energ Syst

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Summary Transient voltage stability (TVS) is an important issue for security operation with the development of power system topology and loads. Lots of research on reactive power planning mainly focus on static voltage stability. But the research on the dynamic reactive power planning considering TVS is very lacking so far. And most of them are only analyzed on some serious buses without covering all the weak faults. And some research considering TVS are limited under some conditions and not general enough for large‐scale applications. Therefore, it is an urgent task to propose a feasible dynamic reactive power planning methodology to enhance TVS. So a novel dynamic reactive power planning methodology is proposed in this paper. In addition, although some TVS assessment indices have been proposed, they may not be suitable to be used in dynamic reactive power planning in the iteration calculation. To evaluate voltage stability after contingencies, a TVS assessment index is presented. Then an approach based on compensation sensitivity analysis is discussed for the best dynamic volt ampere reactive planning candidate locations. And a dynamic reactive power planning optimization methodology based on the memetic immune algorithm for multiobjective optimization is proposed to enhance TVS with the least static volt ampere reactive compensator investment cost and power loss cost. The methodology can cover all faults through random faults selection in the optimization. Afterwards, IEEE 39 power system and Zhejiang power grid in China are illustrated and analyzed for the improvement of TVS. It is proved that the proposed dynamic reactive power planning methodology is effective and beneficial to the security operation for power system.

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“…Baalbergen et al . present a new method for on‐line voltage instability control. The method uses a maximum loadability index to determine the amount of load relief necessary to restore stability.…”

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confidence: 99%

Special issue on on-line voltage stability assessments and enhancement

2014

Int. Trans. Electr. Energ. Syst.

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It is our honor and privilege to serve as guest editors of the special issue on power system On-line Voltage Stability Assessments and Enhancement for International Transactions on Electrical Energy Systems.A major activity in power system planning and operations is the examination of the impact of a set of credible disturbances it has on power system dynamic behaviors such as stability. Power system stability analysis is concerned with a power system's ability to reach an acceptable steady state (operating condition) following a disturbance. Important conclusions and decisions about power system operation and planning are made on the basis of the results of stability studies.Power system instabilities are unacceptable to society. Indeed, recent major blackouts in North America and Europe have vividly demonstrated that power interruptions, grid congestions, or blackouts significantly impact the economy and society. The ever-increasing loading of transmission networks together with a steady increase in load demands has pushed many power systems ever closer to their stability limit.Over the past 40 years, more than 30 major blackouts worldwide were related to voltage instability and collapse. Among them, at least 13 voltage-related blackouts happened in the USA. The on-line voltage stability assessment (VSA) system is designed to provide system operators with critical information for secure operations of power grids against voltage instability. There are significant engineering and financial benefits to be expected from on-line VSA. First, one may be able to operate a power system with operating margins reduced by a factor of 10 or more if the VSA is based on the actual system configuration and operating conditions instead of assumed worst case conditions, as is done in off-line studies. The second benefit is that the on-line analysis can be reduced to those cases relevant to actual operating conditions, thereby obtaining more accurate operating margins and allowing more power transfer. Because of the emerging smart grid environment where the distributed (renewable) generation and demand responses introduce much more uncertainty into the power system real-time operations, the on-line VSA system is becoming a critical tool for smart grid operations.As power systems become more complicated and the penetration of renewable energies increases, system operators require more powerful tools to analyze voltage security of the system based on actual on-line system operating conditions. VSA and enhancement (VSA&E) is a key application for maintaining and enhancing voltage security of bulk power systems. In today's control center, as power systems become more stressed and the penetration of renewable energies increases, system operators need to analyze voltage security of the systems based on actual operating conditions, contingency, and stressing of the system. Many power companies including California ISO recognized such a need. They required a real-time voltage stability analysis tool for maintaining the reliability of the...

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Coordinated agent-based control for online voltage instability prevention

Cited by 4 publications

References 41 publications

Quadratic optimization method for a dual index combination of the penetration level and the dispersion factor of the distributed generation

Quadratic optimization method for a dual index combination of the penetration level and the dispersion factor of the distributed generation

A novel dynamic reactive power planning methodology to enhance transient voltage stability

Special issue on on-line voltage stability assessments and enhancement

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