Coordination of distributed generation and step voltage regulator operations for improved distribution system voltage regulation

Kojovic, L.A.

doi:10.1109/pes.2006.1709537

Cited by 36 publications

(20 citation statements)

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“…Baldick and Wu [8] have developed a coordinated approach for the operation of switched capacitors and OLTC in a radial distribution system by approximating the problem as a constrained discrete quadratic optimization. In [9], a method for coordinating the operation of DG and step voltage regulator for improvement of distribution system voltage regulation has been presented. In [17], a coordination scheme is developed for coordination of a single DG with OLTC with an advanced LDC which is developed based on uniformly distributed load.…”

Section: Imentioning

confidence: 99%

A Novel Tuning Method for Advanced Line Drop Compensator and its application to Response Coordination of Distributed Generation with Voltage Regulating Devices

Muttaqi

Negnevitsky

et al. 2015

IEEE Trans. on Ind. Applicat.

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Nowadays, integration of small-scale electricity generators, known as Distributed Generation (DG), into distribution networks has become increasingly popular. This tendency together with the falling price of DG units has a great potential in giving the DG a better chance to participate in voltage regulation process, in parallel with other regulating devices already available in the distribution systems. The voltage control issue turns out to be a very challenging problem for distribution engineers, since existing control coordination schemes need to be reconsidered to take into account the DG operation. In this paper, a control coordination approach is proposed, which is able to utilize the ability of the DG as a voltage regulator, and at the same time minimize the interaction of DG with another DG or other active devices, such as On-load Tap Changing Transformer (OLTC). The proposed technique has been developed based on the concepts of protection principles (magnitude grading and time grading) for response coordination of DG and other regulating devices and uses Advanced Line Drop Compensators (ALDCs) for implementation. A distribution feeder with tap changing transformer and DG units has been extracted from a practical system to test the proposed control technique. The results show that the proposed method provides an effective solution for coordination of DG with another DG or voltage regulating devices and the integration of protection principles has considerably reduced the control interaction to achieve the desired voltage correction. Abstract --Nowadays, integration of small-scale electricity generators, known as Distributed Generation (DG), into distribution networks has become increasingly popular. This tendency together with the falling price of DG units has a great potential in giving the DG a better chance to participate in voltage regulation process, in parallel with other regulating devices already available in the distribution systems. The voltage control issue turns out to be a very challenging problem for distribution engineers, since existing control coordination schemes need to be reconsidered to take into account the DG operation. In this paper, a new tuning method for line drop compensator has been proposed and it is applied for control coordination of DG with other regulating devices in the network, which is able to utilize the ability of the DG as a voltage regulator, and at the same time minimize the interaction of DG with another DG or other active devices, such as On-load Tap Changing Transformer (OLTC). The proposed coordination technique has been developed based on the concepts of protection principles (magnitude grading and time grading) for response coordination of OLTC, DG unit and other regulating devices. A distribution feeder with tap changing transformer and DG unit has been extracted from a practical system to test the proposed control technique. The results show that the proposed method provides an effective solution for coordination between OLTC and DG, DG-DG or DG ...

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Section: Imentioning

confidence: 99%

A Novel Tuning Method for Advanced Line Drop Compensator and its application to Response Coordination of Distributed Generation with Voltage Regulating Devices

Muttaqi

Negnevitsky

et al. 2015

IEEE Trans. on Ind. Applicat.

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“…However, the addition of DG may complicate protection coordination and voltage control. If not properly handled, lower reliability and even a reduction in power quality can result [2].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, DG can be modeled as the current source with the reference signals calculated from equation (2).…”

mentioning

confidence: 99%

Real Time Simulation of Distribution System with Distributed Energy Resources

Trung¹,

Ahn²,

Lim³

2015

JOCET

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“…Basic voltage control resources in distribution networks are under-load tap changing transformers (ULTCTs) and off-voltage tap changing transformers (OVTCTs). References [9][10][11][12][13][14][15][16] examine the impact of DGs on the voltage control resources and at the same time suggest various procedures required for their mutual coordination aiming to achieve the optimal voltage control. The ULTCT are dealt with in most cases.…”

Section: Introductionmentioning

confidence: 99%

Optimal Seasonal Voltage Control in Rural Distribution Networks with Distributed Generators

Radosavljević¹,

Jevtić²,

Klimenta³

2010

Journal of Electrical Engineering

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This paper proposes a procedure for determining the optimal tap changer positions of off-voltage tap changing transformers in radial rural distribution networks in presence of distributed generators (DGs). The procedure is based on spatial network decomposition and as well as bringing down a branchy LV network to an equivalent line. Optimal voltage module values of PV nodes in the optimal seasonal control plan are determined by the application of a genetic algorithm. The proposed procedure is examined in two real distribution networks: a radial 33-node network with 11 DGs modelled as PQ nodes and a radial 40-node network with three DGs in total, two of which are modelled as PV nodes and one modelled as a PQ node.

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Coordination of distributed generation and step voltage regulator operations for improved distribution system voltage regulation

Abstract: This paper presents coordination of distributed generation (DG) and step voltage regulator (SVR) operations for improved distribution system voltage regulations. Examples include DG with induction and synchronous generators and SVRs with different control modes.

Cited by 36 publications

References 0 publications

A Novel Tuning Method for Advanced Line Drop Compensator and its application to Response Coordination of Distributed Generation with Voltage Regulating Devices

A Novel Tuning Method for Advanced Line Drop Compensator and its application to Response Coordination of Distributed Generation with Voltage Regulating Devices

Real Time Simulation of Distribution System with Distributed Energy Resources

Optimal Seasonal Voltage Control in Rural Distribution Networks with Distributed Generators

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