Current Limiting Conductors: A Distributed Approach for Increasing T&amp;D System Capacity and Enhancing Reliability

Johal, H.; Divan, Deepak

doi:10.1109/tdc.2006.1668661

Cited by 22 publications

(12 citation statements)

References 11 publications

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“…Further, the output voltage phase can be modified by using the dual virtual quadrature sources (DVQS) technique [3]. For such situations, the duty cycle has a DC component as well as a second harmonic component, as given by (1).…”

Section: Cnt Basicsmentioning

confidence: 99%

“…Modifying J 1 The matrix J 1 is the derivative of real power mismatch with respect to the bus voltage angle. To find the J 1 for a given network with CNTs, the derivative of (12) has to be taken with respect to the bus voltage angles.…”

Section: (15)mentioning

confidence: 99%

“…However, control of AC power through meshed grid is difficult. Hence, often modern grids face congestion, though parallel transmission corridors may have under-utilized capacity [1]. Power flow controllers allow routing of power through meshed grids in order to maximize the network utilization.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Implementation of loadflow for networks with controllable network transformers

Das

Divan

Harley

2013

2013 North American Power Symposium (NAPS)

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Traditional power system tools like loadflow are designed for systems with largely passive transmission and distribution assets. However, as the grid becomes smarter, more T&D assets are expected to be controllable. Tools such as loadflow and optimal power flow have to be modified to adapt to such "smart and controllable" grids. Controllable Network Transformers (CNTs) are low-cost power flow controllers that can be realized by augmenting an existing load tap changer by a direct AC-AC converter. This paper proposes a method for implementation of loadflow of networks with CNTs. The proposed method is applied to the IEEE 30 bus system and the results of the same are also presented.

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Section: Cnt Basicsmentioning

confidence: 99%

Section: (15)mentioning

confidence: 99%

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Implementation of loadflow for networks with controllable network transformers

Das

Divan

Harley

2013

2013 North American Power Symposium (NAPS)

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“…A simple method for simultaneous, stable control of multiple controllers is proposed in [8]. In the proposed strategy, each controller internally corrects itself, and controls the rate of injection by looking at the system state at each sampling instant.…”

Section: Introductionmentioning

confidence: 99%

“…In the proposed strategy, each controller internally corrects itself, and controls the rate of injection by looking at the system state at each sampling instant. The control strategy was demonstrated through simulations [8], but the criterion for selecting the control parameters and the underlying analytical framework is not discussed. Hence, there is no basis to guarantee absolute stability for all system conditions.…”

Section: Introductionmentioning

confidence: 99%

Stable operation of multiple power routers

Kandula

Iyer

Divan

2013

2013 IEEE Energy Conversion Congress and Exposition

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With the ability to improve grid reliability and reduce overall costs, the number of FACTS devices on the transmission grid is growing. With advances in power semiconductor technology, the rate of growth is expected to increase as well. Multiple FACTS controllers installed on the same network, with each trying to control system parameters to achieve their own objectives, can introduce high-frequency interactions. This paper proposes conditions for controller design that can ensure stable operation of multiple controllers. In contrast with a coordinated controller design, the proposed approach is independent of other controllers at the controller design stage. This paper uses power routers (UPFC, SSSC, BTB etc.) and a standard PI controller for analysis, but the results can be extended to any FACTS controller.

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Power flow management analysis using compensating techniques for managing congestion within electrical energy network

Jobanputra

Kotwal²

2021

SN Appl. Sci.

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In a deregulated electrical energy system with increasing penetration of renewable energy sources, rescheduling of the power generation(s) is required, and it is going to congest some of the power lines in the complex power system. The power flow can be managed using different compensating techniques. This study presents power flow management analysis using selected compensation technologies (i.e. series, shunt, series-shunt, and D-FACTS) for congestion alleviation. In this work, an IEEE 6 bus distributed network is used and the mentioned compensating techniques are evaluated for congestion management considering a case of power line outage. It is observed some of the power lines are overloaded by 10%. To reduce the overloading; the series, shunt, series-shunt, D-FACTS compensation technologies are used and found that they can reduce the active power overloading of the congested line by 27%, 9.5%, 12%, and 27% respectively. But the apparent power congestions can be reduced using series and D-FACTS techniques by 14% compare to shunt and series-shunt techniques. It is affirmed that the D-FACTS can effectively manage the power flow compare to other compensation techniques and can offer other benefits (e.g. voltage quality, line power flows, injection of power at the buses, reduction in power losses, etc.).

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Current Limiting Conductors: A Distributed Approach for Increasing T&D System Capacity and Enhancing Reliability

Cited by 22 publications

References 11 publications

Implementation of loadflow for networks with controllable network transformers

Implementation of loadflow for networks with controllable network transformers

Stable operation of multiple power routers

Power flow management analysis using compensating techniques for managing congestion within electrical energy network

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