A linear programming method for series and shunt compensation of HV transmission lines

El-Metwally, M.M.; El-Emary, A. A.; EL-Azab, M.

doi:10.1002/etep.45

Cited by 12 publications

(6 citation statements)

References 12 publications

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“…Shunt reactors are commonly installed on long transmission lines for voltage control (see for instance, among several papers,). Shunt reactors absorb reactive power and reduce overvoltages (Ferranti effect) at light load conditions.…”

Section: Reactive Compensationmentioning

confidence: 99%

Critical analysis of line loadability constraints

Quaia

2018

Int Trans Electr Energ Syst

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This paper develops a critical analysis of the constraints that influence the loadability curves of overhead transmission lines. The constraints considered are conductor thermal limit, allowed voltage drop (or voltage quality limit), steady-state (or angle) stability margin, voltage stability margin, and Joule losses limit. The analysis points out the different meanings and/or bearing of the various limits. In addition, the paper outlines a general comparison of voltage and angle stability and discusses the possible role of Joule losses, which are usually not included in line loadability analysis. The paper also discusses how line loadability is affected by the replacement of standard aluminium conductor steel reinforced conductors with high-temperature low-sag conductors and by reactive compensation with shunt reactors and series capacitors.

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Section: Reactive Compensationmentioning

confidence: 99%

Critical analysis of line loadability constraints

Quaia

2018

Int Trans Electr Energ Syst

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“…Reference [10] demonstrates the large advantage that can be obtained through a controlled compensation for medium and quite long lines, which fall in the voltage drop region of the loadability curves. The work in [11] examines the power capacity increase in long OHLs that can be obtained through passive compensators consisting of series capacitors and shunt reactors located at one or both line ends, whereas [12] analyzes the loadability curves of radial OHLs compensated by means of synchronous condensers connected at the receiving end.…”

Section: Introductionmentioning

confidence: 99%

Analytical Description of Overhead Transmission Lines Loadability

2019

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The loadability characteristics of overhead transmission lines (OHLs) is certainly not a new topic. However, driven by sustainability issues, the increasing need to exploit existing electrical infrastructures as much as possible, has given OHL loadability a renowned central role and, recently, new investigations on this subject have been carried out. OHL loadability is generally investigated by means of numerical methods. Even though this approach allows deducing useful information in both planning and operation stage, it does not permit to capture all the insights obtainable by an analytical approach. The goal of this paper is to tailor a general analytical formulation for the loadability of OHLs. The first part of the paper is devoted to the base-case of uncompensated OHLs. Later, aiming to demonstrate the inherent feasibility and flexibility of the novel approach proposed, the less frequent case of shunt compensated radial OHLs is investigated as well. The analytical formulation is combined with the use of circular diagrams. Such diagrams allow a geometrical interpretation of the analytical relationships and are very useful to catch the physical insights of the problem. Finally, in order to show the applicability of the new analytical approach, a practical example is provided. The example concerns calculation of the loadability characteristics of typical 400 kV single-circuit OHLs.

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“…In Khazaie et al, the ability of the distributed power flow controller (DPFC) as a useful tool to reduce the subsynchronous resonance (SSR) is presented. In El‐Metwally et al, a linear programming approach for optimal setting of FACTS devices such as series capacitor and shunt reactor compensation in order to increase the power transfer ability of overhead lines is offered. In Bagriyanik and Dag, a fuzzy approach for optimal locating of TCSC in a transmission lines in order to improve the voltage and transient stability and to reduce the reactive losses is proposed.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective transmission expansion planning with allocation of fixed series compensation under uncertainties

Moradi

Alinejad‐Beromi

Kiani

2017

Int Trans Electr Energ Syst

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Summary Integration of wind resources into the power systems has increased the technical and financial concerns in transmission expansion planning. In this paper, a stochastic structure is demonstrated for transmission expansion planning with allocation of fixed series compensation under wind and load uncertainties. Fixed series compensations have the ability to increase the transfer capacity of transmission lines. However, their significance benefit for transmission expansion planning is their higher effectiveness in power dispatching, which results in lower investment costs, compared with planning without fixed series compensations. The proposed planning model simultaneously optimizes targets such as the investment cost, the congestion cost, and the expected energy not supplied in each stage. The presented planning model is a complicated nonlinear optimizing problem. For introducing group of nondominated optimal solutions, multi‐objective gray wolf optimizer algorithm based on probabilistic optimal power flow is used. Then, fuzzy approach is used to lead to the best response. For demonstrating the feasibility and susceptibilities of the proposed algorithm, the planning methodology has been illustrated on the IEEE 24‐bus and Colombian test systems. The results acquired from the simulations monitor capability of the proposed structure in order to satisfy various planning indices.

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A linear programming method for series and shunt compensation of HV transmission lines

Cited by 12 publications

References 12 publications

Critical analysis of line loadability constraints

Critical analysis of line loadability constraints

Analytical Description of Overhead Transmission Lines Loadability

Multi-objective transmission expansion planning with allocation of fixed series compensation under uncertainties

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