Asynchronous turbogenerators and compensators as a means of improving the operating capability of the Moscow power system

Arshunin, S. A.; Zinakov, V. E.; Kadi-Ogly, I. A.; Pinchuk, N. D.; Sidel’nikov, A. V.; Labunets, I. A.; Sokur, P. V.; Shakaryan, Yu. G.; Khvoshchinskaya, Z. G.

doi:10.1007/s10749-008-0004-0

Cited by 11 publications

(3 citation statements)

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“…When the d-axis excitation mmf is negative, such as F fd3 , the direction of E fd3 is opposite to that of the terminal voltage, and thus the reactive power consumption of the DESC can be increased. Meanwhile, in order to avoid the out-of-step operation of the DESC, the magnitude and direction of the q-axis field current are controlled so that the electromagnetic torque is always positive [19,20].…”

Section: Structure and Excitation Mode Of Descmentioning

confidence: 99%

Optimal design of q ‐axis field winding structure of dual‐excited synchronous condenser

Luo

et al. 2022

IET Electric Power Appl

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The dual‐excited synchronous condenser (DESC) has two field windings whose axes are located at direct and quadrature axes respectively. The DESC has more capacity of absorbing reactive power than that of the traditional synchronous condenser (TSC). However, the q‐axis field winding distributed on the d‐axis magnetic pole surface can decrease the magnetic circuit area of the rotor core of DESC, thus it may result in the increase of the total harmonic distortion (THD) of the magnetic field and the oversaturation of the rotor magnetic circuit. In order to obtain better electromagnetic characteristics of DESC, a q‐axis field winding structure is proposed by optimising the number of slots, slot pitch and slot dimensions. The influences of the number and pitch of slot in q‐axis on the air‐gap radial flux density and THD of DESC are studied under the d‐, q‐ and dual‐axis excitation modes. The dimensions of the q‐axis slots are optimised by combining the time‐stepping finite element method and Taguchi method, and the optimal structure of q‐axis field winding is obtained. A 10‐kVar DESC is developed to verify the simulation results. This study provides theoretical basis for the design and manufacture of the DESC.

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Section: Structure and Excitation Mode Of Descmentioning

confidence: 99%

Optimal design of q ‐axis field winding structure of dual‐excited synchronous condenser

Luo

et al. 2022

IET Electric Power Appl

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“…The above problem of renewable energy power grid can be solved by increasing the number of synchronous generators. The Dual-Excited Synchronous Generator (DESG), which has two sets of field windings, has better stability and reliability than the Traditional Synchronous Generators (TSG) [6][7][8]. The DESG can support more renewable energy integrated to the power grid than the TSG.…”

Section: Introductionmentioning

confidence: 99%

Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator

Wang

Liu

et al. 2021

IET Electric Power Appl

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The Dual-Excited Synchronous Generator (DESG) has two sets of field windings. The magnitudes and directions of the two field currents can be regulated, so that the excitation magneto-motive force can be in any direction. The electromagnetic characteristics of the DESG may be different with those of the Traditional Synchronous Generator (TSG) for the different rotor structures of the two generators. To obtain better electromagnetic characteristics, a time-stepping finite element model (T-S FEM) of the DESG is established. The air-gap radial flux density, saturation, active and reactive power of the DESG in single-and dual-axis excitation modes are calculated and compared with those of the TSG. The electromagnetic characteristics affected by the different ratio of qaxis field current to d-axis field current are studied. On this basis, an excitation control strategy that can enhance the steady-state stability is proposed, and the steady-state stability limits with and without excitation control are calculated by the T-S FEM. A 10-kW DESG is developed to verify the correctness of the simulation results. The results show that the DESG with dual-axis excitation has better electromagnetic characteristics and stronger reactive power ability, and the steady-state stability limit of the DESG is increased obviously through the excitation control.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…The field is con trolled according to the special vector control law; therefore, machines operate stably both in the modes of reactive power generation and consumption, which is unfeasible for synchronous turbogenerators due to the conditions of static and dynamic stability and structural limitations. It is supposed that, if the asyn chronized turbogenerators and asynchronized com pensators are placed in the power system, it becomes possible to flexibly control the modes of operation and the reactive power [1,2].…”

mentioning

confidence: 99%

Asynchronized turbogenerators application at electric power station of OAO Mosenergo

Arshunin¹,

Golov²,

Antipova³

et al. 2010

Russ. Electr. Engin.

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Asynchronous turbogenerators and compensators as a means of improving the operating capability of the Moscow power system

Cited by 11 publications

References 1 publication

Optimal design of q ‐axis field winding structure of dual‐excited synchronous condenser

Optimal design of q ‐axis field winding structure of dual‐excited synchronous condenser

Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator

Asynchronized turbogenerators application at electric power station of OAO Mosenergo

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