Hrytsiuk Y. Calculation and optimization of parameters of sources of a reactive power and control means them

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0409U005532

Applicant for

Specialization

  • 05.09.03 - Електротехнічні комплекси та системи

30-10-2009

Specialized Academic Board

К 05.052.05

Vinnytsia national technical university

Essay

A research object is the modes of operations of sources of reactive-power and management facilities by them; a research purpose is a decline of losses of electric energy in the networks of energyprocurement companies and users by introduction of the improved methods of calculation of indemnification a reactive-power and optimization of the modes of its generating, and also management the compensating device; the article of research is methods of indemnification a reactive-power, power descriptions of the modes of operations of sources of reactive-power; research methods - analytical, experimental; theoretical and practical results - the methods of calculation of indemnification a reactive-power, determinations of optimum values of power and optimum load of different sources of reactive-power, are improved, method of estimation of influence of unsinewave feed of static thyristor compensator a reactive-power and self-reactance modulation of reactive parameter on the indexes of power process, that allowed on the project stage to minimize the losses of electric energy in the networks of users and energyprocurement companies; methods and facilities of management the different sources of reactive-power are improved, that allowed to decrease the losses of electric energy in the process of exploitation of electric networks; degree of introduction - within the limits of industry; a sphere (industry) of the use is industrial enterprises and energyprocurement companies; scientific novelty: the method of estimation of influence of polygonal, amplitude- and the phase-modulated voltage of feed is first offered and to self-reactance modulation of reactive parameter on the indexes of power process of static thyristor compensator, that allowed to decrease the specific losses of active-power in static thyristor compensator, to provide a sufficient regulation range, multichannel and multimodeness management by it; direction of creation of methods and regulators of optimum management (after the criterion of minimum losses), which allowed to adapt them to the terms of work of electric networks for which the characteristic protracted impermissible rejections of voltage, got subsequent development, and to support, depending on the mode of electro-consumption, in a knot set value of entrance reactive-power or level of voltage in possible limits; the methods of calculation of indemnification a reactive-power are improved due to the account of additional factors in the method of maximum expenses, account of technical and economic indexes and descriptions of static thyristor compensator, at determination of optimum values of power of different sources of reactive-power and their optimum load which allowed to promote the economic grounded levels of indemnification, and also to provide necessary exactness of calculations; degree of introduction - within the limits of industry.

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