Direction to increase the energy efficiency of asynchronous electromechanical energy converters for electric drive of sucker rod pumping installations

Authors: P.N. Tsylev, I.N. Shchapova (Perm National Research Polytechnic University, RF, Perm), V.A. Shchapov (Institute of continuous media mechanics, Ural Branch of RAS, RF, Perm)

Key words: asynchronous electric drive of sucker rod pump, the working winding, reactive current, power factor.

For periodic operation of unproductive oil wells is a number of shortcomings, to which, first of all, it is necessary to attributed decrease in volume of oil production, the intensive growth water cutting of production, productivity of the installed equipment does not meet the production rate of oil wells.

Transition to a continuous mode of operation for unproductive oil wells until recently restrained by absence in the market electrotechnical production of asynchronous electromechanical energy converters (AEEC) with synchronous rotation frequency of a rotor 150-500 min-1 and power 3-10 KW.

Vladimir Electromotor Plant JSC in 2010 started release one - and multi-speed AEEC with synchronous rotation frequency of a rotor 500 min-1 for the drive of rod pump. Use of such converters together with system of replaceable pulleys, belt drive and two-stage reducer allows provide a continuous mode of operation for number of unproductive oil wells.

A further solution the translation problems of the unproductive oil wells fr om periodic mode of operation to continuous mode demands development of production AEEC with synchronous rotation frequency of a rotor 150-375 min-1. Difficulty in solving this problem is connected with ensuring acceptable values of energy indicators AEEC.

A design AEEC with increased value for coefficient of efficiency is proposed. The increase for the energy coefficient of efficiency and power efficiency AEEC is provided due to power factor increase to the values close to its lim it value. The solution of this task is reached by placement on a stator AEEC the additional three-phase winding, which is connected to condensers. Such technical solution allows to create a magnetic field in air gap AEEC using reactive currents of additional winding and to unload a network three-phase winding from a reactive component of current.
References
1. Spravochnik po elektricheskim mashinam (Handbook of electric machines):
edited by Kopylov I.P., Klokov B.K., Part 1, Moscow: Energoatomizdat
Publ., 1988, 456 p.
2. Kisarimov R.A., Spravochnik elektrika (Electrician's reference), 4th ed.,
Moscow: Radiosoft Publ., 2010, 512 p.
3. Charonov V.Ya., Neftyanoe khozyaystvo – Oil Industry, 1996, no. 12,
pp. 46–48.
4. Yakovlev A.A., Turitsyna M.V., Vestnik PNIPU. Geologiya. Neftegazovoe i gornoe delo, 2012, no. 3, pp. 52-59.
5. Ogarkov E.M. et al., Nauka proizvodstvu, 2006, no. 1, pp. 39–40.
6. Tsylev P.N., Ogarkov E.M., Shchapova I.N., Korotaev A.D., Vestnik PGTU.
Neftegazovoe i gornoe delo, 2007, no. 7, pp. 253–259.
7. Ogarkov E.M., Tsylev P.N., Korotaev A.D., Burmakin A.M., Vestnik PGTU.
Neftegazovoe i gornoe delo, 2005, no. 6, pp. 172–175.
8. Belyaev E.F., Tashkinov A.A., Tsylev P.N., Vestnik PNIPU. Geologiya. Neftegazovoe i gornoe delo, 2012, no. 4, pp. 91–102.
9. Arkhangel'skiy V.L. et al., Katalog neftyanogo oborudovaniya, sredstv avtomatizatsii, priborov i spetsmaterialov (Catalogue of oil equipment, automation
equipment, devices and special materials), Part 2, Moscow: Publ.
of VNIIOENG, 1994, pp. 20–21.
10. Tekhnicheskiy katalog elektrodvigateley VEMZ (Technical catalog of
VEMZ motors), 2010, URL: http://www.vemp.ru/prod/motors.html.
11. Patent no. 2478249 RF, Three-phase asynchronous electric motor, Inventors:
Belyaev E.F., Tashkinov A.A., Tsylev P.N.
12. Zhelezko Yu.S., Kompensatsiya reaktivnoy moshchnosti i povyshenie kachestva elektroenergii (Reactive power compensation and power quality improving), Moscow: Energoatomizdat Publ., 1985, pp. 11–16.
13. Kostarev I.A., Sapunkov M.L., Zubarev S.Yu., Vestnik PNIPU. Geologiya.
Neftegazovoe i gornoe delo, 2012, no. 3, pp. 145–150.

Key words: asynchronous electric drive of sucker rod pump, the working winding, reactive current, power factor.

For periodic operation of unproductive oil wells is a number of shortcomings, to which, first of all, it is necessary to attributed decrease in volume of oil production, the intensive growth water cutting of production, productivity of the installed equipment does not meet the production rate of oil wells.

Transition to a continuous mode of operation for unproductive oil wells until recently restrained by absence in the market electrotechnical production of asynchronous electromechanical energy converters (AEEC) with synchronous rotation frequency of a rotor 150-500 min-1 and power 3-10 KW.

Vladimir Electromotor Plant JSC in 2010 started release one - and multi-speed AEEC with synchronous rotation frequency of a rotor 500 min-1 for the drive of rod pump. Use of such converters together with system of replaceable pulleys, belt drive and two-stage reducer allows provide a continuous mode of operation for number of unproductive oil wells.

A further solution the translation problems of the unproductive oil wells fr om periodic mode of operation to continuous mode demands development of production AEEC with synchronous rotation frequency of a rotor 150-375 min-1. Difficulty in solving this problem is connected with ensuring acceptable values of energy indicators AEEC.

A design AEEC with increased value for coefficient of efficiency is proposed. The increase for the energy coefficient of efficiency and power efficiency AEEC is provided due to power factor increase to the values close to its lim it value. The solution of this task is reached by placement on a stator AEEC the additional three-phase winding, which is connected to condensers. Such technical solution allows to create a magnetic field in air gap AEEC using reactive currents of additional winding and to unload a network three-phase winding from a reactive component of current.
References
1. Spravochnik po elektricheskim mashinam (Handbook of electric machines):
edited by Kopylov I.P., Klokov B.K., Part 1, Moscow: Energoatomizdat
Publ., 1988, 456 p.
2. Kisarimov R.A., Spravochnik elektrika (Electrician's reference), 4th ed.,
Moscow: Radiosoft Publ., 2010, 512 p.
3. Charonov V.Ya., Neftyanoe khozyaystvo – Oil Industry, 1996, no. 12,
pp. 46–48.
4. Yakovlev A.A., Turitsyna M.V., Vestnik PNIPU. Geologiya. Neftegazovoe i gornoe delo, 2012, no. 3, pp. 52-59.
5. Ogarkov E.M. et al., Nauka proizvodstvu, 2006, no. 1, pp. 39–40.
6. Tsylev P.N., Ogarkov E.M., Shchapova I.N., Korotaev A.D., Vestnik PGTU.
Neftegazovoe i gornoe delo, 2007, no. 7, pp. 253–259.
7. Ogarkov E.M., Tsylev P.N., Korotaev A.D., Burmakin A.M., Vestnik PGTU.
Neftegazovoe i gornoe delo, 2005, no. 6, pp. 172–175.
8. Belyaev E.F., Tashkinov A.A., Tsylev P.N., Vestnik PNIPU. Geologiya. Neftegazovoe i gornoe delo, 2012, no. 4, pp. 91–102.
9. Arkhangel'skiy V.L. et al., Katalog neftyanogo oborudovaniya, sredstv avtomatizatsii, priborov i spetsmaterialov (Catalogue of oil equipment, automation
equipment, devices and special materials), Part 2, Moscow: Publ.
of VNIIOENG, 1994, pp. 20–21.
10. Tekhnicheskiy katalog elektrodvigateley VEMZ (Technical catalog of
VEMZ motors), 2010, URL: http://www.vemp.ru/prod/motors.html.
11. Patent no. 2478249 RF, Three-phase asynchronous electric motor, Inventors:
Belyaev E.F., Tashkinov A.A., Tsylev P.N.
12. Zhelezko Yu.S., Kompensatsiya reaktivnoy moshchnosti i povyshenie kachestva elektroenergii (Reactive power compensation and power quality improving), Moscow: Energoatomizdat Publ., 1985, pp. 11–16.
13. Kostarev I.A., Sapunkov M.L., Zubarev S.Yu., Vestnik PNIPU. Geologiya.
Neftegazovoe i gornoe delo, 2012, no. 3, pp. 145–150.


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