Methods of voltage unbalance estimation in electric power networks

• Autorzy: Olczykowski Z. , Wąsowski A.
• Języki publikacji: EN

Abstrakty

EN

Methods of voltage unbalance estimation based on the theory of symmetrical components and the method of differential — angular coefficients of asymmetry have been discussed. It has been proposed the last one to estimate the asymmetry of square absolute voltage value, as useful for distorted processes.

Słowa kluczowe

EN

voltage unbalance; symmetric component; differential coefficient; differential angle

• Wydawca: AGH University of Science and Technology ; Lodz University of Technology
• Czasopismo: Electrical Power Quality and Utilisation. Journal
• Rocznik: 2006
• Tom: Vol. 12, nr 2
• Strony: 71--76
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Olczykowski Z.

autor

Wąsowski A.

• Politechnika radomska. Wydział Transportu; ul. Malczewskiego 29, 26-600 Radom,

Bibliografia

• 1. Kowalski Z.: Asymmetry in electric power systems. PWN. Warszawa 1987 (in Polish).
• 2. Bolkowski S.: Theory of electrotechnics . T.I. WNT. Warszawa 1986 (in Polish).
• 3. Rachwalski J.: Simplified method of determination of unbalance three-phase line to line voltage. ENERGETYKA. 1960, z. 8 (in Polish).
• 4. UIE „Power Quality” Working Group WG 2: Guide to quality of electrical supply for industrial installations. Part 4: Voltage unbalance.
• 5. PN-EN 61000-4-30. Electromagnetic compatibility (KEM). Part. 4: Estimation and measurement method of electric energy quality coefficient (in Polish).
• 6. PN-EN 61000-2-2. Electromagnetic compatibility (KEM). Part. 2-2. Environment - Compatibility levels of low frequency networks disturbances and signals transmitted by low voltage networks (In Polish).
• 7. Białek J., Wąsowski A.: Assessment of power unbalance of three-phase arc furnaces with the help of differential-angular coefficients. RE. 1983, z. 4 (in Polish).
• 8. Wąsowski A., Białek J.: Purpose of the change of criterion of assessment of three-phase arc furnace asymmetry in norm PN-93/E-06204 (IEC 676 (1980)). PE. 1999, z. 4 (In Polish).
• 9. Wąsowski A.: An influence of actual maintenance conditions of three-phase arc furnace on criterion of maximal efficiency and overall efficiency. JUEE. 2000, z. 1 (in Polish).
• 10. Wąsowski A.: Possibility of increase of arc furnace heating power at current unbalance. AE. 1985, z. 3/4 (in Polish).
• 11. Wąsowski A., Trifi N.: Selection of phase ratios of furnace transformer with the use of formalized Jabłoński’s method. PE. 1994, z.4 (in Polish).
• 12. Wąsowski A.: Selection of phase ratios of Yd11 transformer with respect to symmetry of supplying network of carbide furnace. PE. 1995, z. 8 (in Polish).
• 13. Szidłowskij A.K., Muzyczenko A.D.: Tablicy simmetricznych sostawlajuszczich. Izd. „Naukowa Dumka”. Kijew - 1976 .
• 14. Jagieła K., Gała M.: Nomography method ofdetermination of unbalance coefficient in three-phase power nets. PE. 2004, z. 1 (in Polish).