Mitigation of Capacitor Bank Energization Harmonic Transients
In the present study, an overview of the capacitor bank energizing transients is presented and the means of harmonic mitigation technique are investigated. Capacitor bank connection is essential due to reactive compensation reasons. Transients produced upon of capacitor bank energizing, reach in harmonics, may be harmful for the capacitor and become an increasing concern for both electric utilities and customers since its switching usually occurs quite frequently. We know that power factor correction capacitors are sensitive to harmonics and one factor of the failures of power capacitors indicates the prime odd harmonics like 5th, 7th, 11th, 13th harmonics. A time domain simulation using PSCAD/EMTDC was performed to predict the harmonic spectrum of the distorted voltage waveform in a real 11 kV Romanian distribution subsystem
Inrush current analysis for switching large shunt capacitor bank in a 230 kV substation system
This paper presents the simulation and investigation of switching large shunt capacitor bank in a 230kV Thailand substation system. Simulation is performed using PSCAD/EMTDC. The inrush current is generated by energizing of the 4×72 Mvar, 230 kV shunt capacitor banks. The purpose is to observe the inrush current to ensure safe and successful operations of the shunt capacitor banks. In addition, the effects of parameters such as sizing of current limiting reactor (CLR), pre-insert resistor (PIR) and 6% detuning reactor are investigated. The results of simulations are shown that the 6% detuning reactor can reduce inrush current more than other methods.
Flocculation tests with electrophoretically separated serum proteins.
Campbell, H. A., Smith, W. K., Roberts, W. L. & Link, K. P. (1941). J. biol. Chem. 138, 1. Clayton, C. C. & Baumann, C. A. (1944). J. Nutrit. 27, 155. Davies, A. W. (1933). Biochem. J. 27, 1770. Davies, A. W. & Moore, T. (1934). Biochem. J. 28, 288. Herbst, E. J., Paveek, P. L. & Elvehjem, C. A. (1944). Science, 100, 338. Light, R. F., Alscher, R. P. & Frey, C. N. (1944). Science, 100, 225. Moore, T. & Wang, Y. L. (1943). Biochem. J. 37, viii. Moore, T. & Wang, Y. L. (1945). Biochem. J. 39, 222. Overman, R. S., Field, J. B., Baumann, C. A. & Link, K. P. (1942). J. Nutrit. 23, 589. Overman, R. S., Stahmann, M. A., Sullivan, W. R., Huebner, C. F., Campbell, H. A. & Link, K. P. (1942). J. biol. Chem. 142, 941. Paveek, P. L., Herbst, E. J. & Elvehjem, C. A. (1945). J. Nutrit. 30, 1. Poumeau-Delille, G. (1943). C.R. Soc. Biol., Pari8, 137, 604. Tomaszewski, von W. & Engel, C. (1939). Z. VitaminforWch. 9, 238. Vedder, E. B. & Rosenberg, C. (1938). J. Nutrit. 16, 57. Yudkin, S. (1941). Biochem. J. 35, 551.