uggs online SJ-800 Microcomputer Excitation of gen

43nike9485qt

SJ-800 Microcomputer Excitation of generator short-circuit test methods

Short-circuit test unit. A short circuit test generator test purposes is a certain rotor speed or the stability of the rated speed, the stator three-phase short circuit outlet, measured between the stator current and rotor current test; purpose is to check the symmetry of the stator phase current, check the power rotor circuit is normal. Generator short-circuit the armature reaction is to flux, and the magnetic potential to the larger magnetic, synthetic magnetic potential is very small, so a straight line generator short circuit. Combined load performance test can determine the generator synchronous reactance Xd and the short circuit ratio and the main characteristics of K and other parameters. 2, No. 1 test connection on-site wiring short-circuit test generator (see Figure 1). r-\ +, one by one, v,, 10.5K--n, l:; Guangdong I. __1. Bu t_,,, Y,. =,, A, lr, y == y a, a ,10-5KV West circuit test connection diagram in Figure 1 column 1 generator 10.5kV outlet to export 501 units of three-phase hard switching bus, and in the generator outlet with a 900ulIli × 80nln'l × 8mm copper busbar shorted. With a 3 × 70mm2 · 46 · +1 × 351nt ~? The high voltage cable to exit switch unit 1 generator and exciter PI. And the excitation transformer connected, the use of 1 power transformer down to excitation PI. And the excitation transformer, providing PC Lai SHP 1, 2005 (Total 121) application of voltage synchronous magnetic system, measurement, regulation and excitation power. The introduction of short circuit test requirements 3 PC No. 1 Excitation CT secondary circuit of the generator stator, so that computer can not measure the excitation regulator active and reactive power, so that the regulator had lost incentives and limit the role of low excitation . Secondary side of PT-phase excitation, respectively, about lkQ by three sliding resistance resistor divider line voltage of about 15V or so into the voltage regulator for synchronous measurement and regulation,[link widoczny dla zalogowanych], and thus avoid measuring voltage greater than 20V excitation circuit automatically when the off, building pressure failure. Also quit the 1st generator overload protection, and during the trial, to 20% when the excitation current rating should check the symmetry of the stator phase current. When I rose to stator short-circuit current rating, it should reduce the stator current as soon as possible to avoid overheating the stator. 4-site test methods and the short circuit test is completed by checking the correct connection, the operating speed machine manipulator manually open the unit to the rated speed, short circuit switch 1 generator export orders, the SJ a counter board 800 adjust the \place the handle \Place about 5% of the minimum rotor current rating, the manual switch and close the excitation input excitation power. 1 generator automatically close the exit switch,[link widoczny dla zalogowanych], check the voltage to normal excitation transformer, input excitation power cabinet anode switch,[link widoczny dla zalogowanych], adjust the secondary side connected to the excitation PT 3 lkl2 the slide resistance, so that excitation PT, PT Voltage Instrument input of about 15V or so. Excitation \and then gradually Touch \5 short-circuit test data and curves 5.1 Experimental results (see Table 1). Table 1 Short-circuit test data I (A) 1B (A) lc (A) Is (A) IL (mV) IL (A) UL (V) 7.17.67.67.420.520570 shunt in Table 1 Specifications To 750M75mV; Is the average for the generator stator phase current, IL for the rotor excitation current values. 5.2 Data from Table 1 to short-circuit curve (see Figure 2). / /. //////。 / / / 0306090120150 short-circuit characteristic curve in Figure 2 6 Conclusion The results from the short-circuit characteristics (Table 1) shows that generator 1,[link widoczny dla zalogowanych], the symmetry of the stator phase current well. At the same time on-site use of computer self-shunt thyristor excitation system short-circuit test generator is complex and difficult. lI. (A) ■ Liu Zhihong (1967 a), male, engineer, Guangdong, Guangdong, current vice president of River Power company, mainly engaged in electrical maintenance and operation of production management and technical management. Emad: 1zh8566 @ tom. eolll · 47 · J. How ~~~~\ More articles related to topics：

Tory Burch Shoes Electricity load centers in the r

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]