Rahman, Saifur “Electric Power Generation: Non-Conventional Methods” The Electric Power pdf

... regions of the reactive capability curve. FIGURE 2.8 Vee curves. © 2001 CRC Press LLC © 2001 CRC Press LLC Ramakumar, Rama Electric Power Generation: Conventional Methods” The Electric Power Engineering ... determined by the way the generator is connected to the power system. If the generator is connected directly to the power system, a resistor or inductor co...

Ngày tải lên: 05/03/2014, 16:20

... maximum power point. The PCUs act as current sources, synchronized by the utility © 2001 CRC Press LLC Rahman, Saifur Electric Power Generation: Non-Conventional Methods” The Electric Power Engineering ... anode to the cathode through the outer circuit. At the cathode the oxygen molecule interacts with the hydrogen ion and the electron from the outsid...

Ngày tải lên: 05/03/2014, 16:20

... given market share The larger the absolute value of (the price responsiveness of the customers), the closer the hyperbole remains to its asymptotes, i.e. the supply price exceeds the marginal cost ... segments, the general equilibrium condition (5-12) may be written explicitly: Thereby the suppliers have been given the indices 1 and 2 and the market segments the indic...

Ngày tải lên: 31/12/2013, 22:20

... operation. The kind of fuel, the rate at which it is fi red, the method of fi ring, the form and thickness of the fuel bed in the case of coal, the way air is supplied, the size of the furnace and the ... vanes of the wheel imparts its energy to the wheel causing it to rotate and do work. The greater the fl ow of water, the greater the speed of rotation of the...

Ngày tải lên: 03/01/2014, 22:44

... function of the number of turns in the windings, the current in the windings, the leakage field, and the geometry of the core and windings. The magnitude of the leakage reactance is usually in the range ... resistance of the conductors and leads. • Eddy losses. These losses are caused by the leakage field, and they are a function of the second power of the leakage...

Ngày tải lên: 05/03/2014, 16:20

... (OHGWs) on either side of the structure. Based on the voltage level of the line, the conductors and OHGWs are configured to provide, at least, the minimum clearances mandated by the National Electrical ... used for the selection of the number of insulators when the line is designed. The insulation can be laboratory tested by measuring the dry flashover voltage of the ins...

Ngày tải lên: 05/03/2014, 16:20

... gradually disappear with the decay of the DC component of the fault current. The relay may then operate eventually when the restraining harmonic component is reduced. These relays usually include ... isolate a transformer from the electric system, there is often an immediate urgency to restore it to service. There should be a procedure in place to gather system data at the tim...

Ngày tải lên: 21/03/2014, 12:08

... circumstances and the following situation will then develop: 1. When the field supply is removed, the generator real power will remain almost constant during the next seconds. Because of the drop in the excitation ... the frequency or the speed of the generator (Benmouyal, 1989). A second technique keeps the sampling period fixed, but varies the time length of the data...

Ngày tải lên: 21/03/2014, 12:08

... between the currents at the ends of the line. If the currents are essentially in phase, there is no fault in the protected section. If these currents are essentially 1808 out of phase, there is ... prevent the fault. Its primary purpose is to detect the fault and take the necessary action to minimize the damage to the equipment or to the system. The most common paramet...

Ngày tải lên: 21/03/2014, 12:08