What is The Phase Leading Operation of Generator?

The generator is a mechanical equipment that converts other forms of energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or atomic Nuclear fission into mechanical energy and then transfers it to the generator, which converts it into electrical energy. Generators have a wide range of applications in industrial and agricultural production, national defense, technology, and daily life. The so-called phase leading operation of generators refers to the stable operating state of generators emitting active power and absorbing reactive power.

When the generator is running in phase, four main issues should be noted:

First is a decrease in static stability.

The second is that the end leakage magnetic field causes an increase in the temperature of the stator end.

Thirdly, the voltage of auxiliary power decreases.

Fourthly, due to the decrease in terminal voltage and the increase in stator current of the generator without changing the output power, it is easy to cause overload.

(1) During phase leading operation, due to the generator's phase leading operation, the internal potential decreases and the static reserve decreases, resulting in a decrease in static stability.

(2) Due to the output power of the generator P=EdU/Xd · Sin δ， During the leading phase operation, both Ed and U decrease, and with the output power P unchanged, the power angle δ Increasing also reduces the level of dynamic stability.

(3) During phase leading operation, due to the armature reaction of the auxiliary magnetic field, the end leakage of the generator increases, causing an increase in the temperature of the stator end. The end leakage flux of the generator is the combination of the end leakage flux of the stator winding and the end leakage flux of the rotor. During leading phase operation, due to the phase relationship between the two magnetic fields, the synthesized magnetic flux is larger than during non leading phase operation, resulting in an increase in the temperature at the end of the stator.

(4) The reduction of auxiliary power voltage, which is generally introduced from the generator outlet or generator voltage bus. During phase leading operation, due to the reduction of generator excitation current and reactive power flow reversal, the terminal voltage decreases and the auxiliary power voltage decreases.

Guangxi Dingbo Power Equipment Manufacturing Co.,Ltd was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Dingbo has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.

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Created on Aug 4th 2023 05:41. Viewed 72 times.

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