Abstract
The water electricity stands the process inside of the direction electric power system power supply, should still guarantee the electric voltage in addition to guaranteeing the dependable of the power supply with the stability of the electric current frequency. Because the variety of that customer carries, make the electric voltage and frequency of the system power supply also taken place ,then the generator equip of encourage magnetic field regulate to make the generator carry the electric voltage to recover then and automatically and keep within the scope of prescriptive; The frequency regulate to be adjusted by water machine .
In electric power system , because the variety of the burthen causable the frequency variety serious, will seriously influence the power supply quantity, make the quantity of products descent of the electric power customer and the normal production suffers breaked. Therefore, the frequency of the our country provision electric power system should keep in a frequency for±Hz/s deviation value should not exceeding 0.5 Hz/ s, to big electric power system deviation value should not exceeding ±0.2Hz/s.It beg the machine a demand for, at the time of system carrying
variety, it can quickly changing its importation measuring, the outsider burthen in orientation that make that undertake the burthen in the system, and make at the same time the frequency instauration of the electric power system with keep scope in admission scope.
Keywords: electric current electric voltage frequency load charge
