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Oilfield

At present, most of the oil production plant in China has entered the late development stage, Comprehensive water cut has reached more than 80%, part of oilfield is more than 90%. With the rising of water cut, total fluid volume keeps increasing, power consumption is growing rapidly. As the oilfield gird usually use trunk type and emanant, it’s simple and less cost, easy operation. The question is when the line is too long, the line terminal voltage is too low, which makes pumping unit (asynchronous motor) can’t work at the rated voltage, th...

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Principle

1. Safely improve power factor, avoid power factor’s examination penalty from power supply department;
2. Save energy and reduce consumption, reduce the unit consumption cost of power;
3.Reduce damage from harmonic to electric device, secure the steady operation of distribution device and reactive power compensation device;
4.Increase the using efficiency of system capacitance and distribution device;

1.The distribution line of the oil drilling working surface is made up of many lines, each distribution line supply power radial from one terminal transformer 6（10）KV bus, long line and big loss.
2.Main load of taking oil is large power motor, normally started by AC invert driver or self voltage drop. AC invert driver will produce large harmonic of 5times, 7times and 9times, current harmonic distortion THDI reach 30% above.
3.Motor’s power factor is low

1.The distribution line of the oil drilling working surface is made up of many lines, each distribution line supply power radial from one terminal transformer 6（10）KV bus, long line and big loss.
2.Main load of taking oil is large power motor, normally started by AC invert driver or self voltage drop. AC invert driver will produce large harmonic of 5times, 7times and 9times, current harmonic distortion THDI reach 30% above.
3.Motor’s power factor is low

Suggestion is to use fast filter compensation to make local harmonic control and reactive power compensation :

1.Use fast filter compensation device, not only can improve power factor, also can control the 5times, 7times, 9times harmonic

2.Use harmonic voltage suppressor to control the 5times, 7times and 9times harmonic voltage