Power compensation and energy saving application of oil well generator based on energy storage flywheel

doi:10.19799/j.cnki.2095-4239.2020.0331

Abstract

Abstract:

Based on the power supply system of oil field, this paper studies the problem of insufficient power response of generator in the case of frequent load increase and decrease and large load shock value. Based on the technical characteristics of the energy storage flywheel, the power demand of the winch is compensated by the energy storage flywheel. Aiming at the existing problems, this paper carries out the objective optimization design and proposes a power slope distribution regulation scheme for winch, and builds a specific experimental platform for verification. Experimental results show that, input flywheel makes the power curve of the generator better smooth, reduces the power input of the unit about 500kW, improves fuel efficiency and power quality, at the same time, the potential energy of the drilling process is recycled,the effect of energy conservation and emission reduction is achieved.

Key words: flywheel energy storage, power response compensation, energy recovery

CLC Number:

TM 352

Baohong ZHU, Guangjun LI, Shusheng LI, Yadong CUI. Power compensation and energy saving application of oil well generator based on energy storage flywheel[J]. Energy Storage Science and Technology, 2021, 10(3): 1088-1094.

Figures/Tables 19

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Table 1

The classification of working status"

绞车功率 $P / k W$	功率斜率 $f$	速率 $v$ /r·min^-1	状态
$P$ >20	$f$ > $=$ 0.8, $f m a x = 1$	$v$ <-20或 $v$ >20	快加速
$P$ >20	0.4< $f$ <0.8	$v$ <-20或 $v$ >20	中加速
$P$ >20	0.1≤ $f$ ≤0.4	$v$ <-20或 $v$ >20	慢加速
$P$ >20	-0.1< $f$ <0.1	$v$ <-20或 $v$ >20	匀速
-20< $? P$ <20	-0.1< $f$ <0.1	-20< $v$ <20	停止
$P$ <-20	默认等于-1	$v$ <-20或 $v$ >20	制动

Table 1

Table 2

Power allocation"

状态	飞轮功率(主动)	发电机功率(被动)
快加速	P_W₁=P_W₂+ $? P$	P_f₁ $=$ P_f₂
正常加速	P_W₁=P_W₂+ $? P$ * $f$	P_f₁ $=$ P_f₂+ $? P$ * $(1 - f)$
慢加速	P_W₁=P_W₂	$P f 1$ $=$ $? P f 2$ + $? P$
匀速	P_W₁=P_W₂- $? P'$	P_f₁ $=$ P_f₂+ $P'$ + $? P$
停止	P_W₁=P_W₂+ $? P'$ （P_W₁≤ $? M a x$ ）	P_f₁ $=$ P_f₂+ $P'$
回馈制动	P_W₁=P_W₂+ $? P$	P_f₁ $=$ P_f₂

Table 2

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