Contact us | 中文版

+86 531 82670172

The solution

Location :Home > Sea port

Sea port

Port load introduction

In recent years, most port enterprises used thyristor reactifier and variable current equipment which case serious bad power supply quality. What is more, the high order harmonics produced by them has formed series or parallel resonance with the grid system capacitance and resistance under certain condition. Thus lead to serious damage of some equipment.

Typical non-linear loads

1.Large gantry crane, container shore bridge(mainly cause high order harmonics, 5th, 7th and so on)

2. Gas discharge type lighting device( 3rd harmonic)

3. Computer or other office facilities.

Harmonic effects

1.Harmonic will effect grid stable operation, and reduce the power supply quality;

2.Harmonic will increase capacitor loss power, shorten the service life of capacitor or even explosion, harmonic will also increase power loss of transformer;

3.Harmonic will cause the power loss increase of electric rotating machinery,cause over heating, noise and harmonic over voltage, if much serious, the machinery will be damaged

4. The harmonic maybe couple to  weak current system through  electro-magnetic induction, electrostatic induction and so on. So the weak current system maybe interferenced.

Typical site reference

This port has portal crane loads which is fast changed. And it is unable to use normal type reactive power compensation equipment to improve power factor. Also harmonic cause high transformer loss and active power loss. This customer pay much electricity bill each month and have to pay RMB20000 each month as interest penalty caused by low power factor. To save power and energy, they invested to install power quality solution equipment-active power filter and dynamic reactive

Power compensation system.



相關案例

河内5分彩全天计划软件 卖饭包赚钱吗 如今这个社会做什么行业赚钱 绑架赚钱 米面加工能赚钱吗 海王捕鱼机 捕鱼来了怎么蹲核弹鱼 欢乐麻将单机版 家里有辆面包车怎么赚钱 加盟七田右脑赚钱么 安卓2.2捕鸟达人 手机刷刷屏就赚钱吗 趣赚养猪真的能赚钱吗 微信捕鱼红包的游戏 剑网3副职业赚钱 怎么用黑科技赚钱 为什么赚钱要到一线城市