Konstanz Electric High Voltage Dynamic Reactive Compensation SVG Complete Unit Settled in Shanxi Poly Yufeng Coal Industry Project

Guided Reading

In the coal mining industry, mechanized operation is gradually replacing manual operation. These high-power electrical appliances will generate a large amount of reactive power between them and the ground power supply during use. These reactive power will make these large-scale mechanical equipment unable to get sufficient power supply guarantee, thus affecting production operations and their safety. At this time, reactive power compensation is particularly important. As a coal mining enterprise, Shanxi Poly Yufeng Coal Industry Co., Ltd. adopts our high-voltage dynamic reactive power compensation SVG complete set device to achieve the goal of safe electricity use, energy conservation and increased benefits.

Enterprise overview

Shanxi Poly Yufeng Coal Industry Co., Ltd. is a subsidiary of Poly Energy Holding Co., Ltd. under China Poly Group. It has an approved production capacity of 900000 tons/year, a mine area of 9.6802 square kilometers, a high-quality coal reserve of 110 million tons, a reserve of 96.85 million tons, a design service life of 43 years, and is approved to mine 2 # and 10 # coal seams. The coal belongs to high-quality main coking coal, which is a good coking coal. In the safety credit rating of coal mining enterprises in 2012, it was rated as Class A enterprise by Linfen Coal Industry Administration.

Power quality problems, hazards and solutions in coal mining

With the increase of mining power load, the power factor decreases and the terminal voltage is low, which directly affects the safe power supply of the whole mine. At the same time, with the improvement of coal mining mechanization, high-power electrical equipment continues to increase, especially when large loads are started, it will cause the fluctuation and flicker of electrical voltage, damage electrical equipment, and seriously affect the safety of production and power supply. To sum up, the power quality problems in the mining industry mainly include high harmonic content, low power factor, three-phase imbalance, voltage fluctuation and flicker.

So, what are the hazards of these power quality problems?

▶ Harmonics will cause unstable operation of components, motors, mechanical conveyors and other equipment. If the harmonic content exceeds the standard seriously, it may even lead to equipment damage, reduce equipment service life and increase fire risk.

▶ The three-phase imbalance will lead to the heating and abnormal operation of main electrical equipment such as transformers, and even the tripping and power failure due to temperature overrun, which will increase the loss of cables, transformers, etc. and waste electric energy.

▶ Low power factor will reduce the utilization rate of electric energy, increase the loss of line power supply, and also reduce the load carrying capacity of transformers, resulting in a decline in the utilization rate of electric energy of electrical equipment, waste of electric energy, and increase the cost of electricity for enterprises.

▶ Voltage fluctuation and flicker will cause unstable operation of motor, rolling mill, water pump, fan and other equipment, reduce reliability and efficiency. It may also give false alarm, make the contactor and relay trip and power off, interrupt the continuous operation of the production line, and cause economic losses.

Through active contact with Shanxi Baoli Yufeng Coal Industry Co., Ltd. and accounting for harmonic voltage/current, frequency, voltage deviation, power factor, etc., our staff recommended the installation of a complete set of high-voltage dynamic reactive power compensation SVG device to customers after multiple demonstrations. After the device is put into operation, it can effectively compensate the reactive power of the power grid of Baoli Yufeng Coal Industry Co., Ltd., improve the power factor, reduce line loss It can restrain the violent voltage fluctuation caused by high power load, improve the reliability of power supply, achieve the purpose of reducing loss, saving energy, and supplying power safely, and bring considerable economic benefits to enterprises.

High voltage dynamic reactive compensation SVG complete equipment

The basic principle of Konstanz KS series high-voltage static reactive power generator is to connect the self commutating bridge circuit in parallel to the power grid through the reactor, properly adjust the phase and amplitude of the output voltage on the AC side of the bridge circuit, or directly control the current on the AC side of the bridge circuit, so that the circuit can absorb or send reactive current that meets the requirements, and achieve the purpose of dynamic reactive power compensation.

Main functions:

Improve the stability of transmission line

Harmonic dynamic compensation to improve power quality

Maintain the voltage at the receiving end and strengthen the stability of the system voltage

Suppress voltage fluctuation and flicker

Compensate system reactive power and improve power factor

Suppress three-phase imbalance

Technical features:

Faster response, within 5ms

Diversified compensation functions, reactive power compensation, harmonic compensation, negative sequence compensation and comprehensive compensation

Stronger voltage flicker suppression capability, greater than 80%

Wider operating range, - 100% to+100% rated capacity

Very low harmonic content, almost no harmonic, and can filter

Small floor area, small on-site construction

In the process of project contact, the customer highly affirmed our professional technology and considerate service. From the customer's perspective, we try to meet all the customer's needs while meeting the on-site operating conditions. Within the specified delivery period, all departments fully cooperate and deliver on time. After on-site debugging and parameter setting by our technicians and compensation, the power factor reaches the standard and the compensation effect is good, which has won unanimous praise from customers!

Electric high-voltage dynamic reactive compensation SVG

1 million t/a Hebei Huafeng Energy Coking Project - with the help of Konstanz Electric high-voltage reactive power compensation complete device

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1 million t/a Hebei Huafeng Energy Coking Project - with the help of Konstanz Electric high-voltage reactive power compensation complete device

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