Magnetic Controlled Reactor (MCR)

Application areas:

1. Electrified railway:

The SVC device based on MCR is the best solution for achieving load tracking control and improving power factor in electrified railway traction substations. Due to the instantaneous nature of the load on the traction substation of electrified railways, when electric locomotives pass by, the load suddenly appears, and after the train passes, the load disappears. Using traditional switch switching capacitors will result in hundreds of switch switching actions in a traction substation every day, seriously shortening the service life of electrical equipment, and the asymmetry of electrified railways causes serious negative sequence components. The use of SVC devices based on MCR in traction substations can effectively reduce asymmetry, decrease negative sequence components, and eliminate safety hazards in the power grid.

2. Coal and Chemical Industry:

There are a large number of intermittent impact loads such as elevators in coal enterprises in our country, which not only cause significant fluctuations in reactive power but also serious harmonic pollution. If these problems are not addressed, it will lead to poor power quality and severe harmonic pollution, as well as fines for exceeding power factor and harmonics. When using capacitor switching reactive power compensation devices, two situations may occur: when the reactive power or power factor is set too low, although it can ensure that these lifting devices do not switch frequently during operation, it will cause a sudden decrease in the power supply voltage of electrical equipment underground, affecting the normal operation of electrical equipment and its protection and control equipment; If the reactive power or power factor setting value is high, frequent switching of capacitor banks may occur, which can easily cause damage to electrical equipment and affect its service life. The use of MCR type high-voltage dynamic reactive power compensation device is an ideal solution to solve this problem.

In addition, in coal and chemical enterprises, due to the existence of some hazardous factors (such as gas under coal mines and explosive gases in chemical plants), the use of traditional switch switching methods reduces the safety of working in these environments due to various factors such as sparks generated during mechanical action and damage to capacitor banks caused by impact. However, static reactive power compensation devices using magnetic controlled reactors can work safely in hazardous environments for more than 20 years without any mechanical operation.

3. Metallurgy:

The rolling mill and electric arc furnace loads in metallurgical systems are extremely special loads that can change from very small values to very large values in a very short period of time (less than 1 second), and the frequency of change is very fast. This can cause the display instruments in these enterprises to constantly swing at high speed, making it impossible to read, and the factory lighting keeps flashing. Traditional capacitor switching reactive power compensation devices cannot solve this problem, and autotransformer type dynamic reactive power compensation devices cannot solve this problem. Only static reactive power compensation devices based on magnetic reactors or TCR type static reactive power compensation devices can be used to solve this problem. The SVC device based on MCR is an ideal choice for reactive power compensation in the power supply system of rolling mills and electric arc furnaces in metallurgical systems. The fast response capability of MCR ensures the improvement of power factor and power quality for these systems, with high reliability and excellent industrial performance, providing guarantees for the safe and reliable operation of the power supply system. The high availability rate improves production efficiency, quality and benefits, and the extremely long equipment service life ensures long-term returns. Compared with other traditional high-voltage reactive power compensation devices used for rolling mills and electric arc furnaces, MCR type SVC has obvious advantages such as high reliability, low infrastructure costs, small footprint, low maintenance costs, and reasonable equipment costs.

4. Wind Farm:

The SVC device based on MCR is applied to the continuous, contactless, and dynamic regulation of reactive power in wind farm substations, improving the power factor of the system, reducing the reactive power exchange between the wind farm grid access point and the grid until it reaches zero, achieving dynamic reactive power balance of the system, and meeting the requirements of national standards for wind farm access to the grid. Filter out harmonic currents to ensure that the harmonic currents and voltages of the wind farm meet the national standard requirements. MCR type SVC can also suppress voltage fluctuations in the power grid, stabilize voltage, and reduce the adverse effects of power quality on wind turbines. When the system experiences voltage drops, it can quickly adjust reactive power output and promote voltage recovery. Considering the remote geographical location, harsh operating environment, and few maintenance personnel of wind farms, the MCR type high-voltage dynamic reactive power compensation device is an ideal choice for wind farms to achieve dynamic reactive power compensation.

5. Power Substation:

For a large number of substations in our country, the low utilization rate of capacitors and the problem of complicated switching management are widely present. The installation of a large number of VQC devices can automatically control the on load tap changers, capacitor banks, and reactor switching switches of transformers, but it can easily lead to frequent switching actions of capacitor banks and on load tap changers, reducing equipment life and increasing safety hazards. Installing MCR on the basis of the existing reactive power compensation system will greatly improve the reactive power compensation effect, reduce or even avoid switching operations, save energy and reduce consumption, and improve power quality. Installing MCR type dynamic reactive power compensation devices in hub substations can significantly improve the transient stability capability of the power grid and enhance the voltage stability level of the power grid.

Special industrial users

6. Some textile enterprises (such as silk textile factories) and cathode ray tube manufacturing factories (such as Ancai) have high requirements for the quality of their processed products and the voltage quality of the power grid. Sudden drops or drops in voltage quality can cause a large amount of waste in their products. The use of MCR type static reactive power compensation devices can improve their voltage quality in a short period of time.

Product Standard:

GB/T 1094.6-2011     IEC 60076-6：2007

GB/T 1094.1-2011     IEC 60076-1：2011

GB/T 1094.3-2017     IEC 60076-3：2013

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