Shanghai Zhiyou
Water cooled Reactor
Water cooled Reactor
Water cooled reactor is an electrical equipment used for
reactive power compensation and current limiting in power systems. It
effectively reduces equipment operating temperature, improves stability and
lifespan through water cooling. Its core functions include suppressing
harmonics, balancing reactive power, and limiting short-circuit current, and it
is widely used in high current scenarios such as high-voltage direct current
transmission (HVDC), frequency converters, and arc furnaces.
Technical Characteristics
Cooling method: Adopting a closed water circulation
system, the cooling efficiency is increased by 30% -50% compared to air
cooling, and the temperature rise can be controlled below 45K.
Structural design: usually iron core type, winding made
of copper foil or flat copper wire, insulation level of H (180 ℃), and shell
made of stainless steel to prevent water corrosion.
Performance parameters: The rated current can reach
several thousand amperes (such as 5000A), the reactance value range is 1%
-100%, and the ability to withstand short-circuit current is up to 50kA/1s.
Application scenarios
In the industrial field, high-power frequency conversion
equipment such as rolling mills and electrolytic aluminum need to be matched
with PLC systems to achieve dynamic compensation.
New energy: In SVG devices for photovoltaic/wind farms,
suppress grid connected harmonics (THD<3%).
Rail transit: The 24 pulse rectification system of the
traction substation, with a voltage level of 35kV.
Selection precautions
Water quality requirements: The water resistance of the
cooling water should be greater than 5M Ω· cm, with a pH value of 6-8, to
prevent scaling or electrolytic corrosion.
Installation specifications: The inclination angle should
be ≤ 5 °, and shock-absorbing joints (vibration displacement<0.1mm) should
be installed on the inlet and outlet pipes.
Maintenance cycle: Check the sealing of the waterway
every 6 months, and clean the filter if the flow deviation exceeds ± 10%.
Industry standard
Meets the requirements of IEC 60076-6 (reactors) and GB/T
1094.6 (cooling systems), with a protection level of IP54 or above. There are
parallel reactors available in the store now, which have ISO9001 certification,
dry-type insulation structure, and 10kV system voltage adaptation capability,
suitable for current limiting needs in terminal distribution scenarios. Welcome
to contact us to provide you with the best solution.
Detailed Introduction to Water cooled Reactor for Power
Equipment
Overview
A water cooled reactor is a type of reactor widely used
in the field of power equipment, especially in high-voltage and
extra-high-voltage applications. In electrical systems, a water cooled reactor
is designed to limit short-circuit current, filter harmonics, or control
reactive power. Unlike air-cooled designs, a water cooled reactor employs
circulating water as the cooling medium, which provides highly efficient heat
dissipation and allows the reactor to operate continuously under heavy
electrical loads.
Structure and Design
The structure of a water cooled reactor generally
includes the winding, core (or air-core in some designs), cooling pipes, and
water circulation system. The winding of a water cooled reactor is made from
copper or aluminum conductor, around which water channels are embedded or pipes
are mounted. During operation, the winding of the water cooled reactor
generates heat due to current flow, and the water directly absorbs this heat,
keeping the reactor at a safe temperature. This compact design makes the water
cooled reactor ideal for installation in power substations, converter stations,
and industrial power supply systems.
Working Principle
The water cooled reactor works on the principle of inductive reactance. By introducing inductance into the power circuit, the water cooled reactor effectively limits fault currents, suppresses harmonics, and improves system stability. As current flows through the coil of the water cooled reactor, magnetic flux is generated, creating inductive impedance. This impedance restricts rapid current surges and ensures stable operation of electrical networks. At the same time, the cooling water system of the water cooled reactor maintains constant thermal balance, preventing overheating even during peak load conditions.
Applications in Power Systems
The water cooled reactor is extensively applied in
various areas of electrical engineering:
Current Limiting: The water cooled reactor restricts
short-circuit currents, protecting transformers, capacitors, and circuit
breakers.
Harmonic Filtering: In capacitor banks or static var
systems, the water cooled reactor is combined with capacitors to form harmonic
filter circuits.
Reactive Power Compensation: The water cooled reactor
regulates reactive power and stabilizes system voltage.
Industrial Power Supply: Large industries such as
metallurgy, smelting, and chemical processing use the water cooled reactor to
ensure reliable and efficient operation of power equipment.
Advantages of Water cooled Reactor
Compared to dry-type or air-cooled designs, the water
cooled reactor has unique advantages:
High cooling efficiency allows the water cooled reactor
to handle large currents in a smaller volume.
Compact structure makes the water cooled reactor suitable
for limited installation spaces.
Continuous operation is possible under high-load
conditions.
Long service life is achieved due to controlled operating
temperatures.
Conclusion
In the field of electrical power equipment, the water cooled reactor plays a vital role in ensuring system safety, efficiency, and stability. By combining advanced inductive technology with effective water cooling, the water cooled reactor offers superior performance in current limiting, harmonic filtering, and reactive power compensation. With the growing demand for high-capacity and reliable power systems, the water cooled reactor will continue to be an essential solution in substations, industrial facilities, and modern smart grids.
