HFPC high-voltage filtering and compensation equipment

Overview

In the industrial and mining enterprises, rolling mill, mining hoist, large pumps, power cell and the electric railway and other equipment using rectifier, inverter and other nonlinear loads have introduce high Harmonic current into power grid during operation, which cause voltage distortion, and threaten the safe operation of electrical equipment in power supply system. MECC PHAYSE has designed HFPC to absorb Harmonic and compensate reactive power at the same time. It not only can absorb high-order harmonic, meeting the national standard requirements, but can also improve the Power Factor, and save energy.

HFPC is a ideal equipment for suppressing harmonic "pollution", improving power quality, saving energy and raising the economic efficiency.

Features

The compensation filtering equipment adopts all partial single-tuned harmonic filter method to avoid frequency oscillation or resonance, so to make all branches appearing capacitive, and thus making the power Systems and harmonic assemblies safe.

HPJK-A reactive power compensation control and protection device, developed by our company, can test and calculate Power Factor and reactive power online. It can automatically (or manual) switch on or off by the power factor's two threshold set by the customer (like 0.92 for switching on and 0.98 for tripping);The switching mode must be stack switching, which means FILO.

HPJK-A can monitor and protect all branches of capacitors;

Configure high-voltage vacuum contactor, which has the advantage of large breaking capacity and no rekindling problem.

Configure MOA for over-voltage.

Equipped with SAMWHA Capacitor or other imported brands, or domestic-made high-quality full-film dielectric power capacitors, which have advantage such as high reliability, long lifetime, low power loss, low temperature rise.

Equipped with high-voltage expulsion fuses or current limiting fuses on each capacitor as a short-circuit protection to ensure safe operation of equipment.

Equipped with the voltage transformer (or discharge coil) as discharge circuit for each capacitor, with voltage transformer in the equipment, the voltage on each capacitor can be reduced to below 50V, after 5 seconds.

Equipped with high-voltage monitors, and electromagnetic locks, which have a mandatory locking function, to ensure security during operation or maintenance. And equipped with observation windows and cabinet lighting, so customer can monitor the operation of the equipment at any time.

The compensation equipment is cabinet structured, which is sprayed by the corrosion-resistant rust, making it more durable

Protection of equipment

Our self-developed HPJK-A reactive power compensation control and protection device can control and protect HFPC.

HPJK-A is composed of controller, protection unit and display unit.

Controller could provide equipment protection, it samples the voltage and current, when over-voltage, under-voltage or total harmonic exceeds a set value, all branches of the capacitors are removed to protect the equipment from damage. The switching mode must be stack switching, which means FILO.

Protection unit could provide protection of each branch, the unit samples three-phase current signal and provide over-current protection; It samples the zero-sequence capacitor signals and provide over-voltage protection. It also read current-limiting fuses' contacts and NCS contacts. When fault occurs, the particular branch are trip, and send back the fault through passive contact and RS485 communication port to control room.

In addition to the stack switching, if lower order filter branches breakdown, the higher order filter branches must be switched out of operation at the same time.

All the settings and delay values are provided by us.

Compensation Effect

Harmonics meet GB/T14549-93;

Power Factor above 0.92;

Reducing the loss of line and transformer, and improving the capacity of power transmission equipment, and extending life expectation of the equipment;

Condition of Use

installation: Indoor (Cabinet / Frame Type)/Outdoor (Frame Type)

Temperature: -40℃～+45℃ (capacitor's temperature range are chosen by need)

Altitude: Less than 1000m (above1000m should adopt plateau-type components)

Humidity : ≤95% (at 25℃)

No explosive or flammable medium surrounding; no corrosive gas to damage the insulation and the metal; no conductive dust; No severe vibration and shock at the installation site.

Implementation and reference standard

IEC 60871-1 ed3.0

GB/T 11024.1-2010

GB 50227-2008

GB/T 12325-2008

GB/T 12326-2008

GB/T 14549-1993

DL/T 604-2009

DL/T 840-2003

JB/T 7111-1993

Q/MECC 001-2005

Main technical performance

Can operate continuously under 110% of rated voltage, but no bigger.

Can operate continuously under 130% of rated current, provided with rated frequency and voltage.

Rated current can be computed by the capacitor's rated volume and voltage.

Degree of Protection: Indoor (IP2x to IP4x); outdoor (up to IP41)

Withstand Voltage: in Accordance with GB 50150-2006.

Insulation: 2500V mega-Ohmmeter (10,000 MΩ range) check the main circuit insulation resistance of the relative should not be less than 1000 MΩ

Keywords: HFPC high-voltage filtering compensation equipment

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