HGL HarmonicGuard Low Capacitance

The First Low Capacitance Harmonic Filter with Contactor Controls

HGL with PQconnect is the first intelligent low capacitance filter to offer harmonic mitigation that automatically detects excess kVAR while also allowing remote monitoring and control.

  • Offers the lowest kVAR per horse power filter on the market, allowing for superior generator compatibility
  • Ensures IEEE-519 2014 compliance with true 100ka SCCR rated filters

The HGL with PQconnect offers harmonic mitigation while providing less capacitance to the system. It features generator compatibility with intelligence, eliminating any worry over leading power factor or excess kVARs interfering with your generator. Due to the reduction of reactive power, the HGL allows for lower power, cost-efficient generators to be used.

The HGL also features components designed specifically for oil and gas field applications, to handle the additional electrical stress. These units are available in Type 3R enclosures and are designed for cyclical loads, with HP ranges from 40 to 200 HP.

Harmonics and Power Quality

Issues caused by harmonics may include:

  • Transformer and distribution equipment overheating
  • Random breaker tripping
  • Sensitive equipment failure
  • Poor power factor
Unfiltered Waveform
Filtered wave form with HGL

HGL with PQconnect Advantages

The HGL harmonic filter is a field-proven low capacitance harmonic filter designed to meet your specific industry requirements. This filter not only limits current distortion to less than 5% TDD, it also improves true power factor. Multiple package options will allow you to choose the right filter configuration for the application. 

With the addition of PQconnect, the HGL filter features:

Generator Compatibility with Intelligence

The HGL with PQconnect is the most generator compatible harmonic filter with intelligence. The filter autonomously controls its tuning circuit contactor based on your input system to ensure worry-free operations for generator-based systems.

Industrial Strength

The HGL with PQconnect is built in the USA, using high quality components. It delivers the best in class performance under the harshest conditions and in the most challenging applications.

Serial Communication

The PQconnect provides data monitoring and status of the filter to your SCADA system. The filter will communicate informational alerts to ensure your system stays running and resolves power quality issues.

Filter Status Detections

With PQconnect, you can receive alerts before problems occur. Users will be notified if issues were to arise, including on the components of your filter. This will prevent unnecessary downtime and will alert the user when capacitors are nearing end of life.

PQvision Software Application

A desktop application created by TCI for PQconnect data

The PC app gives you visibility into:

  • Real-time filter line/load voltage and current metering values
  • Real-time THID and THVD
  • Voltage and current waveforms
  • Harmonic spectrum
  • Filter status detections

Click here for the PQvision software (A free download
application provided by TCI).

IEEE Standard 519 – 2014

Every power system is different. Harmonic mitigation requirements differ and even IEEE limits change based on the system loading characteristics. The HGL product returns the power of choice to the customer, allowing for different configurations to achieve different performance and monitoring results.
 

Current distortion limits for systems rated 120 V through 69 kV

Maximum harmonic current distortion in percent of IL
Individual harmonic order (odds harmonics) a,b

ISC/IL3≤h<1111≤h<1717≤h<2323≤h<3535≤h≤5050 TDD
<20c4.02.01.50.60.35.0
20<507.03.52.51.00.58.0
50<10010.04.54.01.50.712.0
100<100012.05.55.02.01.015.0
>100015.07.06.02.51.420.0
a. Even harmonics are limited to 25% of the odd harmonic limits above.
b. Current distortions that result in a dc offset, e.g., half-wave converters, are not allowed.
c. All power generation equipment is limited to these values of current distortion, regardless of actual ISC/IL.
where ISC = maximum short-circuit current at PCC.
and IL = maximum demand load current (fundamental frequency component) at the PCC under normal load operating conditions.