HPDAS331/341 type power harmonic monitoring terminal and system

The HDPAS331 power harmonic monitoring terminal is a new device suitable for pollution monitoring and management of power users. The new device can monitor the current values of harmonic injection current, distortion rate, etc. in real time, and can also monitor the harmonic pollution emissions of users through positive and negative harmonic active power and positive and negative distortion reactive power. At the same time, the device can also monitor the harmonic frequency with high content and line loss, providing information support for harmonic pollution control. The device also has complete communication and harmonic management functions, successfully solving the long-standing problem of user harmonic monitoring and management in the power system.

The indicators monitored by HPDAS331/341 include: peak, valley, and normal periods of positive and negative harmonic active energy, as well as total positive and negative harmonic active energy; Voltage and current distortion rate; 2-31st harmonic current content; Unit resistance harmonic line loss degree; The harmonic order of the top three units of resistance line loss and the degree of harmonic line loss; Total injected harmonic current; Harmonic current exceeding the limit time; Current imbalance; Last power outage time; Effective values of total forward and reverse reactive power and interharmonic current, etc

Overall dimensions:307 × 188 × 80mm (height × width × depth)

execution standard

• GB/T14549-93 "Electric Energy Quality - Harmonics in Public Power Grids"
• GB/T15543-1995 "Electricity Quality - Allowable Unbalance of Three phase Voltage"
• GB12325-1990 "Power Quality - Allowable Deviation of Supply Voltage"

International Electrotechnical Commission (IEC) standards

• IEC61000-3-6 Electromagnetic Compatibility Series Standards

Main technical parameters

Input electrical parameters

Voltage: 3 × 57.7 V, 3 × 220 V, allowable deviation -20% to+15%
Frequency: 50Hz, allowable deviation -6% to+2%
Basic current: 5A

working environment

Atmospheric pressure: 86-108KPa;
Environmental air temperature: -10 ℃ to+45 ℃;
Relative humidity: 5% to 95%.

The HPDAS series power quality monitoring terminal is equipped with RS485 serial port, infrared, GPRS and other communication interfaces, which can achieve on-site or remote automatic meter reading. Adopting a large screen dot matrix graphic LCD with backlight display screen to simultaneously display battery level and parameters, the display is intuitive and clear, making meter reading convenient. It can be connected to an external infrared portable printer to print various data in real time, with power failure protection function. After power failure, it can quickly save the power data, and the data can be saved for ten years without loss. In addition, the system is equipped with comprehensive harmonic management and report printing functions.

HPDAS series power quality monitoring provides three communication methods for users to choose from

1. Utilize public network communication methods
2. Utilize LAN/Ethernet communication methods
3. Utilize the public network and set up communication methods for on-site monitoring computers

Scope of application:

• Power supply department
• Large industrial and mining enterprises (steel mills, smelters, petrochemical plants, electrified railways, etc.)