• facebook
  • linkedin
  • Instagram
  • youtube
  • WhatsApp
  • nybjtp

Microcomputer Harmonic Elimination Device

Short Description:

Overview

In the power system, ferromagnetic resonance occurs frequently, and overvoltage occurs during resonance, which seriously threatens the safety of the system. Ferromagnetic resonance overvoltage can occur in any system from 3 to 220 kV, especially in power grids of 35 kV and below, almost all internal overvoltage accidents are caused by ferromagnetic resonance. The overvoltage caused by ferromagnetic resonance is long-lasting and may even exist for a long time. In the frequency division resonance, the general overvoltage is not high, but the current of the PT is large, which is easy to cause the PT to overheat and explode; in the fundamental wave and frequency multiplication resonance, the general current is not large, but the overvoltage is very high, which often damages the equipment insulation. , causing a serious accident.

The power microcomputer harmonic elimination device is a new type of intelligent power resonance elimination device developed by our company. It is simple and convenient to use, requires no maintenance, can quickly eliminate ferromagnetic resonance of various frequencies, and has high accuracy. At the same time, the relevant information can be printed or transmitted to the superior monitoring system through the communication interface according to the user’s needs, which is suitable for unattended substations.


Product Detail

Video

Product selection

Product Tags

Functions and Features

●Modular design, compact structure, advanced technology, high-speed 32-bit ARM core processor ensures real-time operation and action accuracy.
●Real-time monitoring of system status, real-time calculation, accurate judgment of low-frequency, fundamental frequency, high-frequency resonance faults in the system, and timely action.
●Real-time display of three-phase voltage, opening voltage, can accurately determine grounding, overvoltage and undervoltage, resonance.
●If the resonance of the system is eliminated by damping, if it is excited again, the device can be restarted immediately to eliminate it.
●Industry standard RS-485 communication interface, can transmit the running status of the system to the upper computer in real time.
●Fault recall function, large-capacity Flash memory saves the last 30 historical fault records.
●With good electromagnetic compatibility, it is suitable for application in complex environment with strong electromagnetic interference.
●Dual hardware watchdog circuit ensures the reliability of software operation.
●Chinese LCD display, clear running status, menu-based operation, easy to use.

Device Terminal Description

A

illustrate

A1 AC/DC
A2 AC/D
A3 PT opening*
A4 PT opening
A5 Alarm public terminal
A6 Earth alarm
A7 Over/under voltage alarm
A8 Resonance alarm
A9 Fault alarm
A10 Device shielding ground
A11 485A
A12 485B
A13 GND
A14 Alternate
A15 Alternate
A16 Alternate
A17 Neutral point O
A18 A phase voltage input
A19 B phase voltage input
A20 C phase voltage input

Installation size

product-description1

Application

product-description2
product-description3
product-description4
product-description5

  • Previous:
  • Next:

  • product name

    product model

    basic function

    remarks

    Microcomputer harmonic device

    NLK-XX

    Microcomputer harmonic device

     图片3

    Monitor the status of the system in real time, and make an accurate judgment of the low frequency, base frequency and high vibration faults of the system. If the system resonance is eliminated by damping, the device can start again to provide the RS interface of three-phase voltage measurement overvoltage undervoltage grounding P break with a bus (+ 50 yuan)

    Open hole is 178mm * 128mm

    Write your message here and send it to us

    Related products

    • Indoor High Voltage Live Display

      Indoor High Voltage Live Display

      Product Details Overview This product is a HX2 phase comparator (PC) designed and produced by our company according to the requirements of users, which is used in conjunction with the DXN80 series of indoor high-voltage live display devices (the indicator panel sets the phase test end). It is suitable for substations and power distribution stations (especially when cables enter the line) that are equipped with dual power supplies and multiple power supplies for in...

    • Intelligent Dehumidification Deviceintelligent Oil Pumping Deviceconventional

      Intelligent Dehumidification Deviceintelligent ...

      Summary Intelligent dehumidification device is the use of semiconductor refrigeration dehumidification mode, the closed space of the wet air in the fan under the action of the fan, the air water vapor through the semiconductor refrigeration mechanism after condensing into water, and then eliminate the cabinet through the guide pipe, can achieve a good dehumidification effect. Cooling type: F01 is set at 0. Meanwhile, the dehumidification device is automatically start...

    • Current Transformer Secondary Overvoltage Protector

      Current Transformer Secondary Overvoltage Prote...

      scope of application Current transformer secondary overvoltage protector is mainly suitable for differential winding, overcurrent winding, measurement winding, bus protection winding and backup winding of CT secondary side. It is used to inhibit transient overvoltage below impact overvoltage of the equipment and discharge surge energy, so as to protect the system circuit and equipment. Normal service conditions and installation conditions 1. Normal service conditions...

    • Indoor High Voltage Live Display Fault Indicator

      Indoor High Voltage Live Display Fault Indicator

      The main function 1. Short-circuit current alarm: The short-circuit current sensor detects the running high-voltage cable online during operation, When the line current reaches or exceeds the set value (which can be adjusted before leaving the factory according to user needs), short-circuit The sensor sends an alarm signal and transmits it to the host through the optical fiber. After the host receives the signal, it will be displayed on the panel The corresponding alarm indication signal is i...

    • Small Current Grounding Line Selection Device

      Small Current Grounding Line Selection Device

      Model and parameters and service environment Table 1 of Technical Parameters of Small Current Line Selection Device Technology, technique, reference, and mark Technology, technique, reference, and number Prepare, note working voltage AC/DC:85V~265V Input the opening zero-order voltage, U0x 0~150V The measurement accuracy is 1% Enter zero-order current 20mA~3A The measurement accuracy was 0.5% Select line range There are 54 bus rou...

    • Intelligent Dehumidification Device Intelligent Oil Pumping Device Mini

      Intelligent Dehumidification Device Intelligent...

      Overview Intelligent dehumidification device is the use of semiconductor refrigeration dehumidification mode, the humid air in the closed space under the action of the fan inhalation dehumidification air duct, the water vapor in the air through the semiconductor refrigeration mechanism condensed into water, and then through the guide pipe through the cabinet, can achieve a good dehumidification effect. When there is no manual open dehumidification function: when the ...