Low voltage reactive power compensation controller
RHJKWF type distribution monitoring and reactive power compensation controller using standard shell, embedded installation, with 32 bit digital signal processor (DSP) as the core, in the three-phase electricity measurement, 128 * 64 dot matrix liquid crystal display, full six months of data storage, every 15 minutes to save a historical data, with a strong background communication function, can the software of remote control controller, mass storage of historical data, historical data can be reproduced by software, harmonic analysis, load rate statistics, limit control, dynamic reactive power compensation, power measurement, recording and communication in one event. The product has many functions, high precision, simple operation, high reliability, convenient installation and so on, which is suitable for the monitoring and reactive power compensation control of AC 0.4KV, 50Hz low voltage power distribution system. Communication networking capabilities to provide RS232, RS485 communication port, communication support GPRS, wireless communications, twisted pair, coaxial cable, digital radio stations, etc., but also can use MODEM to communicate with the optical fiber. Combined with the communication part can also communicate with the SCADA master station. Complete the various monitoring functions of the distribution line, the installation meets the DIN standard. Single mac
First, the basic functions
(a) real time data monitoring
- A, B, C each phase voltage, current, power factor
A, B, C in each phase in the distribution container switching states and the system load rate
- A, B, C in each phase of active power, reactive power, apparent power, total power
In the system, the total active power, total reactive power, zero sequence current
- A, B, C phase voltage total harmonic distortion, total harmonic current distortion rate, system frequency,
- A, B, C 3, 5, 7 phases, 9, 11, 13 voltage harmonic ratio
- A, B, C 3, 5, 7 phases, 9, 11, 13 times the current harmonic ratio
(two) statistics and analysis of historical data
The terminal can collect and store three months of power grid operation data, after power down data storage for more than 10 years.
1. historical data statistics
- A, B, C each phase voltage, current, zero sequence current, power factor, active power, reactive power, frequency system;
A, B, C - 3, 5, each phase distortion of 7, 9, 11, 13 times the voltage harmonic ratio and total harmonic voltage ratio;
- A, B, C 3, 5, 7 phases, 9, 11, 13 times the current harmonic ratio and total harmonic current distortion rate;
2. data analysis
- A, B, C each phase voltage is the upper limit of time, the more time limit, the upper limit, lower limit rate rate;
- A, B, C each phase voltage of the maximum and minimum value of time, phase time, three-phase unbalance rate;
In the power outage time, call time long, the number of power outages.
- A, B, C in each phase of the maximum and minimum values of power factor, each capacitor operation time, switching time;
In the active power, reactive power, long running;
- the maximum and minimum load time, the maximum and minimum reactive load time;
- the maximum current value, the minimum value of the current, the maximum current for 15 minutes.
3. data management
All data through the serial port and PDA (palm computer), GPRS data transmission module or micro power radio and other connections and the main station communication, generate reports, print statements.
(three) reactive power compensation
The physical quantity of sampling is reactive power, and there is no oscillation.
The nine zone control method is used to cut the capacitor.
Capacitor switching control program support and other capacity / coding (1:1:1:1, l:2:2:2, l:2:3:3, 1:2:4:4) and fuzzy control method
The capacitor can be switched to achieve the optimal capacitor control with the least number of capacitors;
- delta type compensation - type Y - +Y compensation compensation
The number of investment Qielu 0-12/18/24/32 road.
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