State Grid phase identification maintenance file inventory solution
Time：
2023-01-04 16:02
Source：
In order to reduce consumption and loss, the power management department needs to use the station area user identification instrument to find out the station area and the different attributes of the user, so as to provide real and accurate basic data for the realization of the fine management of the station area. The traditional station area subscriber identification instrument adopts the power carrier communication mode, which has two obvious disadvantages: it is easy to misjudge when the adjacent stations change common high voltage, common ground and common cable channel because of the tandem lines of the carrier signal; Power carrier signal is high frequency signal, attenuation is serious, long distance, line interference is large users can not identify. Platform user identification instrument is an upgrade of the traditional instrument. It uses the bidirectional reconfirmation method combining pulse current signal and FSK power carrier signal for platform identification, avoiding the defects of misjudgment easily caused by the previous generation of platform user identification instrument under the conditions of common high voltage, common ground and common cable channel, and the user identification accuracy is 100%. Because the pulse current does not have the problem of attenuation, Yulong mobile multifunctional low voltage platform area user identification instrument is suitable for long distance testing.
★ The host sends out the transformer number and three-phase identification code based on FSK power carrier communication mode.
★ Detection terminal will be based on the information code received at the user end, identify the station area properties and differences of the watt-hour meter being inspected.
★ Added configuration can test the three-phase unbalance of the transformer while checking the properties of the user platform area.
★ The detection terminal uses infrared ray to set the host transformer number.
★ The detection terminal uses a large screen LCD display, Chinese characters prompt, convenient to read the watt-hour meter and the properties of the station area.
★ Display the phase voltage, test point voltage and line voltage drop of transformer outlet side.
★ The detection terminal uses rechargeable lithium battery power supply, stronger anti-interference ability.
★ The built-in flash memory can store up to 30,000 user terminal data.
★ Can be extended to measure current, power, power factor, Angle, 2-31 harmonics.
Scope of application:
Widely used in: low voltage station area file inventory, collection system debugging, line loss management, station load management, power grid quality monitoring, etc
Product features:
The result is accurate, fast and intuitive: 100 percent recognition within 6 seconds
Communication distance: more than 5 kilometers, low pressure platform area comprehensive coverage
Determine the owning relationship of multiple stations at a time: A maximum of 8 stations are supported
Branch recognition accurately locates topological relationships
Small size, easy to carry: handheld
Basic principle:
Multifunctional low-voltage station area identification instrument adopts power-frequency carrier modulation technology for station area identification, which can accurately identify the station area under the influence of the adjacent stations varying common high voltage, common ground, common cable trench and communication base station. For lines with long distance and severe interference, the power carrier signal may not be transmitted effectively. In this case, our platform identification instrument can be correctly identified with accuracy only once. At the same time, a maximum of eight stations with chaotic adjacent topological relationships can be identified at a time according to different station numbers.
Product features:
1. Platform identification
Function contents: station identification, user phase identification, branch judgment, station mutual detection.
Function application: user's station area, phase difference between devices, file checking, connection fault diagnosis (neutral line break, virtual connection), collector connection adjustment, etc.
2. Branch identification
Function content: Support up to 24 branches one time identification, accurate.
Function Application: The user branch owning relationship is determined.
3. Low power network quality analysis
Function content: realize phase voltage, middle line voltage, frequency measurement, three-phase voltage Angle measurement, phase sequence judgment, fundamental voltage, 2-34 harmonic analysis, waveform distortion coefficient calculation.
Function application: Applied to voltage balance analysis, load balance analysis, connection mode judgment, phase sequence detection, etc.
4. Humanized operation
Function contents: two-way communication function, integrated information data processing mode of platform identification instrument and PC;
Function application: two-way communication, easy operation, starter and response can adjust at any time; data
Processing facilitates the statistical analysis of platform identification results.
Shenzhen Yulong Mobile Internet Co., Ltd
Add: 3H, Building B, Junxiangda Building, No. 9, Zhongshan Park Road, Nanshan District, Shenzhen
National Railway Mall
National Railway Mall
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Links: Tiekeyuan Institute | More | South Power Grid...
