Photos of Product
General
With the development of power systems, the long-distance environment of power lines is becoming more and more complex. Because there are many mixed and branch lines, and the areas where the lines pass through are not under the jurisdiction of the power supply bureau, there are blind areas for supervision. The system ranging principle is not reliable, and the fault location can be accurately determined. The fault location is time-consuming and laborious.
The DSLS-1 system uses the voltage traveling wave when the transmission line fails, including high positive grounding and lightning strike, to achieve fault location, that is, through 5MHz high-speed sampling, GPS high-precision time signal sampling bus or line voltage, recording the voltage traveling wave of line fault, and then sending the power traveling wave sampling data to the cloud computing platform or power dispatching center computer through Ethernet or GPRS communication channel, The fault distance is calculated by the cloud computing server or middle note, and then sent to the operation and maintenance personnel's mobile phone or PC through SMS, WeChat, etc.
Environmental Conditions
☆ Ambient air temperature: Upper limit+55 ºC, lower limit - 10 ºC;
☆ Relative air humidity: 5%~95% (neither condensation nor freezing inside the product)
☆ Atmospheric pressure: 86kpa~106ka
☆ The site meets the safety requirements of GB/T 9361 Class B;
☆ The place of use shall not have vibration exceeding the severity level specified in GB/T11287;
☆ The place of use shall not have an earthquake with intensity VI exceeding that specified in GB/T17742;
Main Advantages
☆ High precision fault location: wavelet transform method is used for wave head detection, and the adaptive threshold de-noising comprehensive judgment method is used to make the ranging error less than 300m;
☆ Strong processing capacity: 32-bit floating point digital signal processor with an operating speed up to 2400/1800MPS/MFLOPS is adopted;
☆ High waveform resolution: adopt a 5M sampling rate and high-performance AD converter to provide high-resolution and high-precision waveform data;
☆ Powerful logic control: powerful ALTERA Cyclone FPGA is used for each logic control, and the internal frequency can reach 200Mz-250MHz
☆ On-chip programmable system: embedded processor NOS-1 can obtain 200DMPS performance, and the characteristics and performance of the embedded system can be adjusted as required;
☆ Large capacity data cache: the traveling wave data can be recorded for up to 400ms, and multiple recording areas have been opened. The acquisition board has a 256MB cache, which can store up to 4s of traveling wave data at one time, effectively preventing data loss caused by the data transmission bottleneck of the memory, and eliminating the recording dead zone;
☆ High precision time recording: the time recording unit is nanoseconds, and the fault occurrence time is accurately recorded;
☆High-speed transmission interface: A USB high-speed bus is used to connect to the PC104 board to eliminate the performance bottleneck so that fault data can be transmitted and processed at the fastest speed.
☆ Rich system information: the system has a perfect fault self-inspection function, which can monitor the internal fault of the system, the status of the GPS synchronization signal, etc. in real-time, and automatically give an alarm in case of fault;
☆ Powerful analysis software: powerful and accurate data analysis;
☆ Perfect remote dispatching function: the system can be configured, managed, and maintained by accessing the Internet through 100M Ethernet and transmitting traveling wave data remotely through dispatching software. It can also provide a variety of optional remote access methods;
☆ The ranging accuracy is not affected by factors such as system operation condition change, line transposition, fault condition, grounding resistance, CT, PT measurement accuracy, etc.
☆ Reliable fault startup: a variety of sudden variable fault detection (startup) methods based on floating threshold are configured, and external switching value startup signals can be accepted, so as to judge the sensitivity and reliability of a high inspection cycle.
Main Technical Parameters
| S/N |
Name |
Data Value |
| 1 |
5M Analog quantity |
Voltage 6 Channels |
| 2 |
1M Analog quantity |
48 Channels |
| 3 |
Switching Value |
64 Channels (Expandable to 128 channels) |
| 4 |
A/D Sampling Rate |
1-5 MHz |
| 5 |
A/D precision |
14 digits |
| 6 |
5M Data Acquisition Length |
0.5 Seconds |
| 7 |
1M Data Acquisition Length |
0.6 Seconds |
| 8 |
GPS Time Message Input Method |
IRIG-B (DC) |
| 9 |
Ranging Error |
< 300m |
| 10 |
Startup Mode |
Phase voltage sudden change startup |
| Zero sequence voltage sudden variable startup |
| Switch displacement start |
| Manual Startup |
| Remote Startup |
Outline And Installation Dimensions
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