Description
lThe system provides accurate fault location solution for transmission and distribution power lines.
lThe fault distance Measurement error is less than ±150m irrelevant of line length, and free from influences of following factors, which affect fault location accuracy of traditional impedance measurement methods
nFault resistance
nVoltage and current transformer (TV,TA) errors
nInsufficient accuracy of line parameters due to neglecting of line transposing, distributed capacitance, etc.
nUncertainty of zero sequence impedance due to variance of soil resistivity alone the line corridor
nLoad flow
lTraveling wave technique can be used to measure distance to fault in all kinds of power lines, including
nAC transmission lines
nHVDC transmission lines
nSeriously compensated transmission line
nLines with T branches
nThe line containing cable sections and overhead line
nMeasuring fault distance of a single phase to ground fault in non-effectively earthed distribution system.
lThe XC-2100E consists of the traveling wave data acquisition unit XC-100Einstalled at substations, the master station which runs traveling wave analysis software XCF-2100Edeployed in the control center and the communication network.
The whole system includes the following devices:
nXC-100E Traveling Wave Data Acquisition Unit
nXCF-2100E Master Station Software
For accurate timing for the devices involved, the XC-2100E also needs the GPS time synchronization module to provide accurate time reference.
XC-100E
XCF-2100E
Features:
lGPS synchronization is embedded into XC-100E
lAutomatic distance to fault calculation
lWide area fault location collects data from the whole power network
lLocation is performed directly on the network map
lUnlimited number of monitored lines
Specification:
XC-100E:
Analog Input:
lChannels: 3-24 configurable for 1-8 lines application.
lType of input:
nCurrent input with an clipped on CT
nCurrent input from CT
nVoltage input from PT
lAC Current input:
nNominal: 5A/1A
nBurden: < 0.4VA(In = 5A)，< 0.2VA(In = 1A)
nOverload withstanding: 400%In, continuous. 4000% In, 1s.
lAC Voltage input:
nNominal: 57V/63.5V/69V
nBurden: < 0.4VA
nOverload withstanding: 200%Un, continuous. 250%Un, 10s.
Digital input:
5 Dry contacts(standard), can be extended to 16 contacts max.
Communication port:
1 Serial port, 2 Ethernet ports + 1 maintenance Ethernet port, 1 modem RJ-45 port, 1 USB port.
GPStime synchronization:
Internal GPS module time accuracy: 100ns
Display:
LCD display. Number of pixels: 256 x 64; dimensions: 132 x 39 mm
Memory space:
8GByte, 1000 records min.
Power supply:
85 to 264V, 50/60 Hz AC or 90 to 260V DC
Mechanical:
Physical dimension:19", 2U
Weight: ﹤4kg
