Fig 1.
Distribution of space charge around HVDC transmission line.
Fig 2.
Framework of the space charge measurement.
Fig 3.
Structure of space charge density measurement instrument.
Fig 4.
Diagram of equivalent circuit model.
Fig 5.
Block diagram of wireless data acquisition node.
Fig 6.
Picture of wireless node.
Fig 7.
Topology of three kinds of network.
Fig 8.
DigiMesh Topology of network.
Table 1.
AD Command Response of Xbee Pro.
Fig 9.
RSSI value of different places.
Table 2.
Packet Loss Rate under Different Environment.
Fig 10.
Measuring device placement.
Fig 11.
Picture of measurement system in HVDC test base.
Fig 12.
Experiment results of space charge density under different voltage levels.