Distributed grounding resistance detection system and detection method based on wireless signal source
A grounding resistance and wireless signal technology, which is applied in the field of distributed grounding resistance detection systems, can solve the problems of cumbersome operation of clipping transformers, inconvenient carrying of long wires, etc., and achieves the effect of solving cumbersome operations.
Active Publication Date: 2019-11-12
SHANDONG JIANZHU UNIV
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[0006] The invention provides a distributed grounding resistance detection system and detection method based on a wireless signal source, which not only meets the measurement accuracy requirements, but also solves the problems of cumbersome operation of picking and clamping transformers during wired measurement and long wires that are not easy to carry
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[0046] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0047] On the one hand, the present invention provides a distributed ground resistance detection system based on a wireless signal source, such as Figure 1 to Figure 5 Shown, including wireless ground resistance tester and transformer, where:
[0048] The wireless grounding resistance tester includes a power supply module 1, a first control core module 2, an excitation signal generation module 3, an FM transmitter module 4, a first Zigbee module 5 and a communication module 6;
[0049] The power supply module 1 is responsible for providing suitable voltage for the whole wireless grounding resistance tester. Lithium-ion batteries can be selected to supply power to each module of the wireless grounding resistance tester after passing through various step-...
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The invention discloses a distributed ground resistance detection system and detection method based on a wireless signal source, and belongs to the power transmission field; the detection system comprises a wireless ground resistance tester and a mutual inductor; the wireless ground resistance tester comprises a power supply module, a control core module, an excitation signal generation module, afrequency modulation transmitter module, a Zigbee module and a communication module; the mutual inductor comprises a power supply module, a frequency modulation receiver module, a synchronization module, a voltage transformer module, a current transformer module, a signal conditioning module, a phase measuring module, a MCU control module, a Zigbee module and a self-check module. The detection system and method can reach the measuring precision requirements, and can solve the problems that an existing wired measuring method is complex in mutual inductor clamping operation, and a long wire is inconvenient to carry.
Description
technical field [0001] The invention relates to the field of power transmission, in particular to a distributed grounding resistance detection system and detection method based on a wireless signal source. Background technique [0002] The prevention of lightning damage is a problem that must be considered when building high-voltage transmission towers. Installing grounding devices in transmission lines is a basic measure to prevent lightning damage. However, since the grounding downconductor is usually exposed to the natural environment, it is easily damaged by force majeure such as wind and rain erosion, resulting in corrosion or fracture of the grounding device. This will greatly reduce the lightning protection effect of the grounding device of the transmission tower, and increase the risk factor of damage to the transmission tower. Therefore, detecting the grounding resistance of transmission towers is a critical step in the maintenance of high-voltage transmission towe...
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IPC IPC(8): G01R27/20
CPCG01R27/205
Inventor 李艳萍王涛高焕兵隋首钢吴林彦
Owner SHANDONG JIANZHU UNIV