A lightning arrester monitoring system based on zigbee wireless dual-band synchronous transmission
A monitoring system and synchronous transmission technology, applied in transmission systems, comprehensive factory control, electrical components, etc., can solve the problems of long cycle, high engineering cost, and large amount of engineering.
Active Publication Date: 2017-12-26
NANJING SINDO TECH
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Problems solved by technology
[0002] At present, the lightning arrester monitoring system mostly adopts the traditional wired method. With the development of technology, there are more and more wireless transmission methods. The traditional transmission method not only has a large amount of engineering, but also has a high cost of engineering transformation and a long cycle. To solve this problem, the wireless transmission method is adopted. Due to the special application environment in the high-voltage power grid environment, the spectrum interference of the substation is serious, and the direct use of conventional wireless will inevitably bring about the stability of data transmission. In order to solve this problem, a physical layer improvement scheme based on the Zigbee protocol is used to implement the transmission mechanism. High-reliability wireless transmission arrester online monitoring system
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[0015] The system of the present invention is mainly composed of a centralized controller, a background monitoring system and a number of lightning arrester acquisition nodes. synchronization frequency point, after completing the bottom layer initialization task, follow the Zigbee ad hoc network protocol.
[0016] 1. Power on the centralized controller, monitor the number of "same-frequency carrier" signals received by each frequency point in the "unit time" through the background monitoring system, and select the frequency point channel with the lowest frequency as the "best wireless frequency" used by the control system this time. point channel", initialize the dual-frequency point channel, the centralized controller is first configured as the default frequency point A and frequency point B, and the centralized controller uses the default frequency point channel when communicating with the "lightning arrester collection node" for the first time, and sends " Look for "arreste...
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The present invention relates to a lightning arrester monitoring system based on Zigbee wireless dual-band synchronous transmission, including a centralized controller, a background monitoring system and several lightning arrester collection nodes, the centralized controller is connected to the background monitoring system, and the lightning arrester collection nodes are used for After power-on, the data initialization configuration of two wireless frequency points is completed. Two synchronous frequency points are selected by default when power-on. After completing the initialization task of the bottom layer, each lightning arrester collection node transmits information to the centralized controller through the best wireless frequency point channel. Solved the problem that the "lightning arrester collection node" reported data at the same time and caused mutual interference at the same frequency and could not communicate normally.
Description
technical field [0001] The invention relates to the field of power grid monitoring, in particular to the field of Zigbee wireless transmission arrester monitoring. Background technique [0002] At present, the lightning arrester monitoring system mostly adopts the traditional wired method. With the development of technology, there are more and more wireless transmission methods. The traditional transmission method not only has a large amount of engineering, but also has a high cost of engineering transformation and a long cycle. To solve this problem, the wireless transmission method is adopted. Due to the special application environment in the high-voltage power grid environment, the spectrum interference of the substation is serious, and the direct use of conventional wireless will inevitably bring about the stability of data transmission. In order to solve this problem, a physical layer improvement scheme based on the Zigbee protocol is used to implement the transmission m...
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IPC IPC(8): H04L29/08H04L29/06G05B19/418
CPCY02P90/02
Inventor 尚雪嵩陈燕午
Owner NANJING SINDO TECH