Transformer substation acquisition terminal based on dual satellite system for positioning and clock synchronization

Abstract

The invention relates to a transformer substation acquisition terminal based on a dual satellite system for positioning and clock synchronization. The transformer substation acquisition terminal basedon the dual satellite system for the positioning and clock synchronization comprises a control center, power supply, a main control chip, a dual satellite module and an antenna. The power supply is separately connected with the main control chip and the dual satellite module, and the main control chip is connected with the control center. The dual satellite module comprises a dual mode base bandprocessor and a dual mode radio frequency receptor which are connected with each other, the dual mode base band processor is connected with the main control chip, and the dual mode radio frequency receptor is connected with the antenna. Compared with the prior art, automatic positioning and clock synchronization are carried out by adopting the dual satellite system, the advantages of a multi-satellite system are blended and developed sufficiently by combining a GPS satellite and Beidou first generation and Beidou second generation satellites, the clock management level and measurement level ofan acquisition system are improved, the influence of abnormal acquisition terminal parameters on acquisition services is effectively reduced, and guarantee is provided for realizing high-efficiency and stable data acquisition.

Description

technical field [0001] The invention relates to the field of electric power distribution automation, in particular to a substation acquisition terminal for positioning and clock synchronization based on a dual-satellite system. Background technique [0002] The realization of positioning and clock synchronization through satellite systems has broad application prospects in acquisition systems. Satellites can achieve precise positioning and real-time time synchronization of terminals. In terms of positioning and clock synchronization technology for smart substation acquisition terminals, the current mainstream method is to use the GPS system, but the GPS system is operated by foreign satellites. Due to various reasons such as changes in international relations, the performance of the GPS receiving system is likely to be greatly reduced. Or malfunction, which has left a very large hidden danger to the safety and reliability of the system of the GPS signal device. [0003] Wit...

AI Technical Summary

Problems solved by technology

In terms of positioning and clock synchronization technology for smart substation acquisition terminals, the current mainstream method is to use the GPS system, but the GPS system is operated by foreign satellites. Due to various reasons such as changes in international relations, the performance of the GPS receiving system is likely to be greatly reduced. Or failure, which has left a very big hidden danger to the safety and reliability of the GPS signal equipment system

[0003] With the continuous improvement of my country's Beidou satellite system, Beidou satellites have begun to provide continuous passive navigation, positioning, and clock synchronization services to China and surrounding areas in recent years. Its functions are almost the same as those of GPS. Beidou satellites are used as smart substations There are more and more applications for positioning and clock synchronization of acquisition terminals. However, the technical characteristics of the two are very different. The main difference is that Beidou satellites are based on the central control system and satellite work, and the central The dependence of BDS is obviously much greater, because the positioning solution is completed in a fixed center rather than by the user equipment, which is vulnerable. However, Beidou satellites use geosynchronous satellites for measurement, and in mobile static applications, it can be guaranteed to always accept to the same satellite, so as to ensure the stability and reliability of regular clock synchronization applications; GPS is a passive pseudo-code one-way ranging three-dimensional navigation, and the user equipment independently calculates where the self-positioning solution is. Once the ground control center is damaged , can still work, however, GPS uses low-orbit moving satellites, which is prone to satellite switching and sudden jumps in satellite positioning accuracy

[0004] And some devices that use the combination of GPS and Beidou satellites are mostly based on the combination of the mature GPS module of foreign manufacturers and the Beidou satellite one-way module. The two modules are independently calculated, and the clock synchronization information and positioning information of a system are selected by application In this mode, the observation data of different satellites cannot be shared, and the advantages of the two navigation systems cannot be fully integrated and utilized

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