GPS synchronous clock carrier power source

A technology for synchronizing clocks and synchronizing clock signals, applied to clocks driven by synchronous motors, synchronizing, power supply circuits, etc., can solve problems such as difficulty in expansion, waste of space and resources, and numerous antennas, and achieve cost reduction, simplification of structure, and layout. compact effect

Inactive Publication Date: 2010-03-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If each synchronous measurement and control device (equipment) in the power system is equipped with a separate GPS receiver, it will not only lead to a large number of antennas on the roofs of power plants, substations, dispatching center buildings, etc., and cause waste of space and resources, but also make the layout of the synchronous measurement and control system complicated. Difficult to expand

Method used

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  • GPS synchronous clock carrier power source
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  • GPS synchronous clock carrier power source

Examples

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] refer to figure 1 , GPS synchronous clock carrier power supply, including a synchronous clock module 1, a modulation module 2, a DC power supply module 3, a carrier power supply transmission line 5 for transmitting high-frequency modulated synchronous clock signals, and N demodulation modules 4, where N is the synchronization of access The total number of measurement and control devices;

[0029] Synchronous clock module 1 includes (see figure 2 ):

[0030] -GPS receiver 1.0, which receives international standard UTC clock information from orbiting satellites, and outputs globally synchronized 1PPS second pulse and UTC clock information synchronization clock signal;

[0031] - The clock-keeping circuit 1.1 is connected with the 1PPS second pulse signal output terminal of the GPS receiver 1.0 and the processor 1.2, and directly outputs the 1PPS second pulse...

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Abstract

The invention discloses a GPS synchronous clock carrier power source, comprising a synchronous clock module, a modulation module, a DC power module, carrier power transmission lines, and N demodulation modules, wherein, the carrier power transmission lines are used for transmitting high-frequency modulation synchronous clock signals; and N is the total number of accessed synchronous measurement and control devices. The GPS synchronous clock carrier power source modulates a synchronous clock signal, such as IPPS pulse per second and UTC time information, output by the synchronous clock module based on a GPS receiver and the DC power into a carrier power with a synchronous clock, and transmits the carrier power with the synchronous clock into various synchronous measurement and control devices in a monitor terminal substation of a power system; the synchronous measurement and control devices obtain high-precision synchronous clock signals and DC power needed in working through the carrier power transmission lines. The GPS synchronous clock carrier power source of the invention can simplify the structure of a field synchronous measurement and control device, leaves out the power module and the GPS receiver, reduces the cost, and can lead the layout of a synchronous measurement and control system in the terminal substation to be more compact, flexible and reasonable.

Description

technical field [0001] The invention relates to a GPS synchronous clock carrier power supply, which is suitable for providing high-precision synchronous clock signals and DC power supplies required for the work of various synchronous measurement and control devices in the power system monitoring terminal substation. Background technique [0002] The power system is a time-dependent system, regardless of voltage, current, phase angle, and power angle changes are all waveforms based on the time axis. In recent years, supercritical and ultra-supercritical units have been connected to the grid one after another, large regional power grids are interconnected, and UHV transmission technology has been developed. The safe and stable operation of the power grid puts forward new requirements for power automation equipment, especially the problem of time synchronization, such as relay protection devices, automation devices, safety and stability control systems, energy management system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G7/00G04G19/00H02J13/00
CPCY04S20/18Y02B90/228Y02B90/20
Inventor 杨贵玉江道灼禹化然
Owner ZHEJIANG UNIV
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