GPS synchronous clock carrier power source

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...

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

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