System and method for synchronously monitoring secondary equipment time of power supply system

The invention discloses an intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method which is characterized in that the intelligent transformer substation adopts a light inter-range instrumentation group (IRIG)-B code synchronous time tick mode, and the conventional transformer substation adopts a global positioning system (GPS) time tick mode, so that a plurality of points can be subjected to synchronous acquisition and trigger test; during test, relay protection testers on two sides are respectively connected to a GPS clock and an IRIG-B code clock; and time information comprising date, hour, minute, second and the like is sent at the frequency of one time per second. The intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method has the advantages that the intelligent transformer substation adopts the light IRIG-B code synchronous time tick mode, and the conventional transformer substation adopts the GPS time tick mode, so that protection synchronous sampling and synchronous sampling of the testers on two sides are completed by using the two clocks, and a plurality of points can be subjected to synchronous acquisition and trigger test; therefore, the test on dual-end optical fiber current longitudinal difference protection is realized; and the test method is simple, and the data is accurate.

Intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method

The invention provides a design method for a clock synchronization device, with lower cost and high-precision time service output. The clock synchronization device comprises a power module, a signal processing module, a time receiving module, an atomic clock, a display module and a keyboard module, wherein the time receiving module is used for sending the received satellite data and second pulse signal to the signal processing module; the signal processing module is used for analyzing the data and sending the processed second pulse signal to the atomic clock; the atomic clock is used for synchronizing the second pulse signal and then sending the state information and the second pulse signal to the signal processing module; the signal processing module is used for performing time-code distribution and displaying through the display module; the keyboard module is used for performing related time service setting on the equipment. The clock synchronization device provided by the invention can solve the problems of high cost and low precision of the present time service products and has the advantages of simplicity and easiness in design, high expandability, high precision and performance stability.

Design method for high-precision clock synchronization device

High-accuracy synchronous system detection device applied to intelligent transformer substation

The invention relates to a time receiving and processing device, and particularly relates to an AC/DC B-code adaptive analysis device and method. The AC/DC B-code adaptive analysis device comprises apower module, a B-code processing module, a backplane module and a display control module. The B-code processing module adopts an analysis processing mode with amplitude adaptation and polarity adaptation, the analyzed second pulses can be subjected to delay parameter correction, accurate second pulse signals can be obtained, and user signal access convenience is realized. A temperature control circuit is arranged between a first DC/DC module of the power module and a second switch control circuit, the temperature control circuit comprises a thermistor, a voltage comparator and an MOS transistor, and when the environment temperature reaches +80 DEG C, voltage output is closed, the device can be prevented from being damaged in the case of high temperature work, and the service life of the whole device is prolonged.

AC/DC B-code adaptive analysis device and method

The invention discloses a power clock detecting device which comprises a satellite receiving unit, an IRIG-B code demodulating unit, a pulse detecting unit, a user interacting unit and a power supply unit, wherein the output end of the satellite receiving unit is connected with the pulse detecting unit; the IRIG-B code demodulating unit is used for demodulating an IRIG-B signal output by power clock equipment to obtain a second pulse synchronized signal carried by a B code signal; the pulse detecting unit is used for detecting the time difference value of the second pulse synchronized signal to be detected and a generated reference second pulse clock signal; the time difference value is obtained from the pulse detecting unit by the user interacting unit and can be displayed and saved after counting; and the power supply unit is respectively connected with the satellite receiving unit, the IRIG-B code demodulating unit, the pulse detecting unit and the user interacting unit. The invention can provide a measuring function for power main clocks and expansion devices installed in occasions such as a power plant, a substation and the like in a power system, satisfies the detecting requirements of a power clock, ensures the time unification of the power system and improves the quality and the reliability of electric network operation.

Power clock detecting device

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Power clock detecting device