With the progress of science and technology, satellite communication technology has also been widely applied. Satellite communication technology can provide time information and navigation and positioning functions. At present, GPS has low time cost, accurate timing and wide coverage for various industries. The time synchronization system used in substations is the time system established by GPS satellite information.

The GPS timing system for substations is a time synchronization system composed of clock synchronization system which receives GPS satellite signals as a time source and other time service equipment. This time service mode with satellite time information as the time source ensures the accurate time of the substation. In general, there are many kinds of equipments that need time service in the substation, so the time information output interface of the clock synchronization system will also have many kinds, so as to ensure that all kinds of equipment can give time.

The substation is related to the safety of people's electricity consumption, so the clock synchronization system increases the function of alarm. When the clock synchronization system of the substation is in the process of time service, if the distance between the two devices is very far, the time synchronization information of the clock synchronization system is difficult to transmit. This requires two clock synchronization systems to serve time in two places. The clock synchronization system input time signal and output time signal have high accuracy, which can guarantee the time consistency of two places.

With the rapid development of today's society, the power system is also developing. The safety of power system operation is related to the safety of electricity in civil use and the safety of electricity in all trades and professions. The operation of power system is changing rapidly and is always vigilant at all times. Therefore, the power system has many requirements for the function and time accuracy of the clock synchronization system. The development of SYN4505A clock synchronization system has solved the demand of power industry for timing equipment. SYN4505A clock synchronization system can provide high precision time signals for dispatching organizations, substations, power plants, production control, and so on. It also has the monitoring function of time synchronization between time equipment and equipment.

Substation GPS timing system equipment SYN4505A type clock synchronization system, can receive GPS Beidou, GLONASS satellite signal, also can receive IRIG-B code, PTP, NTP, and other signals. It has a variety of output interfaces, such as IRIG-B code, NTP network, PTP timing, 1PPS, 1PPM, 1PPH, serial port, relay alarm, etc. each signal can increase multiple output. The clock synchronization system has automatic mode, manual mode, punctual mode (time keeping mode does not accept external signals, uses oscillator to keep time), and three working modes, with a dry contact alarm function, with system setting function, can set baud rate, time zone and delay. These functions of SYN4505A clock synchronization system fully satisfy the GPS timing system of substations.

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