Beidou satellite system uses power on (NTP network time server) when an imminent
power system using Beidou satellites (NTP network time server) when imminent
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1. Why use Compass clock synchronization device?
Due to historical reasons, China's current clock source power industry time synchronization system mostly used by the US GPS system to do the main clock source. Currently, GPS is a common military and civilian control of the US military system, open to the world. China's current use of GPS signals belonging to the United States free reception. Nevertheless, the Americans are not committed to ensuring that your use. This will bring about a security issue, such as the power system to the US GPS as the primary clock source, it will be there is a significant security risk, once the war and other emergencies occur, the United States shut down or adjust the GPS signals, will give us the power production with to great effect.
How to create the perfect time synchronization mechanism, while the power system time synchronization system from the control of his country, is placed in front of the power industry, a major issue .GPS / Compass clock synchronization device is in this situation came into being, in order to protect production of the power system, operational safety, GPS / Beidou dual mode GPS clock synchronization device concurrently receives standard time information and Compass two different satellite systems, wherein when the system receives a signal fault or exception, can automatically switch to another further a timing system to ensure stable reception upstream time source, due to the Beidou satellite navigation system developed by China's own, with respect to the GPS system, in safety and more secure.
2, how to help you choose the right clock synchronization devices
currently in clock synchronization applications co-exist with different types of equipment, technical data through a survey of some of the main features of which here the universally recognized various devices to explain.
2.1 compatible may receive GPS satellite time signals and two kinds of Compass, the satellite time can be set any time as the main signal source, the time when the main source of failure or abnormal signal, the system automatically identify and switch to the standby time of the error signal receiving source, the switching time is less than 50MS, with a warning beep when the switchover, doing so without manual intervention. Some equipment can not automatically switching, the need for manual intervention, such equipment does not apply in the increasing degree of automation of the power industry.
2.2 system uses modular assembly, the main advantage is to ensure that the different applications, for the use of demand may be arbitrarily configure the type and amount of PPS / PPM / PPH, IRIG- B interfaces, RS232 / 422/485, NTP , PTP interface, such as .
2.3 if the control board and the power supply system by way of a double backup support is not lost the satellite signal clock accuracy self-maintained state error is less than 24 hours 10MS, when the external power supply is interrupted the system, whether to support the 24-hour automatic battery life. Above design approach can maximize the protection of the safety and stable output clock signal reference, in extreme cases, it can guarantee the normal operation of the system.
2.4 All plug-ins are hot-swappable, the benefits of this feature is not needed to power the entire clock system shut down for maintenance and replacement of some of equipment, maintenance or replacement of parts of the overall system is still stable operation.
Detection example
, 2008 May 5 used in Turpan Power Administration, Aksu power companies, mainly applied to the entire station clock synchronization and unified. It was well received, providing help to scientific research programs for the post-failure analysis equipment and network fault diagnosis breakpoints provide a strong reference.
August 25, 2009 through rigorous equipment insulation, heat-resistant properties, mechanical properties, environmental performance, electromagnetic compatibility, reliability, maintainability, safety testing, India IMFA 30MW power plant officially use the GPS clock synchronization system device ( Compass reserved expansion interface), to a successful fault recording apparatus and reference clock synchronization reference of each unit.
October 20, 2010, Shaoshan in Hunan Electric Power Co., Ltd. through a comprehensive comparison of the cost of the product, select this series (clock synchronization system) as the station's clock synchronization reference signal source, inspection results show that the targets are met or because of requirements .
According to overhaul squad leader told contrast in Shaoshan, the company's original equipment imported clock synchronization device he used in the original (the original purchase 400,000) consistent accuracy, response time consistency, accuracy, consistency. And I have this instrument more cost-effective advantages.
