Domestic Xinchuang GPS Beidou dual-mode timing device

GPSDomestic Xinchuang Beidou dual-mode timing device(GPSSatellite clock calibration,NTPTiming device,Beidou timing products)Adopting a fully modular structural design,Not only does it achieve full compatibility with the board, but it also provides rich signal interface resources and an open special interface design platform, with strong compatibility capabilities.

GPSThe domestic Xinchuang Beidou dual-mode timing device is an application developed and researched by Shanghai Ruicheng Electric Co., LtdGPSTiming technology/Beidou timing technology/A system for timing technology of high stability crystal oscillator, which realizes multiple sources of time reference（GPSBeidou Star, atomic clock, constant temperature crystal oscillatorIRIG-BTime reference), output in multiple formats (serial port, pulse, etc.)IRIG-BCodeDCF77ThePTPTheNTP/SNTPNetwork timing, etc., meet the requirements of multiple devices, ensure the high accuracy, stability, security, and reliability of time synchronization signals, and elevate the accuracy, stability, security, and reliability of time synchronization in the power system to a new and higher level. The system willGPS/Coordinated Universal Time Transmission by Beidou Satellite（UTC）Or using externally transmitted time reference signals as timing signal sources to generate signals for transmitting time informationIRIG-BTime code, serial time message, pulse signalDCF77signalNTP/SNTPAgreement andPTP(IEEE1588)Protocol time, used to implement the computer monitoring system, protection devices, and fault recorders for the entire plant (station) Safety automatic device, remote controlRTUScheduling automation systemPMUTheMISTheECSTheDCSThePLCSynchronize the waiting time to make the power plant/Each equipment in the substation has a unified time reference.

GPSThe Beidou dual-mode timing device is suitable for power dispatching systems at all levels; Newly built and renovated110kV(66kV)And above substations; Special substations with high-precision clocks such as intelligent (digital) substations; Various types of power plants with different capacities, such as thermal power plants, hydropower plants, nuclear power plants, wind power plants, photovoltaic power plants, etc. This device is widely used in various aspects of power generation, transmission, transformation, distribution, consumption, and scheduling in the power grid, providing detailed, safe, and reliable clock information for the safe and stable operation of the power grid.

GPSThe Beidou dual-mode timing device adopts a fully modular structure design, and its input, output, power supply, etc. can be flexibly configured. It also has a rich variety of modules and boards for selection (customized services can be provided for special needs), and the types and quantities of timing signals can be flexibly selected and configured according to needs. The device has standardsRS232TheRS422/485PulseIRIG-BTheDCF77TheNTP/SNTPAgreement andPTP(IEEE1588)Interface forms such as protocol time output can adapt to the timing needs of various devices and are widely used in power, finance, communication, transportation, broadcasting, security, petrochemicals, metallurgy, water conservancy, national defense, healthcare, education, government agenciesITIn other fields.

GPSTechnical characteristics of Beidou dual-mode timing device

1Output accuracy: This system'sGPSThe accuracy of the second pulse output of the Beidou module is less than20nsPulse output signals are all generated byFPGATherefore, the transmission delay of each pulse signal on the circuit board can be compensated for through configuration tools, ensuring stable accuracy of the output signal100nsWithin.

2Punctuality accuracy: WhenGPSAfter the Beidou loses lock, this system outputs the timekeeping time. The internal clock source adopts a highly stable constant temperature crystal oscillator, and through frequency lock-in technology, the timing accuracy is achieved4us/Oh my god.

3Lightning protection design: Three aspects of lightning protection design have been implemented, one is power supply lightning protection design; SecondGPSLightning protection design for Beidou antenna; The third is the interface lightning protection design for output signals.

4TheNTPFunction: Provided by the system1-14A physical isolation10/100MNetwork ports, all haveNTP/SNTPThe output function can simultaneously achieve timing for multiple isolated networks, and the access method can also be broadcast.NTPThe server port and broadcast time interval can be set through configuration tools.

5Remote configuration and upgrade: A configuration tool that is compatible with the system, which can remotely configure the system through Ethernet, including program updates, modifying device network configurations, online debugging, configuring serial port message protocols, and selecting timing pulse signal types(IRIG-BCodeDCF77orPPS/PPM/PPHpulse)Extended signal compensation (delay varies depending on the position of the expansion board). Each expansion board is physically isolated and can be configured with different protocols according to different needs, breaking away from traditional methodsGPSThe synchronous clock only sends one time synchronization protocol, enhancing the adaptability of the system.

6Online monitoring: The operation status of the system can be remotely monitored online through configuration tools.GPSThe Beidou dual-mode timing device is connected to the configuration tool through Ethernet, and can remotely query the system's time and ensure that the synchronization pulse is normal/Lost, synchronized time source available/Unavailable, current time source（GPS/Beidou/Punctuality, timekeeping duration, timekeeping accuracy, frequency of constant temperature crystal oscillatorGPSModule status and the operation status of each expansion board.

7The device adopts a fully modular plug and play structure design, supporting hot swapping of board cards, flexible configuration, easy maintenance, and also serves as a future power plant/Adding or modifying timing signal interfaces during substation renovation and expansion provides convenience.

GPSIndicators of Beidou dual-mode timing device

1Time source:GPSBeidouCDMATheIRIG-BConstant temperature crystal oscillatorOCXOAtomic clocks are optional;

2Power supply:220V/110VAdaptive AC and DC,Dual power redundancy;

3．GPSreceiver module

Receiving frequency（GPS L1）：1575.42MHz（L1Signal).

Receiver sensitivity: Capture<-160dBWTracking<-163dBW.

Simultaneous tracking: Under normal conditions, it can be tracked simultaneously8～16pieceGPSSatellite;

When the device is cold started, it should not be less than4Satellite;

When the device is hot started, it should not be less than1A satellite.

Capture time: When the device is cold started2minWhen the device is hot started20s.

4Beidou receiving module

Receiving frequency（BD2 B1）：1561.098±4MHz.

Receiver sensitivity:-157.6dBW；

TTFFCold start:35s,warm start:1s,Lost lock recapture:<1s；

5．MTBF≥80000Hour; Average repair time（MTTR）Generally not greater than30Divide. Under normal usage conditions, no maintenance is required.

6Output time and Coordinated Universal Time（UTC）Time synchronization accuracy: ≤30nS.

7Timing accuracy: pulseBCode:0.1MSSerial port:10MS，NTP/SNTP：0.2-10ms；

8Time keeping unit timing accuracy: Selection of crystal oscillator for time keeping unitOCXOThe punctuality accuracy is better than7*10^-9(0.42MS/min).

GPSQuality service of Beidou dual-mode timing device

1Ruicheng clock synchronization products come with a three-year warranty,Lifetime maintenance.

2On site online operation equipment malfunctions, maintenance personnel24Arrive on site within hours (special circumstances)12Within hours, the maintenance time is generally not more than30minute.

3Experienced engineers provide you with24Hour by hour technical support.

The above isGPSIntroduction to Beidou dual-mode timing device.