CN203166942U

CN203166942U - Time synchronization device based on IEEE1588 protocol

Info

Publication number: CN203166942U
Application number: CN 201320089352
Authority: CN
Inventors: 赵峰; 吴俊华
Original assignee: NANJING XUNHUI TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: NANJING XUNHUI TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-02-27
Filing date: 2013-02-27
Publication date: 2013-08-28
Anticipated expiration: 2023-02-27

Abstract

The utility model discloses a time synchronization device based on IEEE1588 protocol. The device comprises a clock source module, a main control module formed by a processor and a FPGA unit, a device interface module connected with a device to be time-synchronized and an alarm output module, wherein the FPGA unit receives a clock source signal from the clock source module and transmits the clock source signal to the processor; the processor transmits the process result to the FPGA unit, the FPGA unit controls the start or stop of the alarm output module according to the process result, simultaneously the device interface module transmits the timing signal to each device to be time-synchronized. The high-precision time synchronization of various devices in an electric power system is realized by the Ethernet IEEE1588 protocol, and the cost and the power consumption are low.

Description

A kind of time synchronism apparatus based on the IEEE1588 agreement

Technical field

The utility model relates to the Time synchronization technique field of each equipment in the electric power system, particularly a kind of based on the IEEE1588 agreement and can realize high accuracy to the time time synchronism apparatus.

Background technology

The expansion of electric power system scale and development of control technique in power system have all proposed new requirement to the time reference of each dispatching patcher and power plant and transformer station.In fact, electric power system internal information exchange capacity is big, state changes soon, has only and satisfies certain clock synchronization accuracy, provides safeguard for functions such as phase bit comparison, failure logging, event sequence startup.

Traditional ground elapsed time synchronization link is to adopt NTP(Network Time Protocol) the load mode realization, developed into the V4 version at present, SNTP is the simplification version of NTP.The shortcoming of agreement maximum is to satisfy the time transmitting accuracy of microsecond level, this and the synchronous required nanosecond of split-second precision, and time precision can not be compared.And the gps time synchro system of employing one-way channel, though the acquisition of synchronizing signal is reliable and stable, the precision height, cost compares higher, failure rate is very high under the situation of losing star or geographical conditions rugged environment, and has certain information security risk.Existing power system field mostly is to adopt the gps satellite receiver to obtain temporal information, and does not have managerial ability for a plurality of receivers, causes temporal difference to prevent, and can not share a GPS resource substantially between each station, causes waste serious.

Therefore only possessed and unified operation monitoring and the accident analysis that each system just can be better realized in accurate clock source, for equipment provides precise time most important, the sequencing of ability analysis accident generation provides foundation like this.

Summary of the invention

The purpose of this utility model is that the defective at prior art provides a kind of time synchronism apparatus based on the IEEE1588 agreement, its by the high accuracy using Ethernet protocol and realize plurality of devices in the electric power system to the time.

For achieving the above object, the technical scheme that the utility model is taked is: a kind of time synchronism apparatus based on the IEEE1588 agreement, is connected device interface module and the alarm output module for the treatment of time service equipment at the main control module that comprises the clock source module, is made up of processor and FPGA unit;

The FPGA unit is from clock source module receive clock source signal, and clock source signals is transferred to processor handles; Processor sends to the FPGA unit with result, and the FPGA unit starts or stops according to result control alarm output module, simultaneously by device interface module to treating that respectively time service equipment sends the time service time signal.

In order to make the field technician can more intuitively know synchronised clock information and the time service situation of each equipment in the electrical network, the utility model also comprises display module, processor shows signal to display module output, is specially the synchronised clock information of respectively treating time service equipment etc.

Further, above-mentioned clock source module comprises gps clock receiver and external clock source interface, and the FPGA unit receives gps clock source signal external clock source signal respectively by gps clock receiver and external clock source interface respectively.

In order to satisfy the time service demand of many equipment in the electrical network, the ethernet ieee 1588 exact time synchronization agreements of using the utility model realize the time service function to grid equipment, be master clock with the gps clock that gps receiver was received, the desirable control centre of external clock reference clock is as from clock; Device interface module is provided with more than one and connects the switch for the treatment of time service equipment respectively, the FPGA unit by switch to treating that time service equipment sends the time service time signal.On the basis of ethernet ieee 1588 agreements, the high accuracy that the utility model can be realized system in conjunction with existing best master clock algorithm to the time.

The beneficial effects of the utility model are: simple in structure, power consumption is lower, can in conjunction with ethernet ieee 1588 exact time synchronization agreements realized to the time service function of grid equipment and high accuracy to the time, largely saved system cost.The setting of Zhong Yuan for a long time also can guarantee the precision of system's time service under the situation of bad weather.

Description of drawings

Figure 1 shows that structural representation of the present utility model.

Embodiment

For content of the present utility model is become apparent more, be described further below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, the main control module that time synchronism apparatus based on the IEEE1588 agreement of the present utility model, its a kind of specific embodiment comprise the clock source module, be made up of processor and FPGA unit, be connected device interface module, alarm output module and the display module for the treatment of time service equipment; The clock source module comprises gps clock receiver and external clock source interface, the FPGA unit receives gps clock source signal external clock source signal respectively by gps clock receiver and external clock source interface respectively, and clock source signals is transferred to processor handles; When handling, the utility model utilization ethernet ieee 1588 exact time synchronization agreements realize the time service function to grid equipment, are master clock with the gps clock that gps receiver was received, the desirable control centre of external clock reference clock.Processor sends to the FPGA unit with result, and the FPGA unit starts or stops according to result control alarm output module, simultaneously by device interface module to treating that respectively time service equipment sends the time service time signal; Processor shows signal to display module output, is specially the synchronised clock information of respectively treating time service equipment etc.

Device interface module is provided with more than one and connects the switch for the treatment of time service equipment respectively, the FPGA unit by switch to treating that time service equipment sends the time service time signal.On the basis of ethernet ieee 1588 agreements, the high accuracy that the utility model can be realized system in conjunction with existing best master clock algorithm to the time.

Concrete case study on implementation only is preferable case study on implementation of the present utility model described in the utility model, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be as technology category of the present utility model.

Claims

1. time synchronism apparatus based on the IEEE1588 agreement, is connected device interface module and the alarm output module for the treatment of time service equipment at the main control module that comprises the clock source module, is made up of processor and FPGA unit;

2. the time synchronism apparatus based on the IEEE1588 agreement according to claim 1 is characterized in that, also comprises display module, and processor shows signal to display module output.

3. the time synchronism apparatus based on the IEEE1588 agreement according to claim 1 and 2, it is characterized in that, the clock source module comprises gps clock receiver and external clock source interface, and the FPGA unit receives gps clock source signal and external clock source signal by gps clock receiver and external clock source interface respectively.

4. the time synchronism apparatus based on the IEEE1588 agreement according to claim 1 and 2, it is characterized in that, device interface module is provided with more than one and connects the switch for the treatment of time service equipment respectively, the FPGA unit by switch to treating that time service equipment sends the time service time signal.