CN205195724U

CN205195724U - Time monitoring system

Info

Publication number: CN205195724U
Application number: CN201521019132.5U
Authority: CN
Inventors: 熊文贤; 沈龙; 赵泽彪; 李锐; 李旭
Original assignee: Zhaotong Power Supply Bureau of Yunnan Power Grid Co Ltd
Current assignee: Zhaotong Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2016-04-27
Anticipated expiration: 2025-12-10

Abstract

The utility model relates to a time monitoring system. Its purpose be for provide a simple structure, easy and simple to handle, measure accurate monitoring system. The utility model discloses a satellite clock module, time monitoring module, network platform and switch. The serial sign indicating number output of satellite clock module is connected with the serial sign indicating number receiving terminal of time monitoring module, and the message output of satellite clock module passes through the switch to be connected with the message sink of time monitoring module, and the time signal output of satellite clock module and the time signal output of time monitoring module are connected with network platform's time signal receiving terminal respectively. Sending message signal and IRIG -B code signal through satellite clock module respectively to the time monitoring module, obtaining message signal delay value and time monitoring module self delay value respectively, just obtain going on the network delay value of monitoring with two length of delay summations, the measured data degree of accuracy improves greatly.

Description

Time supervision system

Technical field

The utility model relates to time supervision field, a kind of power station, particularly relates to a kind of time supervision system.

Background technology

When current domestic electrical network high speed development, develop on a large scale very much although the construction of clock synchronization system has had, but still there is many weak points, mainly time synchronized does not form networking, lacks clock synchronization system Centralizing inspection control device and method.During current network pair, delay measuring method is in application layer based on target pingpong theory during software, is realize on the existing protocol basis of traditional transformer station or intelligent station.

And existing time delay measurement technology local area network (LAN) in the index of delay measurements accuracy can only reach 10ms, if network is complicated, index meeting super 10ms far away, but there are minority device such as PMU, traveling wave ranging device, lighting location device etc. will far above 10ms for the requirement of time accuracy in electric power system, so, application prior art cannot meet application request completely, for the manipulation of transformer station and operation bring inconvenience.

Utility model content

The technical problems to be solved in the utility model be to provide a kind of structure simple, manipulate easy, measure correct time monitoring system.

The utility model time supervision system, wherein, comprise satellite clock module and time supervision module, the serial code output of satellite clock module is connected with the serial code receiving terminal of time supervision module, and the message output of satellite clock module is connected with the message sink of time supervision module.

The utility model time supervision system, the message output of wherein said satellite clock module is connected by switch with between the message sink of time supervision module.

The utility model time supervision system, wherein said time supervision system also comprises the network platform, and the time signal receiving terminal of the network platform is connected with the time signal output of satellite clock module and the time signal output of time supervision module respectively.

The utility model time supervision system difference from prior art is: the utility model sends message signals and serial time coded signal by satellite clock module respectively to time supervision module, obtain message signals length of delay and time supervision module its temporal length of delay respectively, two length of delays are added the network delay value just obtaining will carrying out monitoring, measurement data accuracy improves greatly, and delay measurements accuracy is at about 200ns.The each moment value monitored and network delay are transferred to the network platform respectively, the data received and Network Delay Model contrast by the network platform, determine the accuracy of the network delay value monitored further, ensure that network delay value electrical network normally run can in tolerance range.

Below in conjunction with accompanying drawing, the utility model time supervision system is described further.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of the utility model time supervision system.

Embodiment

As shown in Figure 1, be the structured flowchart of the utility model time supervision system, comprise satellite clock module 1, time supervision module 2, the network platform 3 and switch 4.The serial code output of satellite clock module 1 is connected with the serial code receiving terminal of time supervision module 2, the message output of satellite clock module 1 is connected with the message sink of time supervision module 2 by switch 4, and the time signal output of satellite clock module 1 is connected with the time signal receiving terminal of the network platform 3 respectively with the time signal output of time supervision module 2.

Operation principle of the present utility model is: time supervision module 2 can receive serial time coded signal, carry out serial time code (IRIG-B code) signal monitoring, can message signals be received again, the network signal time delay between satellite clock module 1 and time supervision module 2 is monitored.Satellite clock module 1 externally sends message signals, and carry out record to sending the message signals moment, the dispatch moment of record is transferred to time supervision module 2 and the network platform 3 respectively, message signals is transferred to time supervision module 2 by Ethernet and switch 4, time supervision module 2 carries out record to receiving the message signals moment, and time supervision module 2 receives message signals moment and satellite clock module 1, and to send the difference in message signals moment be message signals length of delay.Satellite clock module 1 externally sends IRIG-B coded signal, time supervision module 2 pairs of IRIG-B coded signals receive, because the transmission of IRIG-B coded signal adopts short fiber line, time of delay is negligible, satellite clock module 1 can be sent the IRIG-B coded signal moment regards time supervision module 2 as and receives the IRIG-B coded signal moment, and to this moment carry out record, and time supervision module 2 carries out record to the moment self really monitoring IRIG-B coded signal and complete reception, time supervision module 2 really monitors IRIG-B coded signal and completes the time of reception and satellite clock module 1 to send the difference in IRIG-B coded signal moment be time supervision module 2 its temporal length of delay, message delay value and time supervision module 2 its temporal length of delay sum are exactly the network delay value that will carry out monitoring.After time supervision module 2 pairs of network delay value are monitored, the each moment value monitored and network delay are transferred to the network platform 3 respectively, the data received and Network Delay Model contrast by the network platform 3, determine network delay whether electrical network normally run can in tolerance range.

The utility model time supervision system, message signals and IRIG-B coded signal is sent respectively to time supervision module 2 by satellite clock module 1, obtain message signals length of delay and time supervision module 2 its temporal length of delay respectively, two length of delays are added the network delay value just obtaining will carrying out monitoring, measurement data accuracy improves greatly, and delay measurements accuracy is at about 200ns.The each moment value monitored and network delay are transferred to the network platform 3 respectively, the data received and Network Delay Model contrast by the network platform 3, determine the accuracy of the network delay value monitored further, ensure that network delay value electrical network normally run can in tolerance range.The utility model structure is simple, it is easy to manipulate, measure accurately, compared with prior art has obvious advantage.

Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.

Claims

1. a time supervision system, it is characterized in that: comprise satellite clock module (1) and time supervision module (2), the serial code output of satellite clock module (1) is connected with the serial code receiving terminal of time supervision module (2), and the message output of satellite clock module (1) is connected with the message sink of time supervision module (2).

2. time supervision system according to claim 1, is characterized in that: be connected by switch (4) between the message output of described satellite clock module (1) and the message sink of time supervision module (2).

3. time supervision system according to claim 1, it is characterized in that: described time supervision system also comprises the network platform (3), the time signal receiving terminal of the network platform (3) is connected with the time signal output of satellite clock module (1) and the time signal output of time supervision module (2) respectively.