CN203761423U

CN203761423U - Switch having function of analyzing sampled data

Info

Publication number: CN203761423U
Application number: CN201420007787.XU
Authority: CN
Inventors: 贾滕飞
Original assignee: BEIJING ZHONGKE TENGYUE TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: BEIJING ZHONGKE TENGYUE TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2014-01-07
Filing date: 2014-01-07
Publication date: 2014-08-06
Anticipated expiration: 2024-01-07

Abstract

The utility model discloses a switch having a function of analyzing sample data. The switch comprises a housing. A CPU module, a switch analyzing modules and two parallel power supplies are disposed in the housing. The CPU module is connected with the switch analyzing modules. The switch analyzing modules are connected with multiple interfaces in the outer surface of the housing. An alarm module is further disposed in the housing. The alarm module is connected with a signal port of the CPU module. Input ends of the two power supplies are connected with external mains electricity. The switch having the function of analyzing sampled data can detect, from the source, whether an SMV message sent by each merging unit is out of order and determine whether the messages are sent at even intervals, can play a certain auxiliary determination role when a protective measurement and control apparatus gives a sampling warning, is helpful in finding the source of a problem, and helps to improve the efficiency of solving a problem.

Description

There is the switch of sampled data analytic function

Technical field

The utility model relates to a kind of switch with sampled data analytic function.

Background technology

In digital transformer substation, simplify widely the secondary connection of transformer substation system, saved cable cost and operating expenses, reduced floor space.Numerous and diverse cable connection of traditional transformer station is reduced to optical cable, utilizes optical cable transmission data.Compared with traditional transformer station, a large amount of sampled datas passes to protection measure and control device by switch, will affect the normal operation of protection measure and control device in the time that sampled data transmission appearance is abnormal.In the transformer station of existing networking mode, a large amount of SMV messages transmit by process layer switch.If what therefore can monitor from source whether SMV message that merge cells sends exist that abnormal conditions will contribute to judge SMV message is to produce or occur in the source merge cells that SMV message produces in transmitting procedure extremely, simplify the step of abnormal investigation, be conducive to find rapidly problem place.

Summary of the invention

For the problems referred to above, the purpose of this utility model is to provide a kind of switch with sampled data analytic function, can meet the object of process layer of digitalization transformer substation SMV sampling message being carried out to simple analysis.

For achieving the above object, a kind of switch with sampled data analytic function described in the utility model, comprise housing, in described housing, be provided with CPU module, switch analysis module and two power supplys in parallel, wherein, described CPU module connects switch analysis module, and switch analysis module connects the multiple interfaces in described housing outer surface; One alarm module is also set in described housing, and this alarm module connects the signal port of described CPU module; The input of two described power supplys connects outside civil power; The output of two described power supplys is divided into multiple Zhi Duan, a rectifying and wave-filtering voltage transformation module of each Zhi Duanjun series winding, a metal-oxide-semiconductor field effect transistor, and be connected in housing with on electric device.

Preferably, in described housing outer surface, one warning device is set, this warning device connects described alarm module.

The beneficial effects of the utility model are:

The utility model can detect from source whether the SMV message that merge cells sends exists out of order; judge that whether message is for uniformly-spaced sending; in the time that sending sampling alarm, protection measure and control device can play certain auxiliary differentiation effect; contribute to the source that searches problem, improved the efficiency of dealing with problems.The utility model has also increased dual power supply redundancy function and alarm function, has improved the safety and stability of switch, is the novel switch device that a kind of digital composite Substation process-level uses.Switch can regularly be added up and preserve the partial information of SMV message, is convenient to, when SMV message, exception record occurs to inquire about when abnormal.

Brief description of the drawings

Fig. 1 is the structural representation described in the utility model embodiment with the switch of sampled data analytic function.

Embodiment

Below in conjunction with Figure of description, the utility model is further described.

Be illustrated in figure 1 a kind of switch with sampled data analytic function, comprise housing, in described housing, be provided with CPU module, switch analysis module and two power supplys in parallel, wherein, described CPU module connects switch analysis module, and switch analysis module connects the multiple interfaces in described housing outer surface; One alarm module is also set in described housing, and this alarm module connects the signal port of described CPU module, in described housing outer surface, one warning device is set, and this warning device connects described alarm module; The input of two described power supplys connects outside civil power; The output of two described power supplys is divided into multiple Zhi Duan, a rectifying and wave-filtering voltage transformation module of each Zhi Duanjun series winding, a metal-oxide-semiconductor field effect transistor, and be connected in housing with on electric device.In the time of any one power supply generation ground short circuit fault wherein, this field effect transistor can prevent that another power supply from ground short circuit occurring simultaneously, effectively raises the safety and stability of switch.

Below in conjunction with embodiment, the utility model is further illustrated, following embodiment is illustrative, is not determinate, can not limit protection range of the present utility model with following embodiment.

A kind of switch with sampled data analytic function, as shown in Figure 1, comprise the CPU management module, switch analysis module and the power supply that in housing and housing, arrange, CPU management module electrical connection switch analysis module, the electrical connection of switch analysis module is arranged on the exchange interface of surface of shell.One alarm module is set in housing, the input/output end port of one end connection management CPU module of this alarm module, the other end of alarm module connects the alarm signal output ends mouth being arranged on housing, relay closes or the disconnection of CPU management module controls alarm module, and by the cable being connected with alarm signal output ends mouth, alarm signal is transferred out, make operating personnel know efficiently rapidly exchange alarm signal.

Two power supplys are set in housing, and between two power supplys, for being connected in parallel, each power supply includes a rectifying and wave-filtering voltage transformation module, and the electric power after two power supply parallel connections is output as all hardware power supply in switch.The output of the rectifying and wave-filtering voltage transformation module on the branch road at the each power supply place MOSFET field effect transistor of all connecting, in the time of any one power supply generation ground short circuit fault wherein, this field effect transistor can prevent that another power supply from ground short circuit occurring simultaneously, effectively raises the safety and stability of switch.

Switch described in the utility model need to complete two processes in the time that sampled data is analyzed: 1, the FPGA(field programmable gate queue in switch analysis module) processing procedure; 2, CPU management processing procedure.

FPGA processing procedure: the existing 4-bit nibble data transaction receiving becomes the data of 8-bit, is deposited in message buffer.When message enters behind buffering area, FPGA extracts the keyword in message, in the time that being 0x88ba, keyword illustrates that this message is the data sampling SMV message receiving, FPGA records this message time of reception t, resolve subsequently SMV message, extract in SMV message with SmpCnt(Sample Counter) information.Time of reception and sample counter information are sent to CPU management by FPGA.

CPU management processing procedure: CPU, after the time of reception and sample counter information of sampling message that receives FPGA transmission, stores SMV information respectively in the mode of entry the receiving port of time of reception, Sample Counter numerical value and the switch of every SMV message.CPU compares two adjacent SMV message informations.The sampling time of the sampling time of a upper items for information and this entry is carried out to difference subtracts each other, in the time that difference is greater than 260us or is less than 240us, determine sampled value and send interval abnormal (supposition merge cells sends 4000 frame SMV messages each second, and sampled value sends interval centrifugal pump within 10us).When the Sample Counter numerical value of SMV message is not to determine the SMV message that device sends while increasing progressively successively to have out of order phenomenon (in the time that Sample Counter value is 3999, the Sample Counter numerical value that next frame message carries should be 0).

Above; it is only preferred embodiment of the present utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claim was defined.

Claims

1. one kind has the switch of sampled data analytic function, it is characterized in that, comprise housing, in described housing, be provided with CPU module, switch analysis module and two power supplys in parallel, wherein, described CPU module connects switch analysis module, and switch analysis module connects the multiple interfaces in described housing outer surface; One alarm module is also set in described housing, and this alarm module connects the signal port of described CPU module; The input of two described power supplys connects outside civil power; The output of two described power supplys is divided into multiple Zhi Duan, a rectifying and wave-filtering voltage transformation module of each Zhi Duanjun series winding, a metal-oxide-semiconductor field effect transistor, and be connected in housing with on electric device.

2. the switch with sampled data analytic function according to claim 1, is characterized in that, in described housing outer surface, one warning device is set, and this warning device connects described alarm module.