CN105629116A

CN105629116A - Optical digital relay protection testing instrument for intelligent transformer substation debugging

Info

Publication number: CN105629116A
Application number: CN201610180434.3A
Authority: CN
Inventors: 王周蓉
Original assignee: CHENGDU TIANJIN INSTRUMENT Co Ltd
Current assignee: CHENGDU TIANJIN INSTRUMENT Co Ltd
Priority date: 2016-03-28
Filing date: 2016-03-28
Publication date: 2016-06-01

Abstract

The invention discloses an optical digital relay protection testing instrument for intelligent transformer substation debugging. The optical digital relay protection testing instrument includes a switching quantity input module, an switching quantity output module, an optical fiber interface module, a small-signal output module, a DSP module, an FPGA module, a digital-to-analog conversion module, a FLASH module, an RAM module, a communication module, an HPI interface module and a PHY module; the DSP module is connected with the FPGA module through the HPI interface module; the FPGA module is connected with the FLASH module and the optical fiber interface module; the DSP module is connected with the RAM module; the FPGA module is connected with the communication module, the switching quantity input module and the switching quantity output module through the PHY module; and the DSP module is connected with the small-signal output module through the digital-to-analog conversion module. According to the optical digital relay protection testing instrument of the invention, based on the joint effects of the FPGA module, the DSP module, the optical fiber interface module and the like, optical signals of faults of a digital substation can be generated, so that functional testing of the relay protection device of the digital substation can be realized.

Description

Towards the light digital relay protection tester of intelligent substation debugging

Technical field

The present invention relates to a kind of light digital relay protection tester towards intelligent substation debugging.

Background technology

Along with the high speed development of national economy, all trades and professions are increasing to the demand of electric power, power supply department provide the quality (stability, continuity and adjoint service) of supply of electric power require also more and more higher, power system for a long time is to generating, and the automatic improving becoming electricity and power distribution system drops into bigger. Relaying device is one of the most important second set of power system, is the guarantee of safe operation of power system. Domestic and international numerous examples proves, it relates to the large scale system accident that power failure range is wider, and mostly incorrect action with relaying device has direct or indirect relation. Therefore, reasonably arrange relay protection constant value, it is to increase relay protection running management level, it is the essential condition ensureing electric power netting safe running.

Owing to the information feedback amount of tradition substation is little, failure message is difficult to Macro or mass analysis, wiring complexity is loaded down with trivial details, and have the problems such as security risk for on-the-spot test operation personnel, and the develop rapidly of in these years information, communication and network technology, people have started to attempt to utilize optical communication to overcome these shortcomings of tradition substation, in addition country is to the support energetically of digital transformer substation, the light digitization making substation comprise power system must become trend, for this kind of change, certainly lead to corresponding product and match.

Summary of the invention

It is an object of the invention to overcome the deficiencies in the prior art; a kind of light digital relay protection tester towards intelligent substation debugging is provided; by the acting in conjunction of the devices such as FPGA module, DSP module, optical fiber interface module; produce the optical signal of digital transformer substation fault, realize the function test to numeral substation relay protection device.

It is an object of the invention to be achieved through the following technical solutions: a kind of light digital relay protection tester towards intelligent substation debugging, comprise switching input module, output switch parameter module, optical fiber interface module, small-signal output module, DSP module, FPGA module, D/A converter module, FLASH module, RAM module, communication module, HPI interface module and PHY module, wherein, DSP module is connected with FPGA module by HPI interface module, FPGA module and FLASH module and optical fiber interface model calling, DSP module is connected with RAM module, FPGA module is also by PHY module and the module that communicates, switching input module and output switch parameter model calling, DSP module is connected with small-signal output module by D/A converter module.

Further, described switching input module is connected with FPGA module by input level conversion module and Phototube Coupling module successively.

Further, described tester also comprises the power supply module for powering, and this power supply module comprises the 220V AC power load module, rectification filtering module and the control inputs module that connect successively.

Further, described optical fiber interface module comprises optical fiber ST interface and B code interface.

Further, described communication module comprises RJ45 network module, GPS module and debugging interface module.

Further, described small-signal output module is also connected with D/A converter module by second-order filter module.

Further, described DSP module is TMS320F2812 chip.

The invention has the beneficial effects as follows:

1) the present invention is by the acting in conjunction of the devices such as FPGA module, DSP module, optical fiber interface module; the optical signal meeting the various digital transformer substation faults that digital transformer substation relaying device stipulations require can be produced, effectively realize the function test to numeral substation relay protection device.

2) numerary signal that DSP module of the present invention generates can be that analog signal output is to digital transformer substation relaying device by output switch parameter module converter; the analog response signal of relaying device is then received by switching input module, then after processing by DSP module through FPGA module be given to communication module reach computer.

3) in the present invention, DSP module is connected with small-signal output module by D/A converter module, can export the simulating signal of small power, it is thus possible to tested by the debugging unit of the mutual inductor of numeral substation relay protection device.

Accompanying drawing explanation

Fig. 1 is the circuit block diagram of tester of the present invention.

Embodiment

The technical scheme of the present invention is described in further detail below in conjunction with accompanying drawing, but protection scope of the present invention is not limited to the following stated.

As shown in Figure 1, This embodiment describes a kind of light digital relay protection tester towards intelligent substation debugging, comprise switching input module, output switch parameter module, optical fiber interface module, small-signal output module, DSP module, FPGA module, D/A converter module, FLASH module, RAM module, communication module, HPI interface module and PHY module, wherein, DSP module is connected with FPGA module by HPI interface module, FPGA module and FLASH module and optical fiber interface model calling, DSP module is connected with RAM module, FPGA module is also by PHY module and the module that communicates, switching input module and output switch parameter model calling, DSP module is connected with small-signal output module by D/A converter module.

Further, described tester also comprises industrial computer, and described industrial computer is connected with DSP module, and described industrial computer is also connected with indicating meter, operation push-button and touch pad, wherein touch pad also can be replaced rotation mouse, and this rotation mouse generally comprises mouse ball, left mouse button and right mouse button.

In tester of the present invention, power supply module receives 220v alternating-current, exports the direct current of 5v and positive and negative 12v, is other module for power supply; Communication module supports TCP/IP, accepts the instruction of external PC, also pays to external PC by the result data of DSP module, carry out two-way communication with PC; FPGA module is responsible for the packing etc. of the process of agreement, the conversion of form and information; Optical fiber interface module, receiving external output optical signal after the correct level signal of FPGA module, on the contrary, also can convert level signal to by the optical signal that outside receives and give FPGA module; DSP module only and between FPGA module carries out two-way communication, receive the instruction from FPGA module, and send instructions under FPGA module, DSP module unilaterally receives the On-off signal signal from outside simultaneously, one-sided externally output switch amount output signal and digital signal level, digital signal level wherein is paid to D/A converter module; D/A converter module is receiving after the digital quantity of DSP module, is responsible for converting analog quantity to and externally exports with the name of small-signal.

During test; the interface of RJ45 network module is connected with outer PC; PC sends the parameter of the various faults of digital transformer substation by RJ45 network module to FPGA module; the fault parameter being subject to is forwarded to DSP module by FPGA module; DSP module generates the numerary signal of corresponding failure; pass FPGA module again back by it by after the process packing of IEC61850 stipulations, then it is fault optical signal by optical fiber interface module converter, is sent to the optical signal input aperture of digital transformer substation relaying device. Relaying device is responded subsequently is back to optical fiber interface module; above phase inverse processing is carried out successively again by optical fiber interface module, FPGA module, DSP module, FPGA module, RJ45 network module; PC is passed again back after process; the response signal passed back by PC carries out analyzing, process and draw test result, and stores.

In the present invention, DSP module can select TMS320F2812 chip, and RAM module can select IS6lLV51216-8 chip, and output switch parameter module can select ZP-1050 device, and switching input module can select ZP-1052 device.

The light digital relay protection tester towards intelligent substation debugging according to the present invention is described in an illustrative manner above with reference to accompanying drawing. But; those skilled in the art are to be understood that; for the above-mentioned light digital relay protection tester towards intelligent substation debugging proposed by the invention; various improvement can also be made on the basis not departing from content of the present invention; or wherein part technology feature is carried out equivalent replacement; within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention. Therefore, protection scope of the present invention should be determined by the content of appending claims.

Claims

1. towards the light digital relay protection tester of intelligent substation debugging, it is characterized in that: comprise switching input module, output switch parameter module, optical fiber interface module, small-signal output module, DSP module, FPGA module, D/A converter module, FLASH module, RAM module, communication module, HPI interface module and PHY module, wherein, DSP module is connected with FPGA module by HPI interface module, FPGA module and FLASH module and optical fiber interface model calling, DSP module is connected with RAM module, FPGA module is also by PHY module and the module that communicates, switching input module and output switch parameter model calling, DSP module is connected with small-signal output module by D/A converter module.

2. the light digital relay protection tester towards intelligent substation debugging according to claim 1, it is characterised in that: described switching input module is connected with FPGA module by input level conversion module and Phototube Coupling module successively.

3. the light digital relay protection tester towards intelligent substation debugging according to claim 1; it is characterized in that: described tester also comprises the power supply module for powering, this power supply module comprises the 220V AC power load module, rectification filtering module and the control inputs module that connect successively.

4. the light digital relay protection tester towards intelligent substation debugging according to claim 1, it is characterised in that: described optical fiber interface module comprises optical fiber ST interface and B code interface.

5. the light digital relay protection tester towards intelligent substation debugging according to claim 1, it is characterised in that: described communication module comprises RJ45 network module, GPS module and debugging interface module.

6. the light digital relay protection tester towards intelligent substation debugging according to claim 1, it is characterised in that: described small-signal output module is also connected with D/A converter module by second-order filter module.

7. the light digital relay protection tester towards intelligent substation debugging according to claim 1, it is characterised in that: described DSP module is TMS320F2812 chip.