CN203275631U - Intelligent detection system of microcomputer type relay protection tester - Google Patents

Intelligent detection system of microcomputer type relay protection tester Download PDF

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Publication number
CN203275631U
CN203275631U CN 201320352996 CN201320352996U CN203275631U CN 203275631 U CN203275631 U CN 203275631U CN 201320352996 CN201320352996 CN 201320352996 CN 201320352996 U CN201320352996 U CN 201320352996U CN 203275631 U CN203275631 U CN 203275631U
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China
Prior art keywords
voltage
relay protection
interface
electronic load
power supply
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CN 201320352996
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Chinese (zh)
Inventor
张涛
黄晓明
杨涛
邵卫祥
王松
蔡耀红
吴俊�
张岩
蒋奕屏
王诚海
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Zhejiang Electric Power Co Ltd
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Abstract

The utility model discloses an intelligent detection system of a microcomputer type relay protection tester. A conventional microcomputer type relay protection tester has problems brought by hand-operated, interrupted and split detections. The technical scheme is characterized in that a PC machine is respectively connected with a power characteristic integrated detection device and an electronic load through a switch; voltage, current data acquisition input interfaces of the power characteristic integrated detection device are respectively connected with current and voltage output interfaces of the electronic load; the power characteristic integrated detection device is provided with input and output interfaces; the electronic load is provided with current and voltage input interfaces; and all communication connecting ports are converted to standard network ports by an interface conversion module, and Ethernet is formed by network line connection. The intelligent detection system of the microcomputer type relay protection tester realizes intelligent one-piece detection of a plurality of parameters of the microcomputer type relay protection tester, like stable state parameters, transient parameters, time testing accuracy, and the like.

Description

A kind of test instrument for microcomputer-based relay protection intelligent checking system
Technical field
The utility model relates to detection, the calibration and certification equipment of test instrument for microcomputer-based relay protection, specifically a kind of test instrument for microcomputer-based relay protection intelligent checking system.
Background technology
National Energy Board had issued People's Republic of China's power industry standard in 2011: DL/T 624-2010 " relay protection microcomputer type test unit technical conditions " (replacing DL/ T 624-1997).Comparing Main change with DL/T 624-1997 has: the technical indicator to relay protection microcomputer type test unit is revised; Increased the performance index of protective relaying device test unit and inspection rule and the method for function; Revise and increased functional description; Increased the requirement of sync cap, Ethernet interface and G P S interface.
Although amended DL/ T 624-2010 " relay protection microcomputer type test unit technical conditions " has proposed more specifically requirement to relay protection microcomputer type test unit; stipulated relevant detection rules or standard, for the examination of relay-protection tester provides foundation with regularly detecting.But at present the method for testing to the correlation parameter of relay-protection tester such as Steady-state Parameters (as the accuracy of relay-protection tester output voltage, electric current, total percent harmonic distortion, DC component, phase shift range, amplitude versus frequency characte etc.), transient state parameter (as response speed and the synchronism of voltage, electric current) and time measurement accuracy (continue and protect the accuracy of the tested relay of tester detection, protection and automatic safety device actuation time) etc. is also very backward.Mostly adopt at present manual methods: utilize the test of high accuracy number multimeter alternating voltage, current amplitude precision and amplitude versus frequency characte; Utilize phase frequency instrumentation examination electric current and voltage phase place; Utilize storage oscilloscope test response speed (being the transient state parameter); Seldom time accuracy is tested.Obviously there is obvious disadvantage in these methods:
(1) digital multimeter can only be measured the parameter of a phase at every turn.Test three-phase voltage and electric current be the reconfiguration line repeatedly, needs simultaneously the manual record raw data.
(2) the phase frequency meter generally once also can only be measured the phasing degree between certain phase current and voltage, also needs repeatedly reconfiguration line and manual record raw data.
When (3) utilizing storage oscilloscope to measure the transient state parameter, manually setting operation is loaded down with trivial details, often needs repeatedly to attempt just capturing signal, and artificial reading error is larger.
(4) tester easily makes mistakes because of fatigue because often needing the reconfiguration line and record raw data when test.
Though in recent years be seen in report relevant for integrated above-mentioned method of testing in the design philosophy of one, have no the pick-up unit that meets new standard.Therefore; according to national new standard DL/T 624-2010; utilize the mature technologies such as computer technology, microelectric technique, network communications technology, embedded technology and virtual instrument technique; make up a kind of intelligent checking system that integrates Steady-state Parameters, transient state parameter and the numerous parameters of time measurement accuracy of testing test instrument for microcomputer-based relay protection, have important practical significance.
Summary of the invention
Technical problem to be solved in the utility model be overcome traditional test instrument for microcomputer-based relay protection manually, interruption, gradation detect all drawbacks of bringing; a kind of intelligent checking system of test instrument for microcomputer-based relay protection is provided, detects with the disposable fully-automatic intelligent of realizing the numerous technical parameters of test instrument for microcomputer-based relay protection.
For this reason, the utility model adopts following technical scheme: a kind of test instrument for microcomputer-based relay protection intelligent checking system, comprise power supply characteristic comprehensive detection device, electronic load, PC and switch, it is characterized in that, described PC is connected with electronic load with the power supply characteristic comprehensive detection device respectively by switch; The voltage of power supply characteristic comprehensive detection device, current data Gather and input interface are connected with electric current, the Voltage-output interface of electronic load respectively, the power supply characteristic comprehensive detection device is provided with opens into and leaves interface, and electronic load is provided with electric current, voltage input interface; All communication connectors all are converted to the standard network interface by interface modular converter, connect to form Ethernet by netting twine.
PC (host computer) adopts the Ethernet interface communication to carry out exchanges data with test instrument for microcomputer-based relay protection (slave computer), has avoided making the limited problem of its usable range because of technical know-how; The detection software that after detection is completed, utilization is arranged on PC generates the Word form automatically, and form can generate the front template editor, also can user oneself edit after generation.The test of all technical parameters all meets the new standard DL/ T 624-2010 of country issue, and uninterrupted, disposable completing continuously, has improved accuracy, the safety and reliability of testing, has the investment of saving, reduces the characteristics of labour intensity.
further, described power supply characteristic comprehensive detection device comprises the DSP+ARM+CPLD kernel, the current operator amplifier, voltage operational amplifier, a plurality of 16 high-speed a/d modules, logic control circuit, high-speed sampling record mode piece and millisecond meter, logic control circuit is provided with the described interface of opening into and leave, the DSP+ARM+CPLD kernel is connected with 16 high-speed a/d modules, the other end of 16 high-speed a/d modules is connected with logic control circuit with current operator amplifier or voltage operational amplifier respectively, the other end of logic control circuit is connected with millisecond meter with high-speed sampling record mode piece, high-speed sampling record mode piece is connected netting twine and is connected with switch with millisecond meter, the DSP+ARM+CPLD kernel is connected with switch by netting twine, the current operator amplifier is provided with described current data Gather and input interface, voltage operational amplifier is provided with described voltage data Gather and input interface.
Further, described PC, switch, electronic load and power supply characteristic comprehensive detection device are placed in a rack, the front of described rack is equipped with the PC display screen and is placed with the drawer of keyboard, electric current, voltage input interface and open, leave on the side that interface is located at rack.
Further, built-in two programmed switches of electronic load.
The beneficial effect that the utlity model has is: the one, realize that the successively fully-automatic intelligent of many technical parameters of relay-protection tester detects; The 2nd, PC detection software sets the relay protection instrument detection scheme of each manufacturer production in advance, has avoided testing process because of the artificial possibility that participates in occurring mistake; The 3rd, by the program control switching wiring of PC, alleviated testing labour intensity, improved the safety and reliability of electrical connection; The 4th, host computer and slave computer adopt the Multi-netmouth communication, make detection system be easy to expansion and standard general.
The utility model has realized integrating the Intelligent Measurement of Steady-state Parameters, transient state parameter and the numerous parameters of time measurement accuracy of testing test instrument for microcomputer-based relay protection, and network communication mode makes the detection system extendability strong, and versatility is good, and cost performance is high.
Description of drawings
Fig. 1 is composition frame chart of the present utility model.
Embodiment
Test instrument for microcomputer-based relay protection intelligent checking system as shown in Figure 1, described PC is connected with electronic load with the power supply characteristic comprehensive detection device respectively by switch; Built-in two programmed switches of electronic load, the voltage of power supply characteristic comprehensive detection device, current data Gather and input interface are connected with electric current, the Voltage-output interface of electronic load respectively, the power supply characteristic comprehensive detection device is provided with opens into and leaves interface, and electronic load is provided with electric current, voltage input interface; All communication connectors all are converted to the standard network interface by interface modular converter, connect to form Ethernet by netting twine.The logic control circuit module open into, leave interface and be connected with the incoming interface of leaving, open of protecting tester that continues; The electric current of electronic load, voltage input interface and electric current, the Voltage-output interface of protecting tester that continues are connected.
described power supply characteristic comprehensive detection device is by the DSP+ARM+CPLD kernel, a plurality of 16 high-speed a/d modules, logic control circuit, high-speed sampling record mode piece and millisecond meter form, the logic control circuit module is provided with described opening into leaving interface, the DSP+ARM+CPLD kernel is connected with 16 high-speed a/d modules, the other end of 16 high-speed a/d modules is connected with logic control circuit with the curtage operational amplifier respectively, the other end of logic control circuit is connected with millisecond meter with high-speed sampling record mode piece, high-speed sampling record mode piece is connected netting twine and is connected with switch with millisecond meter, the DSP+ARM+CPLD kernel is connected with switch by netting twine.
Described PC, switch, electronic load and power supply characteristic comprehensive detection device are placed in a rack, the front of described rack is equipped with the PC display screen and is placed with the drawer of keyboard, electric current, voltage input interface and open, leave on the side that interface is located at rack.
Protect the test of tester carrying load ability to continue as example, the test of electric current load capacity: PC is regulated electronic load (resistance is by little increase) by network interface, the current value of load and the magnitude of voltage between load two ends are flow through in the measurement of power supply characteristic comprehensive detection device, measure the flex point that current precision, degree of distortion (interchange) do not exceed acceptability limit, be the peak power output of current source; The voltage load capacity: PC is by network interface regulating load (resistance is by reducing greatly); the power supply characteristic comprehensive detection device is measured by the current value of load and the magnitude of voltage between the relay-protection tester output port; measure the flex point that voltage accuracy, degree of distortion (interchange) do not exceed acceptability limit, be the peak power output of voltage source.Measurement data is installed after testing network interface and is uploaded the PC processing.
the function of described detection system, detecting software by PC realizes by the Ethernet interface exchanges data: PC is made different detection schemes according to different model by the continue port number of guarantor's tester of school in advance, only need call corresponding detection scheme during detection, network interface by standard is transferred the attitude link library, Automatic Control is tested to continue and protects tester output (product of a producer replaces with the title of this producer, the product of this producer's different model is connected by the program automatic search, but also do not have ready-made continuing to protect the yet output of the tested guarantor's tester that continues of semiautomatic control of tester for interface), control by the programmed switch on electronic load the signal acquisition circuit that each output channel successively accesses pick-up unit again, the access of electronic load and fine adjustment detect software by the network interface regulating and controlling by PC, the DSP of pick-up unit is responsible for signal sampling, processes and calculate, and ARM is responsible for the test of time accuracy and by network interface upload process result of calculation, CPLD is responsible for the logic control of pick-up unit passage, controls and opens into realizing time measurement and record ripple with the amount of leaving, the automatic record data of PC, revision of the convention data, the error of calculation, whether the automatic discrimination data are qualified, mode according to a preconcerted arrangement draw a conclusion (as overproof beating " * ", or directly sentencing defective), count according to port number, the verification of the output of tested equipment, automatically regulate the length and width of report, space not, report can be inquired about, the form user can be from editor, and the form that examining report is derived is word, provides the detection certificate by printer.
The above is only preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all falls in protection domain of the present utility model any simple modification, equivalent variations and modification that above embodiment does.

Claims (4)

1. test instrument for microcomputer-based relay protection intelligent checking system, comprise power supply characteristic comprehensive detection device, electronic load, PC and switch, it is characterized in that, described PC is connected with electronic load with the power supply characteristic comprehensive detection device respectively by switch; The voltage of power supply characteristic comprehensive detection device, current data Gather and input interface are connected with electric current, the Voltage-output interface of electronic load respectively, the power supply characteristic comprehensive detection device is provided with opens into and leaves interface, and electronic load is provided with electric current, voltage input interface; All communication connectors all are converted to the standard network interface by interface modular converter, connect to form Ethernet by netting twine.
2. test instrument for microcomputer-based relay protection intelligent checking system according to claim 1, it is characterized in that, described power supply characteristic comprehensive detection device comprises the DSP+ARM+CPLD kernel, the current operator amplifier, voltage operational amplifier, a plurality of 16 high-speed a/d modules, logic control circuit, high-speed sampling record mode piece and millisecond meter, logic control circuit is provided with the described interface of opening into and leave, the DSP+ARM+CPLD kernel is connected with 16 high-speed a/d modules, the other end of 16 high-speed a/d modules is connected with logic control circuit with current operator amplifier or voltage operational amplifier respectively, the other end of logic control circuit is connected with millisecond meter with high-speed sampling record mode piece, high-speed sampling record mode piece is connected netting twine and is connected with switch with millisecond meter, the DSP+ARM+CPLD kernel is connected with switch by netting twine, the current operator amplifier is provided with described current data Gather and input interface, voltage operational amplifier is provided with described voltage data Gather and input interface.
3. test instrument for microcomputer-based relay protection intelligent checking system according to claim 1 and 2; it is characterized in that; described PC, switch, electronic load and power supply characteristic comprehensive detection device are placed in a rack; the front of described rack is equipped with the PC display screen and is placed with the drawer of keyboard, electric current, voltage input interface and open, leave on the side that interface is located at rack.
4. test instrument for microcomputer-based relay protection intelligent checking system according to claim 1 and 2, is characterized in that, built-in two programmed switches of electronic load.
CN 201320352996 2013-06-19 2013-06-19 Intelligent detection system of microcomputer type relay protection tester Active CN203275631U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991209A (en) * 2015-06-19 2015-10-21 国网天津市电力公司 Optical digital relay protection testing instrument detection method
CN105510739A (en) * 2015-11-27 2016-04-20 国家电网公司 Intelligent protective relaying device detection system
CN106226718A (en) * 2016-07-12 2016-12-14 河南许继智能科技股份有限公司 A kind of batch testing Electric control or the device and method of monitoring and metering instrument
CN108267652A (en) * 2016-12-30 2018-07-10 Ls 产电株式会社 The method for detecting the electrical Interference as caused by DC components
CN109946591A (en) * 2019-04-16 2019-06-28 江苏健雄电气安装工程有限公司 A kind of relay-protection tester automated detection system
CN110579666A (en) * 2019-10-14 2019-12-17 华自科技股份有限公司 automatic test system for transformer relay protection equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991209A (en) * 2015-06-19 2015-10-21 国网天津市电力公司 Optical digital relay protection testing instrument detection method
CN105510739A (en) * 2015-11-27 2016-04-20 国家电网公司 Intelligent protective relaying device detection system
CN106226718A (en) * 2016-07-12 2016-12-14 河南许继智能科技股份有限公司 A kind of batch testing Electric control or the device and method of monitoring and metering instrument
CN106226718B (en) * 2016-07-12 2019-03-15 许昌继电器研究所有限公司 A kind of device and method of batch testing Electric control or monitoring and metering instrument
CN108267652A (en) * 2016-12-30 2018-07-10 Ls 产电株式会社 The method for detecting the electrical Interference as caused by DC components
US10707671B2 (en) 2016-12-30 2020-07-07 Lsis Co., Ltd. Method of detecting electrical disturbance by DC component
CN109946591A (en) * 2019-04-16 2019-06-28 江苏健雄电气安装工程有限公司 A kind of relay-protection tester automated detection system
CN110579666A (en) * 2019-10-14 2019-12-17 华自科技股份有限公司 automatic test system for transformer relay protection equipment

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