CN201145733Y - DC switch experimental device - Google Patents
DC switch experimental device Download PDFInfo
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- CN201145733Y CN201145733Y CNU2007200995392U CN200720099539U CN201145733Y CN 201145733 Y CN201145733 Y CN 201145733Y CN U2007200995392 U CNU2007200995392 U CN U2007200995392U CN 200720099539 U CN200720099539 U CN 200720099539U CN 201145733 Y CN201145733 Y CN 201145733Y
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Abstract
The utility model discloses a direct current switch test device, which is characterized in that the direct current switch test device consists of two parts of a control unit and an output unit, wherein the control unit comprises a controller module and a high voltage rectifying module as well as a high voltage inverting module. The output unit comprises a rectifying circuit module and a current detection module as well as a control protection module; the direct current switch test device has the advantages of: firstly, intelligentized operation, displaying output current on a displayer by means of a graph, conveniently calculating and displaying action time of the direct current switch, and being capable of storing and printing measured results; secondly, improving efficiency, reducing volume and weight; having a plurality of output waveform selections; high output signal accuracy, and only having 2 percent of composite errors in the process of outputting based on the pre-set waveform parameters; thirdly, high accuracy of measurement and timing; and fourthly, complete protective circuit; modularization design, convenient maintenance and use, and is capable of increasing functions based on requirement of the subscriber.
Description
(1) technical field:
The utility model relates to a kind of test unit, particularly a kind of dc switch test unit.
(2) background technology:
According to the planning data that National Development and Reform Committee and light rail research centre provide, the year two thousand twenty China will have and surpass 550 kilometers subway line, and the year two thousand fifty comprises that light rail and subway line will reach 2000 kilometers.Dc switch is the major equipment of DC traction net short-circuit protection in the urban track traffic, needs routine test to guarantee the safety of light rail tractive power supply system.Present domestic subway lacks relevant high-current test equipment with the import dc switch that the light rail tractive power supply system is selected for use, can't detect.The external big electrical current generation system investment of introducing is big, and bulky, mechanical structure is manual operation mode, the plant maintenance difficulty, and domestic do not have a Related product.The dc switch detection system is the Performance Test System of dc switch, and its difficult point is to produce controlled big electric current, accurately tests short-circuit protection dc switch dynamic operational behaviour parameter to judge whether dc switch moves accurately and reliably.
(3) utility model content:
The purpose of this utility model is to provide a kind of dc switch test unit, and it can overcome the deficiencies in the prior art, is a kind of easy to operate, simple in structure, simple dc switch test unit of plant maintenance.
The technical solution of the utility model: a kind of dc switch test unit is characterized in that it is made up of control module and output unit two parts; Wherein, said control module comprises controller module and high-voltage rectifying and inversion module, and is two-way connection between controller module and high-voltage rectifying and the inversion module; The input end of said controller module and high-voltage rectifying and inversion module is connected with external power source; Said output unit comprises rectification circuit module and current detecting and control protection module, and the high-voltage rectifying in the input end of rectification circuit and the control module and the output terminal of inversion module are connected, and its output terminal is connected with the input end of current detecting and control protection module; The input end of said current detecting and control protection module is connected with the output terminal of rectification circuit module, and its output terminal is connected with the input end of high-voltage rectifying and inversion module and rectification circuit respectively.
Above-mentioned said controller module is made up of embedded industrial computer, dsp controller and I/O controller; Said embedded industrial computer, dsp controller and I/O controller be each other for two-way the connection, and also be two-way the connection between dsp controller and I/O controller and high-voltage rectifying and the inversion module.
Above-mentioned said high-voltage rectifying and inversion module by three-phase bridge rectification filtering and pwm control circuit and at least the unidirectional bridge inverter main circuit of three-phase form; The output terminal of the input end of said three-phase bridge rectification filtering and pwm control circuit and current detecting and control protection module is connected, and its output terminal is connected with the unidirectional bridge inverter main circuit in each road, is two-way between while and dsp controller and the I/O controller and is connected.
Above-mentioned said rectification circuit module is made up of high electric reduction voltage loop of high frequency and lower pressure rectifier output loop; The input end of the high electric reduction voltage loop of said high frequency is connected with the output terminal of single-phase bridge inverter circuit, and its output terminal is connected with the input end of lower pressure rectifier output loop; Said lower pressure rectifier output loop is two-way with current detecting and control protection module and is connected.
Contain at least one high frequency voltage descending transformer in the high electric reduction voltage loop of above-mentioned said high frequency, said lower pressure rectifier output loop contains at least one single-phase full-wave rectifer circuit; Wherein, the input end of said high frequency voltage descending transformer is connected with the output terminal of single-phase inversion group output circuit, and its output terminal is connected with the input end of single-phase full-wave rectifer circuit; The output terminal output D.C. high-current of said single-phase full-wave rectifer circuit; And the quantity of said high frequency voltage descending transformer is identical with the quantity of single-phase full-wave rectifer circuit.
Above-mentioned said current detecting and control protection module are to be made of output current detection loop and current protection loop; The output terminal that said output current detects the input end connection output unit in loop detects the size of current of exporting, and its output terminal is connected with the input end in current protection loop; The output terminal of said current protection is connected with the input end of bridge rectifier filtering and pwm control circuit.
Output current in above-mentioned said current detecting and the control protection module detects the loop and is made up of simulating signal isolation and filtering circuit, switch controlling signal isolation processing circuit, at least one current detecting and treatment circuit, at least three single-phase bridge inverter circuit Drive and Control Circuit and at least one current regulation control circuit; Current protection loop in said current detecting and the control protection module is made up of output overcurrent holding circuit, out-of-date holding circuit circuit and high voltage direct current current foldback circuit circuit; Wherein, be two-way connection between said simulating signal isolation and filtering circuit and switch controlling signal isolation processing circuit and the I/O controller; The input end of said current regulation control circuit is connected with the output terminal of current detecting and treatment circuit and single-phase bridge inverter circuit Drive and Control Circuit respectively, and its output terminal is connected with the input end of single-phase bridge inverter circuit Drive and Control Circuit; The input end of said single-phase bridge inverter circuit Drive and Control Circuit is connected with the output terminal of output overcurrent holding circuit and out-of-date holding circuit, and its output terminal is connected with the input end of output overcurrent holding circuit, out-of-date holding circuit; The input of said output overcurrent holding circuit, out-of-date holding circuit, output terminal are connected with output, the input end of high voltage direct current current foldback circuit unit respectively.
Method of work of the present utility model is: 1. the controller module in the control module is passed to the DSP processing unit with electric signal and control signal amount, by DSP the data that receive is compared, calculates, and send the I/O control signal by the I/O control module; 2. three-phase bridge rectification filtering and pwm control circuit carry out rectification, filtering to three-phase voltage after receiving control signal, make contactor connect circuit, and inverter circuit will carry out high-frequency inversion to it, and have pwm circuit to control the output of its signal; 3. the voltage after the output carries out the high electric step-down up-flow processing of high frequency in the high electric reduction voltage loop of high frequency; 4. the signal behind the up-flow carries out unidirectional full-wave electric current rectification, multiple signals output in parallel; 5. current sensing means detects, compares output current, and the result is informed the current protection loop, and holding circuit feeds back to control protection electric circuit after the current detecting result is handled, and carries out the corresponding protection action.
Superiority of the present utility model is: 1, operative intelligenceization, output current show with graphics mode on display, can conveniently calculate, show the actuation time of dc switch, and can store, print measurement result; 2, adopt the high-speed high-power power electronic devices, improved efficient, reduced volume and weight; 3, possessing multiple output waveform selects; 4, output signal accuracy height, by predefined waveform parameter output, composition error has only 2%; 5, measurement and accuracy of timekeeping height, output current, make and break contact operating state are by measuring the loop measurement and showing on display that with graphics mode it is 2% that accurate calculating has related parameter, current measurement precision, and the time measurement precision is 1mS; 6, holding circuit is perfect; Modular design maintains easily and uses, can be according to user's increase in demand function.
(4) description of drawings:
Fig. 1 is the general structure block diagram of the related a kind of dc switch test unit of the utility model.
Fig. 2 is the structured flowchart of the high electric reduction voltage loop of the related a kind of dc switch test unit medium-high frequency of the utility model.
Fig. 3 be in the related a kind of dc switch test unit of the utility model current detecting and control protection module structured flowchart.
(5) embodiment:
A kind of dc switch test unit (see figure 1) is characterized in that it is made up of control module and output unit two parts; Wherein, said control module comprises controller module and high-voltage rectifying and inversion module, and is two-way connection between controller module and high-voltage rectifying and the inversion module; The input end of said controller module and high-voltage rectifying and inversion module is connected with external power source; Said output unit comprises rectification circuit module and current detecting and control protection module, and the high-voltage rectifying in the input end of rectification circuit and the control module and the output terminal of inversion module are connected, and its output terminal is connected with the input end of current detecting and control protection module; The input end of said current detecting and control protection module is connected with the output terminal of rectification circuit module, and its output terminal is connected with the input end of high-voltage rectifying and inversion module and rectification circuit respectively.
Above-mentioned said controller module (see figure 1) is made up of embedded industrial computer, dsp controller and I/O controller; Said embedded industrial computer, dsp controller and I/O controller be each other for two-way the connection, and also be two-way the connection between dsp controller and I/O controller and high-voltage rectifying and the inversion module.
Above-mentioned said high-voltage rectifying and inversion module (see figure 1) by three-phase bridge rectification filtering and pwm control circuit and at least the unidirectional bridge inverter main circuit of three-phase form; The output terminal of the input end of said three-phase bridge rectification filtering and pwm control circuit and current detecting and control protection module is connected, and its output terminal is connected with the unidirectional bridge inverter main circuit in each road, is two-way between while and dsp controller and the I/O controller and is connected.
Above-mentioned said rectification circuit module (see figure 1) is made up of high electric reduction voltage loop of high frequency and lower pressure rectifier output loop; The input end of the high electric reduction voltage loop of said high frequency is connected with the output terminal of single-phase bridge inverter circuit, and its output terminal is connected with the input end of lower pressure rectifier output loop; Said lower pressure rectifier output loop is two-way with current detecting and control protection module and is connected.
Contain at least one high frequency voltage descending transformer in the high electric reduction voltage loop of above-mentioned said high frequency, said lower pressure rectifier output loop contains at least one single-phase full-wave rectifer circuit; Wherein, the input end of said high frequency voltage descending transformer is connected with the output terminal of single-phase inversion group output circuit, and its output terminal is connected with the input end of single-phase full-wave rectifer circuit; The output terminal output D.C. high-current of said single-phase full-wave rectifer circuit; And the quantity of said high frequency voltage descending transformer is identical with the quantity of single-phase full-wave rectifer circuit.(see figure 2)
Above-mentioned said current detecting and control protection module (see figure 1) are to be made of output current detection loop and current protection loop; The output terminal that said output current detects the input end connection output unit in loop detects the size of current of exporting, and its output terminal is connected with the input end in current protection loop; The output terminal of said current protection is connected with the input end of bridge rectifier filtering and pwm control circuit.
Output current in above-mentioned said current detecting and the control protection module (see figure 3) detects the loop and is made up of simulating signal isolation and filtering circuit, switch controlling signal isolation processing circuit, at least one current detecting and treatment circuit, at least three single-phase bridge inverter circuit Drive and Control Circuit and at least one current regulation control circuit; Current protection loop in said current detecting and the control protection module is made up of output overcurrent holding circuit, out-of-date holding circuit circuit and high voltage direct current current foldback circuit circuit; Wherein, be two-way connection between said simulating signal isolation and filtering circuit and switch controlling signal isolation processing circuit and the I/O controller; The input end of said current regulation control circuit is connected with the output terminal of current detecting and treatment circuit and single-phase bridge inverter circuit Drive and Control Circuit respectively, and its output terminal is connected with the input end of single-phase bridge inverter circuit Drive and Control Circuit; The input end of said single-phase bridge inverter circuit Drive and Control Circuit is connected with the output terminal of output overcurrent holding circuit and out-of-date holding circuit, and its output terminal is connected with the input end of output overcurrent holding circuit, out-of-date holding circuit; The input of said output overcurrent holding circuit, out-of-date holding circuit, output terminal are connected with output, the input end of high voltage direct current current foldback circuit unit respectively.
Claims (7)
1, a kind of dc switch test unit is characterized in that it is made up of control module and output unit two parts; Wherein, said control module comprises controller module and high-voltage rectifying and inversion module, and is two-way connection between controller module and high-voltage rectifying and the inversion module; The input end of said controller module and high-voltage rectifying and inversion module is connected with external power source; Said output unit comprises rectification circuit module and current detecting and control protection module, and the high-voltage rectifying in the input end of rectification circuit and the control module and the output terminal of inversion module are connected, and its output terminal is connected with the input end of current detecting and control protection module; The input end of said current detecting and control protection module is connected with the output terminal of rectification circuit module, and its output terminal is connected with the input end of high-voltage rectifying and inversion module and rectification circuit respectively.
2, a kind of dc switch test unit according to claim 1 is characterized in that said controller module is made up of embedded industrial computer, dsp controller and I/O controller; Said embedded industrial computer, dsp controller and I/O controller be each other for two-way the connection, and also be two-way the connection between dsp controller and I/O controller and high-voltage rectifying and the inversion module.
3, a kind of dc switch test unit according to claim 1, it is characterized in that said high-voltage rectifying and inversion module by three-phase bridge rectification filtering and pwm control circuit and at least the unidirectional bridge inverter main circuit of three-phase form; The output terminal of the input end of said three-phase bridge rectification filtering and pwm control circuit and current detecting and control protection module is connected, and its output terminal is connected with the unidirectional bridge inverter main circuit in each road, is two-way between while and dsp controller and the I/O controller and is connected.
4, a kind of dc switch test unit according to claim 1 is characterized in that said rectification circuit module is made up of high electric reduction voltage loop of high frequency and lower pressure rectifier output loop; The input end of the high electric reduction voltage loop of said high frequency is connected with the output terminal of single-phase bridge inverter circuit, and its output terminal is connected with the input end of lower pressure rectifier output loop; Said lower pressure rectifier output loop is two-way with current detecting and control protection module and is connected.
5, a kind of dc switch test unit according to claim 4 is characterized in that containing at least one high frequency voltage descending transformer in the high electric reduction voltage loop of said high frequency, and said lower pressure rectifier output loop contains at least one single-phase full-wave rectifer circuit; Wherein, the input end of said high frequency voltage descending transformer is connected with the output terminal of single-phase inversion group output circuit, and its output terminal is connected with the input end of single-phase full-wave rectifer circuit; The output terminal output D.C. high-current of said single-phase full-wave rectifer circuit; And the quantity of said high frequency voltage descending transformer is identical with the quantity of single-phase full-wave rectifer circuit.
6, a kind of dc switch test unit according to claim 1 is characterized in that said current detecting and control protection module are to be made of output current detection loop and current protection loop; The output terminal that said output current detects the input end connection output unit in loop detects the size of current of exporting, and its output terminal is connected with the input end in current protection loop; The output terminal of said current protection is connected with the input end of bridge rectifier filtering and pwm control circuit.
7, a kind of dc switch test unit according to claim 6 is characterized in that the output current detection loop in said current detecting and the control protection module is made up of simulating signal isolation and filtering circuit, switch controlling signal isolation processing circuit, at least one current detecting and treatment circuit, three single-phase bridge inverter circuit Drive and Control Circuit and at least one current regulation control circuit at least; Current protection loop in said current detecting and the control protection module is made up of output overcurrent holding circuit, out-of-date holding circuit circuit and high voltage direct current current foldback circuit circuit; Wherein, be two-way connection between said simulating signal isolation and filtering circuit and switch controlling signal isolation processing circuit and the I/O controller; The input end of said current regulation control circuit is connected with the output terminal of current detecting and treatment circuit and single-phase bridge inverter circuit Drive and Control Circuit respectively, and its output terminal is connected with the input end of single-phase bridge inverter circuit Drive and Control Circuit; The input end of said single-phase bridge inverter circuit Drive and Control Circuit is connected with the output terminal of output overcurrent holding circuit and out-of-date holding circuit, and its output terminal is connected with the input end of output overcurrent holding circuit, out-of-date holding circuit; The input of said output overcurrent holding circuit, out-of-date holding circuit, output terminal are connected with output, the input end of high voltage direct current current foldback circuit unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200995392U CN201145733Y (en) | 2007-12-28 | 2007-12-28 | DC switch experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200995392U CN201145733Y (en) | 2007-12-28 | 2007-12-28 | DC switch experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145733Y true CN201145733Y (en) | 2008-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200995392U Expired - Lifetime CN201145733Y (en) | 2007-12-28 | 2007-12-28 | DC switch experimental device |
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| Country | Link |
|---|---|
| CN (1) | CN201145733Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809116A (en) * | 2014-02-28 | 2014-05-21 | 国家电网公司 | Short circuit performance testing system and method |
-
2007
- 2007-12-28 CN CNU2007200995392U patent/CN201145733Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809116A (en) * | 2014-02-28 | 2014-05-21 | 国家电网公司 | Short circuit performance testing system and method |
| CN103809116B (en) * | 2014-02-28 | 2018-01-19 | 国家电网公司 | A kind of short-circuit capability test system and its method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJING KEYVIA ELECTRIC CO., LTD. Free format text: FORMER NAME: KEYVIA ELECTRIC COM-PLANT CO.,LTD OF TIANJIN HI-TECH INDUSTRY PARK |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 300384 Huayuan Industrial Zone Tianjin City Road No. 8 Kaifa building A310 Patentee after: Tianjin Keyvia Electric Co., Ltd. Address before: 300384 Huayuan Industrial Zone Tianjin City Road No. 8 Kaifa building A310 Patentee before: Tianjin New Technology Industry Park Kaifa Electric Complete Equipment Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081105 |