CN104236895A - Mechanical characteristic detection circuit of high-voltage circuit breaker - Google Patents
Mechanical characteristic detection circuit of high-voltage circuit breaker Download PDFInfo
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- CN104236895A CN104236895A CN201410551079.7A CN201410551079A CN104236895A CN 104236895 A CN104236895 A CN 104236895A CN 201410551079 A CN201410551079 A CN 201410551079A CN 104236895 A CN104236895 A CN 104236895A
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Abstract
The invention relates to a mechanical characteristic detection circuit of a high-voltage circuit breaker and aims at solving the problem of lack of a reliable detection method for the existing circuit breakers. The mechanical characteristic detection circuit of the high-voltage circuit breaker comprises a control display panel, a central data processing circuit, a drive circuit, a power circuit and a voltage/current sampling circuit; the central data processing circuit is connected with the drive circuit and the voltage/current sampling circuit, respectively; the power circuit is connected with the drive circuit and the voltage/current sampling circuit, respectively; the output end of the power circuit is connected with a voltage transformer. The mechanical characteristic detection circuit of the high-voltage circuit breaker is characterized in that a DSP control module and a CPLD control module are combined to form a control system which is simple in hardware circuit, safe and reliable in output trigger pulse and high in real-time control accuracy, and the device has relatively high stability and reliability, besides, a high-performance floating-point type digital signal processing chip is adopted to realize control on the device and the speed and accuracy of control are greatly improved to a large extent, and consequently, the whole control system has excellent regulation performance and reliability.
Description
Technical field
The present invention relates to circuit breaker failure diagnostic device, be specially a kind of mechanical characteristic of high-voltage circuit breaker testing circuit.
Background technology
Mechanical property on-line checkingi is the important content of primary cut-out state monitoring, and for detecting, identifying, the mechanical property of isolating switch has important meaning.Intrinsic point of (conjunction) lock time, speed, three-phase action consistency, be that can primary cut-out the important parameter of reliably working.Because the actuation time of primary cut-out is short, during action, vibration is large, early stage pick-up unit limit due to the level of Sampling techniques and sensor technology, for the detection of these transient parameters, especially lacks believable detection means to the detection of " initial trigger " action; Along with the development of modern industrial technology, current novel breaker is opened apart from little, speed fast, harsher to the requirement of High-voltage Circuit Breaker Mechanical Characteristic Tester.Therefore, market is in the urgent need to a kind of novel high-voltage circuit-breaker test macro with advanced test philosophy, execute-in-place convenience, reliable measuring data.
Economically upper consideration, power department, while improving constantly the quality of power supply, also needs the operation and maintenance cost reducing electric system simultaneously.Therefore the theory of " reliability maintenance " is gradually introduced power department.The research of this project provides a kind of brand-new isolating switch testing tool to power department, and this can be avoided the periodic maintenance mode of traditional costliness, obtains most economical maintenance cost.
Summary of the invention
The present invention lacks the problem of believable detection means in order to solve existing isolating switch, provide a kind of mechanical characteristic of high-voltage circuit breaker testing circuit.
The present invention adopts following technical scheme to realize: mechanical characteristic of high-voltage circuit breaker testing circuit, comprise and control display panel, central data treatment circuit, driving circuit, power circuit and electric current and voltage sample circuit, described control display panel is connected with central data treatment circuit, central data treatment circuit is connected with electric current and voltage sample circuit with driving circuit respectively, power circuit is connected with electric current and voltage sample circuit with driving circuit respectively, and the output terminal of described power circuit is connected with the secondary terminals of voltage transformer (VT);
Described power circuit comprises: rectifier bridge, electric capacity of voltage regulation, IGBT inverter and filtering circuit, and filtering circuit comprises filter inductance and filter capacitor; The ac input end of described rectifier bridge connects 220V AC power, the DC output end of rectifier bridge is also connected with the input end of IGBT inverter after connecing electric capacity of voltage regulation, be connected with one end of filter capacitor after an output terminal serial connection filter inductance of IGBT inverter, another output terminal of IGBT inverter is connected with the other end of filter capacitor, and the two ends of filter capacitor and the output terminal of power circuit are connected with the secondary terminals of voltage transformer (VT); Rectifier bridge adopts two by four diodes and two string modes connect, two brachium pontis middle pin access 220V alternating currents;
Described IGBT inverter is responsible for employing two by four IGBT containing fly-wheel diode and two string modes connect, and its one end is connected to the positive terminal of electric capacity of voltage regulation, and the other end is connected to the negative phase end of electric capacity of voltage regulation; Described filtering circuit is made up of filter inductance and filter capacitor, and its input end is connected with the mid point of two brachium pontis middle pins of IGBT inverter;
Described electric current and voltage sample circuit comprises two voltage hall sensors and a current Hall sensor; Described first voltage hall sensor is attempted by the two ends of electric capacity of voltage regulation, described second voltage hall sensor is attempted by the two ends of filter capacitor, described current Hall sensor is serially connected on the line between filter capacitor and voltage transformer (VT), above-mentioned voltage hall sensor is all connected with central data treatment circuit with the signal output part of current Hall sensor, and the electric current and voltage value of the main circuit of collection is sent to central data treatment circuit;
Described central data treatment circuit comprises: DSP control module, CPLD control module, crystal oscillating circuit module, electric current and voltage sampling conditioning circuit module, open into/output module and power module, described DSP control module respectively with above-mentioned CPLD control module, crystal oscillating circuit module, electric current and voltage sampling conditioning circuit module with open into/output module to be connected, described DSP control module and CPLD control module are in being bi-directionally connected, the described output terminal of crystal oscillating circuit module is connected with the input pin of DSP control module, described electric current and voltage sampling conditioning circuit module is connected with the A/D pin of DSP control module, described open into/output module to be made up of one piece of sister's circuit of central data treatment circuit, and with central data treatment circuit in being bi-directionally connected, described power module is that whole central data treatment circuit is powered.
During use, voltage hall sensor and current Hall sensor are located on the circuit of primary cut-out, for obtaining the real time data of primary cut-out; Electric capacity of voltage regulation is connected between rectifier bridge and IGBT inverter, pulsating dc voltage is become galvanic current pressure; Voltage hall sensor is all connected with central data treatment circuit with the signal output part of current Hall sensor, and the electric current and voltage value of the main circuit of collection is sent to central data treatment circuit.The output terminal of crystal oscillating circuit module is connected with the input pin of DSP control module, for DSP control module provides stable crystal oscillator frequency.The numerical value of the value that central data treatment circuit inputs according to user and the collection of electric current and voltage sample circuit carries out COMPREHENSIVE CALCULATING, draw corresponding Sine Modulated waveform, calculated by DSP control module and generate corresponding control signal, be transferred to CPLD control module to process, control signal is converted into the four tunnels gating pulse corresponding with IGBT inverter by CPLD control module, four tunnel gating pulse are sent to driving circuit by CPLD control module, after driving circuit carries out power amplification to gating pulse, four IGBT components and parts of access IGBT inverter, by the work of driving pulse control inverter, the DC voltage of electric capacity of voltage regulation is become variable alternating voltage, the alternating voltage of stable output after circuit filtering higher hamonic wave after filtering again.
Beneficial effect of the present invention is as follows: the present invention adopts DSP control module to add CPLD control module forming control system, and hardware circuit is simple, output trigger pulse is safe and reliable, precision of real time control is high, and device has higher stability and reliability; The present invention utilizes the control of high performance float-point type digital signal processing chip implement device, improves speed and the precision of control to a great extent, makes whole control system have good adjusting function and reliability.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention;
Fig. 2 is central data treatment circuit structural representation of the present invention.
In figure: 1-controls display panel, 2-central data treatment circuit, 3-driving circuit, 4-voltage transformer (VT), 5-rectifier bridge, 6-IGBT inverter, 7-first voltage hall sensor, 8-second voltage hall sensor, 9-current Hall sensor, 10-DSP control module, 11-CPLD control module, 12-crystal oscillating circuit module, 13-electric current and voltage sampling conditioning circuit module, 14-open into/output module, 15-power module, 16-filter inductance, 17-electric capacity of voltage regulation, 18-filter capacitor.
Embodiment
Mechanical characteristic of high-voltage circuit breaker testing circuit, mechanical characteristic of high-voltage circuit breaker testing circuit, comprise and control display panel 1, central data treatment circuit 2, driving circuit 3, power circuit and electric current and voltage sample circuit, described control display panel 1 is connected with central data treatment circuit 2, central data treatment circuit 2 is connected with electric current and voltage sample circuit with driving circuit 3 respectively, power circuit is connected with electric current and voltage sample circuit with driving circuit 3 respectively, and the output terminal of described power circuit is connected with the secondary terminals of voltage transformer (VT) 4;
Described power circuit comprises: rectifier bridge 5, electric capacity of voltage regulation 17, IGBT inverter 6 and filtering circuit, and filtering circuit comprises filter inductance 16 and filter capacitor 18; The ac input end of described rectifier bridge 5 connects 220V AC power, the DC output end of rectifier bridge 5 is also connected with the input end of IGBT inverter 6 after connecing electric capacity of voltage regulation 17, be connected with one end of filter capacitor 18 after an output terminal serial connection filter inductance 16 of IGBT inverter 6, another output terminal of IGBT inverter 6 is connected with the other end of filter capacitor 18, and the two ends of filter capacitor 18 and the output terminal of power circuit are connected with the secondary terminals of voltage transformer (VT) 4; Rectifier bridge 5 adopts two by four diodes and two string modes connect, and two brachium pontis middle pin access 220V alternating currents, for being converted into pulsating dc voltage by 220V alternating current by rectifier bridge;
Described IGBT inverter 6 is responsible for employing two by four IGBT containing fly-wheel diode and two string modes connect, its one end is connected to the positive terminal of electric capacity of voltage regulation 17, the other end is connected to the negative phase end of electric capacity of voltage regulation 17, and DC voltage is converted into variable pulsation alternating voltage by IGBT inverter 6; Described filtering circuit is made up of filter inductance 16 and filter capacitor 18, and its input end is connected with the mid point of two brachium pontis middle pins of IGBT inverter 6;
Described electric current and voltage sample circuit comprises two voltage hall sensors and a current Hall sensor; Described first voltage hall sensor 7 is attempted by the two ends of electric capacity of voltage regulation 17, described second voltage hall sensor 8 is attempted by the two ends of filter capacitor 18, described current Hall sensor 9 is serially connected on the line between filter capacitor 18 and voltage transformer (VT) 4, above-mentioned voltage hall sensor is all connected with central data treatment circuit 2 with the signal output part of current Hall sensor, and the electric current and voltage value of the main circuit of collection is sent to central data treatment circuit 2;
Described central data treatment circuit 2 comprises: DSP control module 10, CPLD control module 11, crystal oscillating circuit module 12, electric current and voltage sampling conditioning circuit module 13, open into/output module 14 and power module 15, described DSP control module 10 respectively with above-mentioned CPLD control module 11, crystal oscillating circuit module 12, electric current and voltage sampling conditioning circuit module 13 with open into/output module 14 to be connected, described DSP control module 10 and CPLD control module 11 are in being bi-directionally connected, the output terminal of described crystal oscillating circuit module 12 is connected with the input pin of DSP control module 10, described electric current and voltage sampling conditioning circuit module 13 is connected with the A/D pin of DSP control module 10, described open into/output module 14 to be made up of one piece of sister's circuit of central data treatment circuit 2, and with central data treatment circuit 2 in being bi-directionally connected, described power module 15 is powered for whole central data treatment circuit 2.
Claims (1)
1. a mechanical characteristic of high-voltage circuit breaker testing circuit, it is characterized in that: comprise and control display panel (1), central data treatment circuit (2), driving circuit (3), power circuit and electric current and voltage sample circuit, described control display panel (1) is connected with central data treatment circuit (2), central data treatment circuit (2) is connected with electric current and voltage sample circuit with driving circuit (3) respectively, power circuit is connected with electric current and voltage sample circuit with driving circuit (3) respectively, the output terminal of described power circuit is connected with the secondary terminals of voltage transformer (VT) (4),
Described power circuit comprises: rectifier bridge (5), electric capacity of voltage regulation (17), IGBT inverter (6) and filtering circuit, and filtering circuit comprises filter inductance (16) and filter capacitor (18); The ac input end of described rectifier bridge (5) connects 220V AC power, the DC output end of rectifier bridge (5) also connects electric capacity of voltage regulation (17) and is connected with the input end of IGBT inverter (6) afterwards, output terminal serial connection filter inductance (16) of IGBT inverter (6) is connected with one end of filter capacitor (18) afterwards, another output terminal of IGBT inverter (6) is connected with the other end of filter capacitor (18), and the two ends of filter capacitor (18) and the output terminal of power circuit are connected with the secondary terminals of voltage transformer (VT) (4); Rectifier bridge (5) adopts two by four diodes and two string modes connect, two brachium pontis middle pin access 220V alternating currents;
Described IGBT inverter (6) is responsible for employing two by four IGBT containing fly-wheel diode and two string modes connect, and its one end is connected to the positive terminal of electric capacity of voltage regulation (17), and the other end is connected to the negative phase end of electric capacity of voltage regulation (17); Described filtering circuit is made up of filter inductance (16) and filter capacitor (18), and its input end is connected with the mid point of two brachium pontis middle pins of IGBT inverter (6);
Described electric current and voltage sample circuit comprises two voltage hall sensors and a current Hall sensor; Described first voltage hall sensor (7) is attempted by the two ends of electric capacity of voltage regulation (17), described second voltage hall sensor (8) is attempted by the two ends of filter capacitor (18), described current Hall sensor (9) is serially connected on the line between filter capacitor (18) and voltage transformer (VT) (4), above-mentioned voltage hall sensor is all connected with central data treatment circuit (2) with the signal output part of current Hall sensor, and the electric current and voltage value of the main circuit of collection is sent to central data treatment circuit (2);
Described central data treatment circuit (2) comprising: DSP control module (10), CPLD control module (11), crystal oscillating circuit module (12), electric current and voltage sampling conditioning circuit module (13), open into/output module (14) and power module (15), described DSP control module (10) respectively with above-mentioned CPLD control module (11), crystal oscillating circuit module (12), electric current and voltage sampling conditioning circuit module (13) with open into/output module (14) to be connected, described DSP control module (10) and CPLD control module (11) are in being bi-directionally connected, the output terminal of described crystal oscillating circuit module (12) is connected with the input pin of DSP control module (10), described electric current and voltage sampling conditioning circuit module (13) is connected with the A/D pin of DSP control module (10), described open into/output module (14) to be made up of one piece of sister's circuit of central data treatment circuit (2), and with central data treatment circuit (2) in being bi-directionally connected, described power module (15) is powered for whole central data treatment circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551079.7A CN104236895A (en) | 2014-10-17 | 2014-10-17 | Mechanical characteristic detection circuit of high-voltage circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410551079.7A CN104236895A (en) | 2014-10-17 | 2014-10-17 | Mechanical characteristic detection circuit of high-voltage circuit breaker |
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| CN104236895A true CN104236895A (en) | 2014-12-24 |
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| CN201410551079.7A Pending CN104236895A (en) | 2014-10-17 | 2014-10-17 | Mechanical characteristic detection circuit of high-voltage circuit breaker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105094019A (en) * | 2015-08-31 | 2015-11-25 | 广州供电局有限公司 | High-voltage power electronic control device and control method thereof |
| CN105510814A (en) * | 2015-11-26 | 2016-04-20 | 国家电网公司 | 10 KV high-voltage distribution device vacuum circuit breaker permanent magnet mechanism current detection system |
| CN106443428A (en) * | 2016-08-31 | 2017-02-22 | 济南朗宁电力科技有限公司 | DL handcart type circuit breaker characteristics tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105094019A (en) * | 2015-08-31 | 2015-11-25 | 广州供电局有限公司 | High-voltage power electronic control device and control method thereof |
| CN105510814A (en) * | 2015-11-26 | 2016-04-20 | 国家电网公司 | 10 KV high-voltage distribution device vacuum circuit breaker permanent magnet mechanism current detection system |
| CN106443428A (en) * | 2016-08-31 | 2017-02-22 | 济南朗宁电力科技有限公司 | DL handcart type circuit breaker characteristics tester |
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Application publication date: 20141224 |