CN109507576B - Detection apparatus for be used for mechanical type direct current breaker performance of opening and shutting - Google Patents
Detection apparatus for be used for mechanical type direct current breaker performance of opening and shutting Download PDFInfo
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- CN109507576B CN109507576B CN201811385361.7A CN201811385361A CN109507576B CN 109507576 B CN109507576 B CN 109507576B CN 201811385361 A CN201811385361 A CN 201811385361A CN 109507576 B CN109507576 B CN 109507576B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention relates to the technical field of circuit breaker detection, and discloses a detection device for the breaking performance of a mechanical direct current circuit breaker, which is applied to a reclosing state and comprises a first/second power supply loop, wherein the input end of the first/second power supply loop is connected with an alternating current power supply, the output end of the first/second power supply loop is connected with the direct current circuit breaker to be detected, the direct current circuit breaker to be detected is connected with a secondary control unit through a main controller, and the secondary control unit is respectively connected with a first alternating current circuit breaker of the first power supply loop and a second alternating current circuit breaker of the second power supply loop and is used for driving and controlling the opening and closing of the first/second alternating current circuit; the first alternating current circuit breaker is connected with the main controller through the fault triggering module, the fault triggering module is used for driving the first alternating current circuit breaker to be switched on to generate a fault signal, the fault signal is fed back to the main controller, and the main controller sends switching-on and switching-off signals of the first/second alternating current circuit breakers to the auxiliary control unit according to the set time interval to control switching-on and switching-off of the direct current circuit breaker to be detected.
Description
Technical Field
The invention relates to the technical field of circuit breaker detection, in particular to a detection device for the on-off performance of a mechanical direct current circuit breaker.
Background
In the application of the power grid technology at the present stage, along with the research and development of a large number of direct current related power generation devices and the establishment of a flexible direct current transmission project, the importance of a direct current breaker in the power grid technology is higher and higher. The method is characterized in that type tests are required to verify aiming at development and development of direct-current breaker equipment, the direct-current breaker equipment comprises a breaking technology, a reclosing test in the breaking technology test has high requirements on a power supply loop generating simulated fault current, firstly, the time interval for supplying power for one-minute and two-minute breaking is extremely short, and generally, after one-minute breaking is completed, the broken power supply needs to be quickly supplied again after the interval is dozens of milliseconds to hundreds of milliseconds; secondly, the alternating current power supply of secondary brake-separating needs energy equivalent to a direct current power system, at present, the breaking research institutions in China do not have high-voltage-level direct current power supplies, the direct current power supplies are replaced by the alternating current power supplies, the alternating current power supplies are mostly provided by an alternating current generator or a generator, the cost is high, the adjustability is poor, a power circuit is designed by utilizing the energy equivalent, and the voltage at two ends of a breaker fracture and the total current of line faults need to be kept consistent with the working condition of an actual system by the two brake-separating power supplies required by reclosing. In addition, in the domestic on-off detection institute, there is no perfect mechanical dc breaker reclosing on-off verification loop, so in the field of dc breaker on-off verification, a set of power supply loop which has low-cost construction, can be widely and conveniently applied to each test station (room) and meets the capability of reclosing test is urgently needed to detect the on-off performance of the breaker.
Disclosure of Invention
The invention provides a detection device for the on-off performance of a mechanical direct current breaker, and solves the problems that the existing detection device cannot provide a direct current power supply which accords with the actual working condition for detecting the on-off performance and the like.
The invention can be realized by the following technical scheme:
a detection device for the breaking performance of a mechanical direct current breaker is applied to a reclosing state and comprises a first power supply loop and a second power supply loop which are connected in parallel, wherein the input end of the first power supply loop and the output end of the second power supply loop are connected with an alternating current power supply, the output end of the first power supply loop and the output end of the second power supply loop are connected with the direct current breaker to be tested, and the first power supply loop and the second power supply loop are used for generating corresponding alternating current power supplies according to the magnitude of fault current to be simulated;
the first power supply loop comprises a first alternating current circuit breaker, the second loop comprises a second alternating current circuit breaker, the direct current circuit breaker to be detected is connected with a main controller, the main controller is connected with a secondary control unit, the secondary control unit is respectively connected with the first alternating current circuit breaker and the second alternating current circuit breaker, and the first alternating current circuit breaker is also connected with the main controller through a fault triggering module;
the fault trigger module is used for driving the first alternating current circuit breaker to be switched on, generating a fault signal and feeding the fault signal back to the main controller, the main controller receives the fault signal, sends switching-on and switching-off signals of the first alternating current circuit breaker and the second alternating current circuit breaker to the auxiliary control unit according to the set time interval, controls the switching-on and switching-off of the direct current circuit breaker to be detected, and the auxiliary control unit is used for driving and controlling the switching-on and switching-off actions of the first alternating current circuit breaker and the second alternating current circuit breaker.
Further, the auxiliary control unit comprises a signal conversion module connected with the main controller, the signal conversion module is connected with the auxiliary controller, the auxiliary controller is connected with the first alternating current circuit breaker through a first electronic switch and is connected with the second alternating current circuit breaker through a second electronic switch, the first electronic switch is arranged on a connecting circuit of the first alternating current circuit breaker and the power supply, the second electronic switch is arranged on a connecting circuit of the second alternating current circuit breaker and the power supply, the signal conversion module is used for converting optical signals sent by the main controller into electric signals, and the auxiliary controller controls the opening of the first alternating current circuit breaker through the first electronic switch and controls the closing of the second alternating current circuit breaker through the second electronic switch according to received opening and closing signals.
Furthermore, the fault triggering module comprises a high-voltage switch controller connected with the first alternating-current circuit breaker and the main controller, a closing button is arranged on the high-voltage switch controller, the closing button is manually pressed to drive the first alternating-current circuit breaker to close, the first power supply loop is connected into the main loop, a fault signal is generated, and the fault signal is fed back to the main controller.
Further, the starting signal is a pulse signal.
Further, the first power supply loop and the second power supply loop generate an alternating current power supply from the oscillation circuit through the LC.
Further, the first power supply loop comprises a first capacitor, the first capacitor is coupled with the first booster transformer for charging, and then is connected with the inductor through the first alternating current breaker; the second power supply loop comprises a second capacitor, the second capacitor is coupled with a second booster transformer for charging, and then the second capacitor is connected with the inductor through a second alternating current breaker.
A detection method based on the detection device for the opening performance of the mechanical direct current circuit breaker comprises the following steps:
the method comprises the steps that firstly, the sizes of a first capacitor of a first power supply loop, a second capacitor of a second power supply loop and an inductor are set according to the size of fault current to be simulated, and the first capacitor and the second capacitor are charged;
step two, manually pressing a closing button of the high-voltage switch controller to control the first alternating-current circuit breaker to close, connecting a first power supply loop into a main loop, and starting the whole device;
and step three, by controlling the time sequence of the cutting of the first power supply circuit from the main circuit, the access of the second power supply circuit to the main circuit and the switching-on and switching-off of the direct current circuit breaker to be detected, the detection of the switching performance of the direct current circuit breaker to be detected is completed by using the acquisition instrument.
Further, a voltage detection probe of the acquisition instrument is connected to two ends of a driving module of the direct current device to be detected, and a current detection probe is connected to the main loop; recording the first acquisition time and the second acquisition time of the voltage detection probe detected by the acquisition instrument, and the first zero-changing time of the current waveform transmitted to the acquisition instrument by the current detection probe; and calculating the time interval between the first zero-changing moment and the first acquisition moment and the time interval between the second zero-changing moment and the second acquisition moment, comparing the time intervals with the requirement of the direct current circuit breaker to be detected, and judging whether the requirement of the switching performance of the direct current circuit breaker is met.
Further, the time sequence is set as the opening of the direct current circuit breaker to be detected, the cutting of the first power supply loop from the main loop, the access of the second power supply loop to the main loop, the closing of the direct current circuit breaker to be detected, and the opening of the direct current circuit breaker to be detected, or the opening of the direct current circuit breaker to be detected, the cutting of the first power supply loop from the main loop, the closing of the direct current circuit breaker to be detected, the access of the second power supply loop to the main loop, and the opening of the direct current circuit breaker to be detected.
The beneficial technical effects of the invention are as follows:
1) the time interval between the primary on-off and the secondary off-on is short, the simulated fault current is produced through two independent power supply loops, the time for connecting the two independent power supply loops into a main loop can be completely set according to the actual working condition, the simulation effect is more vivid, the accuracy and the precision of the measurement result are improved, the regulation and the simulation of the magnitude of the fault current are realized by changing the magnitude of the first capacitor/the second capacitor and the inductor and the magnitude of the first boosting transformer/the second boosting transformer, the cost is low, the plastic modeling is strong, the application is wide and convenient, and the device is suitable for high-low voltage direct current circuit breakers.
2) The detection device can be used for filling the detection of the reclosing state of the direct-current circuit breaker in China, reducing the research and development cost of the breaking performance for circuit breaker manufacturers, scientific research units and the like, and conveniently building a test platform.
Drawings
FIG. 1 is a block diagram of the circuit connections of the present invention;
FIG. 2 is a schematic diagram of a control signal flow according to the present invention;
FIG. 3 is a schematic diagram of the connection of the first power circuit and the second power circuit according to the present invention;
FIG. 4 is a schematic diagram of sequential logic control of the main controller and the current variation of the corresponding main loop according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
The invention provides a detection device for the breaking performance of a mechanical direct current breaker, which is applied to a reclosing state, and comprises a first power supply loop and a second power supply loop which are connected in parallel as shown in figures 1 and 2, wherein the input end of the first power supply loop and the second power supply loop are connected with an alternating current power supply, the output end of the first power supply loop and the output end of the second power supply loop are connected with a direct current breaker to be tested, and the first power supply loop and the second power supply loop are used for generating corresponding alternating current power supplies according to the magnitude of fault current to be simulated; the first power supply loop comprises a first alternating current circuit breaker, the second loop comprises a second alternating current circuit breaker, the direct current circuit breaker to be detected is connected with the main controller, the main controller is connected with the auxiliary control unit, the auxiliary control unit is respectively connected with the first alternating current circuit breaker and the second alternating current circuit breaker, and the first alternating current circuit breaker is further connected with the main controller through the fault triggering module.
The fault trigger module is used for driving the first alternating current circuit breaker to be switched on to generate a fault signal, the fault signal is fed back to the main controller, the main controller receives the fault signal, switching-on and switching-off signals of the first alternating current circuit breaker and the second alternating current circuit breaker are sent to the auxiliary control unit according to the set time interval, switching-on and switching-off of the direct current circuit breaker to be detected are controlled, and the auxiliary control unit is used for driving and controlling switching-on and switching-off actions of the first alternating current circuit breaker and the second alternating current circuit breaker.
The auxiliary control unit comprises a signal conversion module connected with the main controller, the signal conversion module is connected with the auxiliary controller, the auxiliary controller is connected with the first alternating current circuit breaker through a first electronic switch and the second alternating current circuit breaker through a second electronic switch and is also connected with the energy supply module, the first electronic switch is arranged on a connection path of the first alternating current circuit breaker and the power supply, and the second electronic switch is arranged on a connection path of the second alternating current circuit breaker and the power supply. The energy supply module supplies power to the auxiliary control unit by converting 220V alternating current into 24V direct current. In order to enable the detection of the direct current circuit breaker to be more in line with the actual situation, the main controller of the invention is formed by transforming a main controller of a mechanical direct current circuit breaker, so the control signal sent by the main controller is an optical signal, and the control signals of other devices such as an alternating current circuit breaker and the like are electric signals, so the optical signal sent by the main controller is converted into the electric signal by a signal conversion module, the sub-controller controls the opening and closing of the first alternating current circuit breaker through a first electronic switch according to the received opening and closing signals, and controls the closing of the second alternating current circuit breaker through a second electronic switch.
The fault trigger module comprises a high-voltage switch controller which is connected with a first alternating current breaker and a main controller, the high-voltage switch controller adopts a common controller which can be sold in the market, can provide a working power supply of the alternating current breaker, can control the opening and closing of the alternating current breaker manually, and can detect a pulse signal of current change on a circuit after the alternating current breaker is connected into the circuit.
As shown in fig. 3, the first power supply loop and the second power supply loop both generate an ac power supply through an LC self-oscillation circuit, the first power supply loop includes a first capacitor, the first capacitor is coupled to a first step-up transformer through a first rectifying diode and a first charging resistor for charging, the first step-up transformer is coupled to a power supply voltage regulator, and is connected to a knife switch and an ac power supply through a first air switch, and the first capacitor is connected to an inductor through a first ac circuit breaker, thereby constructing an LC self-oscillation circuit; the second power supply loop comprises a second capacitor, the second capacitor is coupled with a second boosting transformer through a second rectifier diode and a second charging resistor for charging, the second boosting transformer is coupled with a power supply voltage regulator and is connected with a switch and an alternating current power supply through a second air switch, and the second capacitor is connected with an inductor through a second alternating current breaker, so that an LC self-oscillation circuit is also constructed, the two power supply loops share one inductor, the cost can be saved, and the circuit structure can be simplified.
The invention also provides a detection method based on the detection device for the switching performance of the mechanical direct current breaker, which comprises the following steps:
the method comprises the following steps that firstly, the sizes of a first capacitor of a first power supply loop, a second capacitor of a second power supply loop and an inductor are set according to the size of fault current to be simulated, and charging of the first capacitor and the second capacitor is completed;
step two, manually pressing a closing button of the high-voltage switch controller to control the first alternating-current circuit breaker to close, connecting a first power supply loop into a main loop, and starting the whole device;
and step three, by controlling the time sequence of the cutting of the first power supply circuit from the main circuit, the access of the second power supply circuit to the main circuit and the switching-on and switching-off of the direct current circuit breaker to be detected, the detection of the switching performance of the direct current circuit breaker to be detected is completed by using the acquisition instrument.
The specific process is as follows:
according to the requirements of a client, the switching performance detection of the direct current circuit breaker to be detected can be carried out under the load condition or the no-load condition, if the direct current circuit breaker to be detected is under the load condition, the time sequence is set as the opening of the direct current circuit breaker to be detected, the cutting of a first power supply loop from a main loop, the connection of a second power supply loop into the main loop, the closing of the direct current circuit breaker to be detected and the opening of the direct current circuit breaker to be detected; if the direct current breaker is in the no-load state, the time sequence is set as the opening of the direct current breaker to be detected, the cutting of the first power supply loop from the main loop, the closing of the direct current breaker to be detected, the access of the second power supply loop to the main loop and the opening of the direct current breaker to be detected.
Firstly, connecting a voltage detection probe of an acquisition instrument to two ends of a driving module of a direct current device to be detected, and connecting a current detection probe to a main loop; secondly, recording the first acquisition time and the second acquisition time of the voltage detection probe detected by the acquisition instrument, and the first zero-changing time of the current waveform transmitted to the acquisition instrument by the current detection probe; and thirdly, calculating the time interval between the first zero-changing moment and the first acquisition moment and the time interval between the second zero-changing moment and the second acquisition moment, comparing the time intervals with the requirement of the direct current circuit breaker to be detected, and judging whether the requirement of the switching performance of the direct current circuit breaker is met.
The detection process of the present invention is described in detail below with reference to a specific dc breaker to be detected.
The DC open circuit to be detected has the following performance requirements: the primary fault current is 16kA, the secondary fault current is 5kA, the time interval of two switching-off commands is 200ms, the fault current is required to be cleared within 5ms, the rated voltage is 50kV, and the effective switching-off time of the direct current circuit breaker to be detected is 2 ms.
According to the magnitude of the first fault current and the second fault current, the parameters of the power supply loop are designed as follows:
the first capacitor Ci1 is 2000mF, the second capacitor Ci2 is 2000mF, the inductance Li is 550mH, the first alternating current breaker CB 1/the second alternating current breaker CB2 are both 10kV vacuum alternating current breakers, the breaking current of the first alternating current breaker CB 1/the second alternating current breaker CB2 is 16kA-20kA, the power supply is direct current 110V, the rectifier diode VD1/VD2 is rated at 5kV, the charging resistor R1 is R2 is 10 kOmega, the first/second step-up transformer T1/T2 is provided with a primary side of 220V and a secondary side of 5kV, and the primary side of the first/second power supply voltage regulator is 220V and the secondary side of 0-220V;
the corresponding detection device is designed as follows:
the actual charging voltage of the first/second capacitor Ci1/Ci2 is measured through a voltage divider 1/2, the voltage of the first/second power supply voltage regulator is measured through a universal meter, the current is measured through a current clamp, the current of the main loop is measured through a current probe of a collecting instrument, and the opening command is measured through connecting the voltage probe of the collecting instrument to two ends of a driving module for driving the direct current circuit breaker to be detected. According to the requirements of customers, the fracture current of the direct current breaker to be detected can be selectively measured by using the shunt 0.02mV/A, the fracture voltage can be selectively measured by using the voltage divider 0-100kV, and certainly, probes of other channels of the acquisition instrument can also be used for measurement, so that all detection signals can be transmitted to a computer through the acquisition instrument and displayed or directly displayed on the acquisition instrument, and observation and calculation are facilitated.
Under the loaded state, the time sequence logic control of the main controller and the current change condition of the corresponding main loop are as shown in fig. 4, and the on-off performance of the direct current circuit breaker to be detected is judged by calculating whether the time interval of t2-t9 and t7-t10 corresponding to the current waveform of the main loop is less than 5 ms. Wherein,
t1, at the starting moment of the fault, the first alternating current circuit breaker CB1 is in a closing state, the first power supply loop is connected to the main loop, and primary short-circuit current is generated;
t 2-delaying for 3.0ms, and sending a first opening action command of the direct current breaker CB machinery to be detected;
t 3-delaying for 5.0ms, and mechanically opening the direct current breaker CB to be detected to cut off primary fault current;
t 4-delaying for 100ms, the first alternating current breaker CB1 is switched off, and the first power supply loop is cut off from the main loop;
t5, delaying for 150ms, switching on a second alternating current breaker CB2, and connecting a second power supply loop into a main loop to generate secondary short-circuit current;
t 6-delaying for 200ms, mechanically receiving a closing action command by the direct current Circuit Breaker (CB) to be detected, and closing in place;
t 7-delaying for 203ms, and sending a second switching action command of the direct current circuit breaker CB to be detected;
t 8-delaying for 205ms, and disconnecting the secondary fault current by the CB of the direct current breaker to be detected;
t9 — time when the primary fault current clears zero;
t 10-time when the secondary fault current clears zero.
Remarking: the time t3 and the time t8 are used for detecting the short-circuit current actually generated by the first/second power supply loop, so as to verify whether the design requirement is met or not, and the design requirement depends on the primary/secondary fault current, mainly depends on the frequency of the LC self-oscillation of the first/second power supply loop, for the loop design frequency of the embodiment, about 50Hz, the voltage of the first capacitor Ci1 is about 3.0kV, corresponding to the primary fault current 16kA, and the voltage of the first capacitor Ci2 is about 0.9kV, corresponding to the secondary fault current 5 kA.
The detection device provided by the invention can realize the adjustment and simulation of the magnitude of the fault current only by changing the magnitudes of the first capacitor/the second capacitor and the inductor, is strong in plastic modeling, wide and convenient to apply, and suitable for high-voltage and low-voltage direct current circuit breakers, can realize the simulation of controlling the secondary switching-off action at millisecond-level intervals by improving the main controller of the direct current circuit breaker and combining the auxiliary control unit, can fill the detection of the reclosing state of the direct current circuit breaker in China, can reduce the development cost of the switching-off performance for circuit breaker manufacturers, scientific research units and the like, and can also conveniently build a test platform.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many variations or modifications may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is therefore defined by the appended claims.
Claims (8)
1. The utility model provides a detection apparatus for be used for mechanical type direct current breaker performance of opening, its characterized in that: the circuit comprises a first power supply loop and a second power supply loop which are connected in parallel, wherein the input end of the first power supply loop and the input end of the second power supply loop are connected with an alternating current power supply, the output end of the first power supply loop and the output end of the second power supply loop are connected with a direct current circuit breaker to be detected, and the first power supply loop and the second power supply loop are used for generating corresponding alternating current power supplies according to the magnitude of fault current to be simulated;
the first power supply circuit comprises a first alternating current circuit breaker, the second power supply circuit comprises a second alternating current circuit breaker, the direct current circuit breaker to be detected is connected with a main controller, the main controller is connected with a secondary control unit, the secondary control unit is respectively connected with the first alternating current circuit breaker and the second alternating current circuit breaker, and the first alternating current circuit breaker is also connected with the main controller through a fault triggering module;
the fault trigger module is used for driving the first alternating current circuit breaker to be switched on, generating a fault signal and feeding the fault signal back to the main controller, the main controller receives the fault signal, sends switching-on and switching-off signals of the first alternating current circuit breaker and the second alternating current circuit breaker to the auxiliary control unit according to a set time interval and controls the switching-on and switching-off of the direct current circuit breaker to be detected, the auxiliary control unit is used for driving and controlling the switching-on and switching-off actions of the first alternating current circuit breaker and the second alternating current circuit breaker,
the fault triggering module comprises a high-voltage switch controller connected with a first alternating-current circuit breaker and a main controller, a closing button is arranged on the high-voltage switch controller, the closing button is pressed manually to drive the first alternating-current circuit breaker to close, a first power supply loop is connected into the main loop, a fault signal is generated, and the fault signal is fed back to the main controller.
2. The detecting device for opening performance of mechanical dc circuit breaker according to claim 1, characterized in that: the auxiliary control unit comprises a signal conversion module connected with the main controller, the signal conversion module is connected with an auxiliary controller, the auxiliary controller is connected with the first alternating current circuit breaker through a first electronic switch and is connected with the second alternating current circuit breaker through a second electronic switch, the first electronic switch is arranged on a link of the first alternating current circuit breaker and a power supply, the second electronic switch is arranged on a link of the second alternating current circuit breaker and the power supply, the signal conversion module is used for converting an optical signal sent by the main controller into an electric signal, the auxiliary controller controls the opening of the first alternating current circuit breaker through the first electronic switch and controls the closing of the second alternating current circuit breaker through the second electronic switch according to a received opening and closing signal.
3. The detecting device for opening performance of mechanical dc circuit breaker according to claim 1, characterized in that: the fault signal is a pulse signal.
4. The detecting device for opening performance of mechanical dc circuit breaker according to claim 1, characterized in that: and the first power supply loop and the second power supply loop generate an alternating current power supply through the LC self-oscillation circuit.
5. The detecting device for opening performance of mechanical DC circuit breaker according to claim 4, characterized in that: the first power supply loop comprises a first capacitor, the first capacitor is coupled with the first booster transformer for charging, and then is connected with the inductor through the first alternating current breaker; the second power supply loop comprises a second capacitor, the second capacitor is coupled with a second booster transformer for charging, and then the second capacitor is connected with the inductor through a second alternating current breaker.
6. The detection method of the detection device for the opening performance of the mechanical direct current circuit breaker is based on claim 5, and is characterized by comprising the following steps:
the method comprises the steps that firstly, the sizes of a first capacitor of a first power supply loop, a second capacitor of a second power supply loop and an inductor are set according to the size of fault current to be simulated, and the first capacitor and the second capacitor are charged;
step two, manually pressing a closing button of the high-voltage switch controller to control the first alternating-current circuit breaker to close, connecting a first power supply loop into a main loop, and starting the whole device;
and step three, by controlling the time sequence of the cutting of the first power supply circuit from the main circuit, the access of the second power supply circuit to the main circuit and the switching-on and switching-off of the direct current circuit breaker to be detected, the detection of the switching performance of the direct current circuit breaker to be detected is completed by using the acquisition instrument.
7. The detecting method of the detecting device for detecting the opening performance of the mechanical DC breaker according to claim 6, characterized in that: connecting a voltage detection probe of an acquisition instrument to two ends of a driving module of a direct current device to be detected, and connecting a current detection probe into a main loop; recording the first acquisition time and the second acquisition time of the voltage detection probe detected by the acquisition instrument, and the first zero-changing time and the second zero-changing time of the current waveform transmitted to the acquisition instrument by the current detection probe; and calculating the time interval between the first zero-changing moment and the first acquisition moment and the time interval between the second zero-changing moment and the second acquisition moment, comparing the time intervals with the requirement of the direct current circuit breaker to be detected, and judging whether the requirement of the switching performance of the direct current circuit breaker is met.
8. The detecting method of the detecting device for detecting the opening performance of the mechanical DC breaker according to claim 6, characterized in that: the time sequence is set as the opening of the direct current breaker to be detected, the cutting of the first power supply loop from the main loop, the connection of the second power supply loop to the main loop, the closing of the direct current breaker to be detected and the opening of the direct current breaker to be detected, or the opening of the direct current breaker to be detected, the cutting of the first power supply loop from the main loop, the closing of the direct current breaker to be detected, the connection of the second power supply loop to the main loop and the opening of the direct current breaker to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385361.7A CN109507576B (en) | 2018-11-20 | 2018-11-20 | Detection apparatus for be used for mechanical type direct current breaker performance of opening and shutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385361.7A CN109507576B (en) | 2018-11-20 | 2018-11-20 | Detection apparatus for be used for mechanical type direct current breaker performance of opening and shutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109507576A CN109507576A (en) | 2019-03-22 |
| CN109507576B true CN109507576B (en) | 2021-06-01 |
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| CN110376515B (en) * | 2019-07-10 | 2021-11-23 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | DC high-speed switch DC air charging current on-off test method |
| CN110376512B (en) * | 2019-07-10 | 2024-04-26 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Direct-current high-speed switch direct-current air-charge current breaking test loop |
| CN112824917A (en) * | 2019-11-20 | 2021-05-21 | 西安高压电器研究院有限责任公司 | Performance detection system of high-voltage direct-current circuit breaker |
| CN112824918B (en) * | 2019-11-20 | 2024-07-05 | 西安高压电器研究院股份有限公司 | Device and method for detecting reclosing performance of direct current breaker |
| CN112067985B (en) * | 2020-09-04 | 2023-05-02 | 全球能源互联网研究院有限公司 | Movable mould test device and transient fault simulation method for high-voltage direct-current circuit breaker |
| CN114280475B (en) * | 2021-12-29 | 2024-01-23 | 广东电网有限责任公司 | Tester for testing breaker characteristics |
| CN115877201B (en) * | 2023-03-09 | 2023-05-12 | 广东正超电气有限公司 | Running-in test power supply vehicle of switch cabinet circuit breaker |
| CN117451331B (en) * | 2023-09-28 | 2024-06-18 | 国网江苏省电力有限公司宿迁供电分公司 | Breaker mechanical characteristic monitoring device and method based on subsampled data |
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