CN115047268A - Performance test method and system for dual-power-supply quick switching device - Google Patents
Performance test method and system for dual-power-supply quick switching device Download PDFInfo
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- CN115047268A CN115047268A CN202210603662.2A CN202210603662A CN115047268A CN 115047268 A CN115047268 A CN 115047268A CN 202210603662 A CN202210603662 A CN 202210603662A CN 115047268 A CN115047268 A CN 115047268A
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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Abstract
The invention provides a performance test system of a double-power-supply quick switching device, which comprises a power grid simulation power supply, a power supply module, a remote setting analysis interface, a data acquisition module, a sensitive load and a test module. Also provides a device and method for testing the performance of the dual-power-supply quick switching device, which comprises the following steps: and setting a performance testing device, performing performance testing, and analyzing the performance of the dual-power-supply quick switching device. The method is very suitable for comprehensively carrying out durability test and functional characteristic inspection of the dual-power-supply quick switching device in a steady-state power quality and transient power quality disturbance environment. The method constructs a device test power supply ring network through flexible power generation of the sensitive load, greatly reduces the required power supply capacity of an external power supply, and increases the adaptability of a test system.
Description
Technical Field
The invention relates to the technical field of power equipment testing, in particular to a performance testing method and system for a dual-power-supply quick switching device.
Background
With the progress of science and technology and the development of society, a large amount of nonlinear loads and impact loads are put into use, and serious pollution and damage are caused to the electric energy quality of a power grid. Meanwhile, various precise and complex power loads are continuously connected to the power grid, such as important and sensitive medical equipment, precision manufacturing equipment, high-performance office equipment, and the like, which are more sensitive to the quality of electric energy. Among them, the problem of voltage sag is the most outstanding problem, which not only affects the normal use and production of users, but also causes serious economic loss directly or indirectly, and therefore, the improvement of the power quality of the power grid is urgent.
In order to solve the power quality problem of the power grid, custom power technology based on modern power electronics, control technology, computer and communication technology has emerged, this control device being collectively referred to as custom power device, such as: a Solid State Transfer Switch (SSTS), a Dynamic Voltage Restorer (DVR), an Active Power Filter (APF), a static synchronous compensator (STATCOM), a Unified Power Quality Controller (UPQC), and the like. Nowadays, important sensitive equipment adopts a dual-channel or multi-channel power supply, and the application of a dual-power-supply quick switching device is one of very effective methods for reducing the influence of voltage sag. At present, many organizations at home and abroad have conducted relevant research on switching logic and operation modes of the dual-power-supply fast switching device, and the actual operation performance of the dual-power-supply fast switching device is analyzed through a three-phase power phase shifter and a voltage sag simulation device. However, the influence of the power quality disturbance on the normal operation of the dual-power-supply quick switching device is not deeply tested and analyzed at present.
Disclosure of Invention
In view of the above disadvantages, the present invention provides a performance testing method and system for a dual power supply fast switching device, which performs on-site research on the dual power supply fast switching device to obtain the rated voltage and rated power of the device, and comprehensively develops the power quality tolerance test and performance test of the dual power supply fast switching device in the environment of disturbance of the steady state power quality and the transient state power quality, so as to obtain the transient state and steady state switching threshold and the disturbance tolerance threshold of the normal steady state power quality. The technical scheme is as follows:
a performance test system of a dual-power-supply quick switching device comprises a power grid simulation power supply, a power supply module, a remote setting analysis interface, a data acquisition module, a sensitive load and a test module;
the power grid simulation power supply simulates the power quality disturbance condition of a power grid in which the dual-power-supply quick switching device operates;
the power supply module provides a single-phase or three-phase alternating current power supply for the power grid simulation power supply and outputs the power grid simulation power supply to the test module; the power supply module provides a working power supply for the power grid simulation power supply, the remote setting analysis interface and the data acquisition module;
the remote setting analysis interface remotely sets the operation mode of the power grid simulation power supply and the relevant parameters of the disturbance occurrence time and degree through a communication interface;
the data acquisition module acquires signals of a power supply side and a load side of the test module through voltage and current signals;
the sensitive load simulates important and sensitive medical equipment, precision manufacturing equipment and high-performance office equipment, and the power generation output of the sensitive load is fed back to the power supply module;
the input port of the test module is connected with the power grid simulation power supply, and the output port of the test module is connected with the sensitive load.
Furthermore, the power grid simulation power supply is used for simulating power supply disturbance, voltage instantaneous interruption transient, harmonic and inter-harmonic distortion waveform synthesis.
Further, the power supply module comprises a circuit breaker and an air switch, and the air switch adopts a universal single-phase air switch.
Furthermore, the data acquisition module adopts a power quality analyzer, the power quality analyzer performs real-time seamless wave recording and acquires power quality data, and the power quality data comprises path voltage and current signals of a power supply side and a load side.
Furthermore, the remote setting analysis interface adopts an industrial personal computer, and is connected with the power grid analog power supply and the data acquisition module through an Ethernet by using a switch; software on the industrial control computer remotely sets the power quality disturbance customized by the power grid analog power supply output, and the data acquisition module acquires real-time recording files and power quality statistical data.
Furthermore, the sensitive load adopts a three-phase variable frequency motor.
Further, the test module is a dual-power-supply fast switching device.
A performance test device method for a dual-power-supply quick switching device comprises the following steps:
setting a performance testing device: simulating the power quality disturbance condition of the power grid operated by the dual-power-supply quick switching device by adopting a power grid simulation power supply; simulating a sensitive load by adopting a three-phase variable frequency motor; recording and broadcasting and counting power quality data by using a power quality analyzer; setting the customized power quality disturbance output by the power grid analog power supply by adopting an engineering computer, and acquiring a real-time wave recording file and power quality data by using the energy quality analyzer;
and (3) performing a performance test: the method comprises the steady-state voltage deviation switching characteristic of a dual-power-supply quick switching device under sine power supply, the transient voltage disturbance switching characteristic of the dual-power-supply quick switching device under sine power supply, the switching characteristic of the dual-power-supply quick switching device under steady-state disturbance, the switching characteristic of the dual-power-supply quick switching device under background distortion and transient disturbance and the switching characteristic of the dual-power-supply quick switching device from a main power supply to a standby power supply with background distortion;
analyzing the performance of the dual-power-supply quick switching device: analyzing the performance or switching threshold value of the dual-power-supply quick switching device under sinusoidal power supply; and analyzing a disturbance tolerance threshold value of the power quality of the dual-power-supply quick switching device in a steady state.
Compared with the prior art, the beneficial effects are that:
the invention provides a performance test method and a system of a dual-power-supply quick switching device, wherein the method is very suitable for comprehensively carrying out durability test and functional characteristic inspection of the dual-power-supply quick switching device in a disturbance environment of steady-state power quality and transient-state power quality, the steady-state power quality comprises sinusoidal voltage deviation, background harmonic waves, voltage unbalance and voltage fluctuation, and the transient-state power quality comprises power supply sag and transient mutation. The method constructs a device test power supply ring network through flexible power generation of a sensitive load, thereby greatly reducing the required power supply capacity of an external power supply and increasing the adaptability of a test system; the safety of the site is increased through a remote analysis interface; the data acquisition has real-time wave recording and electric energy quality statistics functions, so that the comprehensive accuracy of the test system is realized, the test guarantee is provided for the dual-power-supply quick switching device on the site, and the improvement of the quality of on-site power protection and supply of a power grid enterprise is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a system for testing the performance of a dual power fast switching device;
FIG. 2 is a flow chart of a performance testing system for a dual power fast switching device;
FIG. 3 is a table 1 "Steady State Voltage deviation device switching characteristic test recording Table";
FIG. 4 is a table 2 "transient voltage disturbance device switching characteristic test recording table";
FIG. 5 is a table 3 "Steady State disturbance device switching characteristic test List";
FIG. 6 is a table 4 "device switching characteristic test record table under background distortion and transient disturbance";
FIG. 7 is a table 5 "test chart of device switching characteristics under disturbance of standby power".
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
A performance test system of a dual-power-supply quick switching device comprises two sets of power grid simulation power supplies, a power supply module, a remote setting analysis interface, a data acquisition module, a sensitive load and a test module;
the power grid simulation power supply simulates the power quality disturbance condition of a power grid in which the dual-power-supply quick switching device operates;
the power supply module provides a single-phase or three-phase alternating current power supply for the power grid simulation power supply and outputs the power supply to the test module; the power supply module provides a working power supply for the power grid simulation power supply, the remote setting analysis interface and the data acquisition module;
the remote setting analysis interface remotely sets the operation mode of the power grid simulation power supply and the relevant parameters of the disturbance occurrence time and degree through the communication interface;
the data acquisition module acquires signals of a power supply side and a load side of the test module through voltage and current signals;
the sensitive load simulates important and sensitive medical equipment, precision manufacturing equipment and high-performance office equipment, the sensitive load is provided with a path of three-phase alternating current power supply by a test module, and the power generation output of the sensitive load is fed back to a power supply module;
the input port of the test module is connected with a power grid simulation power supply, and the output port of the test module is connected with a sensitive load.
Specifically, the power grid simulation power supply can select single-phase or three-phase alternating current output, can control the change rate of voltage and frequency, can set output limit of voltage and current, set the on-off angle of voltage waveform of 0-360 degrees, output synchronous TTL signals of voltage change, can be used for testing power supply disturbance, transient voltage interruption simulation, harmonic wave and inter-harmonic wave distortion waveform synthesis, has a parameter measurement function and comprises current harmonic components of various orders, and the communication mode supports GPIB, RS-232, USB, Ethernet and the like, and can be arranged on a remote interface.
Specifically, the power supply module is provided with 1 set of circuit breakers and 1 set of air switches for providing one-path three-phase alternating-current power supply. The circuit breaker mainly provides a power quality disturbance tolerance testing power supply for the power grid simulation power supply; the air switch adopts a universal single-phase air switch and is mainly a working power supply of a data acquisition module and a remote setting analysis interface.
Specifically, the data acquisition module is used for recording waves seamlessly in real time, works stably and reliably, can avoid omission of data acquisition in the test process, and can meet the requirements of acquisition of three voltage and current signals on the power supply side and the load side. Specifically, the data acquisition module of the invention adopts 3 portable electric energy quality analyzers, wherein 1 device meets the requirements of acquisition of three-phase voltage and three-phase current signals. The synchronous test and time calibration of 3 sets of equipment are realized by opening in and out signal interfaces, each set of equipment has the measurement precision of 0.1%, the voltage, current and frequency resolution respectively reach 0.001V, 0.001A and 0.001Hz, the real-time waveform recording of each cycle at 128/256/512/1024 points is supported, and the recording file adopts a standard comtrade format file and has the synchronous function of integrating power quality analysis and real-time waveform recording.
Specifically, the remote analysis interface is 1 industrial control computer, and 2 sets of power grid simulation power supplies and 3 sets of portable power quality analyzers are connected through the Ethernet by using a switch. The software on the industrial control computer can be used for remotely setting the power quality disturbance customized by the power grid analog power supply output, and the data acquisition module acquires real-time wave recording files and power quality statistical data.
Particularly, the sensitive load adopts a three-phase variable frequency motor which is mainly used for important and sensitive medical equipment, precision manufacturing equipment and high-performance office equipment. The three-phase variable frequency motor comprises a three-phase frequency converter, a universal motor and a load, wherein the input and output of the three-phase frequency converter are all three-phase 380V, the power is 18.5kW, the current is 37A, the motor is a 160L pure copper 18.5kW, a 2-pole 2930-rotation three-phase asynchronous motor, the load adopts a three-phase alternating current synchronous generator, and the three-phase alternating current which is sent out is connected back to the output of the power supply module again for reducing the energy consumption of the whole test platform. .
Specifically, the test module is a dual-power-supply fast switching device. The test module is a test card position of the dual-power-supply quick switching device and mainly carries out power quality disturbance tolerance and performance test on the dual-power-supply quick switching device. The dual-power-supply quick switching device is provided with two paths of three-phase alternating-current power supply input interfaces and one path of three-phase alternating-current power supply output interface, and a control power supply of the dual-power-supply quick switching device is not provided externally and is provided inside the dual-power-supply quick switching device.
As shown in fig. 2, a performance testing system for a dual power supply fast switching device includes the following specific implementation procedures:
s101: and (6) correct wiring. The input interfaces of a main power supply and a standby power supply of the double-power-supply quick switching device are respectively connected to the power grid simulation power supplies 1 and 2, and the output interface is connected to a sensitive load.
S102: and initializing the system and completing self-checking. And switching on the single-phase working power supply of the power supply module, starting the power grid simulation power supply, the data acquisition module and the remote setting analysis interface, and carrying out system self-inspection, wherein the detection items comprise whether a short circuit exists in a main loop, whether the data acquisition module works normally and whether the remote setting analysis interface works normally.
S103: setting a power grid simulation power supply, closing a breaker, reading a wave recording file and electric energy quality statistical data, and disconnecting the breaker. And performing performance test by circulation until all test items are completed. The performance test comprises five types including a steady-state voltage deviation switching characteristic of the dual-power-supply quick switching device under sine power supply, a transient-state voltage disturbance switching characteristic of the dual-power-supply quick switching device under sine power supply, a switching characteristic of the dual-power-supply quick switching device under steady-state disturbance, a switching characteristic of the dual-power-supply quick switching device under background distortion and transient-state disturbance and a switching characteristic of the dual-power-supply quick switching device from a main power supply to a standby power supply with background distortion.
S104: and analyzing the power quality disturbance tolerance and the switching performance of the dual-power-supply quick switching device.
S105: and (6) ending. And disconnecting all power supplies of the system, and removing the wiring of the dual-power-supply quick switching device.
A performance test device method for a dual-power-supply quick switching device comprises the following steps:
setting a performance testing device: simulating the power quality disturbance condition of the power grid operated by the dual-power-supply quick switching device by adopting a power grid simulation power supply; simulating a sensitive load by adopting a three-phase variable frequency motor; recording and broadcasting and counting power quality data by using a power quality analyzer; and setting power grid simulation power supply output customized power quality disturbance by adopting an engineering computer, and acquiring real-time wave recording files and power quality data by using a power quality analyzer.
And (3) performing a performance test: the switching characteristic of the dual-power-supply quick switching device under the condition of sine power supply comprises a steady-state voltage deviation switching characteristic of the dual-power-supply quick switching device under the condition of sine power supply, a transient-state voltage disturbance switching characteristic of the dual-power-supply quick switching device under the condition of sine power supply, a switching characteristic of the dual-power-supply quick switching device under the condition of steady-state disturbance, a switching characteristic of the dual-power-supply quick switching device under the condition of background distortion and transient disturbance and a switching characteristic of the dual-power-supply quick switching device from a main power supply to a standby power supply with background distortion.
Analyzing the performance of the dual-power-supply quick switching device: analyzing the performance or switching threshold value of the dual-power-supply quick switching device under sinusoidal power supply; and analyzing a disturbance tolerance threshold value of the power quality of the dual-power-supply quick switching device in a steady state.
The stable voltage deviation switching characteristic of the double-power-supply quick switching device under the sine power supply is as follows:
under the sine power supply positive/negative voltage deviation test condition, the switching characteristic of the dual-power-supply quick switching device is analyzed, whether the dual-power-supply quick switching device can be switched to a standby power supply under a normal condition is observed, the switching threshold value under the steady-state voltage deviation is obtained, the test can be set by referring to a steady-state voltage deviation device switching characteristic test recording table shown in a table 1 in figure 3, and corresponding data is recorded.
Transient voltage disturbance switching characteristics of the dual-power-supply quick switching device under sine power supply: whether the dual-power-supply quick switching device can be normally switched to a standby power supply or not is tested through voltage sag, voltage rise or instantaneous voltage drop under normal sinusoidal power supply, a transient disturbance switching threshold value of the dual-power-supply quick switching device is obtained, the test can be set by referring to a transient voltage disturbance device switching characteristic test recording table shown in a table 2 in figure 4, and corresponding data is recorded.
The switching characteristic of the dual-power-supply quick switching device under steady-state disturbance is as follows: in order to obtain the normal operation and non-switching characteristics of the dual-power-supply quick switching device under the condition of steady-state disturbance, wherein the steady-state disturbance comprises three interferences of harmonic voltage distortion, three-phase voltage imbalance and voltage fluctuation, the test can be set by referring to a steady-state disturbance device switching characteristic test recording table shown in a table 3 in a figure 5, and corresponding data can be recorded.
Switching characteristics of the dual-power-supply quick switching device under background distortion and transient disturbance: in order to obtain the switching characteristics of the dual-power-supply fast switching device under the conditions of background distortion and transient disturbance, the test can be set by referring to a device switching characteristic test recording table under the conditions of background distortion and transient disturbance in a table 4 in fig. 6, and corresponding data is recorded.
Switching characteristics of the dual power supply fast switching device from a main power supply to a standby power supply with background distortion: the above test results are based on the switching characteristics of the dual-power fast switching device with the background distortion of the main power supply, and in order to obtain the switching characteristics of the dual-power fast switching device with the background distortion of the standby power supply, the test can be set with reference to table 5 "device switching characteristic test recording table under standby power supply disturbance" in fig. 7, and corresponding data is recorded.
The performance test method of the dual-power-supply quick switching device is very suitable for comprehensively carrying out durability test and functional characteristic inspection of the dual-power-supply quick switching device in a steady-state power quality and transient power quality disturbance environment, wherein the steady-state power quality comprises sinusoidal voltage deviation, background harmonic waves, voltage unbalance and voltage fluctuation, and the transient power quality comprises power supply sag and transient sudden change. The method constructs a device test power supply ring network through flexible power generation of a sensitive load, thereby greatly reducing the required power supply capacity of an external power supply and increasing the adaptability of a test system; the safety of the site is increased through a remote analysis interface; the data acquisition has real-time wave recording and electric energy quality statistics functions, so that the comprehensive accuracy of the test system is realized, the test guarantee is provided for the dual-power-supply quick switching device on the site, and the improvement of the quality of on-site power protection and supply of a power grid enterprise is facilitated.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (8)
1. A performance test system of a dual-power-supply quick switching device is characterized by comprising a power grid simulation power supply, a power supply module, a remote setting analysis interface, a data acquisition module, a sensitive load and a test module;
the power grid simulation power supply simulates the power quality disturbance condition of a power grid in which the dual-power-supply quick switching device operates;
the power supply module provides a single-phase or three-phase alternating current power supply for the power grid simulation power supply and outputs the power grid simulation power supply to the test module; the power supply module provides a working power supply for the power grid simulation power supply, the remote setting analysis interface and the data acquisition module;
the remote setting analysis interface remotely sets the operation mode of the power grid simulation power supply and the relevant parameters of the disturbance occurrence time and degree through a communication interface;
the data acquisition module acquires signals of a power supply side and a load side of the test module through voltage and current signals;
the sensitive load simulates important and sensitive medical equipment, precision manufacturing equipment and high-performance office equipment, and the power generation output of the sensitive load is fed back to the power supply module;
the input port of the test module is connected with the power grid simulation power supply, and the output port of the test module is connected with the sensitive load.
2. The system for testing the performance of the dual power supply fast switching device according to claim 1, wherein the power grid analog power supply is used for simulating test power supply disturbance, analog voltage transient interruption transient, and distortion waveform synthesis of harmonic waves and inter-harmonic waves.
3. The system for testing the performance of the dual-power-supply quick switching device is characterized in that the power supply module comprises a circuit breaker and an air switch, and the air switch adopts a universal single-phase air switch.
4. The system for testing the performance of the dual-power-supply quick switching device, according to claim 1, is characterized in that the data acquisition module adopts a power quality analyzer, the power quality analyzer performs real-time seamless wave recording and acquires power quality data, and the power quality data comprises path voltage and current signals of a power supply side and a load side.
5. The system for testing the performance of the dual-power-supply quick switching device is characterized in that the remote setting analysis interface adopts an industrial personal computer, and a switch is used for connecting the power grid simulation power supply and the data acquisition module through an Ethernet; software on the industrial control computer remotely sets the power quality disturbance customized by the power grid analog power supply output, and the data acquisition module acquires real-time recording files and power quality statistical data.
6. The performance testing system of the dual power supply fast switching device according to claim 1, wherein the sensitive load is a three-phase variable frequency motor.
7. The system for testing the performance of the dual-power-supply quick switching device according to claim 1, wherein the testing module is the dual-power-supply quick switching device.
8. A performance test device method for a dual-power-supply quick switching device is characterized by comprising the following steps:
setting a performance testing device: simulating the power quality disturbance condition of the power grid operated by the dual-power-supply quick switching device by adopting a power grid simulation power supply; simulating a sensitive load by adopting a three-phase variable frequency motor; recording and broadcasting and counting power quality data by using a power quality analyzer; setting the customized power quality disturbance output by the power grid analog power supply by adopting an engineering computer, and acquiring a real-time wave recording file and power quality data by using the energy quality analyzer;
and (3) performing a performance test: the method comprises the steady-state voltage deviation switching characteristic of a dual-power-supply quick switching device under sine power supply, the transient voltage disturbance switching characteristic of the dual-power-supply quick switching device under sine power supply, the switching characteristic of the dual-power-supply quick switching device under steady-state disturbance, the switching characteristic of the dual-power-supply quick switching device under background distortion and transient disturbance and the switching characteristic of the dual-power-supply quick switching device from a main power supply to a standby power supply with background distortion;
analyzing the performance of the dual-power-supply quick switching device: analyzing the performance or switching threshold value of the dual-power-supply quick switching device under sinusoidal power supply; and analyzing a disturbance tolerance threshold value of the power quality of the dual-power-supply quick switching device in a steady state.
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| CN117538640A (en) * | 2023-11-07 | 2024-02-09 | 苏州逐晨科技有限公司 | Test device and method for voltage mutation immunity test |
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2022
- 2022-05-30 CN CN202210603662.2A patent/CN115047268A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117538640A (en) * | 2023-11-07 | 2024-02-09 | 苏州逐晨科技有限公司 | Test device and method for voltage mutation immunity test |
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