CN210604807U - Relay protection vector testing device and relay protection testing system - Google Patents
Relay protection vector testing device and relay protection testing system Download PDFInfo
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- CN210604807U CN210604807U CN201920220838.XU CN201920220838U CN210604807U CN 210604807 U CN210604807 U CN 210604807U CN 201920220838 U CN201920220838 U CN 201920220838U CN 210604807 U CN210604807 U CN 210604807U
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Abstract
The utility model discloses a relay protection vector testing arrangement and relay protection test system. Wherein the device includes: the signal generating unit is configured to adjust amplitude and/or phase and output a first three-way analog small signal and a second three-way analog small signal; a three-phase current output unit configured to be coupled with the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to the primary device according to the first three-way analog small signal; a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to the primary device according to the second three-way analog small signal. The utility model discloses can apply high voltage and heavy current at primary equipment before transformer substation's input operation for the uniformity of all current transformer and voltage transformer phase place is guaranteed in the vector relation of test primary equipment and secondary equipment.
Description
Technical Field
The utility model relates to a test instrument technical field particularly, relates to a relay protection vector testing arrangement and relay protection test system.
Background
Vector test work of primary equipment and secondary equipment is required to be carried out during transformer substation capital construction project acceptance. The existing vector test work is realized according to working voltage and load current after a transformer substation is put into operation, and belongs to a vector test method of 'after-the-fact verification'. However, in the initial stage of operation of the transformer substation, load organization is difficult, and if the load is too light, power plant reverse power transmission, high-speed rail traction station power transmission and the like occur, the test of the relay protection vector is not accurate enough, and the normal operation of the transformer substation is influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an at least, disclose a relay protection vector testing arrangement, can apply high voltage and heavy current at primary equipment before transformer substation's input operation for the uniformity of all current transformer and voltage transformer phase place is guaranteed in the vector relation of test primary equipment and secondary equipment.
The device comprises:
the signal generating unit is configured to adjust amplitude and/or phase and output a first three-way analog small signal and a second three-way analog small signal;
a three-phase current output unit configured to be coupled to the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to a primary device according to the first three-way analog small signal;
a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to a primary device according to the second three-way analog small signal.
In some embodiments of the inventive disclosures made herein, the signal generation unit includes:
the lower computer is configured to communicate with the upper computer, acquire test data output by the upper computer, and output a first control signal and a second control signal according to the test data;
a first digital-to-analog conversion circuit configured to couple to the lower computer and receive the first control signal, and the first digital-to-analog conversion circuit outputs the first three-way analog small signal according to the first control signal;
a second digital-to-analog conversion circuit configured to couple to the lower computer and receive the second control signal, and the second digital-to-analog conversion circuit outputs the second three-way analog small signal according to the second control signal.
In some embodiments of the disclosure, the upper computer includes a terminal and a touch screen, the touch screen is configured to receive an input signal and send the input signal to the terminal, and the terminal drives the lower computer to adjust the amplitude and/or the phase of the first three-way analog small signal and/or the second three-way analog small signal according to the input signal.
In some embodiments of the invention disclosed, the upper computer is a mobile terminal.
In some embodiments of the inventive disclosures made herein, the three-phase current output unit includes:
three current amplifier circuit groups, configured to be coupled to the signal generating unit and receive a first analog small signal of one phase of the first three analog small signals, and output a large current of a corresponding phase of the three-phase large currents to the primary device according to the first analog small signals of different phases;
in some embodiments disclosed in the present invention, the current amplifier circuit set includes at least two current amplifier modules, wherein a first bus voltage is input to an input terminal of the current amplifier module, the first analog small signal is input to a control terminal, and the large current is output to the primary device at an output terminal;
and the output ends of any current power amplification module are connected in parallel.
In some embodiments of the inventive disclosures made herein, the three-phase voltage output unit includes:
the three voltage power amplifier circuit groups are configured to be coupled with the signal generating unit and receive a second analog small signal of one phase in the second three paths of analog small signals, and the three voltage power amplifier circuit groups respectively output high voltage of a corresponding phase in the three-phase high voltage to the primary equipment according to the second analog small signals of different phases.
In some embodiments of the present disclosure, the voltage amplifier circuit set includes:
the voltage power amplifier module is configured that a second bus voltage is input at the input end, the second analog small signal is input at the control end, and a voltage signal is output at the output end;
the voltage boosting circuit is configured to be coupled with the voltage power amplifier module and receive the voltage signal, and the voltage boosting circuit boosts the voltage signal to output high voltage to the primary equipment of the corresponding phase.
The embodiment of the invention at least discloses a relay protection vector testing device.
The device comprises:
the upper computer is configured to comprise a terminal and a touch screen, the touch screen is configured to receive a key-in signal and send the key-in signal to the terminal, and the terminal drives and outputs a control signal according to the key-in signal;
the signal generation unit is configured to communicate with an upper computer through a communication protocol and receive the control signal, and the signal generation unit adjusts the amplitude and/or the phase of the output first three-way analog small signal and second three-way analog small signal according to the control signal;
a three-phase current output unit configured to be coupled to the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to a primary device according to the first three-way analog small signal;
a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to a primary device according to the second three-way analog small signal.
A mobile platform configured to internally integrate the signal generation unit, the three-phase current output unit, the three-phase voltage output unit, and the terminal, and externally configured to be mounted with three current terminals respectively coupled with a three-phase large current, three voltage terminals respectively coupled with a three-phase high voltage, and the touch screen.
The embodiment of the invention at least discloses a relay protection test system.
The system comprises:
the signal generating unit is configured to adjust amplitude and/or phase and output a first three-way analog small signal and a second three-way analog small signal;
a three-phase current output unit configured to be coupled to the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to a primary device according to the first three-way analog small signal;
a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to a primary device according to the second three-way analog small signal;
a current transformer configured to be coupled to a secondary device;
a voltage transformer configured to be coupled to a secondary device;
a relay protection device coupled to the current transformer and the voltage transformer.
In view of the above, other features and advantages of the embodiments of the present invention will become apparent from the following detailed description of the disclosed exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a relay protection vector testing apparatus according to the present embodiment;
fig. 2 is a schematic diagram of a three-phase current output unit of the present embodiment;
fig. 3 is a schematic diagram of a current amplifier circuit set according to this embodiment;
fig. 4 is a schematic diagram of a three-phase voltage output unit of the present embodiment;
fig. 5 is a schematic diagram of a voltage amplifier circuit set according to this embodiment;
fig. 6 is a schematic diagram of the relay protection testing system of the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as disclosed in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment discloses a relay protection vector testing device. The device of the embodiment can introduce three-phase heavy current and three-phase high voltage into primary equipment before the transformer substation is put into operation, and is used for testing the vector relationship between the primary equipment and secondary equipment, so that the phases of a voltage transformer and a current transformer coupled in the transformer substation are kept consistent.
Specifically, the device of the embodiment communicates with an upper computer, and generates three-phase large current and three-phase high voltage with different phases and amplitudes according to test data input by the upper computer; or only responding to the operation instruction of the upper computer to generate the preset three-phase heavy current and the three-phase high voltage.
The upper computer may be an electronic Terminal, and may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile Station (MS), a User Equipment (UE), and the like. An electronic terminal, which may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem, such as: the electronic terminal may be a mobile phone (or referred to as a "cellular" phone), a Computer with a mobile terminal, or a portable, pocket, handheld, Computer-embedded or vehicle-mounted mobile device, or may be a wearable device (such as a smart watch, a smart bracelet, or the like), a tablet Computer, a Personal Computer (PC), a Personal Digital Assistant (PDA), a POS (Point of Sales), or the like.
The electronic terminal is implemented in this embodiment with at least a memory and a display. The memory mainly comprises a program storage area and a data storage area; the storage program area may store an operating system (for example, an android operating system, abbreviated as "android system", or an ios operating system, or another operating system, where the operating system may also be abbreviated as "system"), and an application program (for example, a sound playing function, an image playing function, etc.) required by at least one function. And, the storage data area may store data created according to the use of the electronic terminal, including related setting information or use condition information of the application displayed on the display screen, and the like, which are referred to in the embodiments of the present application. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, and other volatile solid state storage devices.
The display screen may be used to display information input by or provided to a user and various applications installed in the electronic terminal. The display screen may include a display panel, and optionally, the display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel may cover the display panel, and when the touch panel tests a touch operation on or near the touch panel, the touch panel may transmit the touch operation to the processor to determine the type of the touch event, and then the processor may provide a corresponding visual output on the display panel according to the type of the touch event.
Please refer to fig. 1; the device of the embodiment comprises a signal generating unit, a three-phase current output unit and a three-phase current output unit.
The signal generating unit comprises a lower computer, a first digital-to-analog conversion unit and a second digital-to-analog conversion unit. The lower computer is a DSP + FPGA, namely a DSP hardware system with an FPGA coprocessor; the lower computer is communicated with the upper computer through a preset communication protocol and is used for acquiring test data; or the standardized test data called after responding to the operation instruction of the upper computer is preset. The lower computer generates a first digital signal and a second digital signal which describe different amplitudes and phases after acquiring the test data.
The first digital-to-analog conversion unit and the second digital-to-analog conversion unit are both 1-path 16-bit 4-channel DACs;
the first digital-to-analog conversion unit receives and converts the first digital signal to generate a first three paths of analog small signals; the second digital-to-analog conversion unit receives and converts the second digital signal to generate a second three-way analog small signal. The first three analog small signals and the second three analog small signals enable a general switching tube, such as a triode, to work in an amplification state, so that the switching tube can respond to the analog small signals to amplify an external signal.
The first three analog small signals of the present embodiment are received by the three-phase current output unit. The three-phase current output unit outputs three-phase large current to primary equipment according to the first three paths of analog small signals.
Referring to fig. 2, the three-phase current output unit includes three current amplifying circuit groups. The three current power amplifier circuit groups respectively select a VP1 bus voltage as an input voltage, and respectively output an A-phase large current, a B-phase large current and a C-phase large current according to an A-phase first analog small signal, a B-phase first analog small signal and a C-phase first analog small signal as control signals.
Then, since the first analog small signal makes the switching tube, such as a triode, in the core of the current amplifier circuit group operate in an amplifying state, the first analog small signal can linearly make the current amplifier circuit group to amplify the VP1 bus voltage and output a large current.
Referring to fig. 3, the present embodiment is exemplified by a current amplifier circuit set that inputs a phase a first analog small signal and outputs a phase a large current. The current power amplifier circuit group comprises N current power amplifier modules with output ends connected in parallel, wherein N is greater than or equal to 1, VP1 bus voltage is input to the input ends, and A-phase first analog small signals are input to the control ends; then any current power amplifier module can linearly amplify the VP1 bus voltage according to the amplitude change of the A-phase first analog small signal to serve as the amplitude of the output current, and control the phase of the output current according to the phase of the A-phase first analog small signal; meanwhile, the N current power amplifier modules are connected in parallel at the output end, so that the output of the current power amplifier circuit group is the accumulation of the output current of the N current isolating power amplifier modules, and the output of A-phase large current is realized.
The second three analog small signals of this embodiment are received by the three-phase voltage output unit. And the three-phase voltage output unit outputs three-phase high voltage to primary equipment according to the second three paths of analog small signals.
Specifically, referring to fig. 4, the three-phase voltage output unit includes three voltage power amplifier circuit groups. The three voltage power amplifier circuit groups respectively select a VP2 bus voltage as an input voltage, and respectively output an A-phase high voltage, a B-phase high voltage and a C-phase high voltage according to an A-phase second analog small signal, a B-phase second analog small signal and a C-phase second analog small signal as control signals.
Referring to fig. 5, the present embodiment takes a voltage amplifier circuit set for inputting a phase a second analog small signal and outputting a phase a high voltage as an example. The voltage power amplifier circuit group comprises a voltage power amplifier module and a boosting device.
VP2 bus voltage is input to the input ends of the voltage power amplifier modules, and A-phase second analog small signals are input to the control ends of the voltage power amplifier modules; then any voltage power amplifier module can linearly amplify the VP2 bus voltage as the amplitude of the output voltage according to the amplitude variation of the a-phase second analog small signal and control the phase of the output voltage according to the phase of the a-phase second analog small signal. The input end of the booster is coupled with the output end of the voltage power amplifier module, and the output end of the booster is coupled with the primary equipment.
In summary, the present embodiment obtains the large current and the high voltage for testing the primary device and the secondary device through the small analog signals with different amplitudes and phases.
Preferably, the current amplifier module and the voltage amplifier module of this embodiment may be formed by an amplifier and a basic circuit unit, such as a proportional amplifier circuit formed by an amplifier, which is well known to those skilled in the art. Therefore, the specific circuit composition of the current power amplifier module and the voltage power amplifier module is not limited in this embodiment.
The embodiment provides a mobile platform. The mobile platform is internally integrated with a signal generation unit, a three-phase current output unit, a three-phase voltage output unit and a terminal of the device, and is externally provided with three current terminals respectively coupled with three-phase large current, three voltage terminals respectively coupled with three-phase high voltage and a touch screen.
Referring to fig. 6, the present embodiment further provides a relay protection testing system. The system comprises the device of the embodiment, a current transformer, a voltage transformer and a relay protection device. The current transformer is used for being coupled to the secondary equipment, and the voltage transformer is used for being coupled to the secondary equipment; the relay protection device is used for being coupled with the current transformer and the voltage transformer.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A relay protection vector testing device is characterized in that,
the device comprises:
the signal generating unit is configured to adjust amplitude and/or phase and output a first three-way analog small signal and a second three-way analog small signal;
a three-phase current output unit configured to be coupled to the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to a primary device according to the first three-way analog small signal;
a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to a primary device according to the second three-way analog small signal.
2. The relay protection vector test apparatus of claim 1,
the signal generation unit includes:
the lower computer is configured to communicate with the upper computer, acquire test data output by the upper computer, and output a first control signal and a second control signal according to the test data;
a first digital-to-analog conversion circuit configured to couple to the lower computer and receive the first control signal, and the first digital-to-analog conversion circuit outputs the first three-way analog small signal according to the first control signal;
a second digital-to-analog conversion circuit configured to couple to the lower computer and receive the second control signal, and the second digital-to-analog conversion circuit outputs the second three-way analog small signal according to the second control signal.
3. The relay protection vector test apparatus of claim 2,
the upper computer comprises a terminal and a touch screen, the touch screen is configured to receive an input signal and send the input signal to the terminal, and the terminal drives the lower computer to adjust the amplitude and/or the phase of the first three paths of analog small signals and/or the second three paths of analog small signals according to the input signal.
4. The relay protection vector test apparatus of claim 3,
the upper computer is a mobile terminal.
5. The relay protection vector test apparatus of claim 1,
the three-phase current output unit includes:
the three current power amplifier circuit groups are configured to be coupled with the signal generating unit and receive a first analog small signal of one phase in the first three paths of analog small signals, and the three current power amplifier circuit groups respectively output the large current of the corresponding phase in the three phases of large currents to the primary equipment according to the first analog small signals of different phases.
6. The relay protection vector test apparatus of claim 5,
the current power amplifier circuit group comprises at least two current power amplifier modules, wherein the input end of each current power amplifier module inputs first bus voltage, the control end inputs the first analog small signal, and the output end outputs the large current to the primary equipment;
and the output ends of any current power amplification module are connected in parallel.
7. The relay protection vector test apparatus of claim 1,
the three-phase voltage output unit includes:
the three voltage power amplifier circuit groups are configured to be coupled with the signal generating unit and receive a second analog small signal of one phase in the second three paths of analog small signals, and the three voltage power amplifier circuit groups respectively output high voltage of a corresponding phase in the three-phase high voltage to the primary equipment according to the second analog small signals of different phases.
8. The relay protection vector test apparatus of claim 7,
the voltage power amplifier circuit group comprises:
the voltage power amplifier module is configured that a second bus voltage is input at the input end, the second analog small signal is input at the control end, and a voltage signal is output at the output end;
the voltage boosting circuit is configured to be coupled with the voltage power amplifier module and receive the voltage signal, and the voltage boosting circuit boosts the voltage signal to output high voltage to the primary equipment of the corresponding phase.
9. A relay protection vector testing device is characterized in that,
the device comprises:
the upper computer is configured to comprise a terminal and a touch screen, the touch screen is configured to receive a key-in signal and send the key-in signal to the terminal, and the terminal drives and outputs a control signal according to the key-in signal;
the signal generation unit is configured to communicate with an upper computer through a communication protocol and receive the control signal, and the signal generation unit adjusts the amplitude and/or the phase of the output first three-way analog small signal and second three-way analog small signal according to the control signal;
a three-phase current output unit configured to be coupled to the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to a primary device according to the first three-way analog small signal;
a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to a primary device according to the second three-way analog small signal;
a mobile platform configured to internally integrate the signal generation unit, the three-phase current output unit, the three-phase voltage output unit, and the terminal, and externally configured to be mounted with three current terminals respectively coupled with a three-phase large current, three voltage terminals respectively coupled with a three-phase high voltage, and the touch screen.
10. A relay protection test system is characterized in that,
the system comprises:
the signal generating unit is configured to adjust amplitude and/or phase and output a first three-way analog small signal and a second three-way analog small signal;
a three-phase current output unit configured to be coupled to the signal generation unit and receive the first three-way analog small signal, and output a three-phase large current to a primary device according to the first three-way analog small signal;
a three-phase voltage output unit configured to be coupled with the signal generation unit and receive the second three-way analog small signal, and output a three-phase high voltage to a primary device according to the second three-way analog small signal;
a current transformer configured to be coupled to a secondary device;
a voltage transformer configured to be coupled to a secondary device;
a relay protection device coupled to the current transformer and the voltage transformer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812575A (en) * | 2020-07-20 | 2020-10-23 | 广东电网有限责任公司电力调度控制中心 | Equivalent simulation method of small-range current transformer |
| CN112904119A (en) * | 2021-01-21 | 2021-06-04 | 广东电网能源发展有限公司 | Relay protection testing device and method thereof |
-
2019
- 2019-02-21 CN CN201920220838.XU patent/CN210604807U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812575A (en) * | 2020-07-20 | 2020-10-23 | 广东电网有限责任公司电力调度控制中心 | Equivalent simulation method of small-range current transformer |
| CN111812575B (en) * | 2020-07-20 | 2023-07-21 | 广东电网有限责任公司电力调度控制中心 | Equivalent simulation method for small-range current transformer |
| CN112904119A (en) * | 2021-01-21 | 2021-06-04 | 广东电网能源发展有限公司 | Relay protection testing device and method thereof |
| CN112904119B (en) * | 2021-01-21 | 2022-03-11 | 广东电网能源发展有限公司 | Relay protection testing device and method thereof |
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Granted publication date: 20200522 |