CN217007513U - Wind-powered electricity generation field fault simulation device - Google Patents
Wind-powered electricity generation field fault simulation device Download PDFInfo
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- CN217007513U CN217007513U CN202122968974.7U CN202122968974U CN217007513U CN 217007513 U CN217007513 U CN 217007513U CN 202122968974 U CN202122968974 U CN 202122968974U CN 217007513 U CN217007513 U CN 217007513U
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Abstract
The utility model belongs to the technical field of dynamic reactive compensation tests, and particularly relates to a fault simulation device for a wind power plant; the technical scheme adopted is as follows: the fault simulation device comprises a fault simulation device body, a dynamic reactive compensation module and a connecting transformer, wherein the fault simulation device body is connected with the dynamic reactive compensation module through a voltage output channel and a reactive feedback channel, one side of the connecting transformer is connected with the dynamic reactive compensation module, the other side of the connecting transformer is connected with a main transformer through a wind power low-voltage side bus, and the main transformer is connected with a wind power plant high-voltage side bus; and the fault simulation device body is sequentially provided with a voltage setting item, a voltage step quantity setting item and a control target bus short-circuit capacity setting item which are controlled by the control circuit.
Description
Technical Field
The utility model belongs to the technical field of dynamic reactive compensation tests, and particularly relates to a fault simulation device for a wind power plant.
Background
In the development process of new energy in China, a large-area grid disconnection accident of a wind power plant occurs for many times, great influence is brought to safe and stable operation of a power grid, and after a key cause fault causing the accident is removed, the voltage of a system cannot be quickly responded to and adjusted to a reasonable range by a dynamic reactive power compensation device, so that the safe and stable operation of the power grid puts new requirements on the performance of the dynamic reactive power compensation device of the wind power plant, the anti-accident measure key points of the wind power grid-connected operation are set according to national power grid companies, the response time of the anti-accident measure key points should not exceed 30ms, and the voltage response time is defined as the time from the voltage disturbance reaching a threshold value to the time that the output of the dynamic reactive power compensation device reaches 90% of the stable output.
At present, in a fault response speed test of a dynamic reactive power compensation device, two methods are mainly used for simulating a fault dynamic process of a wind power plant: the first method is a primary system side model disturbance method; the method generally simulates the voltage lifting fault of the wind power plant by switching a fixed capacitor or a collector wire or instantly outputting power by using other dynamic reactive power compensation devices, and defines the response time by detecting the voltage of a system and the output reactive power of the device, however, some wind power plants are not provided with the fixed capacitor, or because the circuit breaker is unreasonably configured, the aim cannot be achieved by switching the fixed capacitor group, the method of switching the collector wire needs to stop a fan, switch off the collector wire, influence the generated energy of the wind power plant, and cause the waste of clean energy, and because the excitation surge current process of the fan box is utilized by the collector wire, the simulation fault duration is not long, and the stable state after the dynamic reactive power compensation device responds cannot be detected; the second method is a secondary system side model disturbance method; in the method, the dynamic signal is scrambled in a secondary loop accessed by the dynamic reactive power compensation device, and the method is used for simulating the fault and cannot reflect the effects of reactive power compensation on voltage fault recovery and the like.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects in the prior art and provides a wind power plant fault simulation device.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a wind power plant fault simulation device is characterized by comprising a fault simulation device body, a dynamic reactive compensation module and a connecting transformer, wherein the fault simulation device body is connected with the dynamic reactive compensation module through a voltage output channel and a reactive feedback channel;
and the fault simulation device body is sequentially provided with a voltage setting item, a voltage step quantity setting item and a control target bus short-circuit capacity setting item which are controlled by the control circuit.
The control circuit comprises a voltage generation module, a reactive compensation feedback voltage change module and an accumulator module, wherein the voltage generation module and the reactive compensation feedback voltage change module are respectively connected with the accumulator module and transmit voltage to the accumulator module.
The voltage generation module is connected with the voltage setting item and the voltage step value setting item, and the reactive compensation feedback voltage change module is used for receiving data information of the control target bus short-circuit capacity setting item.
The accumulator module is used for linearly superposing the voltages of the voltage generation module and the reactive compensation feedback voltage change module and transmitting the voltages to the dynamic reactive compensation module through a voltage output channel.
And the dynamic reactive compensation module is connected with the reactive compensation feedback voltage change module through a reactive feedback channel.
The fault simulation device body further comprises a touch screen, and a control button is arranged on the touch screen.
A test method of a wind power plant fault simulation device specifically comprises the following steps:
s1: setting an upper limit and a lower limit of a control target voltage aiming at the dynamic reactive power compensation module to form a voltage qualified interval, and setting output reactive power as zero or a minimum value close to zero under a dead zone;
s2: setting a voltage fixed value A for a voltage setting item and setting a step fixed value A for a voltage step quantity setting item;
s3: accumulating the voltage fixed value A and the step fixed value A to obtain a voltage signal A, and when the voltage signal A exceeds the voltage qualified interval in the step S1, operating the dynamic reactive power compensation module; when the step fixed value A is regular, the voltage exceeds the upper limit of the voltage, and when the step fixed value A is negative, the voltage exceeds the lower limit of the voltage;
S4: the starting and stopping of the fault simulation device can be controlled by the control button; the voltage generation module outputs the step fixed value A in the step S3, the reactive compensation feedback voltage change module outputs zero, and the voltage signal A can simulate the voltage rise and fall fault of the wind power plant;
s5: the dynamic reactive compensation module is used for calculating the compensation voltage amount through a reactive compensation feedback voltage change module; compensation voltage = reactive output of the dynamic reactive compensation module/short-circuit capacity of the control target bus short-circuit capacity setting item;
s6: the compensation voltage quantity is superposed with the voltage of the voltage generation module, and the voltage is output through a voltage output channel and is used as a voltage detection signal of the dynamic reactive power compensation module; and the output of the dynamic reactive compensation module is stable.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model effectively solves the problem that the secondary side simulation disturbance method can not embody the compensation effect of reactive compensation on the voltage lifting fault, enriches the detection method and provides more choices for the detection of the response time of the dynamic reactive compensation device.
2. According to the method, the voltage lifting fault of the wind power plant is simulated through the data information in the voltage setting item and the voltage step quantity setting item, the wind power plant is simply modeled through the reactive compensation feedback voltage change module, the working state of the electric power facility is strengthened, and the safe and stable operation of the equipment is ensured.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of a control circuit according to the present invention.
In the figure: the system comprises a wind power plant high-voltage side bus, a main transformer, a wind power low-voltage side bus, a connecting transformer, a dynamic reactive compensation module, a fault simulation device body, a touch screen, a voltage setting item, a voltage step value setting item, a control target bus short-circuit capacity setting item, a control button, a voltage output channel, a reactive feedback channel, a control circuit, a voltage generation module, a reactive compensation feedback voltage change module and an accumulator module, wherein the 1 is a wind power plant high-voltage side bus, the 2 is a main transformer, the 3 is a wind power low-voltage side bus, the 4 is a connecting transformer, the 5 is a dynamic reactive compensation module, the 6 is a fault simulation device body, the 7 is a touch screen, the 8 is a voltage setting item, the 9 is a voltage step value setting item, the 10 is a control target bus short-circuit capacity setting item, the 11 is a control button, the 12 is a voltage output channel, the 13 is a reactive feedback channel, the 14 is a control circuit, the 15 is a voltage generation module, the 16 is a reactive compensation feedback voltage change module, and the 17 is an accumulator module.
Detailed Description
As shown in the figure, the wind power plant fault simulation device comprises a fault simulation device body 6, a dynamic reactive power compensation module 5 and a connecting transformer 4, wherein the fault simulation device body 6 is connected with the dynamic reactive power compensation module 5 through a voltage output channel 12 and a reactive power feedback channel 13, one side of the connecting transformer 4 is connected with the dynamic reactive power compensation module 5, the other side of the connecting transformer 4 is connected with a main transformer 2 through a wind power low-voltage side bus 3, and a wind power plant high-voltage side bus 1 is connected to the main transformer 2;
The fault simulation device body 6 is sequentially provided with a voltage setting item 8, a voltage step quantity setting item 9 and a control target bus short-circuit capacity setting item 10 which are controlled by a control circuit 14.
Preferably, the control circuit 14 includes a voltage generation module 15, a reactive compensation feedback voltage variation module 16 and an accumulator module 17, where the voltage generation module 15 and the reactive compensation feedback voltage variation module 16 are respectively connected to the accumulator module 17, and transmit voltage to the accumulator module 17.
Preferably, the voltage generation module 15 is connected to the voltage setting item 8 and the voltage step amount setting item 9, and the reactive compensation feedback voltage variation module 16 is configured to receive data information of the control target bus short-circuit capacity setting item 10.
Preferably, the accumulator module 17 is configured to linearly add the voltages of the voltage generation module 15 and the reactive compensation feedback voltage variation module 16, and transmit the voltage to the dynamic reactive compensation module 5 through the voltage output channel 12.
Preferably, the dynamic reactive power compensation module 5 is connected to the reactive power compensation feedback voltage variation module 16 through the reactive power feedback channel 13.
Preferably, the fault simulation device body 6 further comprises a touch screen 7, and a control button 11 is arranged on the touch screen 7.
The voltage generation module 15 receives a voltage fixed value A in the voltage setting item 8 and a step fixed value A in the voltage step amount setting item, and simulates the voltage rise and fall fault of the wind power plant by taking the voltage fixed value A as a reference and the step fixed value A as a step amount; the reactive compensation feedback voltage change module 16 receives data information in the control target bus short-circuit capacity setting item 10, receives the reactive compensation quantity of the dynamic reactive compensation module 5 through the reactive feedback channel 13, performs simple modeling on the wind power plant, and calculates a voltage change value caused by the reactive compensation quantity; the voltage generated by the voltage generation module 15 and the voltage generated by the reactive compensation feedback voltage variation module 16 are linearly superposed to be used as the output quantity of the voltage output channel 12, and then used as the control target voltage of the dynamic reactive compensation module 5.
The above embodiments are merely illustrative of the principles of the present invention and its effects, and do not limit the present invention. It will be apparent to those skilled in the art that modifications and variations can be made in the above-described embodiments without departing from the spirit or scope of the utility model. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The wind power plant fault simulation device is characterized by comprising a fault simulation device body (6), a dynamic reactive compensation module (5) and a connecting transformer (4), wherein the fault simulation device body (6) is connected with the dynamic reactive compensation module (5) through a voltage output channel (12) and a reactive feedback channel (13), one side of the connecting transformer (4) is connected with the dynamic reactive compensation module (5), the other side of the connecting transformer (4) is connected with a main transformer (2) through a wind power low-voltage side bus (3), and a wind power plant high-voltage side bus (1) is connected to the main transformer (2);
the fault simulation device body (6) is sequentially provided with a voltage setting item (8), a voltage step quantity setting item (9) and a control target bus short-circuit capacity setting item (10) which are controlled by a control circuit (14).
2. A wind farm fault simulation device according to claim 1, characterized in that the control circuit (14) comprises a voltage generation module (15), a reactive compensation feedback voltage variation module (16) and an accumulator module (17), the voltage generation module (15) and the reactive compensation feedback voltage variation module (16) being connected to the accumulator module (17) respectively, transmitting voltage to the accumulator module (17).
3. A wind farm fault simulation device according to claim 2, characterized in that the voltage generation module (15) is connected with a voltage setting item (8) and a voltage step quantity setting item (9), and the reactive compensation feedback voltage change module (16) is used for receiving data information of a control target bus short-circuit capacity setting item (10).
4. A wind farm fault simulation device according to claim 2 or 3, characterized in that the accumulator module (17) is adapted to linearly add the voltages of the voltage generation module (15) and the reactive compensation feedback voltage variation module (16) and to transmit them to the dynamic reactive compensation module (5) via the voltage output channel (12).
5. A wind farm fault simulation device according to claim 4, characterized in that the dynamic reactive compensation module (5) is connected with a reactive compensation feedback voltage variation module (16) through a reactive feedback channel (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122968974.7U CN217007513U (en) | 2021-11-30 | 2021-11-30 | Wind-powered electricity generation field fault simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122968974.7U CN217007513U (en) | 2021-11-30 | 2021-11-30 | Wind-powered electricity generation field fault simulation device |
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| Publication Number | Publication Date |
|---|---|
| CN217007513U true CN217007513U (en) | 2022-07-19 |
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| CN202122968974.7U Active CN217007513U (en) | 2021-11-30 | 2021-11-30 | Wind-powered electricity generation field fault simulation device |
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| CN (1) | CN217007513U (en) |
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2021
- 2021-11-30 CN CN202122968974.7U patent/CN217007513U/en active Active
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