CN217717966U - High-low voltage ride through test system of wind generating set - Google Patents

Abstract

A high-low voltage ride through test system of a wind generating set comprises: the container is provided with a system side interface, a box transformer high-voltage side interface, a primary equipment measurement and control interface and an operation panel; the system comprises a plurality of test units, a plurality of control units and a plurality of control units, wherein each test unit comprises a series structure formed by sequentially connecting a first voltage regulating unit, a second voltage regulating unit and an output on-off component in series, a bypass on-off component connected with the first voltage regulating unit in parallel, and a current detection unit used for detecting current flowing through the series structure, one end of the series structure is connected with a power grid through a system side interface, one end of the bypass on-off component is connected with a tested wind generating set through a box transformer high-voltage side interface, and the bypass on-off component and the output on-off component are connected with an operation panel; the bypass on-off component, the current detection unit and the output on-off component are connected with the primary equipment measurement and control box through the primary equipment measurement and control interface. The test system solves the problems of complex access, high requirement on access accuracy and low safety of test equipment.

Description

High-low voltage ride through test system of wind generating set

Technical Field

The utility model belongs to the wind power generation field, concretely relates to wind generating set high-low voltage passes through test system.

Background

With the continuous increase of the power generation scale and the power generation capacity of the new energy, when a power grid fails, if a new energy station is disconnected with a system, the frequency and the voltage of the power grid cannot be supported during the power grid failure like water and fire energy, the stability of the whole power grid can be affected after the new energy station is disconnected with the power grid, and even cascading failures can be generated, so that the high and low voltage ride through capability of the new energy station needs to be detected.

Taking a variable-speed constant-frequency doubly-fed wind power generator as an example, under the condition of grid voltage drop, because the matched power electronic converter equipment belongs to an AC/DC/AC type, peak inrush current is easily generated on the rotor side of the generator, the converter equipment is damaged, and the wind power generator set is disconnected from a power grid. When the capacity of the wind driven generator is small, the wind driven generator is disconnected from a power grid in order to protect an excitation device on the rotor side. Because the proportion of the wind power generation capacity in the power grid structure is larger and larger, the stability of the whole power grid can be influenced after the wind power generation capacity is disconnected with the power grid, and even cascading failures can be generated. The existing new energy high-low voltage ride through capability detection platform has the defects that a large number of large-scale instruments are used for tests, so that the test equipment is complex to access, the requirement on the access accuracy of testers is extremely high, and the safety is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a wind generating set high-low voltage passes through test system, wind generating set high-low voltage has passed through test system and has solved the test equipment and has inserted complicacy, and is required highly to the access accuracy, problem that the security is low.

According to the utility model discloses wind generating set high-low voltage passes through test system, include:

the system side interface, the box transformer high-voltage side interface and the primary equipment measurement and control interface are arranged on the container, an operation panel is arranged on the outer surface of the container, and the operation panel is connected with a power supply;

the device comprises a plurality of test units, a first voltage regulating unit, a second voltage regulating unit, a current detecting unit and an output on-off component, wherein the test units are all arranged in the container; the first voltage regulating unit, the second voltage regulating unit and the output on-off component are sequentially connected in series to form a series structure, one end of the series structure is connected with a power grid through the system side interface, the other end of the series structure is connected with the ground wire, the first voltage regulating unit and the second voltage regulating unit are both used for sudden rising voltage or sudden falling voltage, the current detecting unit is used for detecting current flowing through the series structure, the bypass on-off component is connected with the first voltage regulating unit in parallel, one end, close to the second voltage regulating unit, of the bypass on-off component is connected with a tested wind generating set through the box transformer high-voltage side interface, the bypass on-off component and the output on-off component are both connected with the operation panel, and the operation panel is used for adjusting on-off states of the bypass component and the output on-off component; the bypass on-off component, the current detection unit and the output on-off component are connected with the primary equipment measurement and control box through the primary equipment measurement and control interface.

According to the utility model discloses wind generating set high-low voltage passes through test system has following technological effect at least: the voltage can be suddenly increased or decreased through the first voltage regulating unit and the second voltage regulating unit, the current flowing through the series connection structure can be detected in real time through the current detecting unit, and the on-off states of the bypass on-off assembly and the output on-off assembly can be controlled through an operation panel on the outer surface of the container so as to perform a high-low voltage ride-through test of the wind generating set. Locate a plurality of test unit in the container, the convenient transportation can insert the electric wire netting through the system side interface on the container, becomes high pressure side interface through the case and can insert by the wind generating set that is surveyed, and the access process is simple. The test points can be connected into the primary equipment measurement and control box through the primary equipment measurement and control interface, so that the test operation is carried out outside the container, and the safety is high. The utility model discloses wind generating set high-low voltage passes through test system has solved the test equipment and has inserted complicacy, requires high to the accuracy of inserting, the low problem of security.

According to some embodiments of the invention, the bypass on-off component is a bypass breaker, the output on-off component is an output breaker; and the closing coil and the tripping coil of the bypass circuit breaker, and the closing coil and the tripping coil of the output circuit breaker are connected with the operation panel.

According to the utility model discloses a some embodiments, operating panel is last to be equipped with:

the first switch assembly is used for adjusting the electrifying state of a closing coil of the bypass breaker;

a second switching assembly for adjusting an energized state of a trip coil of the bypass circuit breaker;

the third switch assembly is used for adjusting the electrifying state of a closing coil of the output circuit breaker;

a fourth switch assembly for adjusting the energization state of the trip coil of the output circuit breaker.

According to some embodiments of the utility model, still including all set up in the container:

the movable contact of the delay relay is used for adjusting the electrifying state of the closing coil of the output circuit breaker; the third switch component is also used for adjusting the power-on state of a coil of the time delay relay and the on-off state of the movable contact; the main contact of the output breaker is in a closed state;

and the voltage relay is connected between the third switch component and the tested wind generating set and used for detecting the three-phase voltage of the high-voltage side of the box transformer substation of the tested wind generating set.

According to the utility model discloses a some embodiments, first voltage regulating unit with second voltage regulating unit all adopts the reactor that steps up.

According to some embodiments of the invention, the first voltage regulating unit and the second voltage regulating unit all employ resistors.

According to the utility model discloses a some embodiments, current detection unit adopts current transformer, current transformer's secondary terminal row passes through primary equipment observes and controls the interface with primary equipment observes and controls the case and connects.

According to some embodiments of the invention, each of the test units further comprises:

a first resistor having one end connected between the second voltage adjusting unit and the current transformer;

and one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is connected with the ground wire.

According to some embodiments of the invention, the container is a totally enclosed box.

According to some embodiments of the utility model, the container surface is equipped with the anticorrosive coating.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a high-low voltage ride through test system of a wind generating set according to an embodiment of the present invention;

fig. 2 is a schematic view of a part of the structure of the operation panel according to the embodiment of the present invention.

Reference numerals are as follows:

container 100, first switch assembly 110, second switch assembly 120, third switch assembly 130, fourth switch assembly 140;

the device comprises a test unit 200, a bypass on-off component 210, a first voltage regulating unit 220, a second voltage regulating unit 230, a current detecting unit 240 and an output on-off component 250.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the directional descriptions, such as the directions of upper, lower, front, rear, left, right, etc., are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

The following describes a high-low voltage ride through test system of a wind generating set according to an embodiment of the present invention with reference to fig. 1 to 2.

According to the utility model discloses wind generating set high-low voltage passes through test system, include container 100 and all locate a plurality of test unit 200 in container 100. The container 100 is provided with a system side interface, a box transformer high-voltage side interface and a primary equipment measurement and control interface, the outer surface of the container 100 is provided with an operation panel, and the operation panel is connected with a power supply; a plurality of test units 200 all disposed in the container 100, each test unit 200 including a bypass on/off assembly 210, a first voltage regulating unit 220, a second voltage regulating unit 230, a current detecting unit 240, and an output on/off assembly 250; the first voltage regulating unit 220, the second voltage regulating unit 230 and the output on-off component 250 are sequentially connected in series to form a series structure, one end of the series structure is connected with a power grid through a system side interface, the other end of the series structure is connected with a ground wire, the first voltage regulating unit 220 and the second voltage regulating unit 230 are both used for suddenly rising voltage or suddenly falling voltage, the current detecting unit 240 is used for detecting current flowing through the series structure, the bypass on-off component 210 is connected with the first voltage regulating unit 220 in parallel, one end, close to the second voltage regulating unit 230, of the bypass on-off component 210 is connected with a tested wind generating set through a box transformer high-voltage side interface, the bypass on-off component 210 and the output on-off component 250 are both connected with an operation panel, and the operation panel is used for adjusting the on-off states of the bypass on-off component 210 and the output on-off component 250; the bypass on-off component 210, the current detection unit 240 and the output on-off component 250 are all connected with the primary equipment measurement and control box through the primary equipment measurement and control interface.

Fig. 1 is the utility model discloses wind generating set high-low voltage passes through test system's schematic structure, is equipped with system side interface, case and becomes high-pressure side interface and primary equipment observing and controlling interface on the container 100. Be provided with a plurality of test unit 200 in the container 100, a plurality of test unit 200 are used for carrying out wind generating set high-low voltage and pass through the test, and a plurality of detecting element in the container 100 are for assembling in advance, and adopt container 100 interior concentrated equipment integral type conveniently to transport, only need with electric wire netting access system side interface before experimental, will be surveyed wind generating set access box become high voltage side interface can, the access process is simple. A plurality of test points in a plurality of test units 200 are all accessed to a primary equipment test and control box through a primary equipment test and control interface, the operation and control processes are all carried out outside the container 100, and the safety is high. As shown in fig. 1, a primary device secondary terminal box is arranged on the container 100, and the secondary terminal strip of the current detection unit 240, the bypass on-off component 210 and the breaker position signal terminal strip of the output on-off component 250 are connected with the primary device measurement and control interface through the primary device secondary terminal box, so that the messy circuit is avoided, and convenience is brought to testers to carry out data acquisition.

The outer surface of the container 100 is further provided with an operation panel, the on-off states of the bypass on-off component 210 and the output on-off component 250 are adjusted through the operation panel, so that a high-low voltage ride-through test of the wind generating set is performed, the bypass on-off component 210 is adjusted to be in an on-state, a power grid supplies power to the plurality of test units 200 through a system side interface, the tested wind generating set operates normally to achieve grid connection, the output on-off component 250 is adjusted to be in an on-state, a primary equipment test and control box samples the plurality of test points to obtain current signals detected by the current detection unit 240 and position signals of the bypass on-off component 210 and the output on-off component 250, the bypass on-off component 210 is adjusted to be in an off-state, sampling is completed, a tester analyzes the high-low voltage ride-through capability of the tested wind generating set according to the current signals detected by the current detection unit 240 and the position signals of the bypass on-off component 210 and the output on-off component 250, the output on-off component 250 is adjusted to be in an off-state, power failure recovery state, and the test is finished. The whole operation process is realized outside the container 100, and the safety is high.

Here, it should be noted that a specific analysis process and method for analyzing the high-low voltage ride through capability of the wind turbine generator system to be tested according to the current signal detected by the current detection unit 240 and the position signals of the bypass on-off component 210 and the output on-off component 250 are known to those skilled in the art, and are not described herein again. The plurality of bypass switching elements 210 and the plurality of output switching elements 250 in the plurality of test cells 200 are all turned on and off simultaneously. In addition, the power that operating panel connects both can be external power source, also can be for being given operating panel power supply as the power after overvoltage transformation for measuring wind generating set's three-phase voltage, can not regard as right the utility model discloses a it is right to restrict.

In some embodiments, the number of the test units 200 is 3, and the test units are connected to the three-phase voltage of the tested wind turbine generator set, but the number of the test units 200 is not considered as a limitation of the present invention.

According to the utility model discloses wind generating set high-low voltage passes through test system, can the sudden rise voltage or the sudden drop voltage through first voltage regulating unit 220 and second voltage regulating unit 230, can the real-time detection through current detection unit 240 and flow through the electric current of series connection structure, the operating panel through the surface of container 100 can control bypass on-off subassembly 210 and output on-off subassembly 250's on-off state to carry out wind generating set high-low voltage and pass through the test experiment. A plurality of test units 200 are arranged in the container 100, the transportation is convenient, a power grid can be accessed through a system side interface on the container 100, a tested wind generating set can be accessed through a box transformer substation high-voltage side interface, and the access process is simple. The test points can be connected into the primary equipment test and control box through the primary equipment test and control interface, so that test operation is carried out outside the container 100, and the safety is high. The utility model discloses wind generating set high-low voltage passes through test system has solved the test equipment and has inserted complicacy, and is required highly to the accuracy of inserting, the low problem of security.

In some embodiments of the present invention, referring to fig. 1, the bypass on-off assembly 210 is a bypass breaker and the output on-off assembly 250 is an output breaker; closing coil KH1 and tripping coil KT1 of bypass circuit breaker to and closing coil KH2A and tripping coil KT2 of output circuit breaker all are connected with operating panel. The closing coil KH1 and the tripping coil KT1 of the bypass circuit breaker and the closing coil KH2A and the tripping coil KT2 of the output circuit breaker are connected with an operation panel through leads, so that the bypass circuit breaker and the output circuit breaker can be controlled more conveniently to be switched on and switched off, and a high-low voltage ride-through test of the wind generating set can be better carried out. It should be noted that the circuit breaker is a commonly used on-off assembly, and other on-off assemblies can be used, which cannot be regarded as a limitation of the present invention. In addition, the working principle of the circuit breaker is the prior art known to those skilled in the art, and is not described herein in detail.

In some embodiments of the present invention, referring to fig. 2, the first switch assembly 110, the second switch assembly 120, the third switch assembly 130 and the fourth switch assembly 140 are disposed on the operation panel. A first switching assembly 110 for adjusting an energization state of a closing coil KH1 of the bypass breaker; a second switching assembly 120 for adjusting the energized state of the trip coil KT1 of the bypass breaker; a third switching assembly 130 for adjusting an energization state of a closing coil KH2A of the output breaker; and a fourth switching assembly 140 for adjusting the energization state of the trip coil KT2 of the output breaker. Before the test starts, after the equipment inspection and the measurement process are correct, the first switch assembly 110 is closed, a closing coil KH1 of a bypass breaker is electrified, the bypass breaker is in a closed state, a power grid supplies power to the plurality of test units 200 through a system side interface, the tested wind generating set operates normally to realize grid connection, the third switch assembly 130 is closed, a closing coil KH2A of the output breaker is electrified, the output breaker is in a closed state, a primary equipment test and control box samples the plurality of test points to obtain current signals detected by the current detection unit 240 and position signals of the bypass breaker and the output breaker, the second switch assembly 120 is closed, a tripping coil KT1 of the bypass breaker is electrified, the bypass breaker is in an open state, the sampling is completed, a tester analyzes the high-low voltage ride-through capability of the tested wind generating set according to the current signals detected by the current detection unit 240 and the position signals of the bypass breaker and the output breaker, the tripping coil KT2 of the output breaker is electrified, the output breaker is in an open state, the power failure recovery is realized, and the test is finished. Correspond the combined floodgate coil KH1 and the tripping coil KT1 of bypass circuit breaker respectively to and the combined floodgate coil KH2A and the tripping coil KT2 of output circuit breaker set up 4 switch components, can more conveniently control the break-make of bypass circuit breaker and output circuit breaker.

The first switch assembly 110, the second switch assembly 120 and the fourth switch assembly 140 all adopt buttons, the third switch assembly 130 adopts a pressing plate, the buttons are commonly used switch assemblies, and the pressing plate adopted by the third switch assembly 130 is used for connecting the movable contact KTB of the time delay relay. It should be noted that other switch assemblies may be used, and should not be construed as limiting the present invention. In addition, the working principle of the button and the pressing plate is known to those skilled in the art, and will not be described herein.

In some embodiments of the present invention, referring to fig. 2, a time delay relay and a voltage relay KV both disposed in the container 100 are also included. A time delay relay, the movable contact KTB of which is used for adjusting the electrifying state of a closing coil KH2A of the output breaker; the third switch component 130 is further configured to adjust an energization state of a coil KTA of the delay relay and an on-off state of the make-and-break contact KTB; the main contact KH2B of the output breaker is in a closed state; and the voltage relay KV is connected between the third switch assembly 130 and the tested wind generating set and used for detecting the three-phase voltage of the high-voltage side of the box transformer substation of the tested wind generating set. The main contact KH2B of the output circuit breaker is in a closed state, after the third switch assembly 130 is closed, the coil KTA of the delay relay is electrified, the movable contact KTB of the delay relay is closed, the closing coil KH2A of the output circuit breaker is electrified, the output circuit breaker is in a closed state, voltage is inhibited from being abnormal after the bypass circuit breaker is tripped, and line impact is reduced. The voltage relay KV can detect the three-phase voltage at the high-voltage side of the box transformer substation of the tested wind generating set, so as to play a role of protection, and the working principle thereof is the prior art known by those skilled in the art, and is not described herein again.

In some embodiments of the present invention, referring to fig. 1, the first voltage regulating unit 220 and the second voltage regulating unit 230 both employ a boost reactor. The boost reactor is adopted to adjust the voltage shock rise, a high voltage ride through test of the wind generating set can be carried out, and the working principle of the boost reactor is the prior art known by the technical personnel in the field and is not described herein.

In some embodiments of the present invention, the first voltage regulating unit 220 and the second voltage regulating unit 230 both employ resistors. The resistor is adopted to adjust the voltage dip, so that a low voltage ride through test of the wind generating set can be performed, and the working principle of the resistor is the prior art known by the person skilled in the art and is not described herein in detail.

In some embodiments of the utility model, referring to fig. 1, current detection unit 240 adopts current transformer, and current transformer's secondary terminal row is connected with primary equipment measurement and control box through primary equipment measurement and control interface. The current transformer can monitor the current of the boost reactor in the operation process in real time, and the current is transmitted to the primary equipment monitoring and controlling box through the secondary terminal strip of the current transformer, so that the follow-up data analysis is facilitated. The current transformer can detect the current in the cable, and the working principle thereof is the prior art known by those skilled in the art, and is not described herein in detail.

In some embodiments of the present invention, referring to fig. 1, each test unit 200 further includes a first resistor R1 and a first capacitor C1. A first resistor R1 having one end connected between the second voltage regulating unit 230 and the current transformer; and one end of the first capacitor C1 is connected with the other end of the first resistor R1, and the other end of the first capacitor C1 is connected with the ground wire. The first resistor R1 and the first capacitor C1 are connected in series, so that voltage sudden change can be prevented, and a circuit is protected.

In some embodiments of the present invention, the container 100 is a fully enclosed box. The part in the container 100 is a plurality of test units 200, and before the test, only a power grid needs to be connected into a system side interface, and a tested wind generating set is connected into a box transformer high-voltage side interface, and in the test process, a test point is connected into a primary equipment measurement and control box through a primary equipment measurement and control interface, so that the operation and control are carried out outside the container 100, and the container 100 is a fully-closed box body and can prevent high-voltage electric shock during the test, and the safety is high.

In some embodiments of the present invention, the outer surface of the container 100 is provided with an anti-corrosion layer. The outer surface of the container 100 is provided with an anticorrosive layer, which can effectively prolong the service life of the container 100, and the specific anticorrosive material is not limited herein.

In some embodiments of the present invention, the size of the container 100 is 6m x 2.5m x 2.6m, but the specific size cannot be considered as a limitation of the present invention.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A wind generating set high-low voltage ride through test system is characterized by comprising:

the container (100) is provided with a system side interface, a box transformer substation high-voltage side interface and a primary equipment measurement and control interface, an operation panel is arranged on the outer surface of the container (100), and the operation panel is connected with a power supply;

the system comprises a plurality of test units (200) which are all arranged in a container (100), wherein each test unit (200) comprises a bypass on-off assembly (210), a first voltage regulating unit (220), a second voltage regulating unit (230), a current detecting unit (240) and an output on-off assembly (250); the first voltage regulating unit (220), the second voltage regulating unit (230) and the output on-off component (250) are sequentially connected in series to form a series structure, one end of the series structure is connected with a power grid through the system side interface, the other end of the series structure is connected with the ground wire, the first voltage regulating unit (220) and the second voltage regulating unit (230) are both used for suddenly rising voltage or suddenly falling voltage, the current detecting unit (240) is used for detecting current flowing through the series structure, the bypass on-off component (210) is connected with the first voltage regulating unit (220) in parallel, one end, close to the second voltage regulating unit (230), of the bypass on-off component (210) is connected with a tested wind generating set through the box transformer high-voltage side interface, the bypass on-off component (210) and the output on-off component (250) are both connected with the operation panel, and the operation panel is used for adjusting on-off states of the bypass on-off component (210) and the output on-off component (250); the bypass on-off component (210), the current detection unit (240) and the output on-off component (250) are connected with the primary equipment measurement and control box through the primary equipment measurement and control interface.

2. The wind generating set high and low voltage ride through test system of claim 1, wherein the bypass switching assembly (210) is a bypass breaker and the output switching assembly (250) is an output breaker; and the closing coil and the tripping coil of the bypass circuit breaker, and the closing coil and the tripping coil of the output circuit breaker are connected with the operation panel.

3. The wind generating set high-low voltage ride through test system of claim 2, wherein the operating panel is provided with:

a first switching assembly (110) for adjusting an energized state of a closing coil of the bypass breaker;

a second switching assembly (120) for adjusting an energized state of a trip coil of the bypass circuit breaker;

a third switching assembly (130) for adjusting an energized state of a closing coil of the output breaker;

a fourth switch assembly (140) for adjusting the energized state of the trip coil of the output circuit breaker.

4. The wind generating set high-low voltage ride through test system according to claim 3, further comprising:

the movable contact of the delay relay is used for adjusting the electrifying state of the closing coil of the output circuit breaker; the third switch component (130) is also used for adjusting the electrifying state of a coil of the time delay relay and the on-off state of the movable contact; the main contact of the output breaker is in a closed state;

and the voltage relay is connected between the third switch component (130) and the tested wind generating set and is used for detecting the three-phase voltage of the high-voltage side of the box transformer substation of the tested wind generating set.

5. The wind generating set high-low voltage ride through test system according to claim 1, wherein the first voltage regulating unit (220) and the second voltage regulating unit (230) both employ a boost reactor.

6. The wind turbine generator system high-low voltage ride through test system according to claim 1, wherein the first voltage regulating unit (220) and the second voltage regulating unit (230) both employ resistors.

7. The wind generating set high-low voltage ride-through test system according to claim 1, wherein the current detection unit (240) adopts a current transformer, and a secondary terminal row of the current transformer is connected with the primary equipment measurement and control box through the primary equipment measurement and control interface.

8. Wind park high and low voltage ride through test system according to claim 7, wherein each of said test units (200) further comprises:

a first resistor having one end connected between the second voltage adjusting unit (230) and the current transformer;

and one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is connected with the ground wire.

9. The wind generating set high and low voltage ride through test system of claim 1, wherein the container (100) is a fully enclosed box.

10. The wind generating set high and low voltage ride through test system of claim 1, wherein an outer surface of the container (100) is provided with an anti-corrosion layer.

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