A distributed wind power grid-connected power quality detection platform

Abstract

The utility model provides a kind of dispersed wind power grid-connected electric energy quality detection platform, belong to detection platform field, including grid-connected device, the interface is cooperatively arranged on the upper surface of grid-connected device, the clamping assembly is cooperatively clamped in the upper end of grid-connected device, the detection assembly is cooperatively arranged in the center lower side of clamping assembly, forwardly pull panel to make it slide forward in through slot, drive the sliding of side plate in side slot, extrude spring rod to make it contract, horizontally pull slide plate to make it slide in sliding slot, under the limit of limit plate embedded in limit slot, it can drive detection butt joint to move horizontally stable to the upper side of interface that needs to be detected, loosen the pulling force to panel, spring rod pushes back side plate to make it drive panel to insert into aligned slot, it can complete the fixation to panel, to detect butt joint and interface alignment insertion to detect, improve the adjustment convenience of detection device.

Description

Technical Field

[0001] This utility model relates to the field of testing platforms, and more specifically, to a distributed wind power grid-connected power quality testing platform. Background Technology

[0002] Large-scale photovoltaic (PV) power plants, as part of the traditional power system, are connected to the grid via inverters and are subject to dispatch by the State Grid Corporation of China, participating in voltage and power regulation. PV power plants connect to the grid through power electronic devices such as inverters. In the event of a grid fault, the inverter should disconnect from the grid within a specified time frame according to national regulations, and reconnect within the same time frame when the grid is restored. The accuracy of the inverter's operation affects the normal operation of the grid. Distributed PV power generation systems, however, are not subject to dispatch by the State Grid Corporation of China, and their installation location and capacity are unpredictable. Large-scale grid connection of such systems can affect the stable operation of the grid and cause power quality problems. Therefore, the state has issued technical specifications, and the State Grid Corporation of China has also issued testing procedures for PV power generation systems connected to the grid, stipulating that PV power generation systems must pass testing and meet standards before being connected to the grid.

[0003] A search revealed that Chinese patent CN205067629U discloses a "Distributed Power Source Power Quality Detection Data and Voltage Detection Platform," which includes a plant terminal device. This plant terminal device communicates with the distributed power source monitoring master station via a communication network or sequentially via a communication network and a distributed power source monitoring substation. This device avoids the shortcomings of existing technologies, such as the inability to detect the power quality and voltage of distributed power sources for collecting power quality data and detecting voltage, the inability to prevent circuit overheating, and the difficulty in moving the enclosure. However, it still has the following drawbacks:

[0004] (1) The existing testing equipment has a fixed size, which makes it inconvenient to quickly and relatively fix grid-connected devices of different sizes for stable testing. It requires the use of external fixing devices to fix them with different models of grid-connected devices, which reduces the versatility of the testing equipment.

[0005] (2) The existing testing device requires connecting it to the grid-connector port to perform the test. However, when connecting the interfaces at different locations of the grid-connector, different lengths of wires are required to complete the connection. Since the position of the wire base is fixed and the wire length cannot be adjusted, the test device needs to be manually moved to the grid-connector port to plug in the wires of fixed length, which reduces the convenience of the test.

[0006] Therefore, we have made improvements to this by proposing a distributed wind power grid-connected power quality testing platform. Utility Model Content

[0007] The purpose of this invention is to address the problem that existing testing devices have fixed dimensions, making it inconvenient to quickly and stably test grid-connected devices of different sizes. They require external fixing devices to secure them to different models of grid-connected devices, reducing the versatility of the testing device. Furthermore, existing testing devices require connection to the grid-connected device port for testing, but different lengths of wiring are needed to connect to different interfaces on the grid-connected device. Since the wiring base is fixed and the wiring length cannot be adjusted, the testing device must be manually moved to the grid-connected device port to insert the fixed-length wiring, further reducing the convenience of testing.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] A distributed wind power grid-connected power quality testing platform is proposed to improve the above-mentioned problems.

[0010] The present invention is as follows:

[0011] The device includes a grid-connected unit, an interface is provided on the upper surface of the grid-connected unit, a clamping component is clamped on the upper end of the grid-connected unit, and a detection component is provided on the lower center of the clamping component.

[0012] The clamping assembly includes a detector disposed on the upper exterior of the grid-connected device. A central groove is provided inside the center of the detector. A first bevel gear is provided on the inner wall of the front end of the central groove. A knob is connected to the front end of the first bevel gear. Second bevel gears that cooperate with the first bevel gear are provided on the inner walls of both sides of the central groove.

[0013] The detection assembly includes a base plate that is fitted to the lower surface of the detector. A groove is provided on the front surface of the base plate, and a sliding plate is slidably disposed inside the groove.

[0014] As a preferred technical solution of this utility model, telescopic grooves are provided on both sides of the central groove, a screw is provided inside the telescopic groove, a telescopic plate is fitted on the outer wall of the screw, and a clamping plate is installed on the lower end of the telescopic plate away from the central groove.

[0015] As a preferred technical solution of this utility model, the telescopic groove is provided with side grooves on both the front and rear sides, and the telescopic plate is provided with side plates on both the front and rear sides that cooperate with the side grooves.

[0016] As a preferred technical solution of this utility model, a vertical plate is provided on the lower surface of the front end of the skateboard, and a detection connector that cooperates with the interface is installed on the rear surface of the lower end of the vertical plate.

[0017] As a preferred technical solution of this utility model, the slide plate has a through groove inside, a plate is slidably disposed inside the through groove, and a groove that cooperates with the plate is formed on the rear surface of the slide groove.

[0018] As a preferred technical solution of this utility model, the through groove is provided with side grooves on the upper and lower sides, the panel is provided with side plates on the upper and lower sides that cooperate with the side grooves, and the front surface of the side plate is provided with a spring rod.

[0019] As a preferred technical solution of this utility model, a limiting plate is provided on the upper side of the slide plate, and a limiting groove that cooperates with the limiting plate is provided on the upper side of the slide groove.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the solution of this utility model:

[0022] 1. By using a set of first bevel gear, second bevel gear, screw, telescopic plate, clamping plate, and side plate, when performing power quality testing on grid-connected devices of different sizes and models, turning the knob drives the first bevel gear connected to it to rotate, which in turn drives the second bevel gears on both sides to rotate, which in turn drives the screw connected to it to rotate, and the telescopic plate to slide in the telescopic groove. With the side plate embedded in the side groove, the distance between the two clamping plates can be adjusted so that the detector can be clamped on both sides of grid-connected devices of different sizes, thus improving the versatility of the detector.

[0023] 2. With the included slide plate, detection connector, insert plate, limiting plate, side plate, and spring rod, when electrical energy testing is required for interfaces at different lateral positions, the insert plate is pulled forward to slide forward in the through groove, causing the side plate to slide in the side groove. The spring rod is compressed to retract, and the slide plate is pulled laterally to slide in the slide groove. With the limiting plate embedded in the limiting groove, the detection connector can be moved laterally and stably adjusted to the upper side of the interface to be tested. Releasing the tension on the insert plate causes the spring rod to push the side plate backward, causing the insert plate to insert into the aligned groove, thus fixing the insert plate. This allows the detection connector to be aligned with the interface for testing, improving the ease of adjustment of the testing device. Attached Figure Description

[0024] Figure 1 A frontal view of the overall structure of a distributed wind power grid-connected power quality testing platform provided by this utility model;

[0025] Figure 2 A schematic diagram of the clamping component structure of a distributed wind power grid-connected power quality testing platform provided by this utility model;

[0026] Figure 3A front view schematic diagram of the detection components of a distributed wind power grid-connected power quality detection platform provided by this utility model;

[0027] Figure 4 A partial structural diagram of the detection component of a distributed wind power grid-connected power quality detection platform provided by this utility model.

[0028] The image shows:

[0029] 1. Grid Connector; 2. Interface; 301. Detector; 302. Center Groove; 303. First Bevel Gear; 304. Knob; 305. Second Bevel Gear; 306. Telescopic Groove; 307. Screw; 308. Telescopic Plate; 309. Clamping Plate; 310. Side Groove; 311. Side Plate; 401. Base Plate; 402. Slide Groove; 403. Slide Plate; 404. Vertical Plate; 405. Detection Connector; 406. Through Groove; 407. Insert Plate; 408. Limiting Plate; 409. Side Groove; 410. Side Plate; 411. Spring Rod; 412. Insert Groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] like Figure 1-4 As shown, this embodiment proposes a distributed wind power grid-connected power quality testing platform, including a grid-connected device 1. An interface 2 is provided on the upper surface of the grid-connected device 1. A clamping component is clamped on the upper end of the grid-connected device 1. A testing component is provided on the lower center of the clamping component.

[0035] The clamping assembly includes a detector 301 disposed on the upper exterior of the grid-connected device 1. A central groove 302 is provided inside the center of the detector 301. A first bevel gear 303 is disposed on the inner wall of the front end of the central groove 302. A knob 304 is connected to the front end of the first bevel gear 303. Second bevel gears 305 that cooperate with the first bevel gear 303 are disposed on the inner walls of both sides of the central groove 302.

[0036] The detection assembly includes a base plate 401 that is fitted to the lower surface of the detector 301. A groove 402 is provided on the front surface of the base plate 401, and a slide plate 403 is slidably disposed inside the groove 402.

[0037] like Figure 2 As shown, telescopic grooves 306 are provided on the outer sides of both sides of the central groove 302. A screw 307 is provided inside the telescopic groove 306. A telescopic plate 308 is fitted on the outer wall of the screw 307. A clamping plate 309 is installed on the lower end of the telescopic plate 308 away from the central groove 302. When the screw 307 rotates, it engages and drives the telescopic plate 308 to slide in the telescopic groove 306. With the side plate 311 embedded in the side groove 310, the distance between the clamping plates 309 on both sides can be adjusted so that the detector 301 can be clamped on both sides of the grid-connected device 1 of different sizes.

[0038] like Figure 2 As shown, the telescopic groove 306 has side grooves 310 on both the front and rear sides, and the telescopic plate 308 has side plates 311 on both the front and rear sides that cooperate with the side grooves 310. With the side plates 311 embedded in the side grooves 310, the distance between the two clamping plates 309 can be adjusted so that the detector 301 can be clamped on both sides of the grid-connected device 1 of different sizes, thereby improving the versatility of the detector 301.

[0039] like Figure 3 As shown, a vertical plate 404 is provided on the lower surface of the front end of the slide plate 403. A detection connector 405 that cooperates with the interface 2 is installed on the lower rear surface of the vertical plate 404. The detection connector 405 is aligned with the interface 2 and inserted for detection, which improves the ease of adjustment of the detection device.

[0040] like Figure 3 As shown, the slide plate 403 has a through groove 406 inside, and a panel 407 is slidably disposed inside the through groove 406. The rear surface of the slide groove 402 has a groove 412 that cooperates with the panel 407. The spring rod 411 pushes the side plate 410 backward so that it drives the panel 407 to insert into the aligned groove 412, thereby completing the fixing of the panel 407.

[0041] like Figure 4As shown, the through groove 406 has side grooves 409 on both the upper and lower sides. The insert plate 407 has side plates 410 on both the upper and lower sides that cooperate with the side grooves 409. The front surface of the side plate 410 is provided with a spring rod 411. The side plate 410 slides in the side groove 409, compresses the spring rod 411 to make it contract, and pulls the slide plate 403 laterally so that it slides in the slide groove 402. Under the limitation of the limiting plate 408 embedded in the limiting groove, the detection connector 405 can be moved laterally and stably to the upper side of the interface 2 that needs to be detected. When the tension on the insert plate 407 is released, the spring rod 411 pushes the side plate 410 backward so that the insert plate 407 is inserted into the aligned groove 412.

[0042] like Figure 4 As shown, a limiting plate 408 is provided on the upper side of the slide plate 403, and a limiting groove is provided on the upper side of the slide groove 402 to cooperate with the limiting plate 408. When the limiting plate 408 is embedded in the limiting groove, the detection connector 405 can be moved laterally and stably to the upper side of the interface 2 that needs to be detected.

[0043] Specifically, when using this testing platform: When performing power quality testing on grid-connected devices 1 of different sizes and models, turning the knob 304 rotates the first bevel gear 303 connected to it, which in turn rotates the second bevel gears 305 on both sides, causing the connected screw 307 to rotate. This, in turn, causes the telescopic plate 308 to slide within the telescopic groove 306. With the side plate 311 embedded in the side groove 310, the distance between the two clamping plates 309 is adjusted to clamp the detector 301 on both sides of grid-connected devices 1 of different sizes, improving the versatility of the detector 301. When power quality testing is required on interfaces 2 at different lateral positions, the insert plate 4 is pulled forward. 07 allows it to slide forward within the through groove 406, causing the side plate 410 to slide within the side groove 409. This compresses the spring rod 411, causing it to contract. The slide plate 403 is then pulled laterally to slide within the slide groove 402. With the limiting plate 408 embedded in the limiting groove, the detection connector 405 can be moved laterally and stably adjusted to the upper side of the interface 2 to be tested. The tension on the insert plate 407 is released, and the spring rod 411 pushes the side plate 410 backward, causing the insert plate 407 to be inserted into the aligned groove 412. This completes the fixing of the insert plate 407, thereby aligning the detection connector 405 with the interface 2 for testing. This improves the ease of adjustment of the detection device.

[0044] All technical features in this embodiment can be freely combined according to actual needs.

[0045] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A distributed wind power grid-connected power quality testing platform, comprising a grid-connector (1), characterized in that: The grid-connector (1) has an interface (2) on its upper surface, and a clamping component is clamped on the upper end of the grid-connector (1). A detection component is provided on the lower center of the clamping component. The clamping assembly includes a detector (301) disposed on the upper exterior of the grid-connected device (1). A central groove (302) is provided inside the center of the detector (301). A first bevel gear (303) is provided on the inner wall of the front end of the central groove (302). A knob (304) is connected to the front end of the first bevel gear (303). Second bevel gears (305) that cooperate with the first bevel gear (303) are provided on the inner walls of both sides of the central groove (302). The detection assembly includes a base plate (401) that is fitted to the lower surface of the detector (301). A groove (402) is provided on the front surface of the base plate (401), and a slide plate (403) is slidably disposed inside the groove (402).

2. The distributed wind power grid-connected power quality testing platform according to claim 1, characterized in that, The central groove (302) has telescopic grooves (306) on both sides of the outside. A screw (307) is provided inside the telescopic groove (306). A telescopic plate (308) is fitted on the outer wall of the screw (307). A clamping plate (309) is installed on the lower end of the telescopic plate (308) away from the central groove (302).

3. The distributed wind power grid-connected power quality testing platform according to claim 2, characterized in that, The telescopic groove (306) has side grooves (310) on both the front and rear sides, and the telescopic plate (308) has side plates (311) on both the front and rear sides that cooperate with the side grooves (310).

4. The distributed wind power grid-connected power quality testing platform according to claim 1, characterized in that, A vertical plate (404) is provided on the lower surface of the front end of the slide plate (403), and a detection connector (405) that cooperates with the interface (2) is installed on the lower rear surface of the vertical plate (404).

5. A distributed wind power grid-connected power quality testing platform according to claim 4, characterized in that, The slide plate (403) has a through groove (406) inside, and a panel (407) is slidably disposed inside the through groove (406). The rear surface of the slide groove (402) has a groove (412) that cooperates with the panel (407).

6. The distributed wind power grid-connected power quality testing platform according to claim 5, characterized in that, The through groove (406) has side grooves (409) on both the upper and lower sides. The panel (407) has side plates (410) on both the upper and lower sides that cooperate with the side grooves (409). A spring rod (411) is provided on the front surface of the side plate (410).

7. A distributed wind power grid-connected power quality testing platform according to claim 1, characterized in that, The upper side of the slide plate (403) is provided with a limiting plate (408), and the upper side of the slide groove (402) is provided with a limiting groove that cooperates with the limiting plate (408).

Images