CN217717920U

CN217717920U - On-line monitoring equipment for insulation resistance of wind driven generator

Info

Publication number: CN217717920U
Application number: CN202221710950.XU
Authority: CN
Inventors: 沈晓贤; 宋志平; 郑元华
Original assignee: JIANGSU HNP ELECTRIC TECHNOLOGY CO LTD
Current assignee: JIANGSU HNP ELECTRIC TECHNOLOGY CO LTD
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-11-01
Anticipated expiration: 2032-07-05

Abstract

The utility model relates to a monitoring facilities technical field especially relates to an aerogenerator insulation resistance on-line monitoring equipment, including first support frame, first support frame top is connected with the second support frame, and second support frame top connection installs the controller, controller top fixed mounting has the LCD screen, and has sealing door through hinge connection on one side of the controller, manual test button is installed in the connection of controller one side, the opposite side of controller is connected with three group's connecting wires, and connecting wire one end is connected with 1Y winding, 2Y winding and generator respectively. The utility model discloses, can monitor work according to the output condition of generator is automatic, can in time discover the problem, be convenient for maintain work such as.

Description

On-line monitoring equipment for insulation resistance of wind driven generator

Technical Field

The utility model relates to a monitoring facilities technical field especially relates to a aerogenerator insulation resistance on-line monitoring equipment.

Background

With the continuous popularization and application of clean energy sources such as solar energy, wind energy, tidal energy, biological energy and other renewable energy sources, particularly the continuous maturity of wind energy technology, the economic feasibility value is higher, and the energy source is an ideal development energy source. Compared with other energy sources, the wind energy has the obvious advantages that: the energy is huge in accumulation amount, wide in distribution and free of pollution, and is an inexhaustible renewable energy source; the wind power generation has no fuel problem, and cannot generate radiation or carbon dioxide pollution, and cannot generate radiation or air pollution; also, wind instruments are far cheaper than solar instruments from an economic point of view. China has large wind energy storage capacity and wide distribution range, even is richer than water energy. The wind energy is reasonably utilized, thereby not only reducing the environmental pollution, but also reducing the pressure of more and more energy shortage. From the current technical maturity and economic feasibility, the wind energy is most competitive, from the middle stage, the prospect of the global wind energy industry is quite optimistic, and the renewable energy encouragement policy continuously issued by governments of various countries provides huge power for the rapid development of the industry in the coming years. According to expectations, asia and america will become the most growing potential areas in the coming years. The installed wind power capacity in China will achieve a high growth rate of 30% per year. Therefore, the prospect of wind power generation is very large, and the investment quantity of wind power equipment is also very large.

Because the kinetic energy of wind power generation is wind, and wind energy equipment is all installed on open fields or shallow sea level, the generator will stop operation when no wind power exists, the generator equipment will be cooled gradually by heat, the equipment is most easily corroded, damaged and destroyed by erosion from humidity and salt corrosion at the moment, the insulation value of the generator equipment is seriously reduced, even the insulation resistance value of the ground is reduced to zero ohm, if the generator is started to operate forcibly when wind comes at the moment, property losses such as burning of the main equipment of the generator can be caused.

Because wind power generation is still in the development stage, the insulation on-line monitoring equipment for the wind power generator is still incomplete or even is not available, the traditional detection is manual megger detection, the detection is also performed at one time before the equipment is installed and operated, and in the later period, the insulation on-line monitoring equipment for the wind power generator cannot perform on-line detection and remote communication because of large workload, inconvenience and the like, so that the problems can be solved by designing the insulation on-line monitoring equipment for the wind power generator.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the aerogenerator insulation resistance on-line monitoring equipment who provides.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a aerogenerator insulation resistance on-line monitoring equipment, includes first support frame, first support frame top is connected with the second support frame, and second support frame top connection installs the controller, controller top fixed mounting has the LCD screen, and has a sealing door through hinge connection on one side of the controller, manual test button is installed in the connection of controller one side, the opposite side of controller is connected with three groups of connecting wires, and connecting wire one end is connected with 1Y winding, 2Y winding and generator respectively.

Preferably, the first support frame and the second support frame adopt a C-shaped structural design, and the second support frame is connected with the first support frame and the controller through fastening screws.

Preferably, one side of the controller adopts an inclined structure design, and the two sides of the controller are rotatably connected with lifting rods.

Preferably, the liquid crystal screen adopts a 7-inch TFT true color liquid crystal touch screen.

Preferably, the connecting line consists of a cable and a network cable.

Preferably, the controller is provided with an RJ45 network communication interface and can perform networking communication with a PLC and a PC computer through a modbus TCP/IP protocol.

The beneficial effects of the utility model are that: the controller is under the generator shut down condition, exert continuous DC500V voltage to the winding, measure its winding and to ground insulation situation, the device adopts the true color liquid crystal touch screen of 7 cun TFT, it is clear directly perceived to show, 24 hours in succession monitor the generator running state, the generator becomes the shut down from the running state, controller automatic test once, also can test through manual button (manual test), switching value (compel/continuous) signal, can also send the order through the network is long-rangely and test, the content of test: the method mainly tests the 15S/60S insulation resistance values of the 1Y winding pair shell and the 2Y winding pair shell of the generator and between the 1Y winding and the 2Y winding, gives out alarm or locking switching value signal output according to the insulation resistance, and provides help for normal work of the generator. The alarm resistance and the threshold value of the locking resistance can be set and modified through the parameter setting function interface.

Drawings

Fig. 1 is a schematic front structural view of an on-line insulation resistance monitoring device for a wind driven generator according to the present invention;

fig. 2 is a schematic side structural view of an on-line insulation resistance monitoring device for a wind driven generator according to the present invention;

fig. 3 is the utility model provides a test schematic diagram of aerogenerator insulation resistance on-line monitoring equipment.

In the figure: the generator comprises a first support frame 1, a second support frame 2, a controller 3, a liquid crystal screen 4, a sealing door 5, a manual test button 6, a connecting wire 7, a winding 8 1Y, a winding 9 2Y and a generator 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example (b): referring to fig. 1-3, an on-line insulation resistance monitoring device for a wind driven generator comprises a first support frame 1, wherein the top end of the first support frame 1 is connected with a second support frame 2, a controller 3 is connected and installed on the top end of the second support frame 2, a liquid crystal screen 4 is fixedly installed on the top end of the controller 3, a sealing door 5 is connected to one side of the controller 3 through a hinge, a manual test button 6 is connected and installed on one side of the controller 3, the other side of the controller 3 is connected with three groups of connecting wires 7, and one end of each connecting wire 7 is respectively connected with a 1Y winding 8, a 2Y winding 9 and a generator 10.

Furthermore, the first support frame 1 and the second support frame 2 adopt a C-shaped structural design, and the second support frame 2 is connected with the first support frame 1 and the controller 3 through fastening screws.

Furthermore, one side of the controller 3 is designed to be an inclined structure, and the two sides of the controller 3 are rotatably connected with lifting rods.

Furthermore, the liquid crystal screen 4 adopts a 7-inch TFT true color liquid crystal touch screen.

Further, the connecting line 7 is composed of a cable and a network cable.

Further, the controller 3 is provided with an RJ45 network communication interface and can perform networking communication with a PLC and a PC computer through a modbus TCP/IP protocol.

The working principle is as follows: 1. when the generator is switched from the operating state to the shutdown, the monitoring device checks two conditions: 1) Whether a generator shutdown switching value signal exists or not; 2) Whether the output voltage of the generator is smaller than a set voltage value (the default value is 50V) or not indicates that the generator is shut down, when the two monitoring conditions meet the requirements, the online monitoring device automatically enters a testing working process, the measurement is stopped after the test is finished, a test result is displayed on a liquid crystal screen, and modbus TCP/IP remote measurement and remote signaling are updated;

2. the manual test is finished by pressing a manual test button, when two conditions are detected to meet the requirements, the online monitoring device enters a test working process, the measurement is stopped after the test is finished, a test result is displayed on a liquid crystal display, and modbus TCP/IP remote measurement and remote signaling quantity are updated;

3. the switching value signal (forced/continuous) control test is carried out, when two conditions are detected to meet the requirements, the switching value signal (forced/continuous) is closed once, the online monitoring device enters a test working process, the measurement is stopped after the test is finished, a test result is displayed on a liquid crystal display, modbus TCP/IP remote measurement and remote signaling quantity are updated, the test is finished, if the switching value signal is still in a closed state, the test is continuously carried out until the switching value signal is cancelled (disconnected), and the measurement is stopped after the test is finished;

4. the generator can remotely send out telecontrol test signals through a network modbus TCP/IP under the condition of meeting three shutdown conditions, the online monitoring device automatically enters a test working flow after obtaining the telecontrol test signals, the measurement is stopped after the test is finished, a test result is displayed on the liquid crystal display, and modbus TCP/IP remote measurement and remote communication quantity are updated.

Those not described in detail in this specification are within the skill of the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of description and attached drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, and detailed description is not repeated here.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a aerogenerator insulation resistance on-line monitoring equipment, includes first support frame (1), its characterized in that, first support frame (1) top is connected with second support frame (2), and second support frame (2) top connection installs controller (3), controller (3) top fixed mounting has LCD screen (4), and has sealing door (5) through hinge connection on one side of controller (3), manual test button (6) are installed in controller (3) one side connection, the opposite side of controller (3) is connected with three groups of connecting wire (7), and connecting wire (7) one end is connected with 1Y winding (8), 2Y winding (9) and generator (10) respectively.

2. The insulation resistance on-line monitoring equipment for the wind driven generator according to claim 1, characterized in that the first support frame (1) and the second support frame (2) are designed in a C-shaped structure, and the second support frame (2) is connected with the first support frame (1) and the controller (3) through fastening screws.

3. The on-line insulation resistance monitoring device for the wind driven generator as claimed in claim 1, wherein one side of the controller (3) is designed to be an inclined structure, and two sides of the controller (3) are rotatably connected with lifting rods.

4. The on-line insulation resistance monitoring equipment for the wind driven generator according to claim 1, wherein a 7-inch TFT true color liquid crystal touch screen is adopted as the liquid crystal screen (4).

5. Aerogenerator insulation resistance on-line monitoring device according to claim 1, characterized in that the connection line (7) consists of cables and network wires.

6. The wind turbine insulation resistance online monitoring device according to claim 1, wherein the controller (3) is provided with an RJ45 network communication interface and can perform networking communication with a PLC and a PC computer through a modbus TCP/IP protocol.