Instrument for electric energy quality analysis and control

Abstract

The utility model relates to an instrument for analyzing and controlling electric energy quality. The instrument comprises an analyzer; the analyzer is used for connecting a first binding post and a second binding post of a circuit to be detected and acts on the first binding post or the second binding post; and the connecting assembly is used for keeping the first binding post and the second binding post to be connected or disconnected and is in signal connection with the analyzer. According to the utility model, through cooperation of the connecting assembly, when the analyzer detects that the quality of the current on the first connecting column or the second connecting column is abnormal, the analyzer can control the connecting assembly to keep the first connecting column and the second connecting column in a disconnected state so as to cut off the detected power supply circuit; therefore, the influence of the abnormal electric energy quality at the power supply on the power grid is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power quality analysis equipment, in particular to an instrument for power quality analysis and control. Background Art

[0002] Power quality is often affected by many factors, especially fluctuations in the power supply. Therefore, in photovoltaic or wind power systems, to ensure they can provide stable power to the grid, power analysis is usually required to detect whether their power generation quality meets grid-connected requirements.

[0003] In the prior art, when testing the power quality, a power quality analyzer is usually used to test the circuit after it comes out of the inverter. The power quality analyzer is usually handheld by personnel, and can also be fixedly installed to maintain the effect of continuous testing. However, these analyzers usually only have analysis and detection functions. When the power quality is unstable, they cannot directly cut off the circuit, thereby failing to directly prevent the power supply from affecting the power supply of the grid. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the following technical problem in the prior art: the power quality analysis equipment in the prior art is unable to disconnect the circuit when the power quality of the power supply source does not meet the standard, resulting in unstable power quality of the power supply source and affecting the power quality of the power grid. Therefore, the purpose of this utility model is to further improve the current technology, and its purpose is to enable the power quality analysis equipment to automatically disconnect the circuit between the power supply source and the power grid when it detects that the power quality does not meet the standard, thereby reducing the impact of the power supply source switching on the power grid.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: an instrument for power quality analysis and control, comprising an analyzer and:

[0007] used to connect a first terminal and a second terminal of a circuit to be tested, wherein the analyzer acts on the first terminal or the second terminal;

[0008] A connecting component is used to keep the first terminal and the second terminal connected or disconnected, and to connect the analyzer signal.

[0009] As an optimal technical solution for an instrument for power quality analysis and control, the first terminal and the second terminal are relatively fixedly arranged, and the connecting component includes a guide block that is relatively slidably arranged with the first terminal, and an electromagnet fixedly connected to the guide block. It also includes two permanent magnets that are relatively fixed with the first terminal and are located on the sliding path of the electromagnet. When the guide block slides, it synchronously forms contact or releases contact with the first terminal and the second terminal, and the electromagnet is connected to the analyzer signal.

[0010] As an optimal technical solution for an instrument for power quality analysis and control, it also includes a mounting bracket fixedly connected to the analyzer, the guide block is slidably set on the mounting bracket, and the permanent magnet, the first terminal and the second terminal are all fixedly connected to the mounting bracket.

[0011] As a preferred technical solution for an instrument for power quality analysis and control, the analyzer includes a main body and a detection head that are fixedly connected, and the detection head forms a fixed ring sleeve for the first terminal or the second terminal.

[0012] As an optimal technical solution for an instrument for power quality analysis and control, a sliding frame is slidably provided on the mounting frame, the guide block and the electromagnet are fixedly connected to the sliding frame, and the sliding frame has an insulating feature.

[0013] As an optimal technical solution for an instrument for power quality analysis and control, the guide block and the sliding frame are connected via a flexible pad.

[0014] As an optimal technical solution for an instrument for power quality analysis and control, a connecting rod is constructed on the mounting frame and slides through the sliding frame.

[0015] As an optimal technical solution for an instrument for power quality analysis and control, the mounting frame is constructed with a base plate, the connecting rod is fixedly connected between the base plate and the mounting frame, and an installation area is formed between the base plate and the mounting frame, and the sliding frame and the permanent magnet are both located in the installation area.

[0016] The instrument for power quality analysis and control provided by the present invention has the beneficial effect that: through the cooperation of the connecting components, when the analyzer detects that the current on the first connecting column or the second connecting column has quality abnormalities, the analyzer can control the connecting components to keep the first connecting column and the second connecting column in a disconnected state, so as to cut off the detected power supply circuit, thereby reducing the impact of the power quality abnormality at the power supply source on the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not deviating from the concept of the present application.

[0018] Figure 1 It is a perspective view of the present application.

[0019] Figure 2 It is a side view of the present application.

[0020] Figure 3 It is an enlarged schematic view of A in the present application. Figure 2

[0021] Figure 4 It is a partial structure perspective view and a partial structure cut-out schematic view of the present application.

[0022] Reference signs: 1, analyzer; 101, main body part; 102, detection head; 2, first wiring post; 3, second wiring post; 4, connecting assembly; 401, guide block; 402, electromagnet; 403, permanent magnet; 5, mounting rack; 6, sliding rack; 7, flexible pad; 8, connecting rod; 9, bottom plate; 10, mounting area. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purpose, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without deviating from the concept of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0026] ​Thirdly, the utility model is described in detail in combination with the schematic diagram, in the detailed description of the utility model embodiment, for the convenience of illustration, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of the utility model protection here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0027] Referring to Figure 1-4 An embodiment of the utility model provides an instrument for electric energy quality analysis and control, including the analyzer 1 for realizing electric energy quality analysis in prior art, in addition still including following part:

[0028] First connecting post 2 and second connecting post 3 for connecting the circuit to be detected, the analyzer 1 is used to carry out quality detection to the current flowing through the first connecting post or the second connecting post when working;

[0029] Connecting assembly 4 for keeping the first connecting post 2 and the second connecting post 3 form conduction or disconnection, and the connecting assembly 4 is electrically driven working mode, and is connected with the analyzer 1 signal, specifically can be electric signal connection or wireless signal connection;

[0030] Based on the above, when installing as a whole, the power supply circuit is cut off, and the two broken ends of the cut-off place are connected to the first connecting post 2 and the second connecting post 3 respectively, when the first connecting post 2 and the second connecting post 3 form conduction, the power supply circuit is in the state of conduction, and vice versa, in the state of disconnection, when conduction, the analyzer 1 detects the first connecting post 2 or the second connecting post 3, so as to be equivalent to detecting the current quality in the power supply circuit, through the signal connection effect, when the analyzer 1 detects that the current quality flowing through the first connecting post 2 or the second connecting post 3 is substandard, the connecting assembly 4 is kept disconnected between the first connecting post 2 and the second connecting post 3 through the signal connection effect, so as to cut off the power supply circuit, to reduce the influence of the poor electric energy quality of the power supply on the electric energy quality of the power supply network, through the continuous detection effect, when the electric energy quality of the power supply reaches the standard, the connecting assembly 4 is kept in the state of conduction between the first connecting post 2 and the second connecting post 3 again through the signal connection relationship, so as to restore the power supply state of the power supply to the power grid;

[0031] In addition to being installed on the power supply circuits of some large-scale comprehensive power supply facilities, the present invention can also be installed on some small household photovoltaic panels or wind power units. In this case, the output end of the inverter and the user's household power supply circuit, as well as the output end and the battery, need to be connected through the present invention. Therefore, when the output end of the inverter detects that the power quality is not up to standard, the connection between the output end and the household power supply circuit can be cut off, and the output end and the battery can be connected. When the power generation quality meets the requirements, the connection is just the opposite. Based on this usage method, when the power generation quality does not meet the standards, it cannot be directly used to power household appliances. At this time, it can be stored. When the power generation quality is qualified, it can be directly connected to the household power supply circuit for use in household appliances, thereby further exerting the practical effect and application scope of the present invention.

[0032] Further, refer to Figure 1-4 , the first terminal 2 and the second terminal 3 are relatively fixedly arranged. Regarding the form of the connecting component 4, specifically, it includes a guide block 401 that is relatively slidably arranged with the first terminal 2, and an electromagnet 402 fixedly connected to the guide block 401, and also includes two permanent magnets 403 that are relatively fixedly arranged with the first terminal 2, which are located on the sliding path of the electromagnet 402. In terms of positional relationship, when the guide block 401 slides, it can synchronously form contact with the first terminal 2 and the second terminal 3, and can also slide to release this contact state. The electromagnet 402 is connected to the analyzer 1 signal, which can specifically be an electrical signal connection, such as a wire connection;

[0033] Based on the above, when the electromagnet 402 moves to form attraction with the two permanent magnets 403 respectively, the corresponding position states are that the guide block 401 synchronously forms contact with the first terminal 2 and the second terminal 3, and releases contact, so that according to the power-on state of the electromagnet 402, it can respectively form an effect between itself and the two permanent magnets 403, so as to correspondingly control itself to slide to form attraction with the two permanent magnets 403, so as to control the movement of the guide block 401 to maintain the connection and disconnection state between the first terminal 2 and the second terminal 3. Since the electromagnet 402 has an armature inside, when it forms attraction with the permanent magnet 403 therein, it does not need to be continuously powered by itself, and can maintain a continuous attraction state by relying on the armature, thereby having a better energy-saving effect, and relying on the magnetic attraction force to maintain a good force, thereby ensuring the contact effect of the guide block 401 and ensuring a good conduction and disconnection effect.

[0034] Further, refer to Figure 1-4The present invention also includes a mounting bracket 5 fixedly connected to the analyzer 1, and the guide block 401 is slidably set on the mounting bracket 5. The permanent magnet 403, the first terminal 2 and the second terminal 3 are all fixedly connected to the mounting bracket 5, so that the sliding relationship between the electromagnet 402 relative to the first terminal 2 can be realized, and the position coordination between the electromagnet 402 and the two permanent magnets 403 can be realized. Through the action of the mounting bracket 5, the analyzer 1 and the connecting bracket can become an integral structure, thereby facilitating the overall installation and carrying.

[0035] Further, refer to Figure 1 In the prior art, the analyzer 1 is basically composed of a main body 101 and a detection head 102, which are connected by a wire. The main body 101 is used for parameter setting and display, etc., and the detection head 102 is used to be mounted on the wire to be detected. In the present utility model, the detection head 102 and the main body 101 are directly set to be fixedly connected, thereby eliminating the wire part. In addition, the detection head 102 is set to form a fixed ring sleeve for the first terminal 2 or the second terminal 3, so that the fixed connection between the mounting bracket 5 and the analyzer 1 is realized through the first terminal 2 or the second terminal 3, making the overall structure simpler, thereby reducing the overall weight and better adapting to installation and carrying requirements.

[0036] Further, refer to Figure 3 and Figure 4 Regarding the connection form between the guide block 401 and the electromagnet 402, a sliding frame 6 is slidably arranged on the mounting frame 5, and the guide block 401 and the electromagnet 402 are fixedly connected to the sliding frame 6, thereby realizing the sliding of the guide block 401 on the mounting frame 5 and realizing the connection between the guide block 401 and the permanent magnet 403. The sliding frame 6 has an insulating feature, such as being made of plastic. The setting of the sliding frame 6 makes it convenient for personnel to manually move it, so that there is no need to touch the guide block 401 to control the sliding of the guide block 401, so as to achieve the effect of manually controlling the on-off of the circuit, thereby further improving the practicality of the present invention.

[0037] Further, refer to Figure 3 The guide block 401 is connected to the sliding frame 6 through a flexible pad 7. The elastic effect of the flexible pad 7 can increase the pressing effect of the guide block 401 on the first terminal 2 and the second terminal 3, thereby increasing the conduction effect after contact.

[0038] Further, refer to Figure 3 and Figure 4Regarding the sliding form of the sliding frame 6, a connecting rod 8 is also constructed on the mounting frame 5, which slides through the sliding frame 6, thereby realizing a sliding connection between the sliding frame 6 and the mounting frame 5. The connecting rod 8 can maintain the stability of the sliding frame 6 during the sliding process to prevent the formation of friction, thereby preventing the guide block 401 from malfunctioning and causing abnormalities in the circuit on-off control.

[0039] Further, refer to Figure 3 and Figure 4 The mounting frame 5 is constructed with a base plate 9, and the connecting rod 8 is fixedly connected between the base plate 9 and the mounting frame 5. A mounting area 10 is formed between the base plate 9 and the mounting frame 5. The sliding frame 6 and the permanent magnet 403 are both located in the mounting area 10, thereby providing external protection for the sliding frame 6 to prevent it from being disturbed by external devices during its movement. At the same time, it further protects components such as the guide block 401, the electromagnet 402 and the permanent magnet 403, so that they are not subject to external interference when interacting with each other. The cooperation of the connecting rod 8 further increases the connection strength between the base plate 9 and the mounting frame 5, thereby increasing the stability of the overall structure.

[0040] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An instrument for power quality analysis and control, comprising an analyzer (1), characterized in that: Also includes: A first terminal (2) and a second terminal (3) for connecting a circuit to be detected, wherein the analyzer (1) acts on the first terminal (2) or the second terminal (3); A connecting component (4) for maintaining the first terminal (2) and the second terminal (3) in conduction or disconnection, and for signal connection with the analyzer (1); The first terminal (2) and the second terminal (3) are relatively fixedly arranged, the connecting assembly (4) includes a guide block (401) arranged to slide relative to the first terminal (2), and an electromagnet (402) fixedly connected to the guide block (401), and also includes two permanent magnets (403) relatively fixedly arranged to the first terminal (2), which are located on the sliding path of the electromagnet (402), and the guide block (401) is synchronously in contact with or released from contact with the first terminal (2) and the second terminal (3) when sliding, and the electromagnet (402) is connected to the analyzer (1) signal.

2. The instrument for power quality analysis and control according to claim 1, characterized in that: It also includes a mounting frame (5) fixedly connected to the analyzer (1), the guide block (401) is slidably arranged on the mounting frame (5), and the permanent magnet (403), the first terminal (2) and the second terminal (3) are all fixedly connected to the mounting frame (5).

3. The instrument for power quality analysis and control according to claim 2, characterized in that: The analyzer (1) comprises a main body (101) and a detection head (102) that are fixedly connected, and the detection head (102) forms a fixed ring sleeve for the first terminal (2) or the second terminal (3).

4. The instrument for power quality analysis and control according to claim 2, characterized in that: A sliding frame (6) is slidably provided on the mounting frame (5), the guide block (401) and the electromagnet (402) are both fixedly connected to the sliding frame (6), and the sliding frame (6) has an insulating feature.

5. The instrument for power quality analysis and control according to claim 4, characterized in that: The guide block (401) and the sliding frame (6) are connected via a flexible pad (7).

6. The instrument for power quality analysis and control according to claim 4, characterized in that: A connecting rod (8) is constructed on the mounting frame (5) and slides through the sliding frame (6).

7. The instrument for power quality analysis and control according to claim 6, characterized in that: A base plate (9) is constructed on the mounting frame (5), the connecting rod (8) is fixedly connected between the base plate (9) and the mounting frame (5), and a mounting area (10) is formed between the base plate (9) and the mounting frame, and the sliding frame (6) and the permanent magnet (403) are both located in the mounting area (10).

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