CN215009762U

CN215009762U - Intelligent monitoring terminal for electric energy quality of transformer substation

Info

Publication number: CN215009762U
Application number: CN202121281798.3U
Authority: CN
Inventors: 朱德洲
Original assignee: Jiangxi Mingye Power Equipment Co ltd
Current assignee: Jiangxi Mingye Power Equipment Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-03
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a transformer substation electric energy quality intelligent monitoring terminal, which comprises a machine body, a mounting plate is fixedly connected to the side of the machine body, mounting holes are arranged at the inner side of the mounting plate, an indicator lamp and a display screen are respectively arranged at the front of the machine body, a button is arranged at the side of the display screen, an electric wire is fixedly connected to the output end of the machine body, the machine body is respectively electrically connected with a voltage detector and a current detector through the electric wire, a main board is arranged inside the machine body, the top of the main board is electrically connected with an alternating current module, the side of the alternating current module is electrically connected with a signal storage module, the side of the signal storage module is electrically connected with a wireless communication module, and the side of the wireless communication module is electrically connected with a processing module. The monitoring precision is not high, and the use is inconvenient.

Description

Intelligent monitoring terminal for electric energy quality of transformer substation

Technical Field

The utility model relates to an electric energy quality technical field specifically is a transformer substation's electric energy quality intelligent monitoring terminal.

Background

In a strict sense of power quality, main indexes for measuring the power quality include voltage, frequency and waveform, and in a general sense, the main indexes refer to high-quality power supply, including voltage quality, current quality, power supply quality and power consumption quality.

However, the existing intelligent substation power quality monitoring terminal is low in sampling speed, small in storage capacity, poor in monitoring and sampling real-time performance, single in communication transmission mode, low in monitoring precision and inconvenient to use, and therefore the intelligent substation power quality monitoring terminal is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a power quality intelligent monitoring terminal of transformer substation to it is slow to provide current power quality intelligent monitoring terminal of transformer substation sampling speed in solving above-mentioned background art, and storage capacity is little, and monitoring sampling real-time is relatively poor, and communication transmission mode is more single, the not high problem of monitoring precision.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an intelligent monitoring terminal for the quality of electric energy of a transformer substation comprises a machine body, wherein a mounting plate is fixedly connected to the side surface of the machine body, a mounting hole is formed in the inner side of the mounting plate, an indicator lamp and a display screen are respectively installed on the front surface of the machine body, a button is installed on the side surface of the display screen, an electric wire is fixedly connected to the output end of the machine body, the machine body is respectively and electrically connected with a voltage detector and a current detector through the electric wire, a main board is installed inside the machine body, the top of the main board is electrically connected with an alternating current module, the side surface of the alternating current module is electrically connected with a signal storage module, the side surface of the signal storage module is electrically connected with a wireless communication module, the side surface of the wireless communication module is electrically connected with a processing module, the side surface of the processing module is electrically connected with a single chip microcomputer, and the side surface of the single chip microcomputer is electrically connected with a display module, and the side surface of the display module is electrically connected with a lamplight audio module.

Preferably, the number of the mounting holes is four, and the four mounting holes are respectively arranged on the two mounting plates in pairwise symmetry.

Preferably, the processing module is an embedded microprocessor, and the processing module is embedded on the mainboard.

Preferably, the display module is located on the main board and close to the display screen, and the display module is electrically connected with the display screen.

Preferably, the alternating current module is provided with a resonant voltage type double-loop controlled resonant switch, and the alternating current module is directly connected with an electric wire.

Preferably, the voltage detector and the current detector are provided in plurality, and the plurality of voltage detectors and the plurality of current detectors are connected to the plurality of high voltage distribution boxes.

(III) advantageous effects

The utility model provides a transformer substation's electric energy quality intelligent monitoring terminal possesses following beneficial effect:

the intelligent monitoring terminal for the electric energy quality of the transformer substation is characterized in that a mainboard, an alternating current module, a signal storage module, a wireless communication module and a processing module are arranged, high-voltage buses and harmonic sources at all levels of a power distribution network are connected into a public connection point of a public power grid, voltage detectors and current detectors arranged in all distribution boxes are used for detecting voltage data of all high-voltage taps of the distribution boxes through the voltage detectors, current data of all high-voltage taps of the distribution boxes are detected through the current detectors, voltage parameters and current parameters are converted into electric signals and then are transmitted to the electric energy quality monitoring terminal through electric wires together, voltage and current monitoring data can also be transmitted on a high-speed Ethernet directly, the data are firstly connected into the alternating current module of the electric energy quality monitoring terminal through the electric wires, the alternating current module converts input strong electric signals into voltage signals with amplitude values within a range of +/-5V, meanwhile, the input and the output are isolated photoelectrically, the output signal is sent to a second-order active low-pass filter circuit and then sent to an AD input end of a processing module, the processing module completes analog-to-digital conversion and calculation of a measurement algorithm, and the detected data such as voltage, frequency and waveform are calculated and compared to detect the deviation of voltage, current or frequency which causes the failure or abnormal operation of electric equipment, wherein the contents of the deviation comprise frequency deviation, voltage fluctuation and flicker, three-phase unbalance, instantaneous or transient overvoltage, harmonic wave, voltage sag, interruption, temporary rise and power supply continuity, and then the storage module stores the calculated data, and the storage module is electrically connected with a wireless communication module, a display module and a light audio module through a mainboard, the wireless communication module is connected with a high-speed Ethernet to realize the communication and data mutual transmission requirements with a remote platform, with signal transmission to cell-phone APP or other terminals, so the user just can convenient and fast know monitoring information real-time situation, thereby can in time discover trouble or unusual, connect the display screen with monitoring information direct reaction for the user with display module, light audio module is connected with the pilot lamp, if monitoring data is unusual, the pilot lamp scintillation just sends the buzzer and feeds back to the user, realize the warning under the abnormal situation, it is slow to have solved current transformer substation's electric energy quality intelligent monitoring terminal sampling speed, the storage capacity is little, monitoring sampling real-time is relatively poor, communication transmission mode is more single, monitoring accuracy is not high, the problem of not being convenient for to use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of the machine body of the present invention;

fig. 3 is a schematic view of a partial structure of the voltage detector of the present invention.

In the figure: 1. a body; 101. a main board; 102. an alternating current module; 103. a signal storage module; 104. a wireless communication module; 105. a processing module; 106. a single chip microcomputer; 107. a display module; 108. a light audio module; 2. mounting a plate; 3. mounting holes; 4. a display screen; 5. an indicator light; 6. pressing a key; 7. an electric wire; 8. a voltage detector; 9. a current detector.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below 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, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being 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.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: an intelligent monitoring terminal for the quality of electric energy of a transformer substation comprises a machine body 1, a mounting plate 2 is fixedly connected to the side surface of the machine body 1, a mounting hole 3 is formed in the inner side of the mounting plate 2, an indicator lamp 5 and a display screen 4 are respectively installed on the front surface of the machine body 1, a button 6 is installed on the side surface of the display screen 4, an electric wire 7 is fixedly connected to the output end of the machine body 1, the machine body 1 is respectively and electrically connected with a voltage detector 8 and a current detector 9 through the electric wire 7, a main board 101 is installed inside the machine body 1, the top of the main board 101 is electrically connected with an alternating current module 102, the side surface of the alternating current module 102 is electrically connected with a signal storage module 103, the side surface of the signal storage module 103 is electrically connected with a wireless communication module 104, the side surface of the wireless communication module 104 is electrically connected with a processing module 105, the side surface of the processing module 105 is electrically connected with a single chip 106, and the side surface of the single chip 106 is electrically connected with a display module 107, the side surface of the display module 107 is electrically connected with a light and audio module 108.

In this embodiment, it is concrete, mounting hole 3 is provided with four, and four mounting holes 3 two bisymmetries respectively set up on two mounting panels 2, through the mounting hole 3 screw in bolt on the mounting panel 2 and turn round tight nut, with the installation the utility model discloses electric energy quality intelligent monitoring terminal.

In this embodiment, specifically, the processing module 105 is an embedded microprocessor, the processing module 105 is embedded on the motherboard 101, the processing module 105 performs analog-to-digital conversion and measurement algorithm calculation, and performs calculation and comparison with detected data, such as voltage, frequency and waveform, to detect voltage, current or frequency deviation causing a failure or abnormal operation of the electrical equipment, and the contents of the deviation include frequency deviation, voltage fluctuation and flicker, three-phase imbalance, transient or transient overvoltage, harmonic, voltage sag, interruption, sag and power supply continuity.

In this embodiment, specifically, the display module 107 is located on the main board 101 near the display screen 4, the display module 107 is electrically connected to the display screen 4, and the display module 107 is connected to the display screen 4 to directly respond the monitoring information to the user.

In this embodiment, specifically, the ac module 102 is provided with a resonant voltage type double-loop controlled resonant switch, the ac module 102 is directly connected to the electric wire 7, data is first connected to the ac module 102 of the power quality monitoring terminal through the electric wire 7, the ac module 102 converts an input strong electric signal into a voltage signal having an amplitude within a range of ± five V, and at the same time, performs photoelectric isolation between input and output, and sends an output signal to a second-order active low-pass filter circuit, and then to an AD input terminal of the processing module 105.

In this embodiment, specifically, a plurality of voltage detectors 8 and a plurality of current detectors 9 are provided, the plurality of voltage detectors 8 and the plurality of current detectors 9 are connected to a plurality of high-voltage distribution boxes, each level of high-voltage bus of the distribution network and a harmonic source are connected to a common connection point of the public power grid, the voltage detectors 8 and the current detectors 9 provided in each distribution box can detect voltage data of each high-voltage tap of the distribution box through the voltage detectors 8, current data of each high-voltage tap of the distribution box can be detected through the current detectors 9, and then voltage parameters and current parameters are converted into electric signals and transmitted to the electric energy quality monitoring terminal through the electric wire 7.

The working principle is as follows: after the utility model is installed, firstly, the installation, fixation and safety protection of the utility model are checked, all levels of high voltage bus and harmonic sources of the distribution network are connected into the public connection point of the public power grid, the voltage detector 8 and the current detector 9 which are arranged in each distribution box can detect the voltage data of each high voltage tap of the distribution box through the voltage detector 8, the current data of each high voltage tap of the distribution box can be detected through the current detector 9, then the voltage parameter and the current parameter are converted into electric signals to be transmitted to the electric energy quality monitoring terminal through the electric wire 7 together, or the voltage and the current monitoring data can be directly transmitted on the high speed Ethernet, the data is firstly connected into the alternating current module 102 of the electric energy quality monitoring terminal through the electric wire 7, the alternating current module 102 converts the input strong electric signals into voltage signals with the amplitude within the range of +/-five V, and simultaneously, the input and the output are isolated by photoelectricity, the output signal is sent to a second-order active low-pass filter circuit, then sent to an AD input end of a processing module 105, the processing module 105 completes analog-digital conversion and measurement algorithm calculation, and carries out calculation and comparison according to detected data such as voltage, frequency and waveform, detects voltage, current or frequency deviation causing electric equipment failure or abnormal operation, the content of the deviation comprises frequency deviation, voltage fluctuation and flicker, three-phase imbalance, transient or transient overvoltage, harmonic, voltage sag, interruption, transient rise and power supply continuity, then the storage module stores the calculated data, the storage module is electrically connected with a wireless communication module 104, a display module 107 and a light audio module 108 through a mainboard 101, the wireless communication module 104 is connected with a high-speed Ethernet, the communication and data mutual transmission requirements with a remote platform are realized, and the signal is transmitted to a mobile phone APP or other terminals, so the user just can convenient and fast know the monitoring information real-time condition to can in time discover trouble or unusual, connect display screen 4 with monitoring information direct reaction for the user with display module 107, light audio module 108 is connected with pilot lamp 5, if monitoring data is unusual, pilot lamp 5 scintillation just sends the buzzing sound and feeds back to the user, realizes the warning under the abnormal conditions, just so accomplished right the utility model discloses a use.

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.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a transformer substation's electric energy quality intelligent monitoring terminal, includes organism (1), its characterized in that: the side face of the machine body (1) is fixedly connected with a mounting plate (2), a mounting hole (3) is formed in the inner side of the mounting plate (2), an indicator lamp (5) and a display screen (4) are respectively installed on the front face of the machine body (1), a button (6) is installed on the side face of the display screen (4), an electric wire (7) is fixedly connected with the output end of the machine body (1), the machine body (1) is respectively and electrically connected with a voltage detector (8) and a current detector (9) through the electric wire (7), a main board (101) is installed inside the machine body (1), an alternating current module (102) is electrically connected with the top of the main board (101), a signal storage module (103) is electrically connected with the side face of the alternating current module (102), a wireless communication module (104) is electrically connected with the side face of the signal storage module (103), a processing module (105) is electrically connected with the side face of the wireless communication module (104), the side electric connection of processing module (105) has singlechip (106), the side electric connection of singlechip (106) has display module (107), the side electric connection of display module (107) has light audio module (108).

2. The intelligent substation power quality monitoring terminal according to claim 1, characterized in that: the number of the mounting holes (3) is four, and the four mounting holes (3) are symmetrically arranged on the two mounting plates (2) in pairs respectively.

3. The intelligent substation power quality monitoring terminal according to claim 1, characterized in that: the processing module (105) is an embedded microprocessor, and the processing module (105) is embedded on the mainboard (101).

4. The intelligent substation power quality monitoring terminal according to claim 1, characterized in that: the display module (107) is located on the main board (101) and close to the display screen (4), and the display module (107) is electrically connected with the display screen (4).

5. The intelligent substation power quality monitoring terminal according to claim 1, characterized in that: the alternating current module (102) is provided with a resonant voltage type double-loop control resonant switch, and the alternating current module (102) is directly connected with the electric wire (7).

6. The intelligent substation power quality monitoring terminal according to claim 1, characterized in that: voltage detector (8) and current detector (9) are provided with a plurality ofly, and are a plurality of voltage detector (8) are connected a plurality of high tension switchgear with current detector (9).