Power quality on-line monitoring device based on power grid data monitoring

Abstract

The utility model belongs to the technical field of power grid data monitoring, and particularly relates to an electric energy quality on-line monitoring device based on power grid data monitoring, which comprises a fixed plate, an on-line monitoring module and a cooling module are arranged on the upper surface of the fixed plate, and the cooling module is mounted on the upper surface of the fixed plate and comprises a circulating pump. The circulating pump is fixedly installed on one side of the upper surface of the fixing plate, the upper surface of the circulating pump is fixedly connected with a cooling liquid feeding pipe, one side of the outer surface of the circulating pump is fixedly connected with a first conveying pipe, one end of the first conveying pipe is fixedly connected with a cooling coil, and the other end of the cooling coil is fixedly connected with a second conveying pipe. According to the electric energy quality on-line monitoring device based on power grid data monitoring, a cooling liquid is circularly pumped by a circulating pump, enters a cooling coil through a first conveying pipe and then flows back to the circulating pump through a second conveying pipe, and the cooling liquid flowing in the cooling coil flows to drive heat dissipated by a case to cool the case.

Description

Technical Field

[0001] The utility model relates to the technical field of power grid data monitoring, in particular to an online power quality monitoring device based on power grid data monitoring. Background Art

[0002] In power supply systems, nonlinear loads such as static converters and industrial AC / DC converters, as well as impactful and fluctuating loads such as electric locomotives, electric arc furnaces, and large rolling mills, generate a large amount of high-order harmonics during operation. These loads also lead to increasingly severe voltage fluctuations, flicker, and three-phase imbalance. This not only seriously impacts the safety of the equipment itself, but also disrupts the economic operation of the power grid and creates environmental hazards. Furthermore, airports, banks, precision electronic component manufacturing, computer networks, and service monitoring centers are locations with high power quality requirements, and high-precision equipment is increasingly demanding high-quality electricity. Therefore, strengthening power quality monitoring and management is essential, both for grid operation and for user needs. Monitoring devices are essential for grid data monitoring.

[0003] The operating temperature of the power quality monitoring devices currently used has a certain range. When monitoring the power quality, the heat generated is relatively high, and most monitoring devices are not equipped with corresponding cooling mechanisms to dissipate heat and cool the monitoring devices to ensure their normal operation and reduce the impact of high temperature on monitoring stability.

[0004] To this end, we proposed an online power quality monitoring device based on power grid data monitoring to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide an online power quality monitoring device based on power grid data monitoring to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an online power quality monitoring device based on grid data monitoring, comprising a fixed plate, an online monitoring module and a cooling module being provided on the upper surface of the fixed plate, the online monitoring module being mounted on the upper surface of the fixed plate, and the cooling module being mounted on the upper surface of the fixed plate;

[0007] The cooling module includes a circulation pump, which is fixedly installed on one side of the upper surface of the fixed plate. A coolant feed pipe is fixedly connected to the upper surface of the circulation pump, and a first delivery pipe is fixedly connected to one side of the outer surface of the circulation pump. One end of the first delivery pipe is fixedly connected to a cooling coil, and the other end of the cooling coil is fixedly connected to a second delivery pipe. The coolant inside the cooling coil is pumped by the circulation pump, input through the first delivery pipe, flows out through the second delivery pipe, and flows back to the circulation pump for circulation, thereby cooling the chassis and keeping the chassis at a suitable working temperature.

[0008] Preferably, a connecting flange is fixedly connected to one side of the upper outer surface of the coolant feed pipe, the first delivery pipe and the second delivery pipe are symmetrically distributed on both sides of the outer surface of the circulation pump, and the other end of the second delivery pipe is fixedly connected to the other side of the outer surface of the circulation pump.

[0009] Preferably, the online monitoring module includes a chassis, which is fixedly mounted on the upper surface of the fixed plate, with the outer surfaces of the chassis on both sides and the top surface in contact with the outer surface of the cooling coil, and a card plate is clamped in the middle of the top surface of the chassis. The chassis adopts a fully enclosed design and a reinforced unit chassis, which can effectively resist strong vibrations and strong interference, ensuring that the device still has high reliability under harsh environmental conditions. Regardless of whether the screen is grouped or installed separately, there is no need to add AC or DC input anti-interference modules. The LCD screen uses a TFT true color LCD with a resolution of 640×480, which can display three-phase voltage, current, power quality parameters and various system parameters in real time, and can also display real-time voltage and current waveforms and phase vector diagrams.

[0010] Preferably, a connecting plate is fixedly connected to one side of the outer surface of the chassis, a mounting hole is passed through the outer surface of the connecting plate, a liquid crystal display is fixedly installed on one side of the outer surface of the chassis, an operation button and a status display light are installed on one side of the outer surface of the chassis, and the operation button and the status display light are electrically connected to the liquid crystal display.

[0011] Preferably, a switch is installed on the upper part of the other side of the outer surface of the chassis, and the other side of the outer surface of the chassis is provided with an AC plug-in slot, a motherboard plug-in slot, an I / O plug-in slot and a power socket from left to right. The AC plug-in slot, the motherboard plug-in slot, the I / O plug-in slot and the power socket are all electrically connected between the liquid crystal display screens. The current converter TA and the voltage converter TV connected in the AC plug-in slot are used to convert the secondary side current and voltage signals of the system TA and TV into weak current signals, which are provided to the analog sampling module of the device and play a role in isolating strong and weak electricity.

[0012] Preferably, a sliding rod is fixedly installed on the bottom surface of the fixed plate, and the sliding rod is symmetrically distributed on both sides of the bottom surface of the fixed plate. Slide grooves are opened on both sides of the outer surface of the sliding rod, and positioning holes are passed through the inner wall of the slide groove. The positioning holes are distributed in sequence on the inner wall of the slide groove at equal intervals.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This online power quality monitoring device based on grid data monitoring is equipped with a cooling component. A circulating pump circulates the coolant, which enters the cooling coil through a first delivery pipe and then returns to the circulating pump through a second delivery pipe. The coolant flowing inside the cooling coil drives the heat dissipated by the chassis, cooling the chassis, ensuring the normal operation of the chassis and internal components and extending their service life.

[0015] 2. The power quality online monitoring device based on grid data monitoring has sliding bars symmetrically distributed on both sides of the bottom surface of the fixed plate and sliding grooves on both sides of the outer surface of the sliding bars. When installing the chassis, the fixed plate together with the sliding bars are slid and installed in the installation grooves on the outer surface of the cabinet and other equipment, thereby improving the installation convenience of the chassis. After the installation is completed, the pin is inserted into the positioning hole passing through the inner wall of the sliding groove to limit the installation position of the chassis, thereby making the installation stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second perspective;

[0018] Figure 3 This is a schematic diagram of the cooling mechanism structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the front structure of the chassis of the present invention.

[0020] In the figure: 1. Fixed plate; 2. Slide rod; 201. Slide groove; 202. Positioning hole; 3. Circulation pump; 301. Coolant feed pipe; 302. Connecting flange; 303. First delivery pipe; 304. Cooling coil; 305. Second delivery pipe; 4. Chassis; 401. Connecting plate; 402. Mounting hole; 403. LCD screen; 404. Operation button; 405. Status indicator light; 406. Switch; 407. Power socket; 408. I / O plug-in slot; 409. Motherboard plug-in slot; 410. AC plug-in slot; 5. Card plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-4 , the utility model provides a technical solution:

[0023] Embodiment 1: An online power quality monitoring device based on grid data monitoring includes a fixed plate 1, an online monitoring module and a cooling module are provided on the upper surface of the fixed plate 1, the online monitoring module is installed on the upper surface of the fixed plate 1, and the cooling module is installed on the upper surface of the fixed plate 1;

[0024] The cooling module includes a circulating pump 3, which is fixedly mounted on one side of the upper surface of the fixed plate 1. A coolant feed pipe 301 is fixedly connected to the upper surface of the circulating pump 3, and a first delivery pipe 303 is fixedly connected to one side of the outer surface of the circulating pump 3. One end of the first delivery pipe 303 is fixedly connected to a cooling coil 304, and the other end of the cooling coil 304 is fixedly connected to a second delivery pipe 305.

[0025] A connecting flange 302 is fixedly connected to one side of the upper outer surface of the coolant feed pipe 301, the first delivery pipe 303 and the second delivery pipe 305 are symmetrically distributed on both sides of the outer surface of the circulation pump 3, and the other end of the second delivery pipe 305 is fixedly connected to the other side of the outer surface of the circulation pump 3.

[0026] In this embodiment, the circulation pump 3 pumps and circulates the coolant filled in the coolant feed pipe 301, and pumps it into the cooling coil 304 from the first delivery pipe 303. The coolant flows in the cooling coil 304, and the outer surface of the cooling coil 304 contacts the two sides and the top surface of the outer surface of the chassis 4. When the coolant flows, it takes away the heat inside the chassis 4, thereby cooling the chassis 4 as a whole and ensuring the normal operation of the chassis 4. The coolant flowing through the cooling coil 304 flows out through the second delivery pipe 305 and returns to the inside of the circulation pump 3. After being circulated and pumped by the circulation pump 3, it flows into the cooling coil 304 again through the first delivery pipe 303 and is circulated to continuously cool the chassis 4.

[0027] Embodiment 2: The online monitoring module includes a chassis 4, which is fixedly mounted on the upper surface of the fixing plate 1. The outer surfaces of the chassis 4 and the top surface are in contact with the outer surface of the cooling coil 304. A clamping plate 5 is clamped in the middle of the top surface of the chassis 4.

[0028] A connecting plate 401 is fixedly connected to one side of the outer surface of the chassis 4. A mounting hole 402 is penetrated through the outer surface of the connecting plate 401. A liquid crystal display 403 is fixedly mounted on one side of the outer surface of the chassis 4. An operation button 404 and a status display light 405 are installed on one side of the outer surface of the chassis 4. The operation button 404 and the status display light 405 are electrically connected to the liquid crystal display 403.

[0029] A switch 406 is installed on the upper part of the other side of the outer surface of the chassis 4. From left to right, the other side of the outer surface of the chassis 4 is provided with an AC plug-in slot 410, a motherboard plug-in slot 409, an I / O plug-in slot 408 and a power socket 407. The AC plug-in slot 410, the motherboard plug-in slot 409, the I / O plug-in slot 408 and the power socket 407 are all electrically connected between the LCD screen 403.

[0030] In this embodiment, an AC plug-in slot 410 is located on the other side of the chassis 4. Internally connected to the AC plug-in slot 410 are current converters TA and voltage converters TV, which convert the secondary current and voltage signals of the systems TA and TV into weak current signals, which are then provided to the device's analog sampling module and serve as isolation between strong and weak currents. The plug-in has four monitoring channels, each covering three phases A, B, and C. Depending on user needs, any channel can be configured at the factory as a voltage monitoring channel (the three TVs convert bus voltages UA, UB, and UC, respectively) or a current monitoring channel (the three TAs convert currents IA, IB, and IC, respectively). The mainboard plug-in slot 409 internally houses the microprocessor CPU, RAM, ROM, Flash Memory, network communication circuitry, and other components. Furthermore, it includes interfaces for GPS and IRIG-B code timing. The plug-in utilizes an 8-layer printed circuit board and surface mount technology, employing multiple anti-interference measures to significantly enhance its anti-interference performance. The high-performance microprocessor CPU is a 32-bit dual-core processor with a clock speed of 800 MHz. All integrated circuits are industrial or military products, which makes the device highly stable and reliable. The I / O plug-in slot 408 is internally connected with two inputs and up to twelve relay outputs. The power socket 407 is internally connected with a power module to convert the external AC and DC power into the voltage required for the monitoring device to work. The power module inputs DC 220V / 110V or AC 220V (select the corresponding specifications as needed) and outputs +5V voltage for the operation of the device's digital devices; the 24V voltage is mainly used for the control circuit of the relay and the acquisition circuit of the input quantity.

[0031] Example 3: A sliding rod 2 is fixedly installed on the bottom surface of the fixed plate 1, and the sliding rod 2 is symmetrically distributed on both sides of the bottom surface of the fixed plate 1. A sliding groove 201 is opened on both sides of the outer surface of the sliding rod 2, and a positioning hole 202 is passed through the inner wall of the sliding groove 201. The positioning holes 202 are distributed in sequence on the inner wall of the sliding groove 201 at equal intervals.

[0032] In this embodiment, when the chassis 4 is installed and used, the fixed plate 1 connected to the chassis 4 is slidably connected to the installation groove on the outer surface of the installation cabinet or other equipment through the slide rods 2 fixedly connected on both sides of its bottom surface. After the slide rod 2 slides to the appropriate position, the positioning pin is inserted into the positioning hole 202 opened on the inner wall of the slide groove 201 to limit the position of the slide rod 2, and the installation of the chassis 4 is completed.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. An online power quality monitoring device based on power grid data monitoring, comprising a fixing plate (1), characterized in that: An online monitoring module and a cooling module are provided on the upper surface of the fixed plate (1); the online monitoring module is mounted on the upper surface of the fixed plate (1); and the cooling module is mounted on the upper surface of the fixed plate (1); The cooling module comprises a circulation pump (3), the circulation pump (3) being fixedly mounted on one side of the upper surface of the fixed plate (1), the upper surface of the circulation pump (3) being fixedly connected to a coolant feed pipe (301), the outer surface of the circulation pump (3) being fixedly connected to a first delivery pipe (303), one end of the first delivery pipe (303) being fixedly connected to a cooling coil (304), and the other end of the cooling coil (304) being fixedly connected to a second delivery pipe (305).

2. The online power quality monitoring device based on power grid data monitoring according to claim 1, characterized in that: A connecting flange (302) is fixedly connected to one side of the upper outer surface of the coolant feed pipe (301); the first delivery pipe (303) and the second delivery pipe (305) are symmetrically distributed on both sides of the outer surface of the circulation pump (3); and the other end of the second delivery pipe (305) is fixedly connected to the other side of the outer surface of the circulation pump (3).

3. The online power quality monitoring device based on power grid data monitoring according to claim 1, characterized in that: The online monitoring module comprises a chassis (4), the chassis (4) being fixedly mounted on the upper surface of the fixing plate (1), the outer surfaces of the chassis (4) on both sides and the top surface being in contact with the outer surface of the cooling coil (304), and a clamping plate (5) being clamped in the middle of the top surface of the chassis (4).

4. The online power quality monitoring device based on power grid data monitoring according to claim 3 is characterized in that: A connecting plate (401) is fixedly connected to one side of the outer surface of the chassis (4), and a mounting hole (402) is passed through the outer surface of the connecting plate (401). A liquid crystal display (403) is fixedly mounted on one side of the outer surface of the chassis (4). An operating button (404) and a status display light (405) are mounted on one side of the outer surface of the chassis (4), and both the operating button (404) and the status display light (405) are electrically connected to the liquid crystal display (403).

5. The online power quality monitoring device based on power grid data monitoring according to claim 3 is characterized in that: A switch (406) is installed on the upper portion of the other side of the outer surface of the chassis (4). An AC plug-in slot (410), a motherboard plug-in slot (409), an I / O plug-in slot (408) and a power socket (407) are sequentially provided on the other side of the outer surface of the chassis (4) from left to right. The AC plug-in slot (410), the motherboard plug-in slot (409), the I / O plug-in slot (408) and the power socket (407) are all electrically connected to the liquid crystal display (403).

6. The online power quality monitoring device based on power grid data monitoring according to claim 1, characterized in that: A sliding rod (2) is fixedly installed on the bottom surface of the fixed plate (1), and the sliding rod (2) is symmetrically distributed on both sides of the bottom surface of the fixed plate (1). Both sides of the outer surface of the sliding rod (2) are provided with a sliding groove (201), and the inner wall of the sliding groove (201) is penetrated by a positioning hole (202), and the positioning holes (202) are distributed in sequence at equal intervals on the inner wall of the sliding groove (201).

Images