Intelligent voltage regulating device for stabilizing voltage

Abstract

The utility model relates to the technical field of voltage regulating devices, in particular to an intelligent voltage regulating device for stabilizing voltage. Comprising an intelligent controller, an electric power element, a voltage regulating and stabilizing coil, a wire inlet side terminal and a wire outlet side terminal, two live wires of a power grid distribution line are accessed through the wire inlet side terminal and are connected to the voltage regulating and stabilizing coil, and a zero wire is accessed through the wire inlet side terminal and is connected to the wire outlet side terminal through the electric power element, so that a bypass is formed; the voltage regulating and stabilizing coil comprises an input winding and an output winding, and the input winding is provided with one or more input pile heads; each input pile head is provided with an electric power element, the electric power elements are used for connecting or disconnecting circuit connection of the input pile heads or bypasses of the voltage regulating and stabilizing coil, and the intelligent controller is used for monitoring input voltage and controlling the electric power elements to be in a starting state or a stopping state according to the input voltage. According to the technical scheme, the voltage can be automatically adjusted according to load changes, manual intervention is reduced, and operation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage regulating devices, and specifically relates to an intelligent voltage regulating device for stabilizing voltage. Background Technique

[0002] The working voltage uniformly output by the power grid is not flexible enough in the face of different load conditions. In the light load state, the voltage provided by the power grid is often too high, which not only causes unnecessary energy waste, but also may damage electrical equipment; while in the heavy load or full load condition, the voltage may be too low, affecting the normal operation of the equipment, and even leading to frequent failures, reducing the operation efficiency and economic benefits of the entire power grid.

[0003] In response to the above problems, traditional solutions generally rely on large-scale line replacement or upgrade, which not only requires huge capital investment, but also has a long construction period and great coordination difficulty, and it is difficult to effectively relieve the power shortage situation in a short time. At the same time, most of the existing voltage regulating products on the market lack intelligent regulation functions and cannot automatically adjust the output voltage according to the actual changes of the load. Instead, manual on-site operation is required, which not only increases the operation and maintenance costs, but also reduces the response speed and reliability of the system. Content of the Utility Model

[0004] The purpose of the utility model is to provide an intelligent voltage regulating device for stabilizing voltage, and this technical solution can improve the power supply capacity and voltage stability of the power grid.

[0005] To achieve the above purpose, the basic solution provided by the utility model includes an intelligent controller, a power element, a voltage regulating and stabilizing coil, an incoming line side terminal, and an outgoing line side terminal; two live wires of the power grid distribution line are connected through the incoming line side terminal and connected to the voltage regulating and stabilizing coil, and a neutral wire of the power grid distribution line is connected through the incoming line side terminal and connected to the outgoing line side terminal through a controlled switch to form a bypass; the voltage regulating and stabilizing coil includes an input winding and an output winding, and the input winding is provided with one or several input terminals; a power element is arranged on each input terminal, and the power element is used to connect or disconnect the circuit connection of each input terminal or the bypass of the voltage regulating and stabilizing coil. The intelligent controller is used to monitor the input voltage and control each power element to be in a starting state or a stopping state according to the input voltage. The output terminal of the output winding of the voltage regulating and stabilizing coil is connected to the outgoing line side terminal.

[0006] Principle and beneficial effects of the basic solution: A cost-effective solution with a short construction period and low coordination difficulty is provided, which is applicable to the rural power grid transformation to improve power supply capacity and voltage stability. The device is easy to install and maintain, without the need to erect additional lines, and is applicable to various power grid environments, with good versatility and adaptability; the additionally erected neutral line is used as a bypass output, and it can be output by the bypass when the load is light, and the device has no loss.

[0007] This technical solution combines a voltage regulating and stabilizing coil with real-time monitoring and intelligent regulation of the input voltage by an intelligent controller. When it is detected that the load is light, the power component can be controlled to connect the bypass and directly output by the bypass. When the load is heavy, the voltage regulating and stabilizing coil can be connected by controlling the power component to output a stable voltage. In addition, by setting multiple input terminals on the voltage regulating and stabilizing coil, the device can also automatically adapt to input voltages of different levels and output stable and reliable voltages. The automatic voltage regulation is realized through the intelligent controller, reducing manual intervention and significantly reducing the operation and maintenance costs.

[0008] As an implementable preferred solution, the power component is one of an AC contactor, a relay, a solid-state relay or a thyristor.

[0009] As an implementable preferred solution, it further includes an overcurrent protector, and the overcurrent protector is arranged on the outgoing line side for monitoring the device current and providing open-circuit protection when the line current exceeds the rated value.

[0010] As an implementable preferred solution, it further includes a switching element, and the switching element is arranged on the incoming line side.

[0011] As an implementable preferred solution, the switching element is one of a micro fuse, a molded case circuit breaker, a disconnect switch, a fuse switch or a fuse.

[0012] As an implementable preferred solution, it further includes a fuse for quickly cutting off the circuit when an overload or short-circuit fault occurs in the circuit.

[0013] As an implementable preferred solution, it further includes an overvoltage protector, and the overvoltage protector is arranged on the outgoing line side for monitoring the voltage and providing open-circuit protection when overvoltage appears on the output side.

[0014] As an implementable preferred solution, the components of the device are connected by copper wires. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the primary circuit of a circuit for an intelligent voltage regulating device for stabilizing voltage.

[0016] Figure 2It is a schematic diagram of the secondary circuit (control loop) of a circuit for an intelligent voltage regulating device used to stabilize voltage. Specific embodiments

[0017] The technical solution of the present application will be further described in detail through specific embodiments as follows:

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection (including various forms of mechanical connections, such as couplings or gear pairs, etc.), or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0019] An intelligent voltage regulating device for stabilizing voltage changes the original "one live wire and one neutral wire" distribution line on the power supply side to "two live wires", and in addition, another neutral wire is erected, so that the configuration of the distribution line becomes "two live wires and one neutral wire", so as to be able to adapt to more complex voltage regulation and load balancing requirements. It includes a voltage regulating and stabilizing coil, an intelligent controller, an overload protector, power components, switching components, an incoming line side terminal, and an outgoing line side terminal. It is preferred that copper wires are used to connect between the components.

[0020] The power components are used to connect or disconnect the circuit connections of each input terminal of the voltage regulating and stabilizing coil BK. The number of them is the same as the number of input terminals to adapt to different voltage inputs. In this embodiment, it includes four power components KM1, KM2, KM3, and KM4. The power components can be one of an AC contactor, a relay, a solid state relay, or a thyristor.

[0021] Refer to Figure 1 , the voltage regulating and stabilizing coil BK is used to convert input voltages of different levels into a stable output voltage, including an input winding and an output winding. The input winding includes one or several input terminals (taps), and each input terminal is provided with a power component. The number and positions of the input terminals can be set according to actual needs. In this embodiment, the input winding includes two input terminals, which are evenly distributed on the input winding and are respectively provided with KM2 and KM3, so as to perform voltage regulation of two different levels.

[0022] In other embodiments, the voltage regulating and stabilizing coil can be set to various combinations according to actual situations, such as a combination of multiple input terminals and one output terminal, a combination of one input terminal and multiple output terminals, or a combination of multiple input terminals and multiple output terminals.

[0023] Refer to Figure 2, the power component is connected to each control level output terminal of the intelligent controller. The intelligent controller is used to monitor the input voltage and intelligently adjust the start and stop of the power component, thereby adjusting the working state of the voltage regulating and stabilizing coil BK to ensure stable output voltage. In this embodiment, the intelligent controller adopts a voltage controller with the model number PVKZQ-3.

[0024] In this embodiment, KM4 is started, and the power component KM2 is started so that the input current passes through the coil of the 1 / 2 of the input winding of the voltage regulating and stabilizing coil BK, and the power component KM3 is started so that the input current passes through all the coils of the input winding of the voltage regulating and stabilizing coil BK, thereby realizing voltage regulation of different levels by adjusting the working state of the voltage regulating and stabilizing coil BK.

[0025] The overcurrent protector PH is used to monitor the device current and the output side voltage. When the line current exceeds the rated value, it provides open circuit protection and can be automatically reset with a time delay. In one embodiment, the overcurrent protector is arranged on the zero line of the outgoing line side terminal.

[0026] It also includes several fuses. In this embodiment, three fuses are set, namely FU1, FU2, and FU3, which are used to quickly cut off the circuit when an overload or short circuit fault occurs in the circuit, thereby protecting other components in the circuit from damage.

[0027] The switching element QF serves as the main switch of the entire device and is used to control the on and off of the power supply of the voltage regulating device. The switching element can be selected from a micro fuse, a molded case circuit breaker, a disconnecting switch, a fuse switch, or a fuse, and is arranged on the incoming line side.

[0028] The incoming line side terminal and the outgoing line side terminal are used to connect the grid distribution line and the line-phase intelligent voltage regulating device to ensure the input and output of the current.

[0029] In this embodiment, two live wires and one zero line of the grid distribution line are connected through the incoming line side terminal of the device. After passing through the switching element QF, they are then connected to the power component.

[0030] The power components KM1, KM2, KM3, and KM4 are connected to the input terminals of the voltage regulating and stabilizing coil BK to form a current path. The zero line N1 is connected to the outgoing line side terminal through the power component. The power component KM1 is coaxially arranged on the incoming line side terminals L1 and N1. When the power component KM1 is started and the power component KM4 is stopped, the potential difference between the live wire L1 and the zero line N1 of the grid distribution line is directly used as the output voltage through the bypass.

[0031] The output terminal of the voltage regulating and stabilizing coil BK is connected to the outgoing line side terminal of the device through the overload protector, and finally a stable voltage is output.

[0032] It also includes an overvoltage protector KV, which is connected in parallel to the outgoing side terminals and is used to protect the equipment or circuit from damage caused by overvoltage (such as surges, spikes or continuous high voltages).

[0033] When the power grid distribution line is connected to the line-phase intelligent voltage regulating device, the switching element acts as the main switch to ensure the safety of the circuit. The intelligent controller (PVKZQ-3 voltage controller) continuously monitors the input voltage level. Once it detects that the voltage fluctuation exceeds the preset range, it will intelligently start or stop the power element, thereby changing the working state of the voltage regulating and stabilizing coil BK. The voltage regulating and stabilizing coil BK adjusts its output voltage according to the instructions of the intelligent controller to ensure that the voltage received by the end user is stable and reliable. At the same time, the overload protector plays a protective role throughout the process to avoid circuit damage caused by overcurrent. The additionally installed neutral line is used as a bypass output. Under light load conditions, it can be output through the bypass, and the device has no loss.

[0034] The above content is only an embodiment of the present utility model. Common knowledge such as specific structures and characteristics known in the solution is not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the utility model belongs before the application date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, complete and implement this solution in combination with their own abilities. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners and the like described in the specification can be used to interpret the content of the claims.

Claims

1. An intelligent voltage regulating device for stabilizing voltage, characterized in that: It includes an intelligent controller, an electric power element, a voltage regulating and stabilizing coil, an incoming line terminal and an outgoing line terminal; two live wires of a power distribution line of a power grid are connected through the incoming line terminal to the voltage regulating and stabilizing coil, and a neutral wire of a power distribution line is connected through the incoming line terminal to the outgoing line terminal through the electric power element to form a bypass; the voltage regulating and stabilizing coil includes an input winding and an output winding, and the input winding is provided with one or more input terminals; each input terminal is provided with an electric power element, and the electric power element is used to connect or disconnect the circuit connection of each input terminal or bypass of the voltage regulating and stabilizing coil, and the intelligent controller is used to monitor the input voltage, and control each electric power element to be in a start state or a stop state according to the input voltage, and the output terminal of the output winding of the voltage regulating and stabilizing coil is connected to the outgoing line terminal.

2. The intelligent voltage regulating device for stabilizing voltage according to claim 1, characterized in that: The power element is one of an AC contactor, a relay, a solid-state relay or a thyristor.

3. The intelligent voltage regulating device for stabilizing voltage according to claim 1, characterized in that: It also includes an overcurrent protector, which is arranged on the outgoing line side and is used to monitor the device current and provide line disconnection protection when the line current exceeds the rated value.

4. The intelligent voltage regulating device for stabilizing voltage according to claim 1, characterized in that: It also includes a switch element, which is arranged on the incoming line side.

5. The intelligent voltage regulating device for stabilizing voltage according to claim 4, characterized in that: The switch element is one of a miniature fuse, a molded case circuit breaker, an isolating switch, a fusible switch or a fuse.

6. The intelligent voltage regulating device for stabilizing voltage according to claim 1, characterized in that: It also includes fuses, which are used to quickly cut off the circuit when an overload or short circuit fault occurs in the circuit.

7. The intelligent voltage regulating device for stabilizing voltage according to claim 1, characterized in that: It also includes an overvoltage protector, which is arranged on the output side and is used to monitor the voltage and provide line break protection when overvoltage occurs on the output side.

8. The intelligent voltage regulating device for stabilizing voltage according to claim 1, characterized in that: Copper wires are used to connect the various components of the device.

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