Modularized electromagnetic power-saving device and method

Abstract

The invention provides a modularized electromagnetic power-saving device and method, and relates to the technical field of electromagnetic power saving.The modularized electromagnetic power-saving device is of a modularized structure and comprises an intelligent control system and a plurality of power-saving modules, and the power-saving modules are connected in parallel; and the intelligent control system controls the input and the exit of the node module, so that the input capacity of the whole power-saving equipment is matched with the actual system operation capacity. According to the equipment, the operation capacity of the whole power-saving equipment can be matched with the operation capacity of a system in real time, the optimal power-saving effect is achieved, the loss of the equipment can be reduced, the fault capacity rate of the whole power-saving equipment is improved by adopting a modular design, the maintenance is convenient, and the cost is low. Equipment maintenance and replacement can be carried out under the condition that the whole power-saving equipment is not shut down, and the fire safety can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic power saving, and particularly provides a modular electromagnetic power saving device and method. Background Art

[0002] Electromagnetic power saving technology mainly uses the principle of electromagnetic balance, and by using the principles of electromagnetic balance and electromagnetic voltage regulation, according to the load change situation and the actual parameters of the current power supply, it intelligently regulates the actual output power, so as to achieve complete matching. It can also timely transfer the excess energy to the power supply, improve the power factor, greatly reduce the losses on the transmission line, effectively improve the utilization rate of electric energy, increase the system capacity, improve the voltage fluctuation condition, reduce the ineffective losses of electrical equipment itself, extend the service life of the equipment, and finally achieve the comprehensive power saving of the system and realize the benefit of high-efficiency power saving.

[0003] At present, power saving devices mainly use a single electromagnetic core and are configured according to the transformer capacity. There is a situation where the actual operating capacity does not match the configured capacity. And in most cases, the actual operating capacity is less than 50% of the configured capacity. This brings problems such as poor operation effect and large losses of power saving devices. And once a fire occurs, it is difficult to rescue the entire device. Summary of the Invention

[0004] To solve the above problems, the present invention adopts a modular design concept, constructs by paralleling multiple power saving modules, and through an intelligent control module, dynamically switches the power saving modules in real time according to the system operating conditions, so that the overall power saving device achieves the optimal power saving effect, reduces its own losses, and further improves the fault tolerance rate of the overall power saving device. When a single power saving module fails, it does not affect the operation of the overall power saving device. And when a fire occurs, the module is designed as a quick-insert structure, and the burning module can be quickly pulled out, which can limit the scope of the fire and greatly reduce the difficulty of fire fighting.

[0005] The technical task of the present invention is to provide a modular electromagnetic power saving device and method for the above existing problems.

[0006] On the one hand, the present invention provides a modular electromagnetic power saving device. The device has a modular structure and includes an intelligent control system and a number of power saving modules, and the number of power saving modules are connected in parallel with each other; The intelligent control system controls the input and withdrawal of the node modules, so that the input capacity of the overall power saving device matches the actual system operating capacity, achieves the optimal power saving effect and reduces its own losses.

[0007] Furthermore, the intelligent control system includes three parts: a voltage and current sampling module, an embedded control system, and a relay output. Among them: The sampling module is responsible for collecting analog quantities of voltage, current, and temperature, and converting the analog quantities into digital quantities for use by the embedded system; The embedded control system is responsible for performing operations on operation data, setting protection thresholds and issuing protection actions, selecting power-saving efficiency levels of the system, and adjusting the number of operation modules; The relay output module is responsible for executing the actions of the embedded system, controlling the switching of the power-saving module and the fast protection of the system, and controlling the automatic switching of the power-saving levels of the power-saving module.

[0008] Furthermore, the device also includes a fast protection device, which is connected in parallel with the power-saving module. The fast protection device is constructed by thyristors. When the intelligent protection device detects that the node module is operating abnormally or the load exceeds the limit, the intelligent control system immediately issues a thyristor conduction command to switch the working current to the thyristor for circulation, thereby playing a role in protecting the power-saving module and achieving fast protection in the fault state.

[0009] Furthermore, the device also includes a bypass device, which is connected in parallel with the power-saving module. The bypass device is constructed by a mechanical contactor. The contactor is controlled by the intelligent control system to control the operation input and shutdown exit of the overall power-saving device, and achieve fast protection in the fault state.

[0010] Furthermore, the power-saving module includes 1 electromagnetic core, and the core is composed of a reactor wound in series and out of phase and a set of parallel fixed autotransformers combined on the same three-column iron core.

[0011] Furthermore, the series-connected and out-of-phase-wound reactor includes output phases: R, S, T, and input phases: r, s, t, and its winding method is as follows: The incoming line of phase R is first wound forward on the core of phase R, then wound backward on the core of phase S, and then wound forward on the core of phase R again and then led out to r; The incoming line of phase S is first wound forward on the core of phase S, then wound backward on the core of phase T, and then wound forward on the core of phase S again and then led out to s; The incoming line of phase T is first wound forward on the core of phase T, then wound backward on the core of phase R, and then wound forward on the core of phase T again and then led out to t.

[0012] Furthermore, the parallel fixed autotransformer is configured with 3 switches, and the 3 switches are controlled by an actuator PLC to select fixed voltage regulation levels.

[0013] On the other hand, the present invention provides a modular electromagnetic power-saving method. The method adopts a modular structure, arranges several core electromagnetic power-saving cores in multiple power-saving modules respectively, constructs an overall power-saving device by connecting multiple power-saving modules in parallel, flexibly matches the capacity of the overall power-saving device according to the number of power-saving modules configured, and through an intelligent control system, dynamically switches the power-saving modules in real time according to the operating conditions of the circuit system, enabling the power-saving device to achieve the optimal power-saving effect, reducing its own losses, and further improving the fault tolerance rate of the overall power-saving device.

[0014] Furthermore, the intelligent control system comprehensively detects the operating state of the power-saving device through installed voltage, current, and temperature intelligent sensors; uploads information to the upper control system (such as a cloud platform) through a network (local network cable, 4G, 5G), and schedules the input and output of the overall power-saving device according to the commands of the upper control system.

[0015] Furthermore, the method can flexibly realize the input and output of the overall power-saving device and rapid protection in case of faults by configuring a bypass device, a rapid protection device, and an intelligent control system.

[0016] Compared with the prior art, a modular electromagnetic power-saving device and method of the present invention have the following outstanding beneficial effects: The present invention can realize the real-time matching of the operating capacity of the overall power-saving device with the system operating capacity, achieve the optimal power-saving effect, reduce its own losses, adopt a modular design, improve the fault capacity rate of the overall power-saving device, facilitate maintenance, enable equipment maintenance and replacement without shutting down the overall power-saving device, and improve fire safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the electromagnetic power-saving device of the present invention; Figure 2 is a schematic diagram of the intelligent control system in the present invention; Figure 3 is a schematic diagram of the magnetic core in the power-saving module of the present invention; Figure 4 is a schematic diagram of the power-saving module in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0019] As Figure 1As shown in the figure, a modular electromagnetic power-saving device is constructed with a 1000 kVA transformer capacity and a 200 kVA capacity power-saving module to form the overall power-saving device. The overall power-saving device consists of 5 power-saving modules, 1 bypass device, 1 fast protection device, and 1 intelligent control system.

[0020] The 5 power-saving modules are connected in parallel, and are also connected in parallel with the bypass device and the fast protection device; as Figure 3 , 4 shown, each power-saving module contains 1 advanced electromagnetic core, and the core is composed of a reactor wound in series and out-of-phase and a set of parallel fixed autotransformers combined on the same three-column iron core. After the three-phase current is input through RST, it is output from the rst terminal. The reactor wound in series and out-of-phase is as shown in Figure 3 . The R-phase incoming line is first wound forward on the R-phase core, then wound backward on the S-phase core, and then wound forward on the R-phase core again and then led out to r. The S-phase and T-phase are wound in the same way, and the T-phase and R-phase are wound in the same way. The parallel fixed autotransformer is as shown in Figure 4 . The fixed voltage regulation gear is selected through 3 switches.

[0021] The intelligent control system controls the input and withdrawal of the node module, so that the input capacity of the overall power-saving device matches the actual system operation capacity, achieving the optimal power-saving effect and reducing its own losses.

[0022] As Figure 2 shown, the intelligent control system includes a voltage and current sampling module, an embedded control system, and a relay output. Among them: The sampling module is responsible for collecting analog quantities of operating voltage, current, and temperature, and converting the analog quantities into digital quantities for use by the embedded system; The embedded control system is responsible for performing operations on operating data, setting protection thresholds and issuing protection actions, selecting the gear of the system power-saving efficiency, and adjusting the number of operating modules; The relay output module is responsible for executing the actions of the embedded system, controlling the switching of the power-saving module and the fast protection of the system, and controlling the automatic switching of the power-saving gear of the power-saving module.

[0023] The device also includes a fast protection device, which is connected in parallel with the power-saving module. The fast protection device is constructed with thyristors. When the intelligent protection device discovers that the node module is working abnormally or the load is over-limit, the intelligent control system immediately issues a thyristor conduction command to switch the working current to the thyristor to flow, thereby playing a role in protecting the power-saving module and achieving fast protection in the fault state.

[0024] The device also includes a bypass device, which is connected in parallel with the power-saving module. As Figure 1 , 3, as shown in Figure 4, the bypass device is constructed by a mechanical contactor, and the contactor is controlled by an intelligent control system to control the operation input and shutdown exit of the overall power-saving device, achieving rapid protection in case of a fault.

[0025] The overall power-saving device is equipped with a display device, buttons, etc. The operation information of the device is displayed through the display device, and functions such as the input and exit of the device are realized through the buttons.

[0026] The capacity of the overall power-saving device is flexibly matched according to the number of power-saving modules configured in the module, and through the intelligent control system, the power-saving modules are dynamically switched in real time according to the operating conditions of the circuit system, enabling the power-saving device to achieve the optimal power-saving effect, while reducing its own losses and further improving the fault tolerance rate of the overall power-saving device.

[0027] The intelligent control system comprehensively detects the operating state of the power-saving device through the installed voltage, current, and temperature intelligent sensors; uploads the information to the upper control system (cloud platform, etc.) through the network (local network cable, 4G, 5G), and schedules the input and withdrawal of the overall power-saving device according to the commands of the upper control system.

[0028] The above-described embodiments are only relatively preferred specific implementation manners of the present invention, and the ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular electromagnetic power-saving device, characterized in that, The device is of modular structure, including an intelligent control system and several power-saving modules, and the several power-saving modules are connected in parallel with each other; The intelligent control system controls the input and withdrawal of the node modules to make the input capacity of the overall power-saving device match the actual system operation capacity; The intelligent control system includes three parts: a voltage and current sampling module, an embedded control system and a relay output. Among them: The sampling module is responsible for collecting analog quantities of operating voltage, current and temperature, and converting the analog quantities into digital quantities for use by the embedded system; The embedded control system is responsible for performing operations on operating data, setting protection thresholds and issuing protection actions, selecting the gear of the system power-saving efficiency, and adjusting the number of operating modules; The relay output module is responsible for executing the actions of the embedded system, controlling the switching of the power-saving modules and the rapid protection of the system, and controlling the automatic switching of the power-saving gears of the power-saving modules.

2. The modular electromagnetic power-saving device according to claim 1, characterized in that, The device also includes a rapid protection device, which is connected in parallel with the power-saving modules; The rapid protection device is constructed by thyristors. When the intelligent protection device finds that the node module is working abnormally or the load is over-limit, the intelligent control system immediately issues a thyristor conduction command to switch the working current to flow through the thyristors.

3. The modular electromagnetic power-saving device according to claim 1, characterized in that, The device also includes a bypass device, which is connected in parallel with the power-saving modules; The bypass device is constructed by a mechanical contactor. The contactor is controlled by the intelligent control system to control the operation input and shutdown withdrawal of the overall power-saving device.

4. A modular electromagnetic power-saving device according to claim 1, characterized in that, There is 1 electromagnetic core in the power-saving module. The core is composed of a reactor wound in series and out of phase and a set of parallel fixed autotransformers combined on the same three-column iron core.

5. A modular electromagnetic power-saving device according to claim 4, characterized in that The series-connected and out-of-phase-wound reactor includes output phases: R, S, T, and input phases: r, s, t. Its winding method is as follows: The incoming line of phase R is first wound forward on the core of phase R, then wound backward on the core of phase S, and then wound forward on the core of phase R again and then led out to r; The incoming line of phase S is first wound forward on the core of phase S, then wound backward on the core of phase T, and then wound forward on the core of phase S again and then led out to s; The incoming line of phase T is first wound forward on the core of phase T, then wound backward on the core of phase R, and then wound forward on the core of phase T again and then led out to t.

6. A modular electromagnetic power-saving device according to claim 4, characterized in that, The parallel fixed autotransformer is configured with 3 switches, and the 3 switches are controlled by an actuator PLC to select fixed voltage regulation gears.

7. A modular electromagnetic power-saving method based on the device according to any one of claims 1-6, characterized in that, The method adopts a modular structure, arranges several electromagnetic cores in multiple power-saving modules respectively, constructs an overall power-saving device by connecting multiple power-saving modules in parallel, the capacity of the overall power-saving device is matched according to the number of power-saving modules configured in the module, and through the intelligent control system, the power-saving modules are dynamically switched on and off in real time according to the operating conditions of the circuit system.

8. A modular electromagnetic power-saving method according to claim 7, characterized in that, The intelligent control system comprehensively detects the operating state of the power-saving device through installed voltage, current and temperature intelligent sensors; uploads information to the upper control system through the network, and schedules the input and withdrawal of the overall power-saving device according to the commands of the upper control system.

9. A modular electromagnetic power-saving method according to claim 8, characterized in that, The method realizes the input and withdrawal of the overall power-saving device and the rapid protection in case of faults by configuring a bypass device, a rapid protection device and an intelligent control system.

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