Reactor control system and reactor control method

Abstract

The invention relates to a reactor control system and a reactor control method. The electric reactor control system comprises a data acquisition device, an electric reactor adjusting device, a harmonic suppression device and a control device which is in communication connection with the data acquisition device, the electric reactor adjusting device and the harmonic suppression device. The data acquisition equipment is used for acquiring electrical parameter information during operation of the power grid; the electric reactor adjusting equipment is used for adjusting the operation state of the electric reactor so as to carry out reactive compensation on the power grid; the harmonic suppression equipment is used for filtering harmonic waves in a power grid; the control equipment is used for controlling the operation of the reactor adjusting equipment according to the first operation parameter so as to adjust the operation state of the reactor; and controlling the harmonic suppression equipment to operate according to a second operating parameter determined according to the first operating parameter and the electrical parameter information so as to filter the harmonic waves in the power grid. By adopting the method, the operation flexibility of a reactor control system can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of power system control, and in particular to a reactor control system and a reactor control method. Background Art

[0002] With the development of power systems and the widespread application of power electronic equipment in modern industry, energy, transportation and other fields, the load characteristics of power grids have gradually become more complex. Reactors, as a common power equipment, are used in power systems to regulate voltage, limit short-circuit current and suppress harmonics.

[0003] Reactors are widely used in reactive power compensation, harmonic filtering and grid-connected equipment in power grids to improve power quality and grid stability. However, when dealing with complex and dynamic power loads in modern power grids, traditional reactor control strategies are difficult to flexibly respond to load changes and harmonic pollution, which reduces the operating performance of the power grid. Summary of the invention

[0004] Based on this, it is necessary to provide a reactor control system and a reactor control method that can improve the operating flexibility of the reactor control system in response to the above technical problems.

[0005] In a first aspect, the present application provides a reactor control system, the reactor control system comprising a data acquisition device, a reactor adjustment device, a harmonic suppression device, and a control device respectively connected to the data acquisition device, the reactor adjustment device, and the harmonic suppression device for communication;

[0006] Data acquisition equipment, used to collect electrical parameter information during grid operation;

[0007] Reactor adjustment equipment, used to adjust the operating state of the reactor to perform reactive power compensation on the power grid;

[0008] Harmonic suppression equipment, used to filter harmonics in the power grid;

[0009] A control device is used to obtain the electrical parameter information, and when it is determined according to the electrical parameter information that the power grid meets the reactive power compensation condition and the harmonic suppression condition, determine a first operating parameter for reactive power compensation for the power grid based on the electrical parameter information; determine a second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter; control the operation of the reactor adjustment device according to the first operating parameter to adjust the operating state of the reactor; and control the operation of the harmonic suppression device according to the second operating parameter to filter the harmonics in the power grid.

[0010] In some embodiments, the data acquisition device includes a current sensing unit, a voltage sensing unit, a temperature sensing unit, and a harmonic analysis sensing unit, which are respectively connected to the control device for communication:

[0011] The current sensing unit is used to monitor and collect current information passing through the reactor;

[0012] The voltage sensing unit is used to monitor and collect voltage change information of the power grid;

[0013] The temperature sensing unit is used to monitor and collect temperature information inside the reactor and the reactor adjustment device;

[0014] The harmonic analysis sensor unit is used to detect and collect harmonic information in the power grid;

[0015] The control device is used to determine whether the power grid meets reactive power compensation conditions and harmonic suppression conditions according to the current information, voltage change information, temperature information and harmonic information.

[0016] In some of the embodiments, the reactor adjustment device includes a power electronic control unit and a power adjustment circuit connected to the power electronic control unit;

[0017] The control device is in communication connection with the power electronic control unit, and is used for controlling the power electronic control unit to adjust the output parameters of the reactor based on the power regulation circuit through a pulse width modulation or frequency modulation control signal.

[0018] In some of the embodiments, the harmonic suppression device includes a passive filtering unit and an active filtering unit respectively communicatively connected to the control device;

[0019] The passive filtering unit is used to filter low-frequency harmonics in the power grid whose harmonic frequencies are within a preset low-frequency range;

[0020] The active filtering unit is used to filter high-frequency harmonics in the power grid whose harmonic frequencies are within a preset high-frequency range;

[0021] The control device is used to control the operation of the passive filter unit and the active filter unit according to the second operation parameter, and filter the low-frequency harmonics and high-frequency harmonics in the power grid.

[0022] In some of the embodiments, the harmonic suppression device further includes an active harmonic filtering unit communicatively connected to the data acquisition device, the passive filtering unit, and the active filtering unit, respectively;

[0023] The active harmonic filtering unit is used to adjust the filtering frequencies of the passive filtering unit and the active filtering unit according to the harmonic information of the power grid collected by the data collection device.

[0024] In some of these embodiments, the system further includes a heat dissipation device communicatively connected to the control device;

[0025] The heat dissipation device is used to perform heat dissipation processing on the reactor;

[0026] The control device is used to determine a heat dissipation strategy for performing heat dissipation treatment based on the temperature information when it is determined that the reactor and / or the reactor adjustment device meet the heat dissipation conditions according to the temperature information; and control the heat dissipation device to perform heat dissipation treatment on the reactor and / or the reactor adjustment device according to the heat dissipation strategy.

[0027] In some of these embodiments, the control device includes a protection unit;

[0028] The protection unit is used to determine a protection strategy for the operation protection mechanism of the reactor based on the current information, the voltage change information and / or the temperature information when it is determined that the reactor meets the protection conditions according to the current information, the voltage change information and / or the temperature information; and control the operation of the reactor adjustment device according to the protection strategy.

[0029] In some of these embodiments, the control device includes a communication unit;

[0030] The communication unit is configured with multiple types of communication protocols, which are used to establish a communication connection with a remote terminal based on each of the communication protocols, and to generate a monitoring interface of the reactor at the remote terminal according to the operating status of the reactor, wherein the monitoring interface is used to display the operating status of the reactor and various key parameter information.

[0031] In some of these embodiments, the control device further includes an alarm unit;

[0032] The alarm unit is connected to the communication unit and is used to perform fault detection on the reactor according to the electrical parameter information; when it is determined that the reactor has an operating fault, fault alarm information is generated based on the fault condition of the reactor, and the fault alarm information is sent to the communication unit;

[0033] The communication unit is used to transmit the fault alarm information to the remote terminal, and the remote terminal issues a fault alarm for the reactor.

[0034] In a second aspect, the present application also provides a reactor control method, the method comprising:

[0035] Obtain electrical parameter information during grid operation;

[0036] In a case where it is determined according to the electrical parameter information that the power grid satisfies the reactive power compensation condition and the harmonic suppression condition, determining a first operating parameter for reactive power compensation for the power grid based on the electrical parameter information;

[0037] Determining, according to the electrical parameter information and the first operating parameter, a second operating parameter for harmonic suppression of the power grid;

[0038] Controlling the operation of the reactor adjustment device according to the first operating parameter, the reactor adjustment device being used to adjust the operating state of the reactor to perform reactive power compensation on the power grid;

[0039] The harmonic suppression device is controlled to operate according to the second operating parameter, and the harmonic suppression device is used to filter the harmonics in the power grid.

[0040] In the above reactor control system and reactor control method, the control device can obtain the electrical parameter information of the power grid in real time through the data acquisition device, and determine whether the power grid meets the reactive compensation condition and the harmonic suppression condition according to the electrical parameter information. When it is determined that the power grid meets the reactive compensation condition and the harmonic suppression condition, the control device can first determine the first operating parameter for reactive compensation for the power grid based on the electrical parameter information, and then determine the second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter, and control the operation of the electric controller adjustment device according to the first operating parameter to adjust the operating state of the reactor, and control the operation of the harmonic suppression device according to the second operating parameter to filter the harmonics in the power grid. When determining the second operating parameter, by considering the impact that the first operating parameter used in reactive compensation may have on the power grid harmonics, the matching of the second operating parameter with the actual operation scenario of the power grid can be effectively improved. No matter what changes occur in the load of the power grid, the control device can accurately perform reactive compensation on the power grid through the first operating parameter, and filter the harmonics of the power grid through the second operating parameter, which effectively improves the operation flexibility of the reactor control system and further improves the operation performance of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a structural block diagram of a reactor control system in some embodiments;

[0042] Figure 2 It is a structural block diagram of a data acquisition device in some embodiments;

[0043] Figure 3 is a structural block diagram of a reactor adjustment device in some embodiments;

[0044] Figure 4 Schematic diagram of the structure of a magnetically controlled reactor in some embodiments;

[0045] Figure 5 A schematic diagram of a connection circuit of a magnetically controlled reactor in some embodiments;

[0046] Figure 6 is a structural block diagram of a harmonic suppression device in some embodiments;

[0047] Figure 7 is a structural block diagram of a harmonic suppression device in some other embodiments;

[0048] Figure 8 is a structural block diagram of a reactor control system in some other embodiments;

[0049] Fig. 9 is a structural block diagram of a reactor control system in some other embodiments;

[0050] Fig.10 is a flow chart of a reactor control method in some embodiments;

[0051] Fig.11 is a structural block diagram of a reactor control device in some embodiments;

[0052] Fig.12 1 is a diagram of the internal structure of a computer device in some embodiments. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] In some embodiments, Figure 1 As shown, a reactor control system is provided, including a data acquisition device 101, a reactor adjustment device 102, a harmonic suppression device 103, and a control device 104 which is communicatively connected to the data acquisition device 101, the reactor adjustment device 102, and the harmonic suppression device 103 respectively.

[0055] The data acquisition device 101 is a system device for real-time monitoring of the working conditions of the reactor and collecting the electrical parameters of the power grid. It can be understood that the electrical parameters may also include the working parameters of the reactor, such as the current, voltage, temperature, power factor and operating frequency of the reactor. The reactor adjustment device 102 is a system device for adjusting the operating state of the reactor to perform reactive power compensation on the power grid. For example, the reactor adjustment device 102 can perform real-time control on the operating mode and output current of the reactor.

[0056] The harmonic suppression device 103 is a system component for filtering harmonics in the power grid, and can filter specific harmonics in the power grid, such as high-frequency harmonics and / or low-frequency harmonics.

[0057] The control device 104 is a system control device with logic processing capabilities, which can be a high-performance microcontroller (MCU) or a digital signal processor (DSP). The control device 104 can be pre-installed with a variety of intelligent algorithms to achieve real-time control of the operating state of the reactor. The intelligent algorithms include but are not limited to fuzzy control, proportional integral differential (PID) control, adaptive control, and predictive control algorithms based on big data analysis.

[0058] Specifically, the control device 104 can obtain electrical parameter information of the power grid during operation based on the data acquisition device 101. When it is determined that the power grid meets the reactive power compensation conditions and the harmonic suppression conditions based on the electrical parameter information, the control device 104 determines the first operating parameter for reactive power compensation for the power grid based on the electrical parameter information. According to the electrical parameter information and the first operating parameter, the control device 104 determines the second operating parameter for harmonic suppression for the power grid. The reactor adjustment device 102 is controlled to operate according to the first operating parameter to adjust the operating state of the reactor. The harmonic suppression device 103 is controlled to operate according to the second operating parameter to filter the harmonics in the power grid.

[0059] Among them, the reactive power compensation condition is a preset judgment condition used to determine whether the power grid needs to perform reactive power compensation. For example, by determining whether the power grid has a reactive power shortage or surplus, it is determined whether the power grid meets the reactive power compensation condition. If the power grid meets the reactive power compensation condition, it means that the power grid currently needs to perform reactive power regulation. By adjusting the reactive power, the power factor of the power grid is close to 1 to reduce the power grid loss.

[0060] The harmonic suppression condition is a preset judgment condition used to determine whether the power grid needs to perform harmonic filtering. For example, it can be determined whether the power grid meets the harmonic suppression condition by judging whether the harmonic content of the power grid is too high. If the power grid meets the harmonic suppression condition, it means that the power grid currently needs to perform harmonic filtering to suppress the interference of harmonics on the power system.

[0061] The first operating parameter is an operating parameter used to control the operation of the reactor adjustment device 102 to adjust the operating state of the reactor and realize reactive power regulation. For example, the first operating parameter may be an operating inductive reactance value of the reactor.

[0062] The second operating parameter is an operating parameter used to control the operation of the harmonic suppression device 103 to filter specific harmonics in the power grid. For example, the second operating parameter may be an operating parameter of the harmonic suppression device, such as an operating current and a frequency.

[0063] In the above embodiment, the control device can obtain the electrical parameter information of the power grid in real time through the data acquisition device, and determine whether the power grid meets the reactive compensation condition and the harmonic suppression condition according to the electrical parameter information. When it is determined that the power grid meets the reactive compensation condition and the harmonic suppression condition, the control device can first determine the first operating parameter for reactive compensation for the power grid based on the electrical parameter information, and then determine the second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter, and control the operation of the electric controller adjustment device according to the first operating parameter to adjust the operating state of the reactor, and control the operation of the harmonic suppression device according to the second operating parameter to filter the harmonics in the power grid. When determining the second operating parameter, by considering the impact of the first operating parameter used in reactive compensation on the power grid harmonics, the matching of the second operating parameter with the actual operation scenario of the power grid can be effectively improved. No matter what changes occur in the load of the power grid, the control device can accurately perform reactive compensation on the power grid through the first operating parameter, and filter the harmonics of the power grid through the second operating parameter, which effectively improves the operation flexibility of the reactor control system and further improves the operation performance of the power grid.

[0064] In some embodiments, Figure 2 As shown, the data acquisition device 101 includes a current sensing unit 201 , a voltage sensing unit 202 , a temperature sensing unit 203 , and a harmonic analysis sensing unit 204 , which are respectively connected to the control device 104 for communication.

[0065] The current sensing unit 201 is a device unit for monitoring and collecting current information passing through the reactor, and can monitor the current passing through the reactor. It can be understood that the current sensing unit 201 can be a current sensor, which can not only monitor the current of the main circuit, but also detect the harmonic components contained therein.

[0066] The voltage sensing unit 202 is a device unit for monitoring and collecting voltage variation information of the power grid, and can detect voltage fluctuations of the power grid. It can be understood that the voltage sensing unit 202 can be a voltage sensor.

[0067] The temperature sensing unit 203 is a device unit for monitoring and collecting temperature information inside the reactor and the reactor adjustment device, and can detect the temperature state inside the reactor and the temperature state of the reactor adjustment device. It can be understood that the temperature sensing unit 203 can be a temperature sensor.

[0068] The harmonic analysis sensing unit 204 is a device unit for detecting and collecting harmonic information in the power grid, and can detect the harmonic content in the power grid and the amplitude of harmonics of different frequencies to ensure that the system can eliminate harmonic interference in real time. It can be understood that the harmonic analysis sensing unit 204 can be a harmonic analysis sensor.

[0069] Specifically, the control device 104 can determine whether the power grid meets the reactive power compensation and harmonic suppression conditions based on the current information collected by the current sensing unit 201, the voltage change information collected by the voltage sensing unit 202, the temperature information collected by the temperature sensing unit 203, and the harmonic information collected by the harmonic analysis sensing unit 204.

[0070] In the above embodiment, by setting up a current sensing unit, a voltage sensing unit, a temperature sensing unit and a harmonic analysis sensing unit, a high-precision sensing system can be built in the reactor control system to detect the operating status of the power grid and the working status of the reactor in real time, providing real-time data support for the intelligent control of the control equipment.

[0071] In some embodiments, Figure 3 As shown, the reactor adjustment device 102 includes a power electronic control unit 301 and a power adjustment circuit 302 connected to the power electronic control unit 301 .

[0072] The power electronic control unit 301 is a control unit that can control the on and off of the power electronic switch element of the reactor to achieve accurate control of the current output of the reactor.

[0073] In some of the embodiments, the power electronic control unit 301 may be composed of an insulated gate bipolar transistor (IGBT), a metal oxide semiconductor field effect transistor (MOSFET) or a thyristor, and may control the rapid switching and regulation of the reactor.

[0074] Among them, IGBT / MOSFET components: have high-frequency switching capabilities and can achieve fast on and off in nanoseconds, thereby ensuring that the reactor can quickly respond to the needs of the power grid when the load changes. Through the instructions issued by the control device, the component can accurately adjust the output of the reactor, thereby ensuring that the role of the reactor in the power grid reaches the best state.

[0075] Thyristor: Mainly used for high-power switching control of reactors, with strong load handling capabilities. By adjusting the reactance value of the reactor, the system can dynamically adjust the reactive power and voltage of the power grid to ensure the smooth operation of the power system.

[0076] Among them, the power regulation circuit 302 is a regulation circuit used to regulate the output power of the inductor. The power regulation circuit 302 can be combined with the power electronic control unit 301 to automatically adjust the output power of the inductor according to changes in the grid load, ensuring that stable power output can be provided even in an unstable grid.

[0077] Specifically, the control device can be connected to the power electronic control unit 301 for communication, and control the power electronic control unit 301 to adjust the output parameters of the reactor based on the power regulation circuit 302 through a pulse width modulation (PWM) or frequency modulation control signal, such as adjusting the output power and output current of the reactor.

[0078] In some embodiments, the reactor may be a single-phase magnetically controlled reactor, such as Figure 4 As shown, the main core of the magnetically controlled reactor (MCR) is split into two halves, namely core 1 and core 2. Each main core is wound with a working winding and a control winding, namely a primary winding and a secondary winding. L1 and L2 are working windings, and L3 and L4 are control windings. The working winding is connected to the power system, and the control winding is connected to a DC control voltage source.

[0079] In power systems, Figure 5 As shown, the two working windings L1 and L2 of the MCR are connected in parallel to the working power supply, while the two control windings L3 and L4 are respectively connected in reverse parallel to the control power supply. The MCR in this embodiment is different from the traditional MCR circuit structure. It adopts a DC control voltage source with uncontrolled rectification, and adds an insulated gate bipolar transistor (IGBT) and a diode control circuit in each control winding loop. The control device can calculate the inductive reactive power that needs to be compensated by detecting the voltage and current signals after the capacitor bank is switched on and off in the power system, and further determine the saturation voltage required for the control winding. The control device controls the switch of the IGBT by outputting a pulse signal of a fixed pulse, thereby adjusting the saturation of the MCR to achieve the required working current and realize inductive reactive compensation. In the above embodiment, through the synergy of the electronic power control unit and the power regulation circuit, the precise adjustment and on-off operation of the reactor can be achieved, effectively improving the control accuracy and control efficiency of the reactor.

[0080] In some embodiments, Figure 6 As shown, the harmonic suppression device 103 includes a passive filtering unit 601 and an active filtering unit 602 which are respectively connected to the control device 106 for communication.

[0081] Among them, the passive filtering unit 601 is a filtering unit for filtering low-frequency harmonics in the power grid whose harmonic frequencies are in a preset low-frequency range. The passive filtering unit 601 can be composed of an inductor, a capacitor and a resistor, and can accurately filter low-order harmonics. For example, it can effectively eliminate common harmonics such as the 3rd, 5th, and 7th order. The preset low-frequency range is a preset range parameter for determining whether a harmonic is a low-frequency harmonic, which can be determined by the operator according to actual filtering requirements. It can be understood that the passive filtering unit 601 can be an LC filter, and the filtering effect is stable and reliable, suitable for long-term operation.

[0082] Among them, the active filter unit 602 is a filter unit for filtering high-frequency harmonics in the power grid whose harmonic frequencies are in a preset high-frequency range. The active filter unit 602 can generate a compensation signal opposite to the high-frequency harmonics of the power grid, for example, according to the high-frequency harmonic current detected in the power grid, a compensation current opposite to it is generated to eliminate the high-frequency harmonics. The preset high-frequency range is a preset range parameter for determining whether the harmonic is a high-frequency harmonic, which can be determined by the operator according to the actual filtering requirements. It can be understood that the active filter unit 602 can be an RC filter for further suppressing the high-frequency interference caused by harmonics.

[0083] Specifically, the control device may control the passive filter unit 601 and the active filter unit 602 to operate according to the second operating parameter, so as to filter the low-frequency harmonics and the high-frequency harmonics in the power grid.

[0084] In some of the embodiments, the control device can dynamically adjust the working state of the active filter unit 602 according to the second operating parameter, and activate the passive filter unit 601 to eliminate low-frequency harmonics.

[0085] In some of the embodiments, the passive filtering unit is an LC filter, and its core object is an LC resonant circuit, including an inductor (L) and a capacitor (C). In the LC filter, the harmonic frequency can be matched by adjusting the inductor reactance, and the resonant frequency can be changed by adjusting the capacitance value, thereby improving the suppression effect of the target harmonic. The LC filter mainly achieves filtering of low-frequency harmonics by adjusting filter parameters, such as the values ​​of inductance, capacitance and resistance. Specifically, the control device can detect the harmonic distribution in the power grid in real time through a data acquisition device, identify the main harmonic frequency, and determine the operating parameters of the LC filter according to the detected harmonic characteristics, wherein the operating parameters may include switch adjustment parameters or capacitance adjustment parameters and inductance adjustment parameters, etc. Based on the operating parameters, the LC filter is controlled to switch or adjust the values ​​of variable capacitance and inductance, so that the resonant frequency in the LC circuit matches the target low-frequency harmonic, thereby achieving optimal harmonic absorption.

[0086] In some of the embodiments, when the grid load changes or the harmonic spectrum characteristics change, the control device can determine the adjustment parameters of the LC resonant circuit according to the change information of the grid load or the spectrum characteristics change information, and automatically adjust the LC resonant circuit based on the adjustment parameters so that the LC filter can maintain effective filtering of low-frequency harmonics.

[0087] In some of the embodiments, the active filter unit is an active filter, which generates a compensation current opposite to the target harmonic current through a power electronic device, such as an IGBT or a MOSFET, thereby eliminating harmonics, and its control core is to control the power electronic switch and the injection of current in real time. Specifically, the data acquisition device determines the harmonic information in the power grid, and then uses methods such as fast Fourier transform (FFT) or instantaneous reactive power theory (PQ) theory to detect high-frequency harmonic information in the power grid current in real time, such as high-frequency harmonic components. The control device can calculate the amplitude, frequency and phase of the high-frequency harmonics based on the high-frequency harmonic information, generate a compensation signal with the same amplitude and opposite phase as the target harmonic, and control the IGBT or MOSFET switch action through PWM modulation based on the compensation signal to inject the compensation current into the power grid.

[0088] In some of the embodiments, when the grid load changes, the control device can dynamically adjust the parameters of the compensation current according to the new harmonic characteristics detected in real time to ensure continuous suppression of high-frequency harmonics.

[0089] In some of the embodiments, the control device is also pre-configured with a predictive control algorithm, which can call the predictive control algorithm to predict possible harmonic waveform changes based on the harmonic information obtained by real-time detection, obtain prediction results, determine a prediction compensation signal based on the prediction results, and control the operation of the active filter based on the prediction compensation signal to improve the filtering effect.

[0090] In the above embodiments, through the combined filtering process of the active filtering unit and the passive filtering unit, it is possible to effectively suppress multi-band harmonics in the power grid and improve the power factor of the power grid.

[0091] In some embodiments, Figure 7 As shown, the harmonic suppression device 103 further includes an active harmonic filtering unit 701 which is communicatively connected to the data acquisition device 101 , the passive filtering unit 601 , and the active filtering unit 602 , respectively.

[0092] The active harmonic filtering unit 701 can adjust the filtering frequencies of the passive filtering unit 601 and the active filtering unit 602 according to the harmonic information of the power grid collected by the data collection device 101 .

[0093] Specifically, the active harmonic filtering unit 701 can dynamically adjust the filtering frequencies of the passive filtering unit 601 and the active filtering unit 602 according to the harmonic information fed back by the harmonic analysis sensor unit, so that the harmonic suppression device 103 can automatically adjust the parameters of the filtering unit according to the operating status of the power grid, adapt to the harmonic distribution under different load conditions, and ensure stable power quality.

[0094] In some of the embodiments, the active harmonic filtering unit 701 can perform harmonic suppression on irregular harmonics. Specifically, the control device 104 can determine the harmonic components in the power grid through the data acquisition device 18801, calculate the harmonic signals that need to be compensated based on the harmonic components, and then control the active harmonic filtering unit 701 based on the harmonic signals to generate compensation signals that are opposite to the harmonics currently existing in the power grid, thereby actively offsetting the harmonics.

[0095] In some embodiments, Figure 8 As shown, the reactor control system further includes a heat dissipation device 801 which is communicatively connected to the control device 104 .

[0096] Among them, the heat dissipation device 801 is a hardware device for performing heat dissipation treatment on the reactor and the reactor adjustment device 102. The heat dissipation device 801 can be divided into air cooling heat dissipation device, liquid cooling heat dissipation device and heat pipe heat dissipation device according to different heat dissipation modes. Different heat dissipation modes correspond to different heat dissipation environments. Therefore, the control device 104 needs to determine the heat dissipation strategy for performing heat dissipation treatment based on the collected temperature information, and the heat dissipation strategy includes the heat dissipation device 801 to be used. For example, under high load or long-term working conditions, the liquid cooling heat dissipation device can provide a more stable and efficient heat dissipation effect. Therefore, when the control device 104 determines that the current high load situation is based on the temperature information, it can be determined that the corresponding heat dissipation strategy is a liquid cooling heat dissipation strategy, that is, the reactor is cooled by the liquid cooling heat dissipation device.

[0097] Specifically, the control device 104 may determine a heat dissipation strategy for performing heat dissipation processing based on the temperature information when it is determined that the reactor or the reactor adjustment device 102 meets the heat dissipation condition according to the temperature information, and control the heat dissipation device 801 to perform heat dissipation processing on the reactor and / or the reactor adjustment device 102 according to the heat dissipation strategy. The heat dissipation strategy is strategy information for instructing the heat dissipation device 801 to perform heat dissipation processing.

[0098] In some of the embodiments, the control device 104 can determine the temperature change of the reactor and the reactor adjustment device 102 based on the temperature information. When the temperature of the reactor and / or the reactor adjustment device 102 exceeds a preset temperature threshold, a heat dissipation strategy for performing heat dissipation treatment is determined based on the temperature of the reactor and / or the reactor adjustment device 102, and the heat dissipation device 801 is controlled to perform heat dissipation treatment on the reactor and / or the reactor adjustment device 102 according to the heat dissipation strategy.

[0099] In the above embodiment, the cooling efficiency can be dynamically adjusted according to the temperature conditions of the reactor and the reactor regulating device through the heat dissipation device. Since the temperature conditions can reflect the workload conditions of the reactor and the reactor regulating device, when the reactor and the reactor regulating device are working under high load, heat dissipation is forced through a heat dissipation strategy that matches them, which can effectively avoid a decrease in operating efficiency or damage due to overheating of the equipment, so that the equipment can still operate stably under harsh conditions.

[0100] In some embodiments, the control device comprises a protection unit.

[0101] Among them, the protection unit is a device unit that ensures the safe operation of the reactor and reduces the probability of damage to the reactor through a preset protection strategy. It can be understood that according to different protection strategies, the protection unit can be further divided into multiple sub-units. For example, an overload protection sub-unit, an overtemperature protection sub-unit, a short circuit protection sub-unit, an overvoltage protection sub-unit, etc., each sub-unit can execute a different protection strategy accordingly.

[0102] For example, the overload protection subunit can be used to execute the overload protection strategy, that is, when the overload protection subunit determines that the reactor has an overload current based on the current information, the current input of the reactor can be quickly cut off to prevent the equipment from being damaged due to overload.

[0103] The over-temperature protection subunit can be used to execute the over-temperature protection strategy, that is, when the over-temperature protection subunit determines that the reactor has an abnormal temperature based on the temperature information, it can immediately trigger a power reduction or shutdown operation to prevent the device from burning due to overheating.

[0104] The short-circuit protection subunit can be used to execute the short-circuit protection strategy. That is, when the short-circuit protection subunit determines that there is a short-circuit current in the reactor based on the current information, the operation of the reactor can be interrupted immediately to protect other devices in the power system from being affected.

[0105] The overvoltage protection subunit can be used to execute the overvoltage protection strategy. That is, when the overvoltage protection subunit determines based on the voltage information that the reactor has abnormal voltage fluctuations or the voltage exceeds the safety range, the working state of the reactor can be automatically adjusted immediately to ensure the stable operation of the power grid.

[0106] Specifically, when the protection unit determines that the reactor meets the protection conditions based on the current information, voltage change information and / or temperature information, it determines a protection strategy for the reactor operation protection mechanism based on the current information, voltage change information and / or temperature information; and controls the operation of the reactor regulating device according to the protection strategy.

[0107] Among them, the protection condition is a preset judgment condition used to determine whether the reactor needs to be protected. For example, the protection condition may be that the reactor has an overload current, or the reactor has an abnormal temperature, or the reactor has a short-circuit current, or the reactor has an abnormal voltage fluctuation, or the reactor voltage exceeds a safe range, etc.

[0108] In some of the embodiments, the protection unit can also implement an automatic reset function, that is, after the fault is eliminated, the protection unit can automatically control the reactor to resume normal working state without manual intervention, thereby improving the continuous operation capability of the reactor.

[0109] In the above embodiment, the multiple protection strategies in the protection unit cover various possible abnormal conditions such as current, temperature, voltage, etc., which can ensure the safe and reliable operation of the reactor in various complex environments and reduce the probability of failure of the reactor due to abnormalities such as overheating, overload, and overvoltage.

[0110] In some embodiments, the control device comprises a communication unit.

[0111] Among them, the communication unit is a device unit used to establish a communication channel with a remote terminal and communicate and interact with the remote terminal, which can realize functions such as remote monitoring, equipment status feedback and parameter adjustment, and operation data recording. The communication unit can be pre-configured with various types of communication protocols, and can communicate and connect with each remote terminal based on each communication protocol. The understandable communication protocols may include but are not limited to Modbus, CAN bus, Ethernet, wireless communication protocols, such as 4G / 5G, LoRa and other protocols. The remote terminal may include a host computer, a remote monitoring system or a cloud platform, etc.

[0112] Specifically, the communication unit can communicate with each remote terminal based on each communication protocol, and generate a monitoring interface of the reactor at the remote terminal according to the operating state of the reactor, wherein the monitoring interface is used to display the operating state of the reactor and various key parameter information. It can be understood that the various key parameter information may include data such as voltage, current, and power. The user can determine the operating state of the reactor and various key parameter information through the remote terminal, and keep track of the working condition of the reactor at any time.

[0113] In some of the embodiments, the user can configure or adjust the operating status and key parameters of the reactor based on the remote terminal. The communication unit can respond to the user's state adjustment or parameter adjustment operation on the reactor, obtain state adjustment information or parameter adjustment information, perform state adjustment control on the reactor or adjust the control parameters of the reactor, switch its working mode, etc., thereby enabling the user to remotely start and stop the reactor, adjust control parameters, and switch working modes, greatly improving the user's operation convenience.

[0114] In some of the embodiments, the communication unit also has a remote software upgrade function, that is, the user can download the latest control software or patch package through the remote server, and remotely upgrade the software in the control system based on the communication unit to ensure the latest functions and performance optimization of the system.

[0115] In the above embodiments, the communication unit exchanges data and remotely controls the remote terminal through a variety of industrial standard communication protocols, providing users with functions such as remote parameter setting and status monitoring, greatly improving user operation convenience and enhancing the operability of the control system.

[0116] In some of the embodiments, the reactor control system also includes a local control device, such as a local control panel, through which a user can view the operating status of the device in real time, manually control the operating mode and parameter settings of the reactor, and ensure that localized control can still be performed when the communication unit is abnormal, such as communication interruption or remote failure.

[0117] In some embodiments, the control device further comprises an alarm unit.

[0118] The alarm unit is a device unit used to warn maintenance personnel when a reactor fails. The alarm unit can analyze the operation of the reactor based on electrical parameter information, automatically detect or predict the fault or fault risk of the reactor, and send alarm information to the remote terminal through the communication unit to remind users to repair the reactor or replace related components, thereby reducing equipment downtime.

[0119] Specifically, the alarm unit can perform fault detection on the reactor according to the electrical parameter information, and when it is determined that the reactor has an operating fault, generate fault alarm information based on the fault condition of the reactor, and send the fault alarm information to the communication unit. When the communication unit receives the fault alarm information, it can transmit the fault alarm information to the remote terminal through the built-in communication protocol, and the remote terminal issues a fault alarm for the reactor.

[0120] In some of the embodiments, the alarm unit may also send a fault report to a remote terminal via the communication unit to help maintenance personnel handle abnormal fault conditions promptly and accurately.

[0121] In the above embodiment, the maintenance convenience of the control system can be effectively improved by using the alarm unit.

[0122] In some of the embodiments, the control device further includes a self-learning unit, which can realize the self-learning function, perform trend analysis based on the long-term operation data of the reactor, automatically adjust the control parameters, optimize the operation performance of the reactor, and ensure that the device can achieve the best working state under different working conditions. The self-learning unit can also record and analyze the historical data of different load conditions and harmonic interference, and automatically optimize the filter parameters, current control strategy and operation strategy of the cooling system through big data analysis.

[0123] In some of the embodiments, the housing of each device in the reactor control system has a dustproof, waterproof and anti-electromagnetic interference design, which can adapt to various industrial environments and ensure the stable operation of the equipment under harsh conditions.

[0124] In some embodiments, Fig. 9 As shown in the figure, a reactor control system is provided to improve the capabilities of reactive power compensation, harmonic suppression and power quality regulation in the power system. By combining modern power electronics technology and intelligent control algorithms, the reactor control system can dynamically adjust the operating state of the reactor, ensure the stable operation of the power grid under different load conditions, and effectively suppress harmonic interference. The entire system adopts a modular design, and the functional modules work in coordination with each other to achieve efficient, flexible and intelligent power grid operation management. The functions, structures and working principles of each module are described in detail below.

[0125] The reactor control system is composed of multiple main modules, and the overall architecture of the system includes the following functional modules: power electronic control unit 301, control device 104, sensor unit group 901, harmonic suppression device 103, reactive power compensation unit 902, and heat dissipation device 801.

[0126] Each functional module has specific functions and roles, and works together to ultimately achieve reactive power compensation and harmonic suppression of the power grid. The core of the reactor control system is to monitor the operating status of the power grid in real time, and obtain electrical parameters such as current, voltage, power factor and harmonic content through the sensor system. Based on these data, the control device 104 determines whether there is a reactive power gap or harmonic interference in the power grid, and sends instructions to the power electronic control unit 301 to dynamically adjust the operating status of the reactor. The harmonic suppression device 103 and the reactive power compensation unit 902 optimize the power quality within their respective functional ranges and improve the overall operating efficiency of the power grid.

[0127] The power electronic control unit 301 is the core of the entire reactor control system, and is mainly responsible for accurately regulating the operating state of the reactor. Through efficient power electronic devices, the system can quickly respond to grid changes and achieve automated control of reactive power compensation and harmonic suppression.

[0128] The electronic power control unit consists of the following working components:

[0129] Insulated Gate Bipolar Transistor 3011 (IGBT): A core switching element used in high voltage, high current applications that can quickly switch states at high voltage and high frequency to adjust the current flow in the reactor.

[0130] Field effect transistor 3012 (MOSFET): Suitable for high-speed switching operations in medium and low power applications, providing flexible load regulation capabilities, especially in light loads or frequent dynamic changes.

[0131] Silicon controlled rectifier 3013 (SCR): used to control key switch nodes in the circuit, especially suitable for ensuring smooth transition of current when starting and shutting down the reactor to prevent sudden changes in grid current.

[0132] Filter inductor and capacitor components 3014: These components are used to eliminate high-frequency harmonics in the current and reduce the fluctuation and loss of reactive power in the power grid by forming an LC filter network.

[0133] The power electronic control unit 301 adjusts the working state of switching elements such as IGBT and MOSFET according to the instructions issued by the control device 104. By adjusting the impedance of the reactor, the system can compensate for reactive power in real time and suppress high-frequency harmonics in the power grid. In addition, the unit can also adjust the output according to load changes to ensure that the system operates smoothly under different load conditions.

[0134] The control device 104 is the "brain" of the reactor control system, responsible for processing and analyzing all data and controlling the operation of other modules. The control device 104 can be a high-performance microcontroller (MCU) or a digital signal processor (DSP). Through the built-in intelligent algorithm, it can adaptively adjust the parameters of the reactor and other modules according to real-time data, such as real-time control of the operation mode and output current of the reactor to ensure the smooth operation of the power grid. At the same time, through the built-in multiple different algorithms, it can help the control device 104 to achieve optimal reactor control according to different grid load changes and power factor requirements.

[0135] After processing the data, the control device 104 generates corresponding control instructions and sends them to the power electronic control unit 301 and the reactive power compensation unit 902 to adjust the output power of the reactor and the state of the harmonic filter. The control decision unit has an extremely fast response speed and can make adjustments within milliseconds to cope with rapid changes in the power grid.

[0136] The control device 104 integrates a variety of intelligent control algorithms, including:

[0137] PID control algorithm: It adjusts the response behavior of the reactor through proportion, integration and differentiation to accurately control the reactive power of the power grid, achieve reactive power balance and dynamic voltage regulation of the power grid, and maintain voltage stability and power factor within the ideal range.

[0138] Fuzzy control algorithm: used to deal with uncertain factors in the power grid, especially suitable for situations where the load changes nonlinearly or the parameters are difficult to obtain accurately. In complex loads and uncertain environments, fuzzy control can respond to changes more flexibly, improve the robustness of the system, and ensure that the reactor can operate smoothly.

[0139] Adaptive control algorithm: By learning the historical data of power grid operation, the algorithm can gradually optimize the control parameters of the system according to the real-time changes in the power grid operation status, thereby improving the adaptability of the system under different loads and environments, and enhancing the system's ability to adapt to long-term changes in the power grid.

[0140] Neural network algorithm: This algorithm optimizes the control strategy based on historical operating data through a self-learning mechanism. It can continuously improve control accuracy for complex grid conditions and is particularly suitable for grids with multiple harmonic components and frequent load fluctuations.

[0141] The control device 104 includes a communication unit 1041 , a protection unit 1042 , and an alarm unit 1043 .

[0142] The communication unit 1041 can provide the reactor control system with a communication interface for data exchange with the outside world, such as a remote terminal and a remote monitoring system. The communication unit 1041 has built-in Modbus, CAN bus, Profibus, Ethernet, 4G / 5G, and LoRa wireless communication protocols. By connecting with the SCADA system on the remote terminal, the user can remotely monitor the operating status of the reactor in real time, adjust the parameters of the reactor control system, receive alarm information, and query historical data to achieve intelligent management.

[0143] The protection unit 1042 integrates protection strategies such as overcurrent, overheating, short circuit, and overvoltage. When the inductor operates abnormally, such as overtemperature, current overload, short circuit, voltage fluctuation, or voltage exceeding the normal range, the protection unit 1042 will immediately act according to the corresponding protection strategy to ensure the safety of the inductor and the power grid, such as cutting off the power supply, reducing the load, etc.

[0144] The alarm unit 1043 can send fault reports, fault alarm information, etc. to the remote monitoring center through the communication unit 1041 to help maintenance personnel deal with abnormal situations in a timely manner.

[0145] The sensor unit group 901 is the sensing unit of the entire reactor control system, responsible for collecting various operating parameters of the power grid in real time and transmitting these data to the control device 104 for analysis. The accuracy and sensitivity of the sensor system directly affect the response speed and control effect of the system.

[0146] The sensor unit group 901 includes the following sensors:

[0147] Current sensor 9011: used to monitor the current flowing through the reactor in real time to ensure that it operates within a reasonable range and prevent overcurrent. Current sensor 7011 can not only monitor the current of the main circuit, but also detect the harmonic components contained therein.

[0148] Voltage sensor 9012: used to measure the voltage fluctuation of the power grid, to ensure that the system can make timely adjustments when the voltage is too high or too low, to help the intelligent control module to adjust the output of the reactor in time and keep the power grid voltage stable.

[0149] Harmonic analysis sensor 9014: specially used to detect the harmonic content in the current and the harmonic distribution in the power grid. The sensor can analyze the frequency and amplitude of harmonics of different frequencies and provide them to the harmonic suppression module for processing.

[0150] Temperature sensor 9013: Installed around the core of the reactor and other key electronic components, it is responsible for monitoring the operating temperature of the reactor and switch components to ensure that the operating temperature of the equipment remains within a safe range and is not damaged by overheating. Temperature sensor 9013 can quickly capture temperature anomalies of the reactor. If the temperature exceeds the set range, the system will start the heat dissipation and protection functions, such as making timely decisions to reduce power or shut down based on temperature data.

[0151] The grid data continuously collected by the sensor unit group 901 is transmitted to the control device 104 via digital signals, and the latter makes real-time judgments based on these data. When excessive harmonics or abnormal reactive power are detected, the system will immediately take measures to compensate and suppress them.

[0152] The function of the harmonic suppression device 103 is to eliminate harmonic interference in the power grid, ensure the safe operation of power equipment, and improve the quality of power. Harmonic interference usually causes the quality of power grid power to deteriorate and affects the normal operation of other power-consuming equipment. The harmonic suppression device 103 includes two parts: active and passive filters 1031:

[0153] Active filter 1032 (APF): Dynamically generates compensation signals that are opposite to the grid harmonics through power electronic devices to eliminate high-frequency harmonics. The filter can monitor and compensate for multiple harmonics in the grid in real time.

[0154] Passive filter 1031 (LC filter): Passive filter 1031 is mainly used to filter out low-frequency harmonics in the power grid, such as the 3rd, 5th and 7th harmonics. The filtering effect is stable and reliable and suitable for long-term operation.

[0155] Active harmonic filter 1033: can dynamically adjust the filtering frequency according to the feedback of the harmonic analysis sensor 7014 to adapt to the harmonic distribution under different load conditions, improve the harmonic suppression effect, and ensure stable power quality.

[0156] When the harmonic sensor detects harmonics in the power grid, it will feed back the data to the control device 104. The control device 104 dynamically adjusts the working state of the active filter 1032 according to the amplitude and frequency of the harmonics, and activates the passive filter 1031 to eliminate low-frequency harmonics. The combination of the two can effectively suppress multi-band harmonics.

[0157] The reactive power compensation unit 902 is mainly used to adjust the reactive power of the power grid to improve the power factor and reduce the power grid loss. The unit adjusts the inductance value of the reactor to achieve accurate compensation of reactive power and help the power grid maintain a stable power factor.

[0158] The reactive power compensation unit 902 works in conjunction with the control device 104 to adjust the inductive reactance of the reactor according to the reactive power demand of the power grid. When insufficient or excessive reactive power is detected, the control device 104 issues an instruction to change the working state of the reactor through the reactive power compensation unit 902, thereby increasing or decreasing the output of reactive power. This adjustment process is continuous and can keep the power factor of the power grid within a set range under different load conditions. The reactive power compensation unit 902 has a fast response speed and high adjustment accuracy, which helps to maintain the voltage stability of the power grid and reduce the power loss caused by reactive power gaps.

[0159] Since the reactor control system involves a large number of high-power electronic components and equipment, heat dissipation protection is very important. In order to ensure that the system can operate stably for a long time under the condition of efficient heat dissipation, a heat dissipation device 801 is also configured in the reactor control system.

[0160] The heat dissipation device 801 includes three types of cooling: air cooling, liquid cooling and heat pipe cooling. The heat dissipation device 801 can automatically select an appropriate heat dissipation method according to the operating temperature of the reactor and the power electronic components to dissipate the heat of the reactor and the power electronic components. For example, under high load or long-term working conditions, the liquid cooling system can provide a more stable and efficient heat dissipation effect.

[0161] The working process of the intelligent reactor control switch is as follows:

[0162] Data collection: The sensor unit group 901 monitors the voltage, current, reactive power, harmonic content and other parameters in the power grid in real time, and sends these data to the control device 104.

[0163] Intelligent analysis and decision-making: After receiving the sensor data, the control device 104 analyzes the reactive power gap and harmonic interference level of the power grid according to a preset control algorithm, and makes corresponding compensation and adjustment decisions.

[0164] Power electronics control: The control device 104 sends a regulation signal to the power electronics control unit 301 to control the working state of components such as IGBT and MOSFET, adjust the inductive reactance value of the reactor or activate the harmonic filter.

[0165] Reactive power compensation and harmonic suppression: The reactive power compensation unit 902 realizes reactive power compensation by dynamically adjusting the working state of the reactor and the capacitor bank. The harmonic suppression device 103 eliminates harmonic interference in the power grid through active and passive filters 1031.

[0166] Feedback and self-learning: The control device 104 performs continuous optimization based on the operation feedback data and adjusts the control parameters through a self-learning algorithm to adapt to the long-term changing load demand and improve the operation efficiency of the power grid.

[0167] Heat dissipation and protection: During the operation of the reactor system, the heat dissipation and protection module monitors the reactor temperature and current in real time to ensure that the system does not fail due to overheating or overload, while providing necessary protection.

[0168] The reactor control system of this embodiment integrates a variety of advanced power electronic technologies and intelligent control algorithms, and successfully solves the problems of slow response, inaccurate adjustment, and serious harmonic interference of traditional reactors. The system has dynamic response capability, harmonic suppression function, and reactive power compensation characteristics, and can effectively realize reactive power compensation and harmonic suppression in a complex and changeable power grid environment, improve the stability and power quality of power grid operation, and has broad application prospects in improving power grid stability and optimizing power quality. Moreover, its modular design enables the system to have flexibility, scalability, and highly automated control capabilities. Each module can be flexibly combined to adapt to power systems and power requirements of different sizes, and support rapid expansion and upgrading, so that the control system is not only suitable for reactive power compensation and harmonic suppression in distribution networks, but also can be used for voltage regulation in the industrial field, power dispatching in power plants, and power optimization in electric vehicle charging stations. It can be adjusted according to actual needs to meet the needs of different power systems.

[0169] Based on the same technical concept, in some embodiments, Fig.10 As shown, the present application provides a reactor control method, which is described by taking the method applied to a control device in a reactor control system as an example, and the method includes:

[0170] S1002, obtaining electrical parameter information during operation of the power grid.

[0171] Specifically, the control device can obtain electrical parameter information of the power grid during operation based on the data acquisition device. The electrical parameters can also include the working parameters of the reactor, such as the current, voltage, temperature, power factor and operating frequency of the reactor.

[0172] S1004: When it is determined according to the electrical parameter information that the power grid satisfies a reactive power compensation condition and a harmonic suppression condition, determine a first operating parameter for reactive power compensation for the power grid based on the electrical parameter information.

[0173] Specifically, the control device may determine the first operating parameter for reactive power compensation for the power grid based on the electrical parameter information when it is determined that the power grid meets the reactive power compensation condition and the harmonic suppression condition according to the electrical parameter information.

[0174] In some embodiments, the control device can determine whether the grid has a reactive power shortage or surplus according to the electrical parameter information, and if so, determine that the grid meets the reactive power compensation condition. If not, determine that the grid does not meet the reactive power compensation condition.

[0175] In some embodiments, the control device can determine whether the harmonic content of the power grid is greater than a preset content value based on the electrical parameter information, and if so, determine that the power grid meets the harmonic suppression condition. If less than or equal to, determine that the power grid does not meet the harmonic suppression condition.

[0176] S1006: Determine a second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter.

[0177] The first operating parameter is used to control the operation of the reactor adjustment device to adjust the operating state of the reactor and realize the operating parameter of reactive power regulation. For example, the first operating parameter may be the operating inductive reactance value of the reactor.

[0178] The second operating parameter is an operating parameter used to control the operation of the harmonic suppression device to filter specific harmonics in the power grid. For example, the second operating parameter may be an operating parameter of the harmonic suppression device, such as an operating current and frequency.

[0179] Specifically, the control device may determine the second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter.

[0180] In some of the embodiments, the control device can determine the initial wave suppression operation parameters of the power grid at the current moment based on the electrical parameter information, and then determine the newly added harmonic information of the newly added harmonics that may be generated by the power grid when the power grid is subjected to reactive power compensation according to the first operating parameters based on the first operating parameters, determine the parameter adjustment value for adjusting the initial wave suppression operation parameters based on the newly added harmonic information, and adjust the initial wave suppression operation parameters based on the parameter adjustment value to obtain the second operating parameters. When filtering the power grid according to the second operating parameters, not only the power grid harmonics at the current moment can be filtered out, but also the harmonics that may be caused during reactive power compensation can be filtered out, and the filtering accuracy and filtering efficiency can be improved by predictive filtering.

[0181] S1008, controlling the operation of the reactor adjustment device according to the first operation parameter, the reactor adjustment device being used to adjust the operation state of the reactor to perform reactive power compensation on the power grid.

[0182] Specifically, the control device may control the operation of the reactor adjustment device according to the first operating parameter, and the reactor adjustment device is used to adjust the operating state of the reactor to perform reactive power compensation on the power grid.

[0183] S1010: Controlling the operation of a harmonic suppression device according to a second operation parameter, where the harmonic suppression device is used to filter harmonics in a power grid.

[0184] Specifically, the control device may control the operation of the harmonic suppression device according to the second operation parameter, and the harmonic suppression device is used to filter the harmonics in the power grid.

[0185] In some of the embodiments, when the control device determines that the power grid only meets the reactive power compensation condition based on the electrical parameter information, the control device determines the first operating parameter for reactive power compensation for the power grid based on the electrical parameter information, and performs reactive power compensation on the power grid according to the first operating parameter.

[0186] In some of the embodiments, when the control device determines that the power grid only meets the harmonic suppression conditions based on the electrical parameter information, it determines the harmonic suppression operating parameters for harmonic suppression of the power grid based on the electrical parameter information, and filters the power grid according to the harmonic suppression operating parameters.

[0187] In some of the embodiments, when the control device determines, based on the electrical parameter information, that the power grid does not satisfy both the reactive power compensation condition and the harmonic suppression condition, the control device returns to the step of obtaining the electrical parameter information during the operation of the power grid.

[0188] In the above embodiment, the control device can obtain the electrical parameter information of the power grid in real time through the data acquisition device, and determine whether the power grid meets the reactive compensation condition and the harmonic suppression condition according to the electrical parameter information. When it is determined that the power grid meets the reactive compensation condition and the harmonic suppression condition, the control device can first determine the first operating parameter for reactive compensation for the power grid based on the electrical parameter information, and then determine the second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter, and control the operation of the electric controller adjustment device according to the first operating parameter to adjust the operating state of the reactor, and control the operation of the harmonic suppression device according to the second operating parameter to filter the harmonics in the power grid. When determining the second operating parameter, by considering the impact of the first operating parameter used in reactive compensation on the power grid harmonics, the matching of the second operating parameter with the actual operation scenario of the power grid can be effectively improved. No matter what changes occur in the load of the power grid, the control device can accurately perform reactive compensation on the power grid through the first operating parameter, and filter the harmonics of the power grid through the second operating parameter, which effectively improves the operation flexibility of the reactor control system and further improves the operation performance of the power grid.

[0189] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0190] Based on the same inventive concept, the embodiment of the present application also provides a reactor control device for implementing the reactor control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more reactor control device embodiments provided below can refer to the limitations of the reactor control method above, and will not be repeated here.

[0191] In some embodiments, Fig.11 As shown, a reactor control device 1100 is provided, comprising: an information acquisition module 1101, a first operating parameter determination module 1102, a second operating parameter determination module 1103, a reactive power compensation module 1104 and a filtering module 1105, wherein:

[0192] The information acquisition module 1101 is used to acquire electrical parameter information when the power grid is running.

[0193] The first operating parameter determination module 1102 is used to determine the first operating parameter for reactive power compensation for the power grid based on the electrical parameter information when it is determined that the power grid meets the reactive power compensation condition and the harmonic suppression condition according to the electrical parameter information.

[0194] The second operating parameter determination module 1103 is used to determine the second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter.

[0195] The reactive power compensation module 1104 is used to control the operation of the reactor adjustment device according to the first operation parameter, and the reactor adjustment device is used to adjust the operation state of the reactor to perform reactive power compensation on the power grid.

[0196] The filtering module 1105 is used to control the operation of the harmonic suppression device according to the second operation parameter, and the harmonic suppression device is used to filter the harmonics in the power grid.

[0197] Each module in the above reactor control device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0198] In some embodiments, a computer device is provided, which may be a control device, and its internal structure diagram may be as follows: Fig.12 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as electrical parameter information, reactive power compensation conditions, harmonic suppression conditions, first operating parameters, and second operating parameters. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a reactor control method is implemented.

[0199] In some embodiments, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the specific steps of the above-mentioned reactor control method embodiment when executing the computer program.

[0200] In some embodiments, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the specific steps of the above-mentioned reactor control method embodiment are implemented.

[0201] In some embodiments, a computer program product is provided, including a computer program, which implements the specific steps of the above-mentioned reactor control method embodiment when executed by a processor.

[0202] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. In addition, the acquisition, storage, processing, and transmission of data are in compliance with relevant laws and regulations.

[0203] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0204] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0205] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A reactor control system, characterized in that: The reactor control system includes a data acquisition device, a reactor adjustment device, a harmonic suppression device, and a control device that is respectively connected to the data acquisition device, the reactor adjustment device, and the harmonic suppression device in communication; Data acquisition equipment, used to collect electrical parameter information during grid operation; Reactor adjustment equipment, used to adjust the operating state of the reactor to perform reactive power compensation on the power grid; Harmonic suppression equipment, used to filter harmonics in the power grid; A control device is used to obtain the electrical parameter information, and when it is determined according to the electrical parameter information that the power grid meets the reactive power compensation condition and the harmonic suppression condition, determine a first operating parameter for reactive power compensation for the power grid based on the electrical parameter information; determine a second operating parameter for harmonic suppression for the power grid according to the electrical parameter information and the first operating parameter; control the operation of the reactor adjustment device according to the first operating parameter to adjust the operating state of the reactor; and control the operation of the harmonic suppression device according to the second operating parameter to filter the harmonics in the power grid.

2. The reactor control system according to claim 1, characterized in that: The data acquisition device includes a current sensing unit, a voltage sensing unit, a temperature sensing unit and a harmonic analysis sensing unit which are respectively connected to the control device for communication: The current sensing unit is used to monitor and collect current information passing through the reactor; The voltage sensing unit is used to monitor and collect voltage change information of the power grid; The temperature sensing unit is used to monitor and collect temperature information inside the reactor and the reactor adjustment device; The harmonic analysis sensor unit is used to detect and collect harmonic information in the power grid; The control device is used to determine whether the power grid meets reactive power compensation conditions and harmonic suppression conditions according to the current information, voltage change information, temperature information and harmonic information.

3. The reactor control system according to claim 1, characterized in that: The reactor adjustment device comprises a power electronic control unit and a power adjustment circuit connected to the power electronic control unit; The control device is in communication connection with the power electronic control unit, and is used for controlling the power electronic control unit to adjust the output parameters of the reactor based on the power regulation circuit through a pulse width modulation or frequency modulation control signal.

4. The reactor control system according to claim 1, characterized in that: The harmonic suppression device comprises a passive filtering unit and an active filtering unit respectively connected to the control device for communication; The passive filtering unit is used to filter low-frequency harmonics in the power grid whose harmonic frequencies are within a preset low-frequency range; The active filtering unit is used to filter high-frequency harmonics in the power grid whose harmonic frequencies are within a preset high-frequency range; The control device is used to control the operation of the passive filter unit and the active filter unit according to the second operation parameter, and filter the low-frequency harmonics and high-frequency harmonics in the power grid.

5. The reactor control system according to claim 4, characterized in that: The harmonic suppression device also includes an active harmonic filtering unit that is communicatively connected to the data acquisition device, the passive filtering unit, and the active filtering unit, respectively; The active harmonic filtering unit is used to adjust the filtering frequencies of the passive filtering unit and the active filtering unit according to the harmonic information of the power grid collected by the data collection device.

6. The reactor control system according to claim 2, characterized in that: The system also includes a heat dissipation device communicatively connected to the control device; The heat dissipation device is used to perform heat dissipation processing on the reactor; The control device is used to determine a heat dissipation strategy for performing heat dissipation processing based on the temperature information when it is determined that the reactor and / or the reactor adjustment device meets the heat dissipation condition according to the temperature information; The heat dissipation device is controlled according to the heat dissipation strategy to perform heat dissipation processing on the reactor and / or the reactor adjustment device.

7. The reactor control system according to claim 2, characterized in that: The control device includes a protection unit; The protection unit is used to determine a protection strategy for the operation protection mechanism of the reactor based on the current information, the voltage change information and / or the temperature information when it is determined that the reactor meets the protection condition according to the current information, the voltage change information and / or the temperature information; The operation of the reactor regulating device is controlled according to the protection strategy.

8. The reactor control system according to claim 1, characterized in that: The control device comprises a communication unit; The communication unit is configured with multiple types of communication protocols, which are used to establish a communication connection with a remote terminal based on each of the communication protocols, and to generate a monitoring interface of the reactor at the remote terminal according to the operating status of the reactor, wherein the monitoring interface is used to display the operating status of the reactor and various key parameter information.

9. The reactor control system according to claim 8, characterized in that: The control device also includes an alarm unit; The alarm unit is connected to the communication unit and is used to perform fault detection on the reactor according to the electrical parameter information; when it is determined that the reactor has an operating fault, fault alarm information is generated based on the fault condition of the reactor, and the fault alarm information is sent to the communication unit; The communication unit is used to transmit the fault alarm information to the remote terminal, and the remote terminal issues a fault alarm for the reactor.

10. A reactor control method, characterized in that the method include: Obtain electrical parameter information during grid operation; In a case where it is determined according to the electrical parameter information that the power grid satisfies the reactive power compensation condition and the harmonic suppression condition, determining a first operating parameter for reactive power compensation for the power grid based on the electrical parameter information; Determining, according to the electrical parameter information and the first operating parameter, a second operating parameter for harmonic suppression of the power grid; Controlling the operation of the reactor adjustment device according to the first operating parameter, the reactor adjustment device being used to adjust the operating state of the reactor to perform reactive power compensation on the power grid; The harmonic suppression device is controlled to operate according to the second operating parameter, and the harmonic suppression device is used to filter the harmonics in the power grid.

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