Control method, processor, control device and storage medium for power line

Abstract

This invention relates to the field of power line carrier communication technology, specifically to a control method, processor, control device, and storage medium for power lines. The method includes: connecting phases A, B, and C of a power line to the same coupler and setting them to share a common N terminal, forming a three-phase coupling transformer; setting the number of turns of the primary and secondary coils of the three-phase coupling transformer to be equal; and setting the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, and the strong current side phases A, B, and C of the three-phase coupling transformer to be equal. The three parallel communication signals ensure that an interruption in any one channel does not affect the signals of the others, i.e., a phase loss does not cause communication interruption, thus improving the quality of three-phase communication. Phases A, B, and C are synchronized when transmitting and receiving signals, achieving multiple-input multiple-output (MIMO) and enhanced signal strength. The transmit and receive power of the coupler are both increased, improving channel quality and enhancing communication success rate and reliability.

Description

Technical Field

[0001] This invention relates to the field of power line carrier communication technology, and more specifically to a control method, processor, control device, and storage medium for power lines. Background Technology

[0002] Low-voltage broadband power line carrier communication (LDBCC) is a special communication method that uses low-voltage power distribution lines (380 / 220V subscriber lines) as the information transmission medium for voice or data transmission. This technology loads a high-frequency signal carrying information onto an electric current, then transmits it over power lines of various voltage levels. The receiving modem then separates the high-frequency signal from the current and transmits it to the power line broadband user terminal (e.g., computer, television, telephone, smart meter, switch, transformer). This technology enables the transmission of multiple services, including data, voice, and video, on existing power lines without requiring rewiring.

[0003] The biggest advantage of low-voltage power line broadband carrier communication is that it relies on the existing low-voltage power line network for signal transmission, eliminating the need for additional channels and resulting in low cost. However, due to the significant and complex load variations within power lines, harmonic interference is severe, making low-voltage power line broadband carrier communication highly susceptible to interference and noise. In current power line communication, phases A, B, and C are independent lines using a single-phase coupling mode. When any phase is affected by interference, signal transmission failure is easily caused, leading to poor communication reliability. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, embodiments of the present invention provide a control method, processor, control device, and storage medium for power lines.

[0005] To achieve the above objectives, a first aspect of the present invention provides a control method for power lines, comprising:

[0006] Connect phases A, B, and C of the power line to the same coupler and set them to share the N terminal to form a three-phase coupled transformer.

[0007] Set the number of turns of the primary and secondary windings of the three-phase coupled transformer to be equal;

[0008] The coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupled transformer is set to be equal.

[0009] In this embodiment of the invention, the method further includes:

[0010] Increase the transmission power of the three-phase coupling transformer by 5-6 dBm;

[0011] Increase the receiving power of the three-phase coupling transformer by 4-4.7 dBm.

[0012] In this embodiment of the invention, the method further includes:

[0013] Add low-frequency and high-frequency broadcast control bands to the power line communication network;

[0014] If the first data frequency band currently used by the communication network is interfered with, the communication network can switch to the second data frequency band by using the broadcast control frequency band of the low frequency band or the high frequency band.

[0015] In this embodiment of the invention, when the broadcast control frequency band in the low-frequency band or high-frequency band is interfered with, and when the first data frequency band currently used by the communication network is interfered with, switching the frequency band used by the communication network to the second data frequency band using the broadcast control frequency band in the low-frequency band or high-frequency band includes:

[0016] If the first data frequency band currently used by the communication network is interfered with, the communication network can switch to the second data frequency band by utilizing the uninterrupted broadcast control frequency bands in the low-frequency and high-frequency bands.

[0017] In this embodiment of the invention, when the first data frequency band currently used by the communication network is interfered with, switching the frequency band used by the communication network to the second data frequency band using a low-frequency band or a high-frequency band broadcast control frequency band includes:

[0018] When the first data frequency band currently used by the communication network is interfered with, and the first data frequency band includes power-on control frames and / or power-off control frames, the power-on control frames and / or power-off control frames are transmitted using the broadcast control frequency band of the low frequency band or the high frequency band, wherein the power-on control frames and power-off control frames are used to control the power-on and power-off of the electrical equipment corresponding to the power line;

[0019] Switch the frequency band used by the communication network to the second data frequency band.

[0020] In this embodiment of the invention, the method further includes:

[0021] When the first data frequency band currently used in the communication network of the power line includes a power-down control frame, the delay shutdown time of the power-down control frame is determined according to the setting time of the power-down control frame and the network topology level of the power-line corresponding power-consuming equipment.

[0022] Power off electrical equipment is controlled based on the delayed shutdown time.

[0023] In this embodiment of the invention, the method further includes:

[0024] When the first data frequency band currently used in the communication network of the power line includes a power-on control frame, the delayed power-on time of the power-on control frame is determined according to the setting time of the power-on control frame and the network topology level of the power-on equipment corresponding to the power line.

[0025] Powering on electrical equipment is controlled based on the delayed power-on time.

[0026] A second aspect of the present invention provides a processor configured to execute the above-described control method for power lines.

[0027] A third aspect of the present invention provides a control device for a power line, the device comprising:

[0028] The merging module is used to connect phases A, B, and C of a power line to the same coupler and set them to share a common N terminal to form a three-phase coupled transformer.

[0029] The first setting module is used to set the number of turns of the primary and secondary coils of the three-phase coupled transformer to be equal;

[0030] The second setting module is used to set the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupled transformer to be equal.

[0031] A fourth aspect of the present invention provides a machine-readable storage medium storing instructions that cause a machine to perform the above-described control method for power lines.

[0032] In this embodiment of the invention, the control method for power lines includes: connecting phases A, B, and C of the power line to the same coupler and setting them to share a common N terminal to form a three-phase coupling transformer. The three-phase coupling transformer acts as a bridge between the three phases, transmitting information and allowing power line carrier signals on the three lines to be mutually transmitted. This way, the power line carrier signal on any one phase can be transmitted to the other two phases, thus covering the entire power grid. In other words, there are three parallel communication signals on the transmission line; an interruption in any one signal does not affect the signals on the other phases, meaning a phase loss will not cause communication interruption, improving the quality of three-phase communication. Since phases A, B, and C transmit and receive signals synchronously, multiple pieces of information can be transmitted / received simultaneously. When signals are received on all three phases (A, B, and C), signal strength can be enhanced. Because phases A, B, and C are connected to the same coupler, when transmitting signals, phases A, B, and C transmit simultaneously, and when receiving signals, phases A, B, and C receive simultaneously, achieving multiple inputs and multiple outputs. Interference on one phase does not affect the signal transmission of other phases, improving communication reliability.

[0033] Furthermore, the number of turns in the primary and secondary windings of the three-phase coupling transformer is set to be equal; the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, and the strong current side phases A, B, and C is also set to be equal. In this way, compared to the previous single-phase coupling mode, using the above structure and settings increases both the transmit and receive power of the coupler, thereby improving channel quality, increasing communication success rate, and ensuring communication reliability and real-time performance. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 A flowchart illustrating a control method for power lines according to an embodiment of the present invention is shown schematically.

[0036] Figure 2 A schematic diagram of a three-phase coupled transformer according to an embodiment of the present invention is shown.

[0037] Explanation of reference numerals in the attached figures

[0038] 10 - Wire-wound coil; 11 - Ferrite coil. Detailed Implementation

[0039] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] Figure 1 A flowchart illustrating a control method for power lines according to an embodiment of the present invention is shown schematically. Figure 1 As shown, in one embodiment of the present invention, a control method for power lines is provided, comprising the following steps:

[0043] Step 101: Connect phases A, B, and C of the power line to the same coupler and set them to share a common N terminal to form a three-phase coupled transformer;

[0044] Step 102: Set the number of turns of the primary and secondary windings of the three-phase coupled transformer to be equal;

[0045] Step 103: Set the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupling transformer to be equal.

[0046] Based on the existing single-phase coupling, the three-phase separate couplers are combined, and the A, B and C phases of the power line are connected to the same coupler to form a three-phase coupled transformer. Figure 2 A schematic diagram of a three-phase coupled transformer according to an embodiment of the present invention is shown, see below. Figure 2 In a three-phase coupled transformer, the transmission and reception on the weak current side can be performed differentially, with transmission and reception separated. The weak current side of the three-phase coupled transformer can be connected to relevant chips. The strong current side of the three-phase coupled transformer shares the N terminal. Figure 2 In this context, ADC+ and ADC- are understood as analog-to-digital converters, while DAC+ and DAC- are understood as digital-to-analog converters. In electrical equipment connected to power lines, some devices have only two wires and can use only one set, i.e., only phase A and the neutral (N) terminal, or only phase B and the N terminal, or only phase C and the N terminal. Some devices can connect 2-3 sets; when 3 sets are connected, the device is connected to four wires (phase A, phase B, phase C, and the N terminal).

[0047] In a three-phase coupled transformer, transmitting a signal once on one path will result in the same signal being transmitted on paths A, B, and C, and all three signals are useful signals; it is not necessary to transmit one path at a time (unlike unidirectional coupling mode). In this embodiment, paths A, B, and C are used simultaneously, transmitting and receiving the same signal. When the same signals on paths A, B, and C all contain valid signals, interference is amplified. Receiving only one signal is also feasible; that is, interruption of any one path does not affect the signals on other paths, phase loss does not cause communication interruption, and receiving a signal on any one phase is acceptable, without distinguishing which specific phase received the signal. This improves the quality of three-phase communication. Connecting phases A, B, and C of the power line to the same coupler avoids the previous problem of not being able to transmit and receive signals simultaneously (existing unidirectional coupling mode uses time-division multiplexing). Devices connected to the three-phase circuit can simultaneously receive control frames, and devices connected to the low-voltage three-phase line can simultaneously receive carrier signals without causing time delay errors.

[0048] In this embodiment of the invention, the three-phase time slot allocation mechanism of A, B, and C is eliminated (the existing unidirectional coupling mode transmits signals in a time-division manner), and replaced with a common three-phase time slot of A, B, and C (in this embodiment, the three-phase coupling transformer transmits and receives three signals simultaneously). Through the power divider mode, MIMO (Multiple Input Multiple Output) mode is supported with minimal cost without increasing the hardware resources for multi-channel transmission and reception. Specifically, the three time slots in the beacon time slot and TDMA time slot, which are distinguished by the physical lines of the three-phase A, B, and C of the low-voltage line, are merged into one, and the distinction between the three phases A, B, and C is no longer made.

[0049] The three-phase coupling transformer acts as a bridge between the three phases, transmitting information and allowing power line carrier signals on the three lines to be relayed to each other. This means that the power line carrier signal on any one phase can be transmitted to the other two phases, thus covering the entire power grid. In other words, there are three parallel communication signals on the transmission line; an interruption in any one signal does not affect the signals on the others, meaning a phase loss will not cause communication interruption, improving the quality of three-phase communication. Since phases A, B, and C transmit and receive signals synchronously, multiple pieces of information can be received / sent simultaneously (compared to only one piece of information in existing technologies). When signals are received on all three phases, signal strength is also enhanced. Because phases A, B, and C are connected to the same coupler, all three phases transmit and receive signals simultaneously, achieving multiple-input multiple-output (MIMO). Interference on one phase does not affect the signal transmission of other phases, improving communication reliability.

[0050] The number of turns in the primary and secondary windings of the three-phase coupled transformer is set to be equal; the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, and the strong current side phases A, B, and C is set to be equal. This can be equivalently understood as the turns ratio of the primary and secondary windings being 1:1. Figure 2 The power distribution of the coupling inductors in each group (i.e., the weak current side analog-to-digital converter, the weak current side digital-to-analog converter, and the strong current side phase A, phase B, and phase C) is 1:1:1:1:1, with equal power distribution and no distinction between forward and reverse directions. This ensures that the energy is evenly distributed between the strong and weak current sides. Compared to the previous single-phase coupling mode, using the above structure and settings increases both the transmit and receive power of the coupler, thereby improving channel quality, increasing communication success rate, and ensuring communication reliability and real-time performance.

[0051] In one embodiment, the method further includes: increasing the transmit power of the three-phase coupling transformer by 5-6 dBm; and increasing the receive power of the three-phase coupling transformer by 4-4.7 dBm. For signal transmission and reception, there are limits to both transmit and receive power. When the transmit power of the three-phase coupling transformer is increased by 5-6 dBm and the receive power by 4-4.7 dBm, the requirement for space radiation to comply with current standard limits (without exceeding limits) can be met, while simultaneously increasing transmit and receive power and improving channel quality. Preferably, using the above-described structure and configuration of the three-phase coupling transformer (equal power distribution) can increase the transmit power by 6 dBm and the receive power by 4.7 dBm, resulting in a longer transmission distance, lower bit error rate, and higher communication success rate.

[0052] In one embodiment, the method further includes: adding low-frequency and high-frequency broadcast control bands to the power line communication network; and switching the communication network's operating frequency band to a second data band using the low-frequency or high-frequency broadcast control bands when the first data band currently used by the communication network is interfered with.

[0053] There are multiple frequency bands used in power line communication networks. In one embodiment, the carrier defined frequency band is 0.7-12MHz. The defined and used frequency bands are as follows:

[0054] Frequency band 0: 1.953~11.96MHz;

[0055] Frequency band 1: 2.441–5.615 MHz;

[0056] Frequency band 2: 0.781–2.930 MHz;

[0057] Frequency band 3: 1.758~2.930MHz.

[0058] Signal transmission and reception can use half-duplex mode with continuous frequency bands. The default factory configuration uses frequency band 2, which can be switched to frequency band 1 if the on-site signal acquisition is insufficient. Frequency band 0 is restricted and is not selected by default.

[0059] In existing technologies, typically only one frequency band (0, 1, 2, or 3) is selected for signal transmission. When a specific frequency band is used for signal transmission, if that band is interfered with, the signal transmission on that band may fail, resulting in information loss. However, in this embodiment of the invention, two additional broadcast control frequency bands are added: one low-frequency band and one high-frequency band. If the currently used data frequency band is interfered with, the broadcast control frequency of either the low-frequency or high-frequency band can be used to switch the used frequency band to another data frequency band. In this way, the broadcast control frequency band can be used to cope with noise interference, thereby improving communication quality and ensuring communication reliability.

[0060] In one embodiment, adding broadcast control bands for both low and high frequencies can be understood as adding 200K of dual-backup broadcast control band resources in the 500-700K (low frequency band) and 5.7-5.9M (high frequency band) ranges. This adds a dual-channel control broadcast control band without altering the existing 24KHz subcarrier, used for real-time broadcast band switching information. Since the probability of simultaneous interference between the low and high frequency broadcast control bands is relatively small, adding two broadcast control bands (one for low frequencies and one for high frequencies) in this embodiment improves communication stability and reliability compared to simply adding one. Power line carrier communication shares communication channels and power lines, and various types of noise from electrical equipment on the lines can interfere with normal carrier communication. By setting backups for both the data band and the broadcast control band, the data band is switched via the broadcast control band when noise interference is detected, ensuring uninterrupted communication. Impulse interference at the carrier frequency point can also be corrected in a timely manner, making it adjustable and controllable in real time, thus guaranteeing stable and reliable communication.

[0061] In one embodiment, when the broadcast control band in the low-frequency band or high-frequency band is interfered with, and when the first data band currently used by the communication network is interfered with, switching the usage band of the communication network to the second data band using the broadcast control band in the low-frequency band or high-frequency band includes: when the first data band currently used by the communication network is interfered with, switching the usage band of the communication network to the second data band using the broadcast control band in the low-frequency band and the high-frequency band that is not interfered with.

[0062] There are two available broadcast control bands: a low-frequency band and a high-frequency band, and either band can be used for transmitting and receiving signals. When the low-frequency broadcast control band is unavailable, the high-frequency band can still be used; conversely, when the high-frequency band is unavailable, the low-frequency band can still be used. The probability of simultaneously interfering with both the low-frequency and high-frequency broadcast control bands is relatively small. In this embodiment of the invention, at least three bands (two different broadcast control bands and one data band) must be interfered with before communication may be interrupted (in the prior art, interference with just one band can lead to communication interruption), thus ensuring stable and reliable communication.

[0063] In one embodiment, when the first data frequency band currently used by the communication network is interfered with, switching the usage frequency band of the communication network to the second data frequency band using a low-frequency or high-frequency broadcast control frequency band includes: when the first data frequency band currently used by the communication network is interfered with, and the first data frequency band includes power-on control frames and / or power-off control frames, transmitting power-on control frames and / or power-off control frames using a low-frequency or high-frequency broadcast control frequency band, wherein the power-on control frames and power-off control frames are used to control the power-on and power-off of electrical equipment corresponding to the power line; and switching the usage frequency band of the communication network to the second data frequency band.

[0064] The broadcast control band includes three control frame formats: channel switching frames (band switching frames), power-on control frames, and power-off control frames. These control frames carry the current network timestamp and the network timestamp for command effectiveness. The broadcast control band transmits power-on and / or power-off control frames in emergencies; that is, the broadcast control band can be used to issue emergency control commands. Normally, power-on and power-off control frames are transmitted via the data band. However, when a data band switch is required, and the data band happens to contain power-on and / or power-off control frames, the broadcast control band can transmit these frames. This ensures that the electrical equipment corresponding to the power line powers on and off as required, preventing the loss of power-on and power-off control frames due to interference or band switching, and guaranteeing the accuracy and stability of control frame transmission.

[0065] In one embodiment, the method further includes: when a power-down control frame is included in the first data frequency band currently used by the communication network of the power line, determining the delayed shutdown time of the power-down control frame based on the setting time of the power-down control frame and the network topology level of the power-down device corresponding to the power line; and controlling the power-down of the power-down device based on the delayed shutdown time.

[0066] Upon receiving a power-down control frame, each network node determines its own delayed shutdown time based on its network topology level and the set time of the power-down control frame. In one implementation, the delayed shutdown time T1 = the set time Ts of the power-down control frame / network topology level n, where n is typically 1-15 to achieve minimum load shutdown and avoid power outages under load. For example, assuming the set time Ts of the power-down control frame is 15s, devices in the first level (i.e., when n is 1) will power down at the 15th second, devices in the third level (i.e., when n is 3) will power down at the 5th second, and devices in the fifth level will power down at the 3rd second. Devices in the same network topology level will operate simultaneously, while devices in different network topology levels will operate at different times. Power-down control frames can be sent to circuit breakers to control the corresponding electrical equipment to shut down. Circuit breakers further down the network topology hierarchy (the larger n is) have smaller loads and will shut down relatively first. Assuming the network topology has four levels, this can be understood as follows: in the power-down control of the power line network, the micro-switch (at level four) shuts down first, then the small switch (at level three), then the medium switch (at level two), and finally the large switch or main switch (at level one). For a simpler understanding: shut down smaller power supplies first, then larger power supplies; shut down branch power supplies first, then the main power supply. This achieves minimum load shutdown, avoiding power outages under load and preventing damage to equipment in the power line network.

[0067] Upon receiving a broadcast control frame, each network node forwards it level by level (i.e., forwarding it layer by layer in the tree topology), incrementing the network topology level n by 1 after each forward. The value of n is generally between 1 and 15, and should not be too large. In other words, forwarding stops once the network topology level n reaches 15 to avoid broadcast storms.

[0068] In one embodiment, the method further includes: when a power-on control frame is included in the first data frequency band currently used by the communication network of the power line, determining the delayed power-on time of the power-on control frame based on the setting time of the power-on control frame and the network topology level of the power-on device corresponding to the power line; and controlling the power-on of the power-on device based on the delayed power-on time.

[0069] After receiving the power-on control frame, each network node determines its own delayed power-on time based on its network topology level and the set time of the power-on control frame. In one embodiment, the delayed power-on time T2 = the set time of the power-on control frame Tk / network topology level n, where n is generally 1-15. For example, assuming the set time of the power-on control frame Ts = 1.5s, then the devices in the first level (i.e., when n is 1) will power on at 1.5 seconds, the devices in the third level (i.e., when n is 3) will power on at 4.5 seconds, and the devices in the fourth level will power on at 6 seconds. As a simplified explanation: larger power supplies (smaller network topology level n) power on first, followed by smaller power supplies (larger network topology level n); the main power supply (smaller network topology level n) powers on first, followed by the sub-power supplies (larger network topology level n). It enables step-by-step power-on and separate load loading, avoiding load surges that could affect power quality or interfere with other electrical equipment.

[0070] In this embodiment of the invention, the control method for power lines includes: connecting phases A, B, and C of the power line to the same coupler and setting them to share a common N terminal to form a three-phase coupling transformer. The three-phase coupling transformer acts as a bridge between the three phases, transmitting information and allowing power line carrier signals on the three lines to be mutually transmitted. This allows the power line carrier signal on any one phase to be transmitted to the other two phases, thus covering the entire power grid. In other words, there are three parallel communication signals on the transmission line; an interruption in any one signal does not affect the signals on the other phases, meaning a phase loss will not cause communication interruption, improving the quality of three-phase communication. Since phases A, B, and C transmit and receive signals synchronously, multiple pieces of information can be transmitted / received simultaneously. When signals are received on all three phases (A, B, and C), signal strength can be enhanced. Because phases A, B, and C are connected to the same coupler, when transmitting signals, phases A, B, and C transmit simultaneously, and when receiving signals, phases A, B, and C receive simultaneously, achieving multiple inputs and multiple outputs. Interference on one phase does not affect the signal transmission of other phases, improving communication reliability.

[0071] Furthermore, the number of turns in the primary and secondary windings of the three-phase coupling transformer is set to be equal; the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, and the strong current side phases A, B, and C is also set to be equal. In this way, compared to the previous single-phase coupling mode, using the above structure and settings increases both the transmit and receive power of the coupler, thereby improving channel quality, increasing communication success rate, and ensuring communication reliability and real-time performance.

[0072] This invention provides a processor configured to execute any of the above-described control methods for power lines.

[0073] Specifically, the processor can be configured as follows:

[0074] Connect phases A, B, and C of the power line to the same coupler and set them to share the N terminal to form a three-phase coupled transformer.

[0075] Set the number of turns of the primary and secondary windings of the three-phase coupled transformer to be equal;

[0076] The coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupled transformer is set to be equal.

[0077] In this embodiment of the invention, the processor is further configured to:

[0078] Increase the transmission power of the three-phase coupling transformer by 5-6 dBm;

[0079] Increase the receiving power of the three-phase coupling transformer by 4-4.7 dBm.

[0080] In this embodiment of the invention, the processor is further configured to:

[0081] Add low-frequency and high-frequency broadcast control bands to the power line communication network;

[0082] If the first data frequency band currently used by the communication network is interfered with, the communication network can switch to the second data frequency band by using the broadcast control frequency band of the low frequency band or the high frequency band.

[0083] In this embodiment of the invention, when the broadcast control frequency band in the low-frequency band or the high-frequency band is interfered with, and when the first data frequency band currently used by the communication network is interfered with, the processor is further configured to:

[0084] Switching the operating frequency band of a communication network to a second data frequency band using low-frequency or high-frequency broadcast control bands includes:

[0085] If the first data frequency band currently used by the communication network is interfered with, the communication network can switch to the second data frequency band by utilizing the uninterrupted broadcast control frequency bands in the low-frequency and high-frequency bands.

[0086] In this embodiment of the invention, when the first data frequency band currently used by the communication network is interfered with, the processor is further configured to:

[0087] Switching the operating frequency band of a communication network to a second data frequency band using low-frequency or high-frequency broadcast control bands includes:

[0088] When the first data frequency band currently used by the communication network is interfered with, and the first data frequency band includes power-on control frames and / or power-off control frames, the power-on control frames and / or power-off control frames are transmitted using the broadcast control frequency band of the low frequency band or the high frequency band, wherein the power-on control frames and power-off control frames are used to control the power-on and power-off of the electrical equipment corresponding to the power line;

[0089] Switch the frequency band used by the communication network to the second data frequency band.

[0090] In this embodiment of the invention, the processor is further configured to:

[0091] When the first data frequency band currently used in the communication network of the power line includes a power-down control frame, the delay shutdown time of the power-down control frame is determined according to the setting time of the power-down control frame and the network topology level of the power-line corresponding power-consuming equipment.

[0092] Power off electrical equipment is controlled based on the delayed shutdown time.

[0093] In this embodiment of the invention, the processor is further configured to:

[0094] When the first data frequency band currently used in the communication network of the power line includes a power-on control frame, the delayed power-on time of the power-on control frame is determined according to the setting time of the power-on control frame and the network topology level of the power-on equipment corresponding to the power line.

[0095] Powering on electrical equipment is controlled based on the delayed power-on time.

[0096] This invention provides a control device for power lines, the device comprising:

[0097] The merging module is used to connect phases A, B, and C of a power line to the same coupler and set them to share a common N terminal to form a three-phase coupled transformer.

[0098] The first setting module is used to set the number of turns of the primary and secondary coils of the three-phase coupled transformer to be equal;

[0099] The second setting module is used to set the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupled transformer to be equal.

[0100] This invention provides a machine-readable storage medium storing instructions that cause a machine to execute any of the above-described control methods for power lines.

[0101] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0102] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0103] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0104] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0105] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0106] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0107] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0108] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0109] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for power lines, characterized in that, include: Connect phases A, B, and C of the power line to the same coupler and set them to share a common N terminal to form a three-phase coupled transformer. Set the number of turns of the primary and secondary coils of the three-phase coupled transformer to be equal; The coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupled transformer is set to be equal. Add low-frequency and high-frequency broadcast control bands to the communication network of the power lines; If the first data frequency band currently used by the communication network is interfered with, the communication network's usage frequency band can be switched to the second data frequency band using the broadcast control frequency band of the low-frequency band or the high-frequency band.

2. The method according to claim 1, characterized in that, The method further includes: Increase the transmission power of the three-phase coupling transformer by 5-6 dBm; Increase the receiving power of the three-phase coupling transformer by 4-4.7 dBm.

3. The method according to claim 1, characterized in that, When the first data frequency band currently used by the communication network is interfered with, switching the frequency band used by the communication network to the second data frequency band using the broadcast control frequency band of the low frequency band or the high frequency band includes: If the first data frequency band currently used by the communication network is interfered with, the communication network's usage frequency band is switched to the second data frequency band using the uninterrupted broadcast control frequency bands in the low-frequency and high-frequency bands.

4. The method according to claim 1, characterized in that, When the first data frequency band currently used by the communication network is interfered with, switching the frequency band used by the communication network to the second data frequency band using the broadcast control frequency band of the low frequency band or the high frequency band includes: When the first data frequency band currently used by the communication network is interfered with, and the first data frequency band includes power-on control frames and / or power-off control frames, the power-on control frames and / or power-off control frames are transmitted using the broadcast control frequency band of the low-frequency band or the high-frequency band, wherein the power-on control frames and the power-off control frames are used to control the power-on and power-off of the electrical equipment corresponding to the power line; Switch the frequency band of the communication network to the second data frequency band.

5. The method according to claim 1, characterized in that, The method further includes: If the first data frequency band currently used by the communication network of the power line includes a power-down control frame, the delayed shutdown time of the power-down control frame is determined according to the setting time of the power-down control frame and the network topology level of the power-connected equipment. The power to the electrical equipment is controlled according to the delay shutdown time.

6. The method according to claim 1, characterized in that, The method further includes: If the first data frequency band currently used by the communication network of the power line includes a power-on control frame, the delayed power-on time of the power-on control frame is determined according to the setting time of the power-on control frame and the network topology level of the power-on device corresponding to the power line. The power-on equipment is powered on according to the power-on delay time.

7. A processor, characterized in that, It is configured to perform the control method for power lines according to any one of claims 1 to 6.

8. A control device for power lines, characterized in that, The device includes: The merging module is used to connect phases A, B, and C of the power line to the same coupler and set them to share a common N terminal to form a three-phase coupled transformer. The first setting module is used to set the number of turns of the primary and secondary coils of the three-phase coupled transformer to be equal; The second setting module is used to set the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, the strong current side phase A, the strong current side phase B, and the strong current side phase C of the three-phase coupling transformer to be equal. Add low-frequency and high-frequency broadcast control bands to the communication network of the power lines; If the first data frequency band currently used by the communication network is interfered with, the communication network's usage frequency band can be switched to the second data frequency band using the broadcast control frequency band of the low-frequency band or the high-frequency band.

9. A machine-readable storage medium storing instructions thereon, characterized in that, This instruction is used to cause the machine to perform the control method for power lines according to any one of claims 1 to 6.

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