A remote power control device and its control method

Abstract

This invention provides a remote power control device and its control method. The control device includes a main control module, a load control module, and a metering module, all of which are connected to the main control module. The control method specifically involves real-time acquisition of power data and functional data stream information of each line node; selection of the line node for remote control; determination of whether the molded case switch (MCS) of the corresponding line node meets the remote control conditions; if the MCS of the corresponding line node meets the remote control conditions, a remote control command is generated and sent to the corresponding load control module; and a trip signal is output according to the remote control command, causing the MCS of the corresponding line node to trip, thus completing the remote load control of the line node. This invention can determine the remote control conditions of the MCS within the line node, thereby determining whether remote control is possible and ensuring timely load control.

Description

Technical Field

[0001] This invention relates to the field of power control technology, and in particular to a remote power control device and its control method. Background Technology

[0002] Industry is a major energy consumer in my country, accounting for approximately 70% of the country's total energy consumption. Industrial enterprises face numerous challenges in energy management. Firstly, the sheer volume and increasing annual energy consumption in the industrial sector make management difficult. Secondly, industrial enterprises are often insensitive to their internal energy usage, resulting in untimely data acquisition, narrow data coverage, and an inability to reflect real-time energy consumption and energy conservation efforts. Electricity load is a primary energy consumer for industrial enterprises, and metering and managing it can achieve energy conservation, consumption reduction, and improved energy efficiency. However, current electricity load metering and management often involves directly issuing control commands without considering the execution conditions of the controlled objects. If the controlled objects do not meet the execution conditions, it can delay electricity load regulation and potentially cause grid malfunctions. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a remote power control device and its control method. By judging the control conditions of the remote control object through the load control module, the corresponding remote control command is formulated only when the control conditions are met. This can avoid the problem of delayed power load control due to the remote control object not having the conditions to execute the control command, so that the power load control can be carried out in a timely manner and the safety of power grid operation can be guaranteed.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A remote power control device includes a main control module, a load control module, and a metering module. The load control module and the metering module are both connected to the main control module. The metering module is used to collect power data of the distribution line. The main control module is used to remotely control the load of the line nodes based on the power data of the distribution line. The load control module is used to remotely determine the control conditions of the molded case switches in the line nodes and execute load control according to the remote control of the main control module.

[0006] Furthermore, the remote power control device also includes a communication module, which is connected to the main control module and also to the load control module. The communication module is used to transmit remote control commands from the main control module to the load control module, and the load control module also uploads load information of the line nodes after load control through the communication module.

[0007] Furthermore, the remote power control device also includes a display module, which is connected to the main control module and is used to display the operating status of the remote power control device and the corresponding power distribution line.

[0008] Furthermore, the load control module includes a local trip control circuit and an access status detection circuit. The local trip control circuit is connected to the molded case switch at the line node and is used to output a trip signal to the molded case switch according to the remote control command of the main control module. The access status detection circuit is connected to both the molded case switch and a relay and is used to detect the wiring status of the molded case switch and the line node relay in real time, and to determine whether the molded case switch meets the remote control conditions based on the wiring status.

[0009] A control method for a remote power control device, applied to the aforementioned remote power control device, includes the following steps:

[0010] Step 1: The metering module collects power data in real time and calculates the power data through the main control module to obtain the functional data flow information of each line node;

[0011] Step two: The main control module selects the line nodes to be remotely controlled based on the functional data stream information of each line node. The main control module sends a remote control request to the load control module. The load control module determines whether the molded case switch of the corresponding line node meets the remote control conditions. If the molded case switch of the corresponding line node meets the remote control conditions, the main control module formulates a remote control command based on the functional data stream information of the selected line node and sends it to the load control module. If the molded case switch of the corresponding line node does not meet the remote control conditions, an alarm is issued to the main control module.

[0012] Step 3: The load control module receives the remote control command and outputs a trip signal according to the remote control command. The molded case switch of the corresponding line node trips, thus completing the remote load control of the line node.

[0013] Furthermore, in step two, when the load control module determines whether the molded case switch of the corresponding line node has the conditions for remote control, it detects the wiring status of the molded case switch and the corresponding relay of the line node. When it detects that the wiring of the molded case switch and the corresponding relay of the line node is completed and the connected voltage is accurate, it determines whether the molded case switch meets the conditions for remote control based on the output signal of the connection status detection circuit.

[0014] Furthermore, the wiring of the molded case switch and the corresponding relay at the line node includes connecting the two output pins of the relay to the L line of the mains circuit and the power supply pin of the excitation coil of the molded case switch, respectively, and connecting the ground pin of the excitation coil of the molded case switch to the N line of the mains circuit.

[0015] Furthermore, when the output signal level of the access status detection circuit is low, the molded case switch meets the remote control conditions; when the output signal level of the access status detection circuit is high, the molded case switch does not meet the remote control conditions.

[0016] Furthermore, in step three, after the load control module receives the remote control command and outputs a trip signal according to the remote control command, the load control module also performs remote signaling detection on the line nodes and determines whether the load control is successful based on the remote signaling detection results. If the load control is successful, the load control module returns a success message to the main control module and uploads the load information corresponding to the line node to the main control module; if the load control fails, the load control module reports an alarm message to the main control module.

[0017] The beneficial effects of this invention are:

[0018] The load control module can determine the remote control conditions of the molded case switches within the line nodes, thereby determining whether remote control can be performed. This ensures that load control can be carried out in a timely manner, preventing delays in power load control due to the inability to execute remote control, and effectively safeguarding the safety of power grid operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a local trip control circuit according to an embodiment of the present invention;

[0021] Figure 3 This is a flowchart of the present invention.

[0022] The module consists of: 1. Main control module, 2. Load control module, 3. Metering module, 4. Communication module, and 5. Display module. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example:

[0025] A remote power control device such as Figure 1 As shown, it includes a main control module 1, a load control module 2, and a metering module 3. The load control module and the metering module are both connected to the main control module. The metering module is used to collect power data of the power distribution line. The main control module is used to remotely regulate the load of the line nodes based on the power data of the power distribution line. The load control module is used to remotely determine the control conditions of the molded case switches in the line nodes and execute load control according to the remote regulation of the main control module.

[0026] The metering module can accurately measure the total active and reactive power, and perform real-time measurement and processing of power parameters such as active and reactive power, voltage, current, power factor, and frequency. It also has storage functions for recording power consumption, load curves, and event data. Furthermore, the metering module interacts with the main control module via an SPI communication interface.

[0027] The remote power control device also includes a communication module 4, which is connected to the main control module and also to the load control module. The communication module is used to transmit remote control commands from the main control module to the load control module, and the load control module also uploads the load information of the line nodes after load control through the communication module.

[0028] The communication module specifically interacts with the main control module via UART, and the communication module can be a Bluetooth, 5G or other communication module.

[0029] The remote power control device also includes a display module 5, which is connected to the main control module and is used to display the operating status of the remote power control device and the corresponding power distribution line.

[0030] The display module interacts with the main control module via an I / O interface. The display module includes a running indicator, a pulse indicator, a communication indicator, and an alarm indicator.

[0031] The operation indicator light uses a high-brightness, long-life green LED to indicate the operating status of the remote power control device and the operating status of the power distribution lines connected to the remote power control device. When the operation indicator light flashes at a frequency of 1Hz, it indicates that the remote power control device and its connected power distribution lines are operating normally. If the operation indicator light flashes once at a frequency of 2.5Hz and then goes out for 2 seconds, it indicates that there is a phase loss problem in phase A. If the operation indicator light flashes twice at a frequency of 2.5Hz and then goes out for 2 seconds, it indicates that the load control module and the metering module are both connected to the main control module, and the metering module has a phase loss problem in phase B. If the operation indicator light flashes three times at a frequency of 2.5Hz and then goes out for 2 seconds, it indicates that there is a phase loss problem in phase C. If the operation indicator light flashes four times at a frequency of 2.5Hz and then goes out for 2 seconds, it indicates that there is a two-phase loss problem or a voltage reverse phase sequence problem.

[0032] The pulse indicator light uses a high-brightness, long-life red LED that is normally off and can flash according to the pulse constant requirement to indicate active electrical energy.

[0033] The communication indicator light uses a high-brightness, long-life blue LED light, which is normally off. When there is uplink or downlink communication, it flashes at a frequency of 5Hz for 3 seconds, and when the communication module has a communication abnormality, it stays on to indicate the abnormality of the communication module.

[0034] The alarm indicator light uses a high-brightness, long-life yellow LED light and is normally off. When the alarm indicator light flashes twice at a frequency of 2.5Hz and then goes out for 2 seconds, it indicates that there is a problem of reverse phase sequence in at least one phase current. When the alarm indicator light flashes three times at a frequency of 2.5Hz and then goes out for 2 seconds, it indicates that there is a problem of reverse power.

[0035] The load control module includes a local trip control circuit and an access status detection circuit. The local trip control circuit is connected to the molded case switch at the line node and is used to output a trip signal to the molded case switch according to the remote control command of the main control module. The access status detection circuit is connected to both the molded case switch and a relay and is used to detect the wiring status of the molded case switch and the line node relay in real time, and to determine whether the molded case switch meets the remote control conditions based on the wiring status.

[0036] The local trip control circuit is as follows: Figure 2 As shown, when the RL_ctrl signal output is high and the RL_EN output is low, the transistor Q2 is turned on, and its collector can output a trip signal, so the relay JK can trip.

[0037] When the trip enable signal RL_EN is high, transistor Q1 is turned on, the collector of transistor Q2 remains low, and transistor Q2 is turned off. Regardless of the level of the RL_ctrl signal output, no trip output will be executed, thus effectively avoiding the occurrence of trip malfunction.

[0038] A control method for a remote power control device, applied to the aforementioned remote power control device, such as... Figure 3 As shown, it includes the following steps:

[0039] Step 1: The metering module collects power data in real time and calculates the power data through the main control module to obtain the functional data flow information of each line node;

[0040] Step two: The main control module selects the line nodes to be remotely controlled based on the functional data stream information of each line node. The main control module sends a remote control request to the load control module. The load control module determines whether the molded case switch of the corresponding line node meets the remote control conditions. If the molded case switch of the corresponding line node meets the remote control conditions, the main control module formulates a remote control command based on the functional data stream information of the selected line node and sends it to the load control module. If the molded case switch of the corresponding line node does not meet the remote control conditions, an alarm is issued to the main control module.

[0041] Step 3: The load control module receives the remote control command and outputs a trip signal according to the remote control command. The molded case switch of the corresponding line node trips, thus completing the remote load control of the line node.

[0042] In step two, when the load control module determines whether the molded case switch of the corresponding line node has the conditions for remote control, it detects the wiring status of the molded case switch and the corresponding relay of the line node. When it detects that the wiring of the molded case switch and the corresponding relay of the line node is completed and the connected voltage is accurate, it determines whether the molded case switch meets the conditions for remote control based on the output signal of the connection status detection circuit.

[0043] The wiring of the molded case switch and the corresponding relay at the line node includes connecting the two output pins of the relay to the L line of the mains circuit and the power supply pin of the excitation coil of the molded case switch, respectively, and connecting the ground pin of the excitation coil of the molded case switch to the N line of the mains circuit.

[0044] When the output signal level of the connected status detection circuit is low, the molded case switch meets the remote control conditions; when the output signal level of the connected status detection circuit is high, the molded case switch does not meet the remote control conditions.

[0045] In step three, after the load control module receives the remote control command and outputs the trip signal according to the remote control command, the load control module also performs remote signal detection on the line nodes and determines whether the load control is successful based on the remote signal detection results. If the load control is successful, the load control module returns a success message to the main control module and uploads the load information corresponding to the line node to the main control module; if the load control fails, the load control module reports an alarm message to the main control module.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A remote power control device, characterized in that, It includes a main control module, a load control module, and a metering module. The load control module and the metering module are both connected to the main control module. The metering module is used to collect power data of the power distribution line. The main control module is used to remotely regulate the load of the line nodes based on the power data of the power distribution line. The load control module is used to remotely determine the control conditions of the molded case switches in the line nodes and execute load control according to the remote regulation of the main control module. The load control module includes a local trip control circuit and an access status detection circuit. The local trip control circuit is connected to the molded case switch at the line node and is used to output a trip signal to the molded case switch according to the remote control command of the main control module. The access status detection circuit is connected to both the molded case switch and a relay and is used to detect the wiring status of the molded case switch and the line node relay in real time, and to determine whether the molded case switch meets the remote control conditions based on the wiring status.

2. The remote power control device according to claim 1, characterized in that, It also includes a communication module, which is connected to the main control module and also to the load control module. The communication module is used to transmit remote control commands from the main control module to the load control module, and the load control module also uploads load information of the line nodes after load control through the communication module.

3. The remote power control device according to claim 1, characterized in that, It also includes a display module, which is connected to the main control module and is used to display the operating status of the power control device and the corresponding power distribution line.

4. A control method for a remote power control device, applied to the remote power control device according to any one of claims 1-3, characterized in that, Includes the following steps: Step 1: The metering module collects power data in real time and calculates the power data through the main control module to obtain the functional data flow information of each line node; Step two: The main control module selects the line nodes to be remotely controlled based on the functional data stream information of each line node. The main control module sends a remote control request to the load control module. The load control module determines whether the molded case switch of the corresponding line node meets the remote control conditions. If the molded case switch of the corresponding line node meets the remote control conditions, the main control module formulates a remote control command based on the functional data stream information of the selected line node and sends it to the load control module. If the molded case switch of the corresponding line node does not meet the remote control conditions, an alarm is issued to the main control module. Step 3: The load control module receives the remote control command and outputs a trip signal according to the remote control command. The molded case switch of the corresponding line node trips, thus completing the remote load control of the line node.

5. The control method of a remote power control device according to claim 4, characterized in that, In step two, when the load control module determines whether the molded case switch of the corresponding line node has the conditions for remote control, it detects the wiring status of the molded case switch and the corresponding relay of the line node. When it detects that the wiring of the molded case switch and the corresponding relay of the line node is completed and the connected voltage is accurate, it determines whether the molded case switch meets the conditions for remote control based on the output signal of the connection status detection circuit.

6. The control method of a remote power control device according to claim 5, characterized in that, The wiring of the molded case switch and the corresponding relay at the line node includes connecting the two output pins of the relay to the L line of the mains circuit and the power supply pin of the excitation coil of the molded case switch, respectively, and connecting the ground pin of the excitation coil of the molded case switch to the N line of the mains circuit.

7. The control method of a remote power control device according to claim 5, characterized in that, When the output signal level of the connected status detection circuit is low, the molded case switch meets the remote control conditions; when the output signal level of the connected status detection circuit is high, the molded case switch does not meet the remote control conditions.

8. The control method of a remote power control device according to claim 4, characterized in that, In step three, after the load control module receives the remote control command and outputs the trip signal according to the remote control command, the load control module also performs remote signal detection on the line nodes and determines whether the load control is successful based on the remote signal detection results. If the load control is successful, the load control module returns a success message to the main control module and uploads the load information corresponding to the line node to the main control module; if the load control fails, the load control module reports an alarm message to the main control module.

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