CN114839913A - Active filter remote protection method based on network - Google Patents

Abstract

The invention relates to the technical field of remote protection, and a network-based remote protection method for an active filter, comprising a data collector, on which an MCU chip of an active filter is arranged, and the active filter has an MCU chip. One side of the MCU chip is installed with an active filter communication RS485 circuit, the active filter communication RS485 circuit is signal-connected with the network module communication RS485 circuit, and one side of the network module communication RS485 circuit is installed with a network module MCU The MCU chip of the network module is connected with the cloud server through network signals, and the cloud server is connected with the client terminal through network signals. The network-based remote protection method for an active filter communicates with a cloud server through a network, processes communication data, and uses the network and big data to remotely determine potential security risks, so as to protect the device in advance.

Description

A network-based active filter remote protection method

technical field

The invention relates to the technical field of remote protection, in particular to a network-based remote protection method for an active filter.

Background technique

Active filter is a new type of power electronic device used to dynamically suppress harmonics and compensate for reactive power. It can compensate for harmonics and reactive power that vary in size and frequency. Active filters are used to control the harm of harmonics. The main equipment is widely used in various power-consuming environments, and has played a great role in protecting the power grid and power-consuming products.

The protection of the existing active filter equipment is through the combination of the protection circuit and the MCU chip, and immediately enters the protection state after the fault is detected, and this method starts to protect the equipment after the fault occurs, although it can also protect the equipment, However, it has certain damage to the active filter, which brings inconvenience to the use. Therefore, a network-based remote protection method for the active filter is proposed.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a network-based active filter remote protection method. The protection of traditional active filter equipment is combined with the MCU chip through a protection circuit. Before starting to protect the equipment, the active filter is a problem of certain damage.

The present invention provides the following technical solutions: a network-based active filter remote protection method, the network-based active filter includes a data collector, the data collector is provided with an MCU chip of the active filter, and One side of the MCU chip of the active filter is installed with an active filter communication RS circuit, the active filter communication RS circuit is signal-connected with the network module communication RS circuit through signals, and one side of the network module communication RS circuit is installed There is an MCU chip of a network module, the MCU chip of the network module is connected with the cloud server through a network signal, and the cloud server is connected with the client terminal through the network signal.

Preferably, the data collector is controlled by the MCU chip of the active filter.

Preferably, the cloud server is connected to the big data through a network.

Preferably, the data collector is further provided with a power field voltage collector, a current collector and a temperature information collector.

Preferably, the client terminal is a mobile phone or a computer.

Preferably, the network-based active filter remote protection method includes the following steps:

S1: First turn on the data collector. After the equipment runs normally, the MCU chip of the active filter will control the data collector, so as to collect basic data on the voltage, current and equipment temperature of the power site;

S2: Secondly, the MCU chip of the active filter processes the data collected on the data collector in the first stage, and then sends the processed data through the active filter communication RS circuit;

S3: Then the network module communication RS circuit will receive the data sent by the active filter communication RS circuit, and pass it to the MCU chip of the network module for processing, and the MCU chip of the network module will simply process the data and send the data to the cloud server;

S4: At this time, the cloud server stores the received data, and compares the data of historical operation with the existing data, and uses the technology of big data to judge whether the current operation state has potential security risks;

S5: When there is a potential safety hazard, the cloud server sends the hidden danger data back to the MCU chip of the network module, which is simply processed by the MCU chip of the network module and then sent out through the communication RS circuit of the network module;

S6: Then the active filter MCU chip will receive the data of potential safety hazards; then the active filter MCU chip will judge according to the current data;

S7: if there is a higher safety hazard, enter the protection state immediately; if the safety hazard level is low, repeat the S-S steps, and enter the protection state after the judgment is made and the safety hazard has not been eliminated;

S8: Finally, once the protection state is entered, the cloud server pushes the protection information to the client's terminal.

beneficial effect

Compared with the prior art, the present invention has the following beneficial effects: the network-based active filter remote protection method, by adopting a large amount of historical data to determine whether the equipment is in normal operation, in the original protection mode, the safety guarantee of the equipment is improved. With the improvement, under normal circumstances, the protection will be triggered when the equipment has failed, but this method uses the cloud to use the big data on the network and the cloud server to remotely judge the security risks, and provides the security risks through the big data technology, so as to achieve The role of protecting equipment in advance.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

In the figure: 1. Data collector; 2. MCU chip of active filter; 3. RS485 circuit of active filter communication; 4. RS485 circuit of network module communication; 5. MCU chip of network module; 6. Cloud server; 7. Client terminal.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1, a network-based active filter remote protection method, the network-based active filter includes a data collector 1, the data collector 1 is provided with an MCU chip 2 of an active filter, And an active filter communication RS485 circuit 3 is installed on one side of the MCU chip 2 of the active filter, and the active filter communication RS485 circuit 3 is signal-connected with the network module communication RS485 circuit 4 through signals, and the network module communicates RS485 A MCU chip 5 of a network module is installed on one side of the circuit 4 . The MCU chip 5 of the network module is connected to the cloud server 6 through network signals, and the cloud server 6 is connected to the client terminal 7 through network signals.

The data collector 1 is controlled by the MCU chip 2 of the active filter; the cloud server 6 is connected with the big data through the network; the data collector 1 is also provided with a power field voltage collector, a current collector and a temperature information collector; The client terminal 7 is a mobile phone or a computer.

It should be noted that the data collector 1 is responsible for collecting the voltage, current and temperature information of the power field; the MCU chip 2 of the active filter is responsible for processing the collected data and controlling the transmission of the data in the protection scene; the active filter The controller communication circuit RS4853 is responsible for data communication with the network module; the network module communication circuit RS4854 is responsible for data communication with the active filter; the MCU chip 5 of the network module communicates with the cloud server through the network and processes the communication data; the cloud server 6 is to receive and save data, and analyze the data through big data to determine whether there is a potential safety hazard; the client terminal 7 can be a computer or a mobile phone, etc.;

When the device is running:

S1: First turn on the data collector 1. After the equipment runs normally, the MCU chip 2 of the active filter will control the data collector 1, so as to collect basic data on the voltage, current and equipment temperature of the power site;

S2: Secondly, the MCU chip 2 of the active filter processes the data collected on the data collector 1 in the first stage, and then sends the processed data through the RS485 circuit 3 of the active filter communication;

S3: Then the network module communication RS485 circuit 4 will receive the data sent by the active filter communication RS485 circuit 3, and transmit it to the MCU chip 5 of the network module for processing, and the MCU chip 5 of the network module will simply process and send the data to on cloud server 6;

S4: At this time, the cloud server 6 stores the received data, and compares the data of historical operation with the existing data, and uses the technology of big data to judge whether there is a potential safety hazard in the current operation state;

S5: when there is a potential safety hazard, the cloud server 6 sends the hidden danger data back to the MCU chip 5 of the network module, which is simply processed by the MCU chip 5 of the network module and then sent through the RS485 circuit 4 of the network module communication;

S6: then the active filter MCU chip 2 will receive the hidden safety hazard data; then the active filter MCU chip 2 will judge according to the current data;

S7: if there is a higher safety hazard, immediately enter the protection state; if the safety hazard level is low, repeat the steps S1-S6, and enter the protection state after judging 5 times and the safety hazard has not been eliminated;

S8: Finally, once the protection state is entered, the cloud server 6 pushes the protection information to the client's terminal 7.

Wherein steps S4-S7 are the core part of the method, and step S4 is to fit the received historical data, so as to obtain the data fitting function of the equipment during normal operation, and to judge whether the equipment is operating abnormally according to the fitting function; step S7 It is to deal with the hidden dangers according to the level. The hidden dangers are the possible failures. For the hidden dangers of lower level, it is necessary to make multiple judgments from multiple angles, so as to prevent the misjudgment in step S4 and ensure the continuous operation of the equipment.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A remote protection method for an active filter based on a network comprises a data collector (1), and is characterized in that: the data acquisition unit is characterized in that an MCU chip (2) of an active filter is arranged on the data acquisition unit (1), an active filter communication RS485 circuit (3) is installed on one side of the MCU chip (2) of the active filter, the active filter communication RS485 circuit (3) is in signal connection with a network module communication RS485 circuit (4), an MCU chip (5) of a network module is installed on one side of the network module communication RS485 circuit (4), the MCU chip (5) of the network module is connected with a cloud server (6) through a network signal, and the cloud server (6) is connected with a client terminal (7) through the network signal.

2. A network-based active filter according to claim 1, wherein: the data acquisition unit (1) is controlled by an MCU chip (2) of the active filter.

3. A network-based active filter according to claim 1, wherein: the cloud server (6) is connected with the big data through a network.

4. A network-based active filter according to claim 1, wherein: and the data collector (1) is also provided with a power field voltage collector, a current collector and a temperature information collector.

5. A network-based active filter according to claim 1, wherein: the client terminal (7) is a mobile phone or a computer.

6. A network-based active filter according to claim 1, wherein: the active filter remote protection method based on the network comprises the following steps:

s1, firstly, opening the data collector (1), and after the equipment normally runs, the MCU chip (2) of the active filter controls the data collector (1) so as to collect basic data of voltage, current and equipment temperature of the power field;

s2: secondly, the MCU chip (2) of the active filter carries out first-stage processing on the data acquired by the data acquisition unit (1), and then the processed data is sent out through the active filter communication RS485 circuit (3);

s3, the rear network module communication RS485 circuit (4) receives the data sent by the active filter communication RS485 circuit (3) and transmits the data to the MCU chip (5) of the network module for processing, and the MCU chip (5) of the network module sends the data to the cloud server (6) after simple processing;

s4, storing the received data by the cloud server (6), comparing the historical operating data with the existing data, and judging whether the existing operating state has potential safety hazards by using a big data technology;

s5, when potential safety hazards exist, the cloud server (6) sends the potential safety hazard data back to the MCU chip (5) of the network module, and the potential safety hazard data are sent out through the network module communication RS485 circuit (4) after being simply processed by the MCU chip (5) of the network module;

s6, receiving the potential safety hazard data by the active filter MCU chip (2); then the active filter MCU chip (2) judges according to the present data;

s7, if there is higher hidden danger, entering into protection state immediately; if the potential safety hazard level is low, repeating the steps S1-S6, and entering a protection state if the potential safety hazard is not eliminated after 5 times of judgment;

and S8, finally, once the protection state is entered, the cloud server (6) pushes the protection information to the terminal (7) of the client.

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