CN113552449A - Four-level protection safety power utilization monitoring system and monitoring method - Google Patents
Four-level protection safety power utilization monitoring system and monitoring method Download PDFInfo
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Abstract
The invention provides a four-level protection safety electricity monitoring system, which comprises a safety electricity monitoring terminal and an edge computing gateway, wherein the safety electricity monitoring terminal is connected with the edge computing gateway; the safety power utilization monitoring terminal comprises a first communication module, and the edge computing gateway comprises an equipment side communication module and a platform side communication module; the signal input and output end of the first communication module is in butt joint with the signal output and input end of the equipment side communication module, and the signal input end of the equipment side communication module is connected with the signal output end of the platform side communication module. A method for monitoring safety electricity utilization specifically comprises the following steps: 1. issuing a safety electricity utilization monitoring instruction to an edge computing gateway; 2. collecting electrical parameters in real time; 3. starting a fault wave recording module to carry out local wave recording; 4. uploading fault waveform data to an edge computing gateway; 5. and identifying the fault type. The advantages are that: the invention can effectively improve the power utilization safety protection capability of the power distribution side and prevent or reduce the probability of power utilization hidden danger.
Description
Technical Field
The invention relates to a four-level protection safety power utilization monitoring system and a monitoring method, and belongs to the technical field of safety power utilization.
Background
The problem of power distribution and utilization safety protection is always the central importance of the power distribution and utilization link, and the problem of how to ensure the safety, reliability and high efficiency of the power distribution and utilization process gradually becomes the highly important problem for power supply enterprises and power consumers along with the continuous expansion of the power utilization requirement and the power distribution range; the power distribution and utilization link is subjected to safety monitoring, visualization and transparence of network operation data are realized, and a powerful means for solving the problem is provided.
The electricity distribution link mainly comprises the following parts: the power distribution network-branch box-power taking socket has the advantages that the whole link is long in span and wide in range, so that the difficulty of hidden danger troubleshooting and troubleshooting is high, the topological relation from power distribution to power utilization links is not clear and inaccurate due to the fact that circuits of a plurality of old urban carriage districts in cities are complex and the management level is backward, the traditional safety power utilization protection means often cannot have a remarkable effect, and the challenge is brought to the safety protection work of the power distribution and utilization links.
In addition, with the advance of intelligent power distribution and the development of communication technology, new requirements are provided for the acquisition and transmission of power distribution and utilization monitoring data, and the real-time performance and accuracy of power distribution and utilization data monitoring are ensured to gradually become important aspects to be considered for safety power utilization protection.
Disclosure of Invention
The invention provides a four-level protection safety power utilization monitoring system and a monitoring method, and aims to solve the problem that a power distribution and utilization ring section cannot timely troubleshoot hidden trouble.
The technical solution of the invention is as follows: a four-level protection safety electricity monitoring system comprises a safety electricity monitoring terminal and an edge computing gateway; the safety electricity utilization monitoring terminal comprises a first communication module, the edge computing gateway comprises a second communication module, and the second communication module comprises an equipment side communication module and a platform side communication module; the signal input and output end of the first communication module is in butt joint with the signal output and input end of the equipment side communication module, and the signal input end of the equipment side communication module is connected with the signal output end of the platform side communication module.
Furthermore, the four-stage protection safety power consumption monitoring system further comprises a cloud platform, and the signal input and output end of the cloud platform is in butt joint with the signal output and input end of the platform side communication module.
Furthermore, the safety power consumption monitoring terminal further comprises a signal acquisition module, a fault detection module, a fault recording module and a time synchronization module, wherein a signal output end of the signal acquisition module is connected with a signal input end of the fault detection module, a signal output end of the fault detection module is connected with a first signal input end of the fault recording module, a second signal input end of the fault recording module is connected with a signal output end of the time synchronization module, a signal output end of the fault recording module is connected with a signal input end of the first communication module, a first signal output end of the first communication module is connected with a signal input end of the signal acquisition module, and a second signal output end of the first communication module is connected with a signal input end of the time synchronization module.
Furthermore, the edge computing gateway further comprises a storage module, a data processing and correcting module and a fault identification module, wherein the signal output end of the storage module is connected with the signal input end of the data processing and correcting module, the signal output end of the data processing and correcting module is connected with the signal input end of the fault identification module, the signal output end of the fault identification module is connected with the signal input end of the platform side communication module, and the signal output end of the equipment side communication module is connected with the signal input end of the storage module.
Further, safe power consumption monitor terminal is a plurality of, and a plurality of safe power consumption monitor terminal installs respectively at the distribution room, feeder pillar, block terminal, gets the adapted electricity protection side of electric socket, and every safe power consumption monitor terminal carries out real-time network communication through first communication module and edge calculation gateway.
Furthermore, the plurality of safety power utilization monitoring terminals are communicated with each other through respective first communication modules.
A method for monitoring safety electricity utilization by utilizing a four-stage protection safety electricity utilization monitoring system specifically comprises the following steps:
1. the cloud platform starts a four-stage protection safety electricity utilization monitoring system and issues a safety electricity utilization monitoring instruction to the edge computing gateway;
2. the edge computing gateway and the safety electricity utilization monitoring terminals finish communication, and each safety electricity utilization monitoring terminal Mi starts to acquire electrical parameters in real time in a corresponding four-level distribution electricity monitoring interval Lj through a signal acquisition module; i = {1, 2, … …, P }, wherein i is the number of the safety electricity utilization monitoring terminal, and P is the total number of the safety electricity utilization monitoring terminals; j = {1, 2, … …, Q }, wherein j is the number of the four-level power distribution monitoring interval, and Q is the total number of monitoring line sections of the four-level power distribution monitoring interval;
3. the safety electricity utilization monitoring terminal Mi acquires and corrects the electrical parameters of the current sampling time t and a previous sampling time interval (t-1) and a next sampling time interval (t +1) through a fault detection module, and when a valve of | Ui (t +1) -Ui (t) | > Ui or a valve of | Ii (t +1) -Ii (t) | > Ii is identified, the detected fault electrical parameters are judged and a fault wave recording module is started to carry out local wave recording, wherein Ui (t) is the sampling time t, the voltage effective value calculated by the safety electricity utilization monitoring terminal Mi is obtained, and Ii (t) is the current effective value calculated by the safety electricity utilization monitoring terminal Mi when the sampling time t is obtained;
4. uploading corresponding fault waveform data and fault node information obtained through local wave recording to an edge computing gateway;
5. the edge computing gateway receives the fault waveform data and the fault node information, verifies the integrity and the correctness of the fault waveform data through a data processing and checking module in the edge computing gateway, and identifies the fault type through a fault identification module; the fault waveform data includes a fault voltage waveform and a fault current waveform.
Further, the electrical parameter includes a voltage parameter and a current parameter.
Further, the local area recording specifically includes: on the basis of a local area network, the time synchronization module in the safety electricity utilization monitoring terminal guarantees the consistency of time scales, and when the safety electricity utilization monitoring terminal issues a wave recording instruction, the fault wave recording module is started for local wave recording on the safety electricity utilization monitoring terminal which detects fault electrical parameters, and voltage waveforms and current waveforms under the current time scales are recorded.
Further, the method for monitoring the safety power utilization by using the four-stage protection safety power utilization monitoring system specifically comprises the step 6 of uploading a fault type identification result to a cloud platform.
Further, the method for monitoring the safety power utilization by using the four-level protection safety power utilization monitoring system specifically comprises a step 7 of issuing a fault type identification result and fault node position information to an operation and maintenance management system by the cloud platform to guide hidden danger treatment and elimination.
The edge computing gateway receives fault waveform data and fault node information, integrity and correctness of the fault waveform data are verified through a data processing and correcting module in the edge computing gateway, and then fault types are identified through a fault identification module, wherein the identification process specifically comprises the following steps:
5-1), carrying out voltage and current comparison: identifying the fault type as "parallel arc" if Ui (t +1) < Ui (t) and Ui (t) -Ui (t +1) < Ui valves, while Ii (t +1) > Ii (t) and Ii (t +1) -Ii (t) > Ii valves, and performing a voltage comparison if the corresponding conditions are not met;
5-2), performing voltage comparison: if Ui (t +1) < Ui (t) and Ui (t) -Ui (t +1) > Ui valve, identifying the fault type as 'series arc', and if the corresponding condition is not met, carrying out current comparison;
5-3), carrying out current comparison: identifying the fault type as 'line overload' if Ii (t +1) -Ii (t) > Ii valve; if Ii (t +1) < Ii (t) and Ii (t) -Ii (t +1) > Ii valve, identify the fault type as "leakage current"; if the current comparison does not belong to the two conditions, the fault type is identified as unknown fault.
Further, the Ui valve and the Ii valve are respectively a set voltage safety threshold and a set current safety threshold; the threshold Ui and the threshold Ii can be locally modified in an off-line mode or configured on line by a user through a cloud platform.
The invention has the beneficial technical effects that:
the method can automatically position and identify the accurate positions of the series-parallel electric arcs, the leakage currents, the overload and other potential safety hazards, has high fault type identification precision and high fault position positioning precision, can effectively improve the power utilization safety protection capability of the power distribution and utilization side, and plays a role in preventing or reducing the probability of the occurrence of the potential safety hazards.
Drawings
Fig. 1 is an implementation schematic diagram of a four-stage protection safety electricity utilization monitoring system according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a four-stage protection safety electricity monitoring system according to an embodiment of the present invention.
Fig. 3 is a flow chart of an implementation of the four-stage protection safety power consumption monitoring system according to the embodiment of the invention.
Detailed Description
A four-level protection safety electricity monitoring system comprises a safety electricity monitoring terminal and an edge computing gateway; the safety electricity utilization monitoring terminal comprises a first communication module, the edge computing gateway comprises a second communication module, and the second communication module comprises an equipment side communication module and a platform side communication module; the signal input and output end of the first communication module is in butt joint with the signal output and input end of the equipment side communication module, and the signal input end of the equipment side communication module is connected with the signal output end of the platform side communication module.
The four-level protection safety electricity utilization monitoring system further comprises a cloud platform, wherein the signal input and output end of the cloud platform is in butt joint with the signal output and input end of the platform side communication module; and the cloud platform is used for system information interaction management.
The safety electricity utilization monitoring terminal further comprises a signal acquisition module, a fault detection module, a fault recording module and a time synchronization module, wherein the signal output end of the signal acquisition module is connected with the signal input end of the fault detection module, the signal output end of the fault detection module is connected with the first signal input end of the fault recording module, the second signal input end of the fault recording module is connected with the signal output end of the time synchronization module, the signal output end of the fault recording module is connected with the signal input end of the first communication module, the first signal output end of the first communication module is connected with the signal input end of the signal acquisition module, and the second signal output end of the first communication module is connected with the signal input end of the time synchronization module.
The edge computing gateway further comprises a storage module, a data processing and correcting module and a fault identification module, wherein the signal output end of the storage module is connected with the signal input end of the data processing and correcting module, the signal output end of the data processing and correcting module is connected with the signal input end of the fault identification module, the signal output end of the fault identification module is connected with the signal input end of the platform side communication module, and the signal output end of the equipment side communication module is connected with the signal input end of the storage module.
The safety electricity utilization monitoring terminals are respectively arranged on the power distribution and utilization protection sides of the power distribution room, the branch box, the distribution box and the power taking socket; when the safety power utilization monitoring terminal works, each safety power utilization monitoring terminal is in real-time network communication with the equipment side communication module in the edge computing gateway through the first communication module, the edge computing gateway is in real-time network communication with the cloud platform through the platform side communication module, and the real-time network communication can realize a communication function in a wired or wireless communication mode.
The plurality of safety electricity utilization monitoring terminals are communicated in real time through respective first communication modules, network time synchronization is carried out among time synchronization modules in the safety electricity utilization monitoring terminals, and the first communication modules are preferably communicated in real time in a wireless communication mode; the safety electricity utilization monitoring terminals detect fault voltage and current waveforms through the fault detection module, communicate with the adjacent safety electricity utilization monitoring terminals through the corresponding first communication module and the corresponding time synchronization module and form a unified time scale, each safety electricity utilization monitoring terminal sends a wave recording instruction to the corresponding fault wave recording module to start the fault wave recording module to perform local wave recording, and a wave recording result is uploaded to the edge computing gateway; the edge computing gateway carries out computing comparison on the received fault waveform data according to the fault identification module; on the basis of a local area network, the time synchronization module in the safety electricity utilization monitoring terminal guarantees the consistency of time scales, and when the safety electricity utilization monitoring terminal issues a wave recording instruction, the wave recording module is started simultaneously for carrying out local wave recording on the safety electricity utilization monitoring terminal which detects fault electrical parameters, and voltage waveforms and current waveforms under the current time scales are recorded.
The signal acquisition module acquires and processes the voltage and current signals and records the effective value of the voltage and current signals; the fault detection module is used for identifying and detecting fault voltage and current through a detection algorithm; the fault recording module is communicated with a safety electricity utilization monitoring terminal which detects disturbance in a monitoring network in a wireless communication mode after detecting that a fault occurs, unifies time scales through the time synchronization module, and simultaneously starts fault voltage and current waveform recording; the storage module is responsible for receiving fault waveform data uploaded by the safety power utilization monitoring terminal; each data processing and correcting module is used for preprocessing the stored fault waveform data, correcting the time accuracy and the integrity of the recording waveform; and the fault identification module is used for judging the fault type of each fault waveform through a fault identification algorithm and returning a judgment result to the cloud platform through the cloud platform side communication module.
The safety electricity utilization monitoring terminal is configured at an outlet end of the power distribution line; the edge computing gateway and the cloud platform are both configured in an area protection system network, and the cloud platform is used for system information interaction management.
The signal acquisition module in the safety power utilization monitoring terminal preferably adopts an ADC acquisition module; the fault detection module preferably adopts a DSP analysis module; the fault recording module preferably adopts an MCU (microprogrammed control Unit); the first communication module in the safety electricity utilization monitoring terminal and the equipment side communication module in the edge computing gateway preferably adopt RS485 communication protocols; the platform side communication module preferably adopts a 4G communication protocol; the storage module preferably adopts an SD card storage mode; the data processing and correcting module and the fault identification module preferably adopt SOC processing units.
A method for monitoring safety electricity utilization by utilizing a four-stage protection safety electricity utilization monitoring system specifically comprises the following steps:
1. the cloud platform starts a four-stage protection safety electricity utilization monitoring system and issues a safety electricity utilization monitoring instruction to the edge computing gateway;
2. the safety electricity utilization monitoring terminal Mi is communicated with the edge computing gateway, and starts to acquire electrical parameters in real time in a four-level distribution electricity monitoring interval Lj through a signal acquisition module, wherein the electrical parameters comprise voltage parameters and current parameters; i = {1, 2, … …, P } is a number of the safety electricity utilization monitoring terminals, and P is the total number of the safety electricity utilization monitoring terminals; j = {1, 2, … …, Q } is the number of the four-level distribution monitoring interval, Q is the total number of the monitoring line sections of the four-level distribution monitoring interval;
3. the method comprises the steps that the safe electricity utilization monitoring terminal Mi collects and corrects electrical parameters of current sampling time t, a sampling time interval (t-1) before and after the current sampling time t and (t +1) through a fault detection module in a parameter comparison mode, a threshold value comparison mode and the like, when a valve | Ui (t +1) -Ui (t) l > Ui or a valve | Ii (t +1) -Ii (t) l > Ii is identified, the detected fault electrical parameters are judged, and a fault wave recording module is started to carry out local wave recording, wherein Ui (t) is sampling time t, the voltage collected by the safe electricity utilization monitoring terminal Mi has an effective value, and Ii (t) is sampling time t, and the current collected by the safe electricity utilization monitoring terminal Mi has an effective value;
4. the local wave recording function ensures the consistency of time scales on the basis of time synchronization of a local area network, and when a wave recording instruction is issued by the safety electricity utilization monitoring terminal, the safety electricity utilization monitoring terminal which detects a fault electrical parameter simultaneously starts a fault wave recording module to perform local wave recording, records voltage waveforms and current waveforms under the current time scales, and uploads corresponding fault waveform data and fault node information to the edge computing gateway;
5. the edge computing gateway receives the fault waveform data and the fault node information, verifies the integrity and the correctness of the fault waveform data through a data processing and checking module in the edge computing gateway, and identifies the fault type through a fault identification module; the fault waveform data comprises a fault voltage waveform and a fault current waveform;
6. the edge computing gateway counts information of each fault node according to data uploading conditions of each safety power utilization monitoring terminal, summarizes feedback results of the fault identification module, and uploads the summarized information to the cloud platform, wherein the summarized information comprises fault type information.
The edge computing gateway analyzes and processes the received fault voltage and current waveforms, and identifies the type of the series arc fault by comparing the fault voltage with the steady-state voltage; identifying the type of the parallel arc fault through comparison of fault voltage and current with steady-state voltage and current; current collection and comparison are carried out through adjacent safety electricity utilization monitoring terminals, and the type of the leakage current fault is determined; identifying the overload fault type through the current value exceeding the safety threshold; all safety electricity utilization monitoring terminals in the four-level safety monitoring interval are subjected to disturbance sorting, maximum disturbance equipment and sub-maximum disturbance equipment are selected, the position of a fault interval can be determined, and a fault identification result and a fault interval positioning result are uploaded to a cloud platform, wherein the specific process comprises the following steps:
1): identifying the fault type specifically comprises the following steps:
1-1): carrying out voltage and current comparison, if Ui (t +1) < Ui (t) and Ui (t +1) < Ui valve, and Ii (t +1) > Ii (t) and Ii (t +1) -Ii (t) > Ii valve, identifying the fault type as 'parallel arc', entering the step2, and carrying out voltage comparison if corresponding conditions are not met;
1-2): performing voltage comparison, if Ui (t +1) < Ui (t) and Ui (t) -Ui (t +1) > Ui valve, identifying that the fault type is 'series arc', entering step 2), and performing current comparison if corresponding conditions are not met;
1-3): carrying out current comparison, and if the Ii (t +1) -Ii (t) > Ii valve identifies that the fault type is 'line overload', entering a step 2); if the valve Ii (t +1) < Ii (t) and Ii (t) -Ii (t +1) > Ii identifies the fault type as 'leakage current', the method enters the step 2), and otherwise, the method returns 'unknown fault' type information and enters the step 2);
2): according to the data uploading condition of each safety power utilization monitoring terminal, counting each fault node information, summarizing feedback results, and uploading summarized information to the cloud platform, wherein the summarized information comprises fault type information.
The Ui valve and the Ii valve are respectively a voltage safety threshold and a current safety threshold which are set by the safety electricity utilization monitoring terminal Mi; the Ui valve and the Ii valve can be locally modified in an off-line mode, and can also be configured on line through a cloud platform by a user.
And the cloud platform receives the fault identification result and the fault interval identification result, transmits the information to operation and maintenance processing personnel, and carries out timely hidden danger troubleshooting and fault processing.
The further technical scheme is as follows: and each monitoring section of the four-level protection region is provided with a safety electricity monitoring terminal, and the universe safety electricity monitoring terminal is provided with an edge computing gateway.
Each safety electricity monitoring terminal can realize a communication function in a wired or wireless mode, and the edge computing gateway can realize communication in a wireless or wired mode.
The invention relates to a four-stage protection safety power consumption monitoring system, which comprises a safety power consumption monitoring terminal arranged at a power distribution line outlet end, an edge computing gateway arranged in a regional protection system network and a cloud platform for system information interactive management.
Example 1
A four-level protection safety electricity utilization monitoring system is shown in figure 1, a switch is used as a boundary, a distribution network topology structure is divided into four layers according to the level of a control switch, namely a distribution room, a branch box, a distribution box and an electricity taking socket; a plurality of safety electricity monitoring terminals are required to be installed in the four-layer structure; configuring an edge computing gateway in a four-level protection safety electricity monitoring system, and deploying a monitoring cloud platform; and the safety electricity utilization monitoring terminal and the edge computing gateway are both provided with wired and/or wireless communication modules.
The safety power utilization monitoring terminal further comprises a signal acquisition module, a fault detection module, a fault recording module and a time synchronization module, and each edge computing gateway further comprises a signal storage module, a data processing and correcting module and a fault identification module.
The four-stage protection safety power consumption monitoring system disclosed by the embodiment has the following characteristics:
1. under the condition that each part has a communication function, a plurality of safety electricity monitoring terminals are installed in each line section of a four-level protection area; installing an edge computing terminal in a four-level protection area, and deploying a monitoring cloud platform;
2. the signal acquisition module in the safety electricity utilization monitoring terminal adopts an ADC acquisition module; the fault detection module adopts a DSP analysis module; the fault recording module adopts an MCU unit; the communication module adopts an RS485 communication protocol;
3. an RS485 communication protocol is adopted by a device side communication module in the edge computing gateway, and a 4G communication protocol is adopted by a platform side communication module; the storage module adopts the SD card storage mode; the data processing and correcting module and the fault identification module both adopt SOC processing units;
4. each safety electricity utilization monitoring terminal has the functions of parameter acquisition, fault detection, fault recording and the like, and the signal acquisition module is used for processing voltage and current signals and recording the effective values of the voltage and current signals; the fault detection module collects and corrects the current sampling time t and the electric parameters of the previous and next sampling time intervals (t-1) and (t +1), and when a valve | Ui (t +1) -Ui (t) | > Ui and a valve | Ii (t +1) -Ii (t) | > Ii are identified, the fault can be judged to be detected; the fault recording module can record the time and the wave with other safety electricity monitoring terminals in a local communication mode after detecting fault data;
5. the edge computing gateway comprises a storage module, a data processing and correcting module and a fault identification module, can identify the fault type of a received fault waveform, and has the following specific processes:
Step1：
case 1: performing voltage and current comparison, and if Ui (t +1) < Ui (t) and Ui (t +1) < Ui valve, Ii (t +1) > Ii (t) and Ii (t +1) -Ii (t) > Ii valve, identifying the fault type as 'parallel arc', and entering Step 2;
case 2: performing voltage comparison, and if Ui (t +1) < Ui (t) and Ui (t) -Ui (t +1) > Ui valve, identifying that the fault type is 'series arc', and entering Step 2;
case 3: performing current comparison, and if the Ii (t +1) -Ii (t) is larger than an Ii valve, identifying that the fault type is 'line overload', and entering Step 2;
case 4: performing current comparison, if Ii (t +1) < Ii (t) and Ii (t) -Ii (t +1) > Ii valve, identifying that the fault type is leakage current, entering Step2, otherwise, returning unknown fault type information, and entering Step 2;
step 2: according to the data uploading condition of each safety power utilization monitoring terminal, counting each fault node information, summarizing the feedback result of the computing unit, and uploading the summarized information to the cloud platform.
During monitoring, the cloud platform sends a monitoring instruction to a four-stage protection safety electricity utilization monitoring system, and the safety electricity utilization monitoring terminals in all protection sections monitor voltage and current data of the operation sections in real time; after the fault detection module detects that a fault occurs, the fault wave recording module is triggered to start a wave recording function, and fault waveform data are uploaded to the edge computing gateway; a fault identification module of the edge computing gateway calculates and compares the received fault waveform data according to the fault type characteristics, identifies the fault type, and uploads the fault type to a cloud platform in combination with fault node information; and the cloud platform receives the fault node information, determines a fault section through comparison with an actual topological network, collects fault type information, and sends the fault type information to the operation and maintenance system to complete safety power utilization protection.
This embodiment is on the basis that does not change distribution network topological structure, through at distribution room, feeder pillar, block terminal and get electric socket installation safety power consumption monitor terminal, carries out real-time supervision to monitoring interval's voltage, current data to carry out the accuracy through edge computing gateway, cloud platform to trouble district section position, trouble type and distinguish, can promote safety power consumption safety protection, effectively improve the power consumption safety protection ability of power distribution side, play the prevention or reduce the probability that the power consumption hidden danger takes place.
The process of carrying out safe power consumption protection by the four-stage protection safe power consumption monitoring system disclosed by the embodiment comprises the following steps:
the method comprises the following steps that firstly, a cloud platform issues a monitoring instruction to an edge computing gateway, the edge computing gateway is communicated with each safety power utilization monitoring terminal, the safety power utilization monitoring terminals of each power distribution and protection section acquire voltage and current data of an operating line in real time through a signal acquisition module, faults are detected through a fault detection module, and fault waveforms are captured and recorded through a fault recording module; uploading the recorded fault waveform data to an edge computing gateway through a wired or wireless communication module;
the edge computing gateway receives and stores fault waveforms uploaded by each safety power utilization monitoring terminal through a storage module, identifies fault types and fault node information of the fault waveforms through a fault identification module, collects and analyzes identification results of each safety power utilization monitoring terminal, and uploads the identification results to a cloud platform through a wireless transmission module;
and step three, the cloud platform receives the identification result of the fault data set uploaded by the edge computing gateway, determines the distribution power utilization section where the fault is located by combining the topological structure of the four-level protection safety system, and issues the fault type and the fault section information to operation and maintenance personnel through the operation and maintenance system so as to timely eliminate and treat the hidden fault trouble.
The principle of fault monitoring, positioning and identification of the four-stage protection safety electricity utilization monitoring system is illustrated through attached drawings 1-3, a cloud platform sends a monitoring instruction to the four-stage protection safety electricity utilization monitoring system, and safety electricity utilization monitoring terminals in all protection sections monitor voltage and current data of an operation section in real time; when a fault occurs in the section L1, each safety electricity monitoring terminal detects the occurrence of the fault through the fault detection module, communicates with an adjacent safety electricity monitoring terminal through the corresponding communication module and the corresponding time synchronization module, performs time synchronization, starts the function of the wave recording module, and uploads waveform data during the fault period to the edge computing gateway; the edge computing gateway performs computing comparison on the received fault data according to the fault identification module to determine the fault type, and uploads the fault type to the cloud platform in combination with fault node information; the cloud platform receives the fault node information, determines the operation section information of the actual occurrence of the fault through comparison with an actual topological network, summarizes fault type information, and sends the information to the operation and maintenance system to guide operation and maintenance personnel to carry out hidden danger troubleshooting and fault treatment, and completes fault monitoring, positioning and identification of the four-level protection safety power utilization system.
For the power distribution and consumption line topology with the looped network, safety electricity monitoring terminals can be installed at two ends of a line section, the line section can be completely monitored, and the implementation effect of the invention is not influenced.
The foregoing embodiments of the present invention are provided to summarize the implementation principle, technical features and advantages of the present invention, and it should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and the foregoing embodiments and the description are only for explaining the principle of the present invention, and various changes and modifications made to the present invention without departing from the spirit and concept of the present invention are within the scope of the present invention as defined by the appended claims and their equivalents.
Claims (10)
1. A four-level protection safety electricity utilization monitoring system is characterized by comprising a safety electricity utilization monitoring terminal and an edge computing gateway; the safety electricity utilization monitoring terminal comprises a first communication module, the edge computing gateway comprises a second communication module, and the second communication module comprises an equipment side communication module and a platform side communication module; the signal input and output end of the first communication module is in butt joint with the signal output and input end of the equipment side communication module, and the signal input end of the equipment side communication module is connected with the signal output end of the platform side communication module.
2. The four-stage protection safety electricity consumption monitoring system according to claim 1, further comprising a cloud platform, wherein a signal input/output end of the cloud platform is in butt joint with a signal output/input end of the platform side communication module.
3. The four-stage protection safety electricity utilization monitoring system according to claim 1, wherein the safety electricity utilization monitoring terminal further comprises a signal acquisition module, a fault detection module, a fault recording module and a time synchronization module, a signal output end of the signal acquisition module is connected with a signal input end of the fault detection module, a signal output end of the fault detection module is connected with a first signal input end of the fault recording module, a second signal input end of the fault recording module is connected with a signal output end of the time synchronization module, a signal output end of the fault recording module is connected with a signal input end of the first communication module, a first signal output end of the first communication module is connected with a signal input end of the signal acquisition module, and a second signal output end of the first communication module is connected with a signal input end of the time synchronization module.
4. The system according to claim 1, wherein the edge computing gateway further comprises a storage module, a data processing and checking module, and a fault identification module, wherein a signal output terminal of the storage module is connected to a signal input terminal of the data processing and checking module, a signal output terminal of the data processing and checking module is connected to a signal input terminal of the fault identification module, a signal output terminal of the fault identification module is connected to a signal input terminal of the platform-side communication module, and a signal output terminal of the equipment-side communication module is connected to a signal input terminal of the storage module.
5. The four-stage protection safety power consumption monitoring system according to claim 1, wherein the number of the safety power consumption monitoring terminals is multiple, the multiple safety power consumption monitoring terminals are respectively installed on power distribution rooms, branch boxes, distribution boxes and power utilization protection sides of power utilization sockets, each safety power consumption monitoring terminal is in real-time network communication with the edge computing gateway through a first communication module, and the multiple safety power consumption monitoring terminals are in communication through respective first communication modules.
6. Method for safety electricity monitoring by means of a four-stage protection safety electricity monitoring system according to any one of claims 1-5, characterized in that it comprises the following steps:
1. the cloud platform starts a four-stage protection safety electricity utilization monitoring system and issues a safety electricity utilization monitoring instruction to the edge computing gateway;
2. the edge computing gateway and the safety electricity utilization monitoring terminals finish communication, and each safety electricity utilization monitoring terminal Mi starts to acquire electrical parameters in real time in a corresponding four-level distribution electricity monitoring interval Lj through a signal acquisition module; i = {1, 2, … …, P }, wherein i is the number of the safety electricity utilization monitoring terminal, and P is the total number of the safety electricity utilization monitoring terminals; j = {1, 2, … …, Q }, wherein j is the number of the four-level power distribution monitoring interval, and Q is the total number of monitoring line sections of the four-level power distribution monitoring interval;
3. the safety electricity utilization monitoring terminal Mi acquires and corrects the electrical parameters of the current sampling time t and a previous sampling time interval (t-1) and a next sampling time interval (t +1) through a fault detection module, and when a valve of | Ui (t +1) -Ui (t) | > Ui or a valve of | Ii (t +1) -Ii (t) | > Ii is identified, the detected fault electrical parameters are judged and a fault wave recording module is started to carry out local wave recording, wherein Ui (t) is the sampling time t, the voltage effective value calculated by the safety electricity utilization monitoring terminal Mi is obtained, and Ii (t) is the current effective value calculated by the safety electricity utilization monitoring terminal Mi when the sampling time t is obtained;
4. uploading corresponding fault waveform data and fault node information obtained through local wave recording to an edge computing gateway;
5. the edge computing gateway receives the fault waveform data and the fault node information, verifies the integrity and the correctness of the fault waveform data through a data processing and checking module in the edge computing gateway, and identifies the fault type through a fault identification module; the fault waveform data includes a fault voltage waveform and a fault current waveform.
7. The method of electrical safety monitoring as set forth in claim 6, wherein said electrical parameters include voltage parameters, current parameters; the local wave recording specifically comprises the following steps: on the basis of a local area network, the time synchronization module in the safety electricity utilization monitoring terminal is used for ensuring the consistency of time scales, and when the safety electricity utilization monitoring terminal issues a wave recording instruction, the safety electricity utilization monitoring terminal which detects a fault electrical parameter is simultaneously started with the fault wave recording module to carry out local wave recording, and voltage waveforms and current waveforms under the current time scales are recorded; the Ui valve and the Ii valve are respectively a set voltage safety threshold and a set current safety threshold; the threshold Ui and the threshold Ii can be locally modified in an off-line mode or configured on line by a user through a cloud platform.
8. The method for monitoring safety electricity consumption according to claim 6, further comprising step 6 of uploading the fault type identification result to the cloud platform.
9. The method for monitoring the safety electricity consumption according to claim 6, wherein the method further comprises a step 7 of sending the fault type identification result and the fault node position information to an operation and maintenance management system by the cloud platform to guide hidden danger treatment and elimination.
10. The method according to claim 6, wherein the fault type is identified by the fault identification module, and the identification process comprises the following steps:
5-1), carrying out voltage and current comparison: identifying the fault type as "parallel arc" if Ui (t +1) < Ui (t) and Ui (t) -Ui (t +1) < Ui valves, while Ii (t +1) > Ii (t) and Ii (t +1) -Ii (t) > Ii valves, and performing a voltage comparison if the corresponding conditions are not met;
5-2), performing voltage comparison: if Ui (t +1) < Ui (t) and Ui (t) -Ui (t +1) > Ui valve, identifying the fault type as 'series arc', and if the corresponding condition is not met, carrying out current comparison;
5-3), carrying out current comparison: identifying the fault type as 'line overload' if Ii (t +1) -Ii (t) > Ii valve; if Ii (t +1) < Ii (t) and Ii (t) -Ii (t +1) > Ii valve, identify the fault type as "leakage current"; if the current comparison does not belong to the two conditions, the fault type is identified as unknown fault.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921573A (en) * | 2019-03-01 | 2019-06-21 | 中国科学院合肥物质科学研究院 | A kind of system that extensive motor predictive maintenance is realized based on edge calculations gateway |
| CN110414871A (en) * | 2019-08-23 | 2019-11-05 | 贵州电网有限责任公司 | Substation secondary device fault monitoring system and monitoring method based on edge calculations |
| CN110988543A (en) * | 2019-12-16 | 2020-04-10 | 广西电网有限责任公司电力科学研究院 | Distribution automation terminal detects monitored control system |
| CN111398740A (en) * | 2020-04-29 | 2020-07-10 | 国网湖南省电力有限公司 | Low-voltage power distribution network electricity stealing leakage detection device, monitoring system and monitoring method |
| CN111736038A (en) * | 2020-08-18 | 2020-10-02 | 广东冠能电力科技发展有限公司 | Edge calculating device for power distribution network fault positioning and power distribution network fault positioning system |
| CN216144898U (en) * | 2021-08-26 | 2022-03-29 | 国网江苏省电力有限公司常州供电分公司 | Four-stage protection safety power utilization monitoring system |
-
2021
- 2021-08-26 CN CN202110987236.9A patent/CN113552449B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921573A (en) * | 2019-03-01 | 2019-06-21 | 中国科学院合肥物质科学研究院 | A kind of system that extensive motor predictive maintenance is realized based on edge calculations gateway |
| CN110414871A (en) * | 2019-08-23 | 2019-11-05 | 贵州电网有限责任公司 | Substation secondary device fault monitoring system and monitoring method based on edge calculations |
| CN110988543A (en) * | 2019-12-16 | 2020-04-10 | 广西电网有限责任公司电力科学研究院 | Distribution automation terminal detects monitored control system |
| CN111398740A (en) * | 2020-04-29 | 2020-07-10 | 国网湖南省电力有限公司 | Low-voltage power distribution network electricity stealing leakage detection device, monitoring system and monitoring method |
| CN111736038A (en) * | 2020-08-18 | 2020-10-02 | 广东冠能电力科技发展有限公司 | Edge calculating device for power distribution network fault positioning and power distribution network fault positioning system |
| CN216144898U (en) * | 2021-08-26 | 2022-03-29 | 国网江苏省电力有限公司常州供电分公司 | Four-stage protection safety power utilization monitoring system |
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