CN114552544A - Line loss fault monitoring system, line loss monitoring method and line loss monitoring device - Google Patents
Line loss fault monitoring system, line loss monitoring method and line loss monitoring device Download PDFInfo
- Publication number
- CN114552544A CN114552544A CN202210143147.0A CN202210143147A CN114552544A CN 114552544 A CN114552544 A CN 114552544A CN 202210143147 A CN202210143147 A CN 202210143147A CN 114552544 A CN114552544 A CN 114552544A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- line loss
- line
- power
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The invention provides a line loss fault monitoring system, a line loss monitoring method and a line loss monitoring device, wherein the system comprises a first switch, a transformer, a first circuit breaker, a plurality of second circuit breakers and a plurality of household electric meters; the first switch is connected to one end of the transformer, the other end of the transformer is connected to one end of the first circuit breaker, the other end of the first circuit breaker is connected to one end of the second circuit breaker, and the other end of the second circuit breaker is connected to the household electricity meter; the scheme can not only monitor the line loss condition of the distribution terminal of the transformer area in real time, reduce faults and economic losses caused by line loss, but also better realize electric energy matching and monitor the electricity stealing behavior more accurately and efficiently. In addition, this application technical scheme simple structure, control is convenient, has higher practical value in practical application, but wide application in distribution end control technical field.
Description
Technical Field
The invention relates to the technical field of power distribution terminal control, in particular to a line loss fault monitoring system, a line loss monitoring method and a line loss monitoring device.
Background
With the rapid development of national economy, the demand on energy is increasing day by day, the requirement on the quality of electric energy is higher and higher, and new requirements are provided for responding to the construction of smart cities and the power distribution control and monitoring of transformer substations.
However, in the related art, most of the monitoring problems of the line loss of the transformer area cannot be monitored in real time in the current life, the faults are usually discovered and solved only by the power supply side after the faults occur, time and labor are wasted, large loss is caused, energy waste and resource waste are caused, and a large amount of labor is also caused.
Disclosure of Invention
In view of the above, to at least partially solve one of the above technical problems, embodiments of the present invention provide a line loss fault monitoring system, a line loss monitoring method and a line loss monitoring device, which can reduce faults and economic losses caused by line loss.
On one hand, the technical scheme of the application provides a line loss fault monitoring system, which comprises a first switch, a transformer, a first circuit breaker, a plurality of second circuit breakers and a plurality of household electric meters;
the first switch is connected to one end of the transformer, the other end of the transformer is connected to one end of the first circuit breaker, the other end of the first circuit breaker is connected to one end of the second circuit breaker, and the other end of the second circuit breaker is connected to the household electricity meter;
the first circuit breaker is used for cutting off or switching on a first-stage distribution line; the second circuit breaker is used for cutting off or switching on the non-first-stage distribution line.
In a possible embodiment of the solution of the present application, the system further comprises a distributed photovoltaic power supply, the output of which is connected to the other end of the first circuit breaker or to one end of the second circuit breaker.
In a feasible embodiment of the scheme of the application, the system further comprises an edge computing gateway, the household electricity meter is provided with an RS485 port, and the household electricity meter is connected to the edge computing gateway through the RS485 port.
In a possible embodiment of the solution of the present application, the system further comprises a microcontroller and an alarm module, the microcontroller being connected to the other end of the second circuit breaker, the microcontroller being connected to the alarm module.
In a possible embodiment of the present disclosure, the household electricity meter further includes an ammeter and a voltmeter, one end of the ammeter is connected to the other end of the second breaker, and the other end of the ammeter is connected to one end of the microcontroller; one end of the voltmeter is connected with the other end of the second circuit breaker, and the other end of the voltmeter is connected to one end of the microcontroller.
In a possible embodiment of the solution of the present application, the system further comprises an EMS immunity module, and the EMS immunity module is connected to the microcontroller.
On the other hand, the technical solution of the present application further provides a line loss monitoring method, which is applied to the line loss fault monitoring system described above, and includes the following steps:
acquiring power utilization parameters in a current line;
according to a preset first preset threshold value, determining that the power utilization parameter is not smaller than the first preset threshold value, and marking the current circuit as a three-phase unbalanced state;
and triggering an adjustment signaling according to the electricity utilization parameters of the three-phase unbalanced state, and controlling a first circuit breaker to cut off a first-stage distribution line or controlling a second circuit breaker to cut off a non-first-stage distribution line according to the adjustment signaling.
In a possible embodiment of the present disclosure, after the step of controlling the first circuit breaker and/or the second circuit breaker to break the current line according to the adjustment signaling, the method further includes:
and supplying power to the current line through a distributed photovoltaic power supply.
In a possible embodiment of the present disclosure, the step of determining that the power consumption parameter is not less than the first preset threshold and marking the current circuit as a three-phase unbalanced state includes:
uploading the power utilization parameters to an edge computing gateway, and computing the power utilization parameters through the edge computing gateway to obtain power utilization power;
and determining that the power utilization power is not less than the first preset threshold value, and marking the current circuit as a three-phase unbalanced state.
On the other hand, the technical solution of the present invention further provides a line loss monitoring device, which includes:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is caused to perform a line loss monitoring method as described above.
Advantages and benefits of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention:
the technical scheme of this application provides a station area line loss fault monitoring scheme that can be applied to the distribution terminal, can not only surpass the disconnection way under the condition of predetermineeing the threshold value through the circuit breaker real-time supervision station area distribution terminal line loss condition, on the line loss condition, reduces because of the trouble and the economic loss that the line loss caused, and can realize the electric energy ratio betterly, monitors the electricity stealing behavior more accurately high-efficiently. In addition, the technical scheme has the advantages of simple structure, convenience in control and higher use value in practical application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a line loss fault monitoring system according to the present disclosure;
fig. 2 is a flowchart of steps of a line loss fault monitoring method provided in the technical solution of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
Aiming at the defects and shortcomings of the related technology described in the background art, the technical scheme of the application provides a distribution area line loss fault monitoring system and a line loss monitoring method capable of realizing energy saving of a power distribution terminal.
In a first aspect, as shown in fig. 1, the present technology provides a line loss fault monitoring system, which mainly includes a first switch, a transformer, a first circuit breaker, a plurality of second circuit breakers, and a plurality of household meters; the first switch is connected to one end of the transformer, the other end of the transformer is connected to one end of the first circuit breaker, the other end of the first circuit breaker is connected to one end of the second circuit breaker, and the other end of the second circuit breaker is connected to the household electricity meter. The first circuit breaker is used for cutting off or switching on a first-stage distribution line; the second circuit breaker is used for cutting off or switching on the non-first-stage distribution line. In this context, the first-stage distribution line mainly refers to a line connected to a first-stage distribution device in the system, and specifically refers to a part of the circuit including the first breaker in the embodiment; while the non-primary distribution line refers to a circuit connected to a secondary or tertiary distribution device, it may refer to the remaining portion of the circuit (other than the primary distribution line) including the second breaker in embodiments.
Specifically, in the embodiment system, the first switch may be a 10KV switch, and in the system, the 10KV switch is mainly used for actively cutting off the power supply of the current line, so as to isolate the current line from the power supply of the platform area. The transformer in the embodiment can be a 10KV/0.4KV transformer, and is mainly used for converting a 10KV high-voltage power supply provided by a transformer area into a 0.4KV power supply. The first circuit breaker in the system can be a frame circuit breaker, and the second circuit breaker in the system can be a molded case circuit breaker, wherein one end of the frame circuit breaker is connected with a 10kV/0.4kV transformer, and the other end of the frame circuit breaker is connected to the molded case circuit breaker of each building; the power distribution circuit comprises a first-level power distribution device, a second-level power distribution device, a third-level power distribution device, a molded case circuit breaker and a power distribution circuit, wherein the first-level power distribution device is used for distributing power of a certain circuit of the first-level power distribution device to nearby loads, the second-level power distribution device and the third-level power distribution device are further used for distributing power of a certain circuit of the first-level power distribution device to the nearby loads, and the molded case circuit breaker is mainly used for providing protection, detection, isolation control and the like for the loads in the power distribution circuit of the second-level power distribution device and/or the third-level power distribution device. The household electricity meter in the system is mainly used for monitoring the load condition of the user in real time.
In some alternative embodiments, the embodiment systems further comprise a distributed photovoltaic power source; wherein an output end of the distributed photovoltaic power supply is connected to the other end of the first circuit breaker or one end of the second circuit breaker.
In the embodiment system, the distributed photovoltaic power supply can effectively reduce the load of the power transmission line, reduce the line loss and play a role in energy conservation. Illustratively, when a line fault occurs in a line, the line fault includes but is not limited to conditions of electricity stealing, single-phase grounding, multi-phase grounding, harmonic waves, three-phase imbalance and the like, in order to protect the line, a phase change switch in a frame circuit breaker and a molded case circuit breaker automatically works to enable the line to reach a new three-phase balance; when any point between the frame breaker and the input end in the system breaks down, solar energy can be converted into stored energy of electric energy through the distributed photovoltaic power supply in the system to temporarily supply power to the user, so that the power utilization requirements of normal life and work of the user can be maintained.
In some optional embodiments, the system further comprises an edge computing gateway, wherein the service meter is provided with an RS485 port, and the service meter is connected to the edge computing gateway through the RS485 port.
In the system of the embodiment, the household meters are provided with RS485 ports, all electric quantity data can be transmitted to the edge computing gateway through the RS485 ports in the working process of the system of the embodiment to be computed to obtain the power of each point and obtain the difference value to compute the line loss between each port, the threshold value is set at the cloud end, and an alarm can be initiated when the line loss exceeds the threshold value, so that a power supply side can conveniently check the reason, particularly the reason is electricity stealing and leakage or line aging faults.
In some optional embodiments, the system may further comprise a microcontroller and an alarm module, wherein one end of the microcontroller is connected to the other end of the second circuit breaker, and the other end of the microcontroller is connected to the alarm module.
In an embodiment, the microcontroller may be configured to perform signal transmission interaction with the edge computing gateway, for example, when the edge computing gateway performs computation to determine that the current power data in the line generates a set threshold, the edge computing gateway triggers a corresponding alarm signal and feeds the alarm signal back to the microcontroller in the system, the microcontroller triggers a corresponding control signal according to the alarm signal to send to an alarm module in the system, and when the phase change switches in the frame circuit breaker and the molded case circuit breaker automatically operate to make the line reach a new three-phase balance, the alarm module gives an alarm according to the control signal of the microcontroller. The alarm module in the system of the embodiment can be selected from but not limited to an LED lamp, a buzzer and the like.
In some alternative embodiments, the household electricity meter in the system may include an ammeter and a voltmeter, wherein one end of the ammeter is connected to the other end of the second breaker, and the other end of the ammeter is connected to one end of the microcontroller; one end of the voltmeter is connected with the other end of the second circuit breaker, and the other end of the voltmeter is connected to one end of the microcontroller.
Specifically, the household electricity meter in the system may include an ammeter and a voltmeter, which are respectively used for acquiring current data and voltage data in a current line, sending power consumption parameters such as the current data and the voltage data to the microcontroller, calculating by using a calculation program built in the microcontroller to obtain specific power consumption power or power consumption, transmitting the calculated specific data value to the edge calculation gateway through the RS485 port to calculate power of each point, and obtaining a difference value to calculate line loss between each port. It should be noted that, the power consumption data in the technical solution of the present application not only includes current data and voltage data, but also includes other specific values capable of representing the line state, such as line temperature.
In some alternative embodiments, the system may further comprise an immunity module, wherein the immunity module is coupled to the microcontroller.
Specifically, the anti-interference module in the embodiment system can be an EMS anti-interference module, and the electromagnetic compatibility of the EMS anti-interference module adopts the IEC4 standard, so that the electromagnetic interference existing in the circuit can be shielded.
An embodiment system provided by the technical scheme of the application is described in detail with reference to the attached drawing 1:
the embodiment mainly comprises a 10kV switch, a 10kV/0.4kV transformer, a frame circuit breaker, a distributed photovoltaic power supply, a molded case circuit breaker and an entrance ammeter. One end of the 10kV switch is connected with a power grid alternating current bus, the other end of the 10kV switch is connected with a 10kV/0.4kV transformer, and the output end of an electricity meter of the 10kV switch is connected to an RS485 port; one end of the frame breaker is connected with a 10kV/0.4kV transformer, the other end of the frame breaker is connected with a molded case circuit breaker of each building, and the output end of a built-in electricity meter of the frame breaker is connected to an RS485 port; the distributed photovoltaic power supply is connected between the frame circuit breaker and the molded case circuit breaker in a grid-connected mode, and the output end of a built-in electricity meter of the distributed photovoltaic power supply is connected to an RS485 port; the household electric meter of each household is connected into the corresponding molded case circuit breaker, and the output end of the household electric meter is also connected to the RS485 port.
Specifically, the frame circuit breaker is used for protecting a circuit, the three-phase balance is automatically adjusted through an internal phase change switch when the three phases are unbalanced, the distributed photovoltaic power supply can effectively reduce the load of a power transmission line and reduce line loss, and the energy-saving effect is achieved, wherein an RS485 port, a voltmeter and an ammeter are arranged in a 10kV switch, the frame circuit breaker, a plastic shell circuit breaker and a household ammeter, all electric quantity data can be transmitted to an edge calculation gateway through the RS485 port in the working process to be calculated to obtain the power of each point and obtain a difference value to calculate the line loss between each port, a threshold value is set at the cloud end, an alarm can be initiated when the line loss exceeds the threshold value, the reason is conveniently checked by a power supply side, and the reason is determined to be electricity stealing and leaking or line aging faults.
On the other hand, as shown in fig. 2, the present application provides a line loss monitoring method capable of implementing the method in the first aspect, where the method includes steps S100 to S300:
s100, acquiring power utilization parameters in a current line;
s200, according to a preset first preset threshold, determining that the power utilization parameter is not smaller than the first preset threshold, and marking the current circuit as a three-phase unbalanced state;
s300, triggering an adjusting signaling according to the electricity utilization parameters of the three-phase unbalanced state, and controlling a first breaker to cut off a first-stage distribution line or controlling a second breaker to cut off a non-first-stage distribution line according to the adjusting signaling.
Specifically, according to the technical scheme of the application, a control strategy for monitoring the line loss fault and saving energy at the power distribution terminal is provided based on the line loss fault monitoring system in the first aspect, and electric quantity data obtained by a current power consumption line of the system, for example, when power consumption exceeds a threshold value through calculation, the line is considered to have a fault (fault conditions include but are not limited to power stealing, single-phase grounding, multi-phase grounding, harmonic waves, three-phase imbalance and the like), for example, when the three-phase imbalance occurs, phase change switches in a frame circuit breaker and a molded case circuit breaker automatically work to enable the line to reach a new three-phase balance. The specific calculation process is as follows:
PI1＝II1×UI1 (1)
PI2＝II2×UI2 (2)
ΔP1＝PI1-PI2 (3)
ΔP2＝PI1+Plight (es)-P0 (4)
Wherein, PI1Refers to the actual input power, I, of a 10kV/0.4kV transformer in primary distributionI1For inputting a current value, U, of a 10kV/0.4kV transformerI1The actual voltage value of the high-voltage side of the transformer is obtained; pI2Refers to the input power of the secondary distribution equipment, i.e. the output voltage of the low-voltage side of a 10kV/0.4kV transformer, II1Is the output current value of a 10kV/0.4kV transformer, UI2The actual voltage value of the low-voltage side of the transformer is obtained; pLight (es)Refers to the output power, P, of the distributed photovoltaic power supply0And the real-time power utilization of the user is measured by the user electric meter. Delta P1And Δ P2Are all required in the embodimentData of the quantity of electricity to be monitored, Δ P1Is the difference, Δ P, between the power before and after transformation2Refers to the total power input to the system (including the input power at the time of primary distribution and the output power of the distributed photovoltaic power source). And each part can transmit data to the edge computing gateway through the RS485 port to automatically obtain a power difference value and compare the power difference value with a threshold value through the power which is obtained through calculation and needs to be monitored, and if the power difference value exceeds the threshold value, an alarm sent out by a corresponding line can be triggered, so that a power supply side technician is guided to overhaul the corresponding fault line. The distributed photovoltaic power modules in the control strategy play a role in reducing the voltage supply under the condition that all data in the system are normal, and can effectively reduce line loss.
In some optional embodiments, after the step of controlling the first circuit breaker and/or the second circuit breaker to break the current line according to the adjustment signaling, the method may further include the step S400 of:
and S400, supplying power to the current line through a distributed photovoltaic power supply.
Specifically, when any point between the frame circuit breaker and the input end in the system breaks down, the energy storage device in the system can supply power to the user for a short time, so that the normal life and work of the user are maintained.
In some optional embodiments, the step S200 of determining that the power consumption parameter is not less than the first preset threshold and marking the current circuit as a three-phase unbalanced state may include steps S210 to S220:
s210, uploading the power utilization parameters to an edge computing gateway, and computing the power utilization power according to the power utilization parameters through the edge computing gateway;
s220, determining that the power consumption is not less than the first preset threshold value, and marking the current circuit as a three-phase unbalanced state.
Specifically, in the working process of the embodiment, all electric quantity data can be transmitted to the edge computing gateway through the RS485 port to be computed to obtain the power of each point and obtain the difference value to compute the line loss between each port, the threshold value is set at the cloud end, and an alarm can be initiated when the line loss exceeds the threshold value, so that a power supply side can conveniently check the reason and determine whether the reason is electricity stealing and leakage or line aging faults.
In a third aspect, the present disclosure further provides a line loss monitoring apparatus, which includes at least one processor 100; at least one memory 200, the memory 200 for storing at least one program; when the at least one program is executed by the at least one processor, the at least one processor is caused to perform a line loss monitoring method as in the second aspect.
From the above specific implementation process, it can be concluded that the technical solution provided by the present invention has the following advantages or advantages compared to the prior art:
1. the technical scheme of the application provides the edge computing gateway, carries out real-time supervision and can effectively react to all key positions in the circuit, compares with the device that does not monitor at present for the majority, can respond to the fault situation more rapidly, can effectively reduce economic loss.
2. The addition of distributed photovoltaic power supply in the technical scheme of the application can effectively reduce line loss, prolong the service life of accessories and achieve the effects of energy conservation and emission reduction.
3. According to the technical scheme, when only part of lines break down, the distributed photovoltaic power supply can supply power to users for a short time, the power supply time of the distributed photovoltaic power supply is longer than the time for line investigation and maintenance, economic loss can be reduced, and daily work and life of the users cannot be influenced.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and/or features may be integrated in a single physical device and/or software module, or one or more of the functions and/or features may be implemented in a separate physical device or software module. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A line loss fault monitoring system is characterized by comprising a first switch, a transformer, a first circuit breaker, a plurality of second circuit breakers and a plurality of household electric meters;
the first switch is connected to one end of the transformer, the other end of the transformer is connected to one end of the first circuit breaker, the other end of the first circuit breaker is connected to one end of the second circuit breaker, and the other end of the second circuit breaker is connected to the household electricity meter;
the first circuit breaker is used for cutting off or switching on a first-stage distribution line; the second circuit breaker is used for cutting off or switching on the non-first-stage distribution line.
2. The line loss fault monitoring system of claim 1, further comprising a distributed photovoltaic power supply, an output of the distributed photovoltaic power supply being connected to either the other end of the first circuit breaker or one end of the second circuit breaker.
3. The line loss fault monitoring system of claim 1, further comprising an edge computing gateway, wherein the service meter is provided with an RS485 port, and wherein the service meter is connected to the edge computing gateway through the RS485 port.
4. The line loss fault monitoring system of claim 1, further comprising a microcontroller and an alarm module, wherein the microcontroller is connected to the other end of the second circuit breaker and the microcontroller is connected to the alarm module.
5. The line loss fault monitoring system of claim 4, wherein the household electricity meter further comprises an ammeter and a voltmeter, one end of the ammeter is connected to the other end of the second breaker, and the other end of the ammeter is connected to one end of the microcontroller; one end of the voltmeter is connected with the other end of the second circuit breaker, and the other end of the voltmeter is connected to one end of the microcontroller.
6. The line loss fault monitoring system of claim 4, further comprising an immunity module coupled to the microcontroller.
7. A line loss monitoring method applied to a line loss fault monitoring system as claimed in any one of claims 1 to 6, comprising the steps of:
acquiring power utilization parameters in a current line;
according to a preset first preset threshold value, determining that the power utilization parameter is not smaller than the first preset threshold value, and marking the current circuit as a three-phase unbalanced state;
and triggering an adjustment signaling according to the electricity utilization parameters of the three-phase unbalanced state, and controlling a first circuit breaker to cut off a first-stage distribution line or controlling a second circuit breaker to cut off a non-first-stage distribution line according to the adjustment signaling.
8. The line loss monitoring method according to claim 7, wherein after the step of controlling the first circuit breaker and/or the second circuit breaker to break the current line according to the adjustment signaling, the method further comprises:
and supplying power to the current line through a distributed photovoltaic power supply.
9. The line loss monitoring method of claim 7, wherein the step of determining that the power consumption parameter is not less than the first preset threshold and marking the current circuit as a three-phase unbalanced state comprises:
uploading the power utilization parameters to an edge computing gateway, and computing the power utilization parameters through the edge computing gateway to obtain power utilization power;
and determining that the power utilization power is not less than the first preset threshold value, and marking the current circuit as a three-phase unbalanced state.
10. A line loss monitoring device, comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, the at least one program causes the at least one processor to perform a method of line loss monitoring according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143147.0A CN114552544A (en) | 2022-02-16 | 2022-02-16 | Line loss fault monitoring system, line loss monitoring method and line loss monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143147.0A CN114552544A (en) | 2022-02-16 | 2022-02-16 | Line loss fault monitoring system, line loss monitoring method and line loss monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114552544A true CN114552544A (en) | 2022-05-27 |
Family
ID=81675356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210143147.0A Pending CN114552544A (en) | 2022-02-16 | 2022-02-16 | Line loss fault monitoring system, line loss monitoring method and line loss monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114552544A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410910A (en) * | 2021-06-22 | 2021-09-17 | 国网陕西省电力公司电力科学研究院 | Power distribution station monitoring system and monitoring method based on intelligent fusion terminal |
| CN214506661U (en) * | 2020-12-23 | 2021-10-26 | 福建网能科技开发有限责任公司 | System based on low-voltage transformer area line loss rapid positioning |
-
2022
- 2022-02-16 CN CN202210143147.0A patent/CN114552544A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214506661U (en) * | 2020-12-23 | 2021-10-26 | 福建网能科技开发有限责任公司 | System based on low-voltage transformer area line loss rapid positioning |
| CN113410910A (en) * | 2021-06-22 | 2021-09-17 | 国网陕西省电力公司电力科学研究院 | Power distribution station monitoring system and monitoring method based on intelligent fusion terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102055202B (en) | Three-phase balancing power-supply energy-saving control management system | |
| CN102324741B (en) | Micro-power grid off-grid energy balance and control device and method | |
| CN106684896A (en) | Three phase four wire system ship power grid power management system and method | |
| CN103138390A (en) | Power distribution network fault handling method based on self-recovering control | |
| CN102664459B (en) | Medium-voltage electrically-propelled ship power management system and management method | |
| CN214204284U (en) | Multi-energy hybrid power station system suitable for multiple application scenes | |
| CN103457296B (en) | A kind of independent operating micro-grid master control power-supply switching method | |
| CN101764550A (en) | Integrated protection controller for wireless intelligent motor | |
| CN107181321B (en) | Method for realizing rapid load pulling based on power grid topological structure | |
| CN108400650A (en) | Power of alterating and direct current integral system | |
| CN113937747A (en) | Energy control system and method for direct-current networking ship hybrid laboratory | |
| CN103354361A (en) | Low-voltage three-phase load automation balancing device | |
| CN202276135U (en) | Comprehensive protection controller for wireless intelligent motor | |
| CN204885910U (en) | Intelligent low tension distribution box | |
| CN114552544A (en) | Line loss fault monitoring system, line loss monitoring method and line loss monitoring device | |
| CN111426983A (en) | Single-phase earth fault positioning system of power distribution overhead cable hybrid line | |
| CN114336980A (en) | Intelligent cloud power distribution method and system based on instruction transmission | |
| CN114598260A (en) | Photovoltaic power station area management system based on fusion terminal and management method thereof | |
| CN115378031A (en) | Low-voltage distributed photovoltaic metering and collecting system and control method | |
| CN210273512U (en) | Micro-grid control system | |
| CN210111608U (en) | Gas and steam combined cycle distributed energy three-power-source quick switching system | |
| CN112448415A (en) | Safety protection equipment based on distributed photovoltaic grid connection | |
| CN111404161A (en) | Intelligent power consumption management and inter-station-area mutual-aid transfer system and method | |
| CN216355973U (en) | Energy control system of direct-current networking ship hybrid laboratory | |
| Lu et al. | Application Topology Configuration of Distributed Feeder Automation Based on IEC 61850 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |