CN110649602A - Electric power early warning method and electric power early warning system - Google Patents
Electric power early warning method and electric power early warning system Download PDFInfo
- Publication number
- CN110649602A CN110649602A CN201910905298.3A CN201910905298A CN110649602A CN 110649602 A CN110649602 A CN 110649602A CN 201910905298 A CN201910905298 A CN 201910905298A CN 110649602 A CN110649602 A CN 110649602A
- Authority
- CN
- China
- Prior art keywords
- outgoing line
- bus
- harmonic
- harmonic information
- preset requirement
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000012806 monitoring device Methods 0.000 claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 238000004590 computer program Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to the technical field of electric power, and discloses an electric power early warning method and device, wherein the method comprises the following steps: monitoring current bus harmonic wave information through a bus monitoring device, and sending the current bus harmonic wave information to a plurality of corresponding outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one and is used for monitoring outgoing line harmonic information of the corresponding outgoing line and controlling the on-off of the corresponding outgoing line and the bus; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus. The invention can realize the intelligent and rapid bus harmonic pollution treatment.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to an electric power early warning method and an electric power early warning system.
Background
With the development of the power grid technology in China, power electronic equipment is widely applied to various fields, great convenience is brought to the life of people, the development of the frequency conversion technology brings great pollution to a power grid, and higher harmonic current and harmonic voltage generated by the frequency conversion equipment have great influence on the voltage of the power grid and even influence on the stable operation of the whole power grid.
In order to control the power grid harmonic wave well, the harmonic wave of the power grid needs to be detected and processed in time. However, the existing harmonic detection method has low detection speed and low intelligent degree, so that the early warning difficulty of harmonic pollution is high, and the timely treatment of the harmonic pollution is not facilitated.
Disclosure of Invention
In view of this, embodiments of the present invention provide a harmonic early warning method and a harmonic early warning system, so as to solve the problems that a harmonic detection method in the prior art is slow in detection speed and low in intelligence degree, so that the harmonic pollution early warning difficulty is high, and the harmonic pollution is not favorable for timely processing.
The first aspect of the embodiments of the present invention provides an electric power early warning method, including: monitoring current bus harmonic wave information through a bus monitoring device, and sending the current bus harmonic wave information to a plurality of corresponding outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one, and the outgoing line control devices are used for monitoring outgoing line harmonic information of the corresponding outgoing lines and controlling the on-off of the corresponding outgoing lines and the bus;
before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus.
Optionally, after the outgoing line is controlled to be disconnected from the bus, the method further includes:
before the control logic is executed next time, the remaining outgoing line control devices detect whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line which has the largest influence on the current bus harmonic information controls the corresponding outgoing line to be disconnected from the bus;
wherein the control logic is executed once every preset time.
Optionally, if the current bus harmonic information does not satisfy the first preset requirement, the outgoing line control device corresponding to the outgoing line having the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line disconnection and the bus, including:
if the current bus harmonic information does not meet the first preset requirement, each outgoing line control device detects whether the outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement; the second preset requirement is a preset harmonic requirement corresponding to each outgoing line;
and in the outgoing lines of which the outgoing line harmonic information does not meet the second preset requirement, controlling the corresponding outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information to disconnect the outgoing line from the bus.
Optionally, if the outgoing harmonic information of each outgoing line meets the second preset requirement, the bus monitoring device sends an alarm signal.
Optionally, the second preset requirement is a total distortion rate of three-phase voltage harmonics and three-phase current harmonics of each outgoing line.
Optionally, each outgoing line control device detects whether outgoing line harmonic information of a corresponding outgoing line meets a second preset requirement, including:
the outgoing line control device detects the total distortion rate of the three-phase voltage harmonic and the three-phase current harmonic of the corresponding outgoing line,
and if the total distortion rate of the voltage harmonic of a certain phase and the current harmonic of a certain time exceed the corresponding threshold values at the same time, judging that the line harmonic information does not meet the second preset requirement.
Optionally, the method for determining the influence of the outgoing line harmonic information on the current bus harmonic information includes:
for outgoing lines which do not meet a second preset requirement, judging the influence of each outgoing line harmonic information on the current bus harmonic information according to the three-phase voltage harmonic total distortion rate and the three-phase current harmonic of each outgoing line;
the larger the total distortion rate of the three-phase voltage harmonic and the degree of the three-phase current harmonic exceeding the corresponding threshold value are, the larger the influence of the outgoing line harmonic information on the current bus harmonic information is.
Optionally, the method further includes:
if the network between the bus monitoring device and each outgoing line control device is interrupted, each outgoing line control device independently monitors whether the current outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement, and if the current outgoing line harmonic information does not meet the second preset requirement, the corresponding outgoing line is controlled to be disconnected from the bus.
A second aspect of an embodiment of the present invention provides an electric power early warning system, including: the bus monitoring device and the plurality of outgoing line control devices;
the bus monitoring device is used for monitoring the current bus harmonic information of the bus and sending the current bus harmonic information to the outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one;
the outgoing line control device is used for monitoring outgoing line harmonic information of a corresponding outgoing line and controlling the on-off of the corresponding outgoing line; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus.
A third aspect of embodiments of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the harmonic warning method according to any one of the first aspect of the embodiments of the present invention.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the method comprises the steps that current bus harmonic wave information is monitored through a bus monitoring device, and the current bus harmonic wave information is sent to a plurality of corresponding outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one, and the outgoing line control devices are used for monitoring outgoing line harmonic information of the corresponding outgoing lines and controlling the on-off of the corresponding outgoing lines and the bus; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus. Therefore, when the current bus harmonic information does not meet a first preset requirement, for example, when the bus harmonic is too high, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information can be controlled to control the corresponding outgoing line to be disconnected with the bus, so that the influence of the harmonic generated by the device on one side of the outgoing line on the bus is reduced, and the intelligent and rapid bus harmonic pollution treatment is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of an implementation of an electric power early warning method provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electric power early warning system provided in an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 is a flowchart of an implementation of the power warning method according to the embodiment of the present invention, which is detailed as follows:
in step 101, current bus harmonic information is monitored.
In the embodiment of the invention, a bus monitoring device can be configured on the bus, and the current bus harmonic information is monitored through the bus monitoring device.
In step 102, the current bus harmonic information is sent to a plurality of corresponding outgoing line control devices.
In the embodiment of the invention, a plurality of outgoing line control devices can be respectively arranged on a plurality of outgoing lines connected with the bus; the outgoing line control device is used for monitoring outgoing line harmonic information of a corresponding outgoing line and controlling the on-off of the corresponding outgoing line and a bus.
In the embodiment of the invention, each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one; the monitored current bus harmonic information can be sent to the corresponding outgoing line control devices, so that the corresponding outgoing line control devices control the on-off of the corresponding outgoing lines and the buses respectively based on the monitored current bus harmonic information and the outgoing line harmonic information of the corresponding outgoing lines.
In step 103, it is detected whether the current bus harmonic information meets a first preset requirement.
In an embodiment of the present invention, the first preset requirement may specify a requirement of the bus harmonics, such as a requirement of a national standard, which may be, for example, a bus voltage total harmonic distortion rate.
In step 104, if the current bus harmonic information meets the first preset requirement, the control logic is not executed.
In the embodiment of the present invention, if the bus harmonic information monitored by the bus monitoring device meets the first preset requirement, which indicates that the bus operates normally, each outgoing line control device may not execute the control logic, that is, does not perform the control action.
In step 105, if the current bus harmonic information does not meet the first preset requirement, it is determined whether the current outgoing line has the greatest influence on the current bus harmonic information.
In the embodiment of the invention, if the bus harmonic information monitored by the bus monitoring device does not meet the first preset requirement, the harmonic content on the bus exceeds the standard, and corresponding harmonic treatment is required. Therefore, each outgoing line control device can detect outgoing line harmonic information of a current outgoing line of each outgoing line control device and judge whether the current outgoing line has the largest influence on the current bus harmonic information.
In step 106, if the influence of the current outgoing line on the harmonic information of the current bus is the largest, the connection between the current outgoing line and the bus is disconnected.
In the embodiment of the application, the outgoing line control device corresponding to the outgoing line having the largest influence on the current bus harmonic information is used as the target control device, and the target control device is controlled to execute the action logic of disconnecting the current outgoing line from the bus. Therefore, harmonic waves generated by the outgoing line are prevented from being transmitted to the bus, and the bus harmonic waves are reduced.
In the embodiment of the application, if the influence of the current outgoing line on the current bus harmonic information is not the maximum, the outgoing line control device corresponding to the current outgoing line does not execute the control logic. It should be noted that the non-execution control logic is for the current detection result.
Optionally, after the step 106, the method further includes: before the control logic is executed next time, the remaining outgoing line control devices detect whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line which has the largest influence on the current bus harmonic information controls the corresponding outgoing line to be disconnected from the bus; wherein the control logic is executed once every preset time.
In the embodiment of the application, the control logic is executed once every preset time, and the outgoing line with the largest influence on the bus harmonic wave is disconnected in the process of executing the control logic each time until the bus harmonic wave information meets the first preset requirement, so that the harmonic wave processing is realized when the bus harmonic wave information does not meet the first preset requirement. And by means of executing the control logic one by one, the outgoing line which does not affect the bus harmonic wave can be prevented from being turned off by mistake, so that the normal outgoing line can execute the normal power supply work.
Optionally, in one embodiment, the above-mentioned process discs of steps 105 to 106 may each further comprise:
if the current bus harmonic information does not meet the first preset requirement, each outgoing line control device detects whether the outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement; the second preset requirement is a preset harmonic requirement corresponding to each outgoing line;
and in the outgoing lines of which the outgoing line harmonic information does not meet the second preset requirement, controlling the corresponding outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information to disconnect the outgoing line from the bus.
In the embodiment of the invention, when the current bus harmonic information does not meet the first preset requirement, each outgoing line control device can detect whether the outgoing line harmonic information of the outgoing line corresponding to the outgoing line meets the harmonic requirement corresponding to the outgoing line. If not, selecting the outgoing line with the largest influence on the harmonic information of the current bus from the outgoing lines which do not meet the harmonic requirement corresponding to the outgoing line, and controlling the corresponding outgoing line control device to disconnect the selected outgoing line from the bus.
In one embodiment, if the outgoing harmonic information of each outgoing line meets the second preset requirement, which indicates that a problem may exist on the bus side or the bus monitoring device may have a fault, the bus monitoring device sends an alarm signal. The alarm signal can be used for indicating corresponding personnel to check the bus and the bus monitoring device.
Optionally, in an embodiment, the second preset requirement may be a total distortion rate of the three-phase voltage harmonics and three-phase current harmonics of each outgoing line.
Optionally, in an embodiment, the detecting, by each outgoing line control device, whether the outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement may include:
the outgoing line control device detects the total distortion rate of the three-phase voltage harmonic and the three-phase current harmonic of the corresponding outgoing line,
and if the total distortion rate of the voltage harmonic of a certain phase and the current harmonic of a certain time exceed the corresponding threshold values at the same time, judging that the line harmonic information does not meet the second preset requirement.
Optionally, in an embodiment, the method for judging the influence of the harmonic information of each outgoing line on the harmonic information of the current bus may be:
for outgoing lines which do not meet a second preset requirement, judging the influence of each outgoing line harmonic information on the current bus harmonic information according to the three-phase voltage harmonic total distortion rate and the three-phase current harmonic of each outgoing line;
the larger the total distortion rate of the three-phase voltage harmonic and the degree of the three-phase current harmonic exceeding the corresponding threshold value are, the larger the influence of the outgoing line harmonic information on the current bus harmonic information is.
Optionally, in an embodiment, the power early warning method may further include: if the network between the bus monitoring device and each outgoing line control device is interrupted, each outgoing line control device independently monitors whether the current outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement, and if the current outgoing line harmonic information does not meet the second preset requirement, the corresponding outgoing line is controlled to be disconnected from the bus.
In the embodiment of the invention, in order to improve the intelligent degree of harmonic early warning, reduce the dependency on a bus monitoring device and better process harmonic pollution, when a network between the bus monitoring device and the outgoing line control device is interrupted, the outgoing line control device can independently monitor whether the current outgoing line harmonic information corresponding to the outgoing line meets a second preset requirement, and when the current outgoing line harmonic information does not meet the second preset requirement, the corresponding outgoing line is controlled to be disconnected from the bus.
According to the bus harmonic monitoring method, the bus monitoring device monitors the current bus harmonic information and sends the current bus harmonic information to the corresponding outlet control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one, and the outgoing line control devices are used for monitoring outgoing line harmonic information of the corresponding outgoing lines and controlling the on-off of the corresponding outgoing lines and the bus; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus. Therefore, when the current bus harmonic information does not meet a first preset requirement, for example, when the bus harmonic is too high, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information can be controlled to control the corresponding outgoing line to be disconnected with the bus, so that the influence of the harmonic generated by the device on one side of the outgoing line on the bus is reduced, and the intelligent and rapid bus harmonic pollution treatment is realized.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Corresponding to the power early warning method described in the foregoing embodiment, fig. 2 shows a schematic diagram of a power early warning system provided in an embodiment of the present invention. For convenience of explanation, only the portions related to the present embodiment are shown.
As shown in fig. 2, the electric power early warning system 2 includes: a bus monitoring device 20 and a plurality of outlet control devices 21.
The bus monitoring device 20 is configured to monitor current bus harmonic information of a bus and send the current bus harmonic information to the plurality of outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one;
the outgoing line control device 21 is used for monitoring outgoing line harmonic information of a corresponding outgoing line and controlling the on-off of the corresponding outgoing line; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus.
Optionally, the outgoing line control device 21 is further configured to, after controlling the connection between the outgoing line disconnection and the bus, before executing the control logic next time, detect whether current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line having the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line disconnection and the bus; wherein the control logic is executed once every preset time.
Optionally, the outgoing line control devices 21 are further configured to, if the current bus harmonic information does not meet the first preset requirement, detect whether the outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement by each outgoing line control device; the second preset requirement is a preset harmonic requirement corresponding to each outgoing line;
and in the outgoing lines of which the outgoing line harmonic information does not meet the second preset requirement, controlling the corresponding outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information to disconnect the outgoing line from the bus.
Optionally, the outgoing line control device 21 is further configured to send an alarm signal by the bus monitoring device if the outgoing line harmonic information of each outgoing line meets a second preset requirement.
Optionally, the second preset requirement is a total distortion rate of three-phase voltage harmonics and three-phase current harmonics of each outgoing line.
Optionally, the outgoing line control device 21 is further specifically configured to detect a total distortion of three-phase voltage harmonics and three-phase current harmonics corresponding to the outgoing line, and determine that the outgoing line harmonic information does not meet the second preset requirement if the total distortion of the voltage harmonics of a certain phase and the current harmonics of a certain time exceed the corresponding thresholds at the same time.
Alternatively, the outgoing line control device 21 may include a judgment unit configured to: for outgoing lines which do not meet a second preset requirement, judging the influence of each outgoing line harmonic information on the current bus harmonic information according to the three-phase voltage harmonic total distortion rate and the three-phase current harmonic of each outgoing line; the larger the total distortion rate of the three-phase voltage harmonic and the degree of the three-phase current harmonic exceeding the corresponding threshold value are, the larger the influence of the outgoing line harmonic information on the current bus harmonic information is.
Optionally, the outgoing line control device 21 may be further configured to, if the network between the bus monitoring device and each outgoing line control device is interrupted, monitor whether the current outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement by each outgoing line control device alone, and if the current outgoing line harmonic information does not meet the second preset requirement, control the corresponding outgoing line to disconnect from the bus.
According to the bus harmonic monitoring method, the bus monitoring device monitors the current bus harmonic information and sends the current bus harmonic information to the corresponding outlet control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one, and the outgoing line control devices are used for monitoring outgoing line harmonic information of the corresponding outgoing lines and controlling the on-off of the corresponding outgoing lines and the bus; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus. Therefore, when the current bus harmonic information does not meet a first preset requirement, for example, when the bus harmonic is too high, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information can be controlled to control the corresponding outgoing line to be disconnected with the bus, so that the influence of the harmonic generated by the device on one side of the outgoing line on the bus is reduced, and the intelligent and rapid bus harmonic pollution treatment is realized.
An embodiment of the present invention further provides a terminal device, including: a processor, a memory, and a computer program, such as a program, stored in the memory and executable on the processor. The processor, when executing the computer program, performs the steps in the various method embodiments described above, such as steps 101 to 106 shown in fig. 1.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processes to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program in the terminal device.
The terminal device can be a desktop computer, a notebook, a palm computer, a cloud server and other computing devices. The terminal device may include, but is not limited to, a processor, a memory. It will be appreciated by those skilled in the art that the terminal device may include more or fewer components than those shown, or some of the components may be combined, or different components, for example the terminal device may also include an input output device, a network access device, a bus, a display, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be an internal storage unit of the terminal device, such as a hard disk or a memory of the terminal device. The memory may also be an external storage device of the terminal device 7, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the terminal device. Further, the memory may also include both an internal storage unit and an external storage device of the terminal device. The memory is used for storing the computer program and other programs and data required by the terminal device. The memory may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A power early warning method is characterized by comprising the following steps:
monitoring current bus harmonic wave information through a bus monitoring device, and sending the current bus harmonic wave information to a plurality of corresponding outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one, and the outgoing line control devices are used for monitoring outgoing line harmonic information of the corresponding outgoing lines and controlling the on-off of the corresponding outgoing lines and the bus;
before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus.
2. The power alerting method of claim 1, wherein after controlling the outgoing line to be disconnected from the bus, the method further comprises:
before the control logic is executed next time, the remaining outgoing line control devices detect whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line which has the largest influence on the current bus harmonic information controls the corresponding outgoing line to be disconnected from the bus;
wherein the control logic is executed once every preset time.
3. The electric power early warning method of claim 1, wherein if the current bus harmonic information does not meet a first preset requirement, the outgoing line control device corresponding to the outgoing line having the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus in a disconnection manner, and the method comprises:
if the current bus harmonic information does not meet the first preset requirement, each outgoing line control device detects whether the outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement; the second preset requirement is a preset harmonic requirement corresponding to each outgoing line;
and in the outgoing lines of which the outgoing line harmonic information does not meet the second preset requirement, controlling the corresponding outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information to disconnect the outgoing line from the bus.
4. The electric power early warning method of claim 3, wherein if the outlet harmonic information of each outlet line meets a second preset requirement, the bus monitoring device sends out an alarm signal.
5. The electric early warning method of claim 3, wherein the second preset requirement is a total distortion rate of three-phase voltage harmonics and three-phase current harmonics of each outgoing line.
6. The electric power early warning method of claim 5, wherein each outgoing line control device detects whether outgoing line harmonic information of a corresponding outgoing line meets a second preset requirement, and the method comprises the following steps:
the outgoing line control device detects the total distortion rate of the three-phase voltage harmonic and the three-phase current harmonic of the corresponding outgoing line,
and if the total distortion rate of the voltage harmonic of a certain phase and the current harmonic of a certain time exceed the corresponding threshold values at the same time, judging that the line harmonic information does not meet the second preset requirement.
7. The electric power early warning method of claim 5, wherein the method for judging the influence of each outlet line harmonic information on the current bus harmonic information comprises the following steps:
for outgoing lines which do not meet a second preset requirement, judging the influence of each outgoing line harmonic information on the current bus harmonic information according to the three-phase voltage harmonic total distortion rate and the three-phase current harmonic of each outgoing line;
the larger the total distortion rate of the three-phase voltage harmonic and the degree of the three-phase current harmonic exceeding the corresponding threshold value are, the larger the influence of the outgoing line harmonic information on the current bus harmonic information is.
8. The power alerting method of any one of claims 1 to 7, further comprising:
if the network between the bus monitoring device and each outgoing line control device is interrupted, each outgoing line control device independently monitors whether the current outgoing line harmonic information of the corresponding outgoing line meets a second preset requirement, and if the current outgoing line harmonic information does not meet the second preset requirement, the corresponding outgoing line is controlled to be disconnected from the bus.
9. An electric power warning system, comprising: the bus monitoring device and the plurality of outgoing line control devices;
the bus monitoring device is used for monitoring the current bus harmonic information of the bus and sending the current bus harmonic information to the outgoing line control devices; each outgoing line control device corresponds to a plurality of outgoing lines connected with the bus one by one;
the outgoing line control device is used for monitoring outgoing line harmonic information of a corresponding outgoing line and controlling the on-off of the corresponding outgoing line; before executing the control logic, the outgoing line control device detects whether the current bus harmonic information meets a first preset requirement, if the current bus harmonic information meets the first preset requirement, the control logic is not executed, and if the current bus harmonic information does not meet the first preset requirement, the outgoing line control device corresponding to the outgoing line with the largest influence on the current bus harmonic information controls the connection between the corresponding outgoing line and the bus.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905298.3A CN110649602A (en) | 2019-09-24 | 2019-09-24 | Electric power early warning method and electric power early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905298.3A CN110649602A (en) | 2019-09-24 | 2019-09-24 | Electric power early warning method and electric power early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110649602A true CN110649602A (en) | 2020-01-03 |
Family
ID=68992391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910905298.3A Withdrawn CN110649602A (en) | 2019-09-24 | 2019-09-24 | Electric power early warning method and electric power early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110649602A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111563973A (en) * | 2020-04-27 | 2020-08-21 | 湖北同诚通用航空有限公司 | Helicopter power inspection system, inspection method and computer readable storage medium |
-
2019
- 2019-09-24 CN CN201910905298.3A patent/CN110649602A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111563973A (en) * | 2020-04-27 | 2020-08-21 | 湖北同诚通用航空有限公司 | Helicopter power inspection system, inspection method and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110829576B (en) | Uninterruptible power supply input abnormity detection method and system and terminal equipment | |
| CN110474420B (en) | Control method, control device and control terminal of multi-system uninterruptible power supply | |
| CN107547234B (en) | Method and device for managing main board card and standby board card | |
| CN111813638B (en) | Alarm information processing method and device and terminal equipment | |
| CN109842088A (en) | A kind of protection circuit, circuit protection method and equipment | |
| CN110729762B (en) | Island disturbance method, system and terminal equipment | |
| CN110797968B (en) | Power-off prevention method and system for uninterruptible power supply and terminal equipment | |
| CN110649602A (en) | Electric power early warning method and electric power early warning system | |
| CN109638795B (en) | Emergency stop control method and device for string type photovoltaic inverter system | |
| CN109818089B (en) | Battery current limiting method and device | |
| CN112510644B (en) | Short circuit protection method and device for UPS parallel operation system and UPS | |
| CN112421760B (en) | Method and device for controlling exciting current of UPS isolation transformer | |
| CN112688275B (en) | Inverter protection method and device and terminal equipment | |
| CN113866541B (en) | Overvoltage protection test method, device and equipment for direct current converter valve power module | |
| CN113391234B (en) | Leakage detection method, control device and leakage detection equipment | |
| CN112187937B (en) | Unpairing method and device, terminal equipment and storage medium | |
| CN110963255B (en) | Monitoring control method and device for conveyor and terminal | |
| CN113098247B (en) | Power supply anti-peak processing method and device and terminal | |
| CN111181433B (en) | Inverter control method, inverter control device and terminal | |
| CN112866933B (en) | Method, device and terminal for controlling sending of alarm short message | |
| CN113904427B (en) | Power supply mode switching method and device | |
| CN111614100B (en) | Alternating voltage control method and device and terminal equipment | |
| CN114689937A (en) | Harmonic early warning method, device, terminal and storage medium | |
| CN106786432A (en) | A kind of electronic equipment switching device and method | |
| CN113224959A (en) | Inverter control method and UPS |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200103 |
|
| WW01 | Invention patent application withdrawn after publication |