CN113625030B - Electric energy metering method with electric energy monitoring and protecting functions - Google Patents
Electric energy metering method with electric energy monitoring and protecting functions Download PDFInfo
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- CN113625030B CN113625030B CN202110692604.7A CN202110692604A CN113625030B CN 113625030 B CN113625030 B CN 113625030B CN 202110692604 A CN202110692604 A CN 202110692604A CN 113625030 B CN113625030 B CN 113625030B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000005265 energy consumption Methods 0.000 claims description 3
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- 238000012545 processing Methods 0.000 claims description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/25—Arrangements for indicating or signalling faults
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Abstract
The invention relates to the technical field of electric energy metering of an electric power system, in particular to an electric energy metering device with an electric energy monitoring and protecting function and a method thereof, which are characterized in that: the system comprises a voltage detection module, a current detection module, a protection module, a tripping module, a wave recording module, a metering module, a display module, a carrier module, a CPU and a storage unit, wherein the CPU is respectively connected with the voltage detection module, the current detection module, the protection module, the tripping module, the wave recording module, the metering module, the display module, the carrier module and the storage unit for control, so that the system can record the running condition of the power system in real time, can sense the potential safety hazard existing in the system in advance and is prevented from happening; when the fault is actually occurring, the information such as the fault type, the fault reason, the fault result and the like can be stored, the real-time running conditions before and after the fault are stored, and the conditions such as power failure, occurrence of the fault and the like are uploaded in real time, so that the reliability and the power supply benefit of power supply are improved.
Description
Technical Field
The invention relates to the technical field of electric energy metering of electric power systems, in particular to an electric energy metering method with an electric energy monitoring and protecting function.
Background
In life, an electric energy metering device is often needed, but the commonly used electric energy metering device only has a metering function and a carrier communication function, cannot collect power system information and various abnormal information, cannot perform sensing record on various faults, particularly a station area and a terminal station area which are located in remote places, cannot quickly obtain information when the information such as faults and power failure occurs, cannot save fault types and fault information, and cannot provide help for searching, analyzing and solving the faults.
Disclosure of Invention
The invention aims at the defects, and provides a system which can record the running condition of the power system in real time, can sense the potential safety hazard existing in the system in advance and prevent the potential safety hazard from happening; when faults occur, information such as fault types, fault reasons, fault results and the like can be stored, real-time running conditions before and after the faults are stored, and the conditions such as power failure, occurrence of the faults and the like are uploaded in real time, so that the reliability of power supply and the charging quantity monitoring and protection functions of power supply benefits are improved.
The technical scheme of the invention is realized as follows: an electric energy metering method with electric energy monitoring and protecting functions is characterized in that: the device comprises a voltage detection module, a current detection module, a protection module, a tripping module, a wave recording module, a metering module, a display module, a carrier module, a CPU and a storage unit, wherein the CPU is respectively connected with the voltage detection module, the current detection module, the protection module, the tripping module, the wave recording module, the metering module, the display module, the carrier module and the storage unit for control, and the steps are as follows:
s1, firstly, collecting system voltage and current, respectively sending the system voltage and the current into a voltage detection module and a current detection module, and then sending the voltage and the current into a metering module for electric energy metering; then the voltage and the current are sent into a wave recording module to record the voltage and the current;
s2, when the voltage detection module or the current detection module detects that the voltage or the current is abnormal or out of range, a signal is sent out to enable the protection module to act;
s3, determining an action result according to the action result of the protection module, and sending a forecast signal when the system fault is not caused or other equipment is caused when the fault degree is light and the influence is not large;
s4, uploading the forecast signal to a control center through a carrier module; if the fault degree is serious and exceeds the set action limit, the tripping module is controlled to disconnect the rear circuit, and meanwhile, the collected fault signal is transmitted to the control center through the carrier module;
s5, the control center carries out corresponding maintenance according to the fault signal, and can rapidly position to the station area according to the number of the uploading carrier module, so that maintenance personnel can rapidly arrive at the field for maintenance;
s6, the wave recording module monitors the running condition of the system in real time and stores the running real-time condition of the system;
s7, the metering module meters the electric energy consumed in real time;
s8, the display module displays the total energy consumption and the real-time voltage and current, and queries the latest ten fault conditions and the latest one-week operation record;
and S9, the storage unit is used for storing various information.
Further speaking: s6, the wave recording module is used for simulating the stored data into an operation waveform, the waveform is compared with a standard operation waveform under a normal operation condition stored in advance, when the difference between the operation waveform obtained by wave recording and the standard waveform is found to be out of range, an alarm signal is sent out, and meanwhile, the difference degree of the waveform is given out an abnormal classification, so that operators are reminded of the need of paying attention, and corresponding processing is performed according to the abnormal classification condition.
Compared with the prior art, the invention has the following beneficial effects.
1. The electric energy metering and voltage and current detection of the power supply carrier are integrated, and the voltage and current can be monitored and calculated in real time while the electric energy is metered, and the rear power utilization condition can be monitored in real time.
2. The collected voltage and current and related conditions thereof are stored and uploaded in real time, so that the monitoring and dispatching control center can also know the running conditions of a platform area, a user and the like in real time.
3. The voltage and current protection advance notice and the action threshold of the ammeter can be set, and the setting can be set on the ammeter again or can be set remotely.
4. When the collected information values such as voltage and current exceed the forecast or fault threshold, the metering device sends out corresponding forecast signals or tripping actions, and the fault information and fault results are remotely transmitted to the monitoring center, so that the monitoring center can know the occurrence type of the fault in real time, and the protection effects such as low voltage, overvoltage, overcurrent and overload are achieved.
5. The information such as abnormality, power failure and the like generated by the system can be actively reported.
6. And waveform fitting is carried out on the collected voltage and current information, the running waveform and the condition of the power system are restored in real time, help is provided for searching and solving faults, and the running and maintenance of the system are facilitated.
7. In addition to the electrical energy information, real-time operational information and fault information may be displayed.
8. The abnormal information generated in the last ten times can be stored, and the whole operation information of the last week can be stored.
It can be seen from the above that: the electric energy metering method with the functions of monitoring and protecting the electric energy has the advantages that the running condition of the electric power system can be recorded in real time, the potential safety hazard existing in the system can be perceived in advance, and the situation is prevented; when the fault is actually occurring, the information such as fault type, fault reason, fault result and the like can be stored, the real-time running conditions before and after the fault are stored, and the conditions such as power failure, occurring fault and the like are uploaded in real time, so that the power supply reliability and the power supply benefit are improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1. the device comprises a CPU 2, a voltage detection module 3, a current detection module 4, a protection module 5, a tripping module 6, a wave recording module 7, a metering module 8, a display module 9, a carrier module 10 and a storage unit.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1: an electric energy metering method with electric energy monitoring and protecting functions is characterized in that: the system comprises a voltage detection module 2, a current detection module 3, a protection module 4, a tripping module 5, a wave recording module 6, a metering module 7, a display module 8, a carrier module 9, a CPU1 and a storage unit 10, wherein the CPU1 is respectively connected with the voltage detection module 2, the current detection module 3, the protection module 4, the tripping module 5, the wave recording module 6, the metering module 7, the display module 8, the carrier module 9 and the storage unit 10 for control, and the steps are as follows:
firstly, collecting the voltage and the current of the system operation through a voltage and current collecting module, and then respectively sending the voltage and the current into a voltage detecting module 2 and a current detecting module 3; meanwhile, the voltage and current signals are also sent to a metering module 7 for electric energy metering; the voltage and current are also sent to the recording module 6 for recording the voltage and current during operation.
When the voltage detection module 2 or the current detection module 3 detects that the voltage or the current is abnormal or exceeds the range, a signal is sent out, the protection module 3 is enabled to act, the action result of the protection module 3 is determined according to the fault degree, when the fault degree is light and does not influence the normal operation, a system fault is not caused or other equipment is caused to generate faults, a forenotice signal is sent out, the forenotice signal is uploaded to a control center through the carrier module 8, if the fault degree is serious, the trip module 4 is controlled to disconnect a rear circuit, and meanwhile, the collected fault signal is also transmitted to the control center through the carrier module 8.
The control center can carry out corresponding maintenance according to the fault signal, and meanwhile, the control center can rapidly position the station area according to the number of the uploading carrier module 8, so that maintenance personnel can rapidly arrive at the field for maintenance.
The wave recording module 6 monitors the running condition of the system in real time, saves the running real-time condition of the system, fits the saved data into running waveforms, compares the running waveforms with standard running waveforms under normal running condition saved in advance, gives out alarm signals when the difference between the running waveforms obtained by wave recording and the standard waveforms is out of range, and gives out abnormal classification on the difference degree of the waveforms to prompt operators to pay attention to the situation according to the abnormal classification.
The metering module 6 meters the electric energy consumed in real time, and the display module 7 displays the total energy consumption and the real-time voltage and current, and queries the latest ten fault conditions and the latest one-week operation record; the storage unit 10 is used to store various information for on-site inquiry.
The electric energy metering method with the functions of monitoring and protecting the electric energy has the advantages that the running condition of the electric power system can be recorded in real time, the potential safety hazard existing in the system can be perceived in advance, and the situation is prevented; when the fault is actually occurring, the information such as fault type, fault reason, fault result and the like can be stored, the real-time running conditions before and after the fault are stored, and the conditions such as power failure, occurring fault and the like are uploaded in real time, so that the power supply reliability and the power supply benefit are improved.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the invention still fall within the scope of the technical solution of the invention.
Claims (2)
1. An electric energy metering method with electric energy monitoring and protecting functions is characterized in that: the device comprises a voltage detection module, a current detection module, a protection module, a tripping module, a wave recording module, a metering module, a display module, a carrier module, a CPU and a storage unit, wherein the CPU is respectively connected with the voltage detection module, the current detection module, the protection module, the tripping module, the wave recording module, the metering module, the display module, the carrier module and the storage unit for control, and the steps are as follows:
s1, firstly, collecting system voltage and current, respectively sending the system voltage and the current into a voltage detection module and a current detection module, and then sending the voltage and the current into a metering module for electric energy metering; then the voltage and the current are sent into a wave recording module to record the voltage and the current;
s2, when the voltage detection module or the current detection module detects that the voltage or the current is abnormal or out of range, a signal is sent out to enable the protection module to act;
s3, determining an action result according to the action result of the protection module, and sending a forecast signal when the system fault is not caused or other equipment is caused when the fault degree is light and the influence is not large;
s4, uploading the forecast signal to a control center through a carrier module; if the fault degree is serious and exceeds the set action limit, the tripping module is controlled to disconnect the rear circuit, and meanwhile, the collected fault signal is transmitted to the control center through the carrier module;
s5, the wave recording module monitors the running condition of the system in real time and stores the running real-time condition of the system;
s6, the metering module meters the electric energy consumed in real time;
s7, the display module displays the total energy consumption and the real-time voltage and current, and queries the latest ten fault conditions and the latest one-week operation record;
s8, the storage unit is used for storing various information.
2. The method for measuring electric energy with electric energy monitoring and protecting functions according to claim 1, wherein the method comprises the following steps: s6, the wave recording module is used for simulating the stored data into an operation waveform, the operation waveform is compared with a standard operation waveform under a normal operation condition stored in advance, when the difference between the operation waveform obtained by wave recording and the standard waveform is found to be out of range, an alarm signal is sent out, and meanwhile, abnormal classification is given to the difference degree of the waveform, so that operators are prompted to pay attention to the fact that the corresponding processing is performed according to the abnormal classification condition.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3168014U (en) * | 2011-03-09 | 2011-05-26 | 北海道電力株式会社 | Waveform recording apparatus and fault location system |
| CN102654572A (en) * | 2011-03-03 | 2012-09-05 | 河北省电力研究院 | Testing method for delayed output time of signal control terminal of intelligent electric energy meter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8620608B2 (en) * | 2005-01-27 | 2013-12-31 | Electro Industries/Gauge Tech | Intelligent electronic device and method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654572A (en) * | 2011-03-03 | 2012-09-05 | 河北省电力研究院 | Testing method for delayed output time of signal control terminal of intelligent electric energy meter |
| JP3168014U (en) * | 2011-03-09 | 2011-05-26 | 北海道電力株式会社 | Waveform recording apparatus and fault location system |
Non-Patent Citations (1)
| Title |
|---|
| 基于单片机的电流故障录波系统设计与实现;李艳洁;潘国锋;王银玉;;电子测量技术(03);全文 * |
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