CN113364125A - Management line loss detection system based on voltage adjustment identification - Google Patents
Management line loss detection system based on voltage adjustment identification Download PDFInfo
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- CN113364125A CN113364125A CN202110677501.3A CN202110677501A CN113364125A CN 113364125 A CN113364125 A CN 113364125A CN 202110677501 A CN202110677501 A CN 202110677501A CN 113364125 A CN113364125 A CN 113364125A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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Abstract
The invention relates to the field of electric power, in particular to a management line loss detection system based on voltage adjustment and identification. The terminal electric energy meter is provided with an identification identifier. The signal identifier loads a unique identifier for a power supply signal of the power supply equipment by adjusting output voltage, the identifier detects the unique identifier of the power supply signal received by the identifier, the unique identifier is matched with the terminal electric energy meter, and then the meter reading subsystem collects data of the outlet electric energy meter and the terminal electric energy meter with the same unique identifier and calculates the line loss. The problem of under different operating modes because the power of user comes from different transformers, the circuit that the power flowed to is different, the calculated value of the circuit loss that produces is inaccurate is solved.
Description
Technical Field
The invention relates to the field of electric power, in particular to the field of line loss detection, and specifically relates to a management line loss detection system based on voltage adjustment and identification.
Background
It is common in the art to manage line loss in a manner that represents the actual loss of the line. Namely, the outlet end of the power supply is provided with a general table, the user terminal is provided with a terminal table, and the sum of the data of the general table minus the data of all the terminal tables is the line loss, which is also called the management line loss. The managed line loss and the calculated line loss have a certain difference.
However, in practical applications, for example, a large-scale community is generally provided with a power supply with a plurality of loops, that is, a power supply is introduced from different power distribution stations and then supplied to users through transformers, and because the reliability of power supply for the users is ensured, each residential building may be supplied with power by two transformers, and therefore, power supplies for users to use power in different operation modes come from different transformers, and therefore, circuits in which the power supply flows to are different, at this time, an error occurs in calculation according to the existing line loss management mode, and the problem of line loss reaction cannot be found in time. Therefore, the power supply path is determined, and the line loss of the user terminal powered by the power supply can be accurately calculated from which power supply. Therefore, it is an urgent requirement to design a new line loss detection system based on the managed line loss.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a management line loss detecting system based on voltage adjustment discernment with accurate judgement power source, accurate calculation line loss.
The technical scheme of the technical problem to be solved by the invention is as follows: management line loss detecting system based on voltage adjustment discernment, including power supply unit, power supply network and terminal electric energy meter and power dispatching system, power supply unit's output and power supply network electrical connection, the input and the power supply network electrical connection of terminal electric energy meter, the output and the user load electrical connection of terminal electric energy meter, power dispatching system is equipped with the subsystem of checking meter, its characterized in that: a signal identifier is arranged on a connecting line between the power supply equipment and a power supply network, or the power supply equipment is provided with the signal identifier; an outlet electric energy meter is arranged between the output end of the power supply equipment and a power supply network; the signal identifier comprises a signal triggering module and an adjustment execution module; the adjustment execution module of the signal identifier comprises two capacitors; the method for loading the unique identifier on the power signal output by the power supply equipment comprises the following steps:
the capacitors are sequentially switched on, and the voltage on a line output by the power supply equipment is increased in two stages; then the capacitors are cut off in sequence, and the voltage on the line output by the power supply equipment is reduced and recovered to be normal; the unique identification is a power supply voltage rising in two stages or a normal process is recovered after the two-stage rising; the terminal electric energy meter is provided with an identification identifier, and the identification identifier comprises a signal detection module and a data forwarding module; the method for detecting the line loss based on the management line loss comprises the following steps:
the signal identifier loads a unique identifier for a power supply signal output by the power supply equipment, and the unique identifier is matched with the outlet electric energy meter; the identification identifier detects a unique identification of the power supply signal received by the identification identifier, and the unique identification is matched with the terminal electric energy meter; the meter reading subsystem collects the data of the outlet electric energy meter and the terminal electric energy meter with the same unique identification, and then calculates the line loss in a line loss management mode, namely the line loss is as follows: and subtracting the sum of the data of all the terminal electric energy meters with the same unique identification from the value of the outlet electric energy meter.
Preferably, the signal triggering module sends an instruction to the adjustment execution module, and the adjustment execution module loads a unique identifier to the power signal output by the power supply device after receiving the instruction; the signal triggering module carries out signal triggering in a mode that: the signal triggering module is provided with a timer circuit or a timer module, and the timer circuit or the timer module sends instructions to the adjustment execution module at the same time interval; and the signal trigger module is provided with a network communication module and sends an instruction to the adjustment execution module after receiving an external control instruction.
Preferably, the signal detection module of the identifier is a voltage detection module, and the data forwarding module of the identifier is a microcontroller; the voltage detection module collects voltage, judges the regularity of voltage change through the voltage collected in real time, and identifies the unique identifier if the change rule is the same as that of the unique identifier.
Preferably, the signal detection module of the identifier is a voltage detection module, and the data forwarding module of the identifier is a microcontroller; the voltage detection module collects voltage, judges whether incomplete cycles exist in the voltage waveform or not through the voltage collected in real time, and determines the unique identifier by recording the number of the incomplete cycles or the number of times of interruption in one cycle if the incomplete cycles exist.
Preferably, the data forwarding module pairs the detected unique identifier with the meter number of the electric energy meter and uploads the paired unique identifier to the meter reading subsystem of the scheduling system.
Preferably, the data forwarding module sends the unique identifier to the terminal electric energy meter, and the terminal electric energy meter loads the unique identifier when uploading the electric energy parameters.
The invention has the beneficial effects that:
1. the source of the user power supply can be accurately determined, and the line loss can be calculated according to the power supply source.
2. Accurate power source determination can determine accurate line loss data, and the accuracy of fault judgment according to the line loss data can be improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention
FIG. 2 is a schematic diagram of a signal identifier according to an embodiment of the present invention
FIG. 3 is a schematic diagram of a signal identifier according to an embodiment of the present invention
FIG. 4 is a schematic diagram of a signal identifier according to an embodiment of the present invention
FIG. 5 is a schematic diagram of a signal identifier according to an embodiment of the present invention
FIG. 6 is a schematic diagram of a terminal electric energy meter according to an embodiment of the present invention
FIG. 7 is a diagram of unique identifiers according to an embodiment of the present invention
FIG. 8 is a diagram of unique identifiers in accordance with an embodiment of the present invention
FIG. 9 is a diagram of unique identifiers according to an embodiment of the present invention
FIG. 10 is a schematic diagram of unique identifiers according to an embodiment of the present invention
FIG. 11 is a schematic diagram of a power supply network used in the example of calculating line loss in the present application
In the figure:
C. a capacitor; s10, a switch tube; s12, a second section switch; s11, a first section switch; 520. a data forwarding module; 510. a signal detection module; 420. an adjustment execution module; 410. a signal triggering module; 600. an outlet electric energy meter; 500. an identifier recognizer; 300. a terminal electric energy meter; 400. a signal identifier; 200. a power supply network; 100. a power supply device; 999. marking;
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
As shown in fig. 1, in the prior art, a power supply and distribution system mainly includes a power supply device 100, a power supply network 200, a terminal electric energy meter 300, and a power dispatching system. The output of the power supply device 100 is electrically connected to the power supply network 200, and the power supply device 100 may be a transformer of a substation, a feed-out loop of a distribution substation, or a transformer area. The input end of the terminal electric energy meter 300 is electrically connected with the power supply network 200, the output end of the terminal electric energy meter 300 is electrically connected with a user load, and the power dispatching system is provided with a meter reading subsystem. The power supply network 200 is a complex power supply circuit system, and further, the circuit connections within the same power supply network 200 are different in different operation modes. Therefore, the power supply device 100 from which the terminal power meter 300 obtains power is uncertain, and in order to determine from which power supply device 100 the power for the user load comes, the signal identifier 400 is provided on the connection line between the power supply device 100 and the power supply network 200, or the power supply device 100 is provided with the signal identifier 400.
An outlet electric energy meter 600 is arranged between the output end of the power supply device 100 and the power supply network 200 and used for calculating the sum of the electric energy output by the power supply device 100.
After the power supply device 100 loads a specific signal through the signal identifier 400, the power supply device has uniqueness. In order to identify the power supply device 100, the terminal electric energy meter 300 is provided with an identification identifier 500. The tag identifier 500 is used to detect the signal and determine the source of the power.
The method for detecting the line loss in the system comprises the following steps:
the signal identifier 400 loads each power signal output by the power supply device 100 with a unique identifier and pairs or associates the unique identifier with the outlet power meter 600 that is matched with the power supply device 100.
The identification identifier 500 detects the unique identification of the power signal it receives and pairs or associates the unique identification with the terminal power meter 300.
The meter reading subsystem converts the outlet electric energy meter 600 and the terminal electric energy meter 300 with the same unique identification into an area and performs statistical calculation. The difference value between the electricity degree of the outlet electric energy meter 600 acquired by the meter reading subsystem and the sum of the electricity degrees of the terminal electric energy meters 300 in the same region is the line loss of the distribution line where the transformer in the transformer area is located.
In order to reduce the influence of the signal generated by the unique identifier on the power supply system, an intermittent loading mode is adopted. Therefore, the signal identifier 400 is provided with a signal triggering module 410 and an adjustment executing module 420, and the signal triggering module 410 and the adjustment executing module 420 are electrically connected. The signal triggering module 410 is used to set a triggered node and a triggering mode, when a signal with a unique identifier needs to be loaded, the signal triggering module 410 sends an instruction to the adjustment execution module 420, and the adjustment execution module 420 loads the signal after receiving the instruction.
In the prior art, a microcomputer control system can be realized by using a single chip as a microprocessor chip, and the microcomputer control system controls a pin of the microcomputer control system to be short or an IO interface to output a control signal by setting a program.
Further, the manner of triggering the signal by the signal triggering module includes: a periodic cycle trigger and an external start trigger.
Triggering in a periodic cycle: the signal triggering module 410 is provided with a timer circuit or a timer module, wherein the timer module can be a timer program set in a microcontroller inside the signal identifier 400. The timer circuit or timer module sends instructions to the adjustment execution module 420 at the same time interval. Such as once a day, once a 12 hour trigger, once a week, etc. This way, it is possible to periodically check the association of the power supply device 100 with the terminal power meter 300.
And the signal trigger module is provided with a network communication module and sends an instruction to the adjustment execution module 420 after receiving an external control instruction. The signal identifier 400 is connected with the power dispatching system through a wired network or a wireless network, when the power dispatching system detects a system fault, such as a quick-break protection action, a ground fault action and the like, and the system fault may cause a change of a structure of a power supply network, such as a looped network power supply line, both ends of the power dispatching system are provided with power supplies, one end of the power dispatching system is tripped, the other end of the power dispatching system may be subjected to a backup power automatic switching protection action, electric energy loaded on the power dispatching system after the backup power automatic switching protection action is changed from the power supply device 100 from one end to the power supply device 100 from the other end, and at this time, the power dispatching system sends an instruction to the signal identifier 400 to instruct the signal identifier to trigger and load a signal with a unique identifier. Alternatively, the power dispatching personnel sends the triggering instruction to the signal identifier 400 in a remote control mode after changing the operation mode of the power supply network 200.
Meanwhile, the identifier 500 is provided with a signal detection module and a data forwarding module. The signal detection module 510 is electrically connected to the data forwarding module 520, after the signal detection module 510 detects the unique identifier, the detection result is sent to the data forwarding module 520, and the data forwarding module 520 sends the unique identifier to a specific target in a specific manner according to a set forwarding program. The signal detection module 510 detects the change of the data in real time, and the data forwarding module 520 may send the unique identifier in a cycle or after detecting the change of the unique identifier, so as to reduce the power consumption and the bandwidth utilization of the communication network.
The adjustment execution module 420 includes a capacitor and a control switch. The capacitor and the control switch are connected in series and then connected in parallel to a line of the output of the power supply apparatus 100.
As shown in fig. 1, two ends of the capacitor C and two loops of the control switch are connected in series and then are respectively connected to the zero line and the live line of the single-line power supply loop.
In addition to unidirectional power supply networks, three-phase four-wire power supply networks are more common. Based on this, as shown in fig. 3, the capacitor C is connected in series with the control switch after being connected in star, and then is connected to the ABC three-phase conductors of the three-phase alternating current.
Because certain current can be cut off in the capacitor switching process, the control switch adopts a controllable load switch or a circuit breaker, such as a molded case circuit breaker and the like.
At this time, the method of loading the unique identifier to the power supply device 100 is as follows:
the signal triggering module 410 sends a control signal to the adjustment executing module 420, and specifically sends a closing control signal to the control switch;
after the control switch receives the closing control signal, the main loop of the control switch is closed, and the capacitor C is connected into a power supply network of the power supply device 100;
due to the capacitive characteristics of the capacitor C, the voltage on the line output by the power supply apparatus 100 will rise at this time.
After the interval time t, the signal triggering module 410 sends a switching-off control signal to the control switch, at this time, the control switch is turned off, the capacitor C is cut off, and at this time, the voltage on the line output by the power supply device 100 is reduced and returns to normal.
Based on the above control manner, the unique identifier is a process of increasing and decreasing the power supply voltage, different power supply devices 100 are configured with different capacitors C, and the voltage increase and decrease amplitude of the power supply devices 100 is controlled by setting the size of the capacitor C, so that each power supply device 100 has the unique identifier. Alternatively, the interval t of the voltage rise and the amplitude of the voltage rise are matched to be used as the unique identifier. Specifically, the method comprises the following steps:
the unique identification of the # 1 power device is δ U1, and the unique identification of the # 2 power device is δ U2, where δ U1 ≠ δ U2. Or, the voltage amplitude of the 1# power supply device and the 2# power supply device are changed to be delta U, the unique identifier of the 1# power supply device is delta U, the duration of the delta U is T1, and the duration of the 2# power supply device is T2.
As shown in fig. 6, in the case of normal power supply, the amplitude of the voltage fluctuates within a certain range, and when no abnormal condition, such as a short-circuit fault, occurs, the range of voltage variation is very small. Therefore, the voltage amplitude of the delta U is designed to be larger than the amplitude of normal fluctuation, and the value can be obtained through statistics and experiments.
In the existing point protection system, the voltage is detected very mature, and when the value of the voltage is continuously larger than or equal to delta U, the unique identifier is judged to be generated.
Further, in order to facilitate generating an accurate unique identifier, the signal identifier 400 further includes a voltage measuring module, which is connected in parallel with the line output by the power supply device 100 to detect the voltage.
After the control switch is closed, the capacitor is switched on, and at this time, the voltage on the line output by the power supply device 100 is increased; the voltage measuring module detects the voltage change, when the voltage rises by δ U, the control switch is turned off, the capacitor is cut off, and at this time, the voltage on the line output by the power supply device 100 is reduced and returns to normal. Since the transient change in the capacitance input process is the change form of an exponential curve, but the transient process is short, the method generates a voltage pulse, and the voltage pulse serves as a unique identifier.
At this time, different power supply apparatuses 100 are uniquely identified by the number of pulses, or the number of times δ U is raised and returned to normal.
Preferably, in order to make the unique identifier more recognizable, two capacitors C are connected in parallel at the output terminal of the power supply apparatus 100 as shown in fig. 2.
At this time, the method for loading the unique identifier on the power signal output by the power supply device 100 includes:
the throw capacitors are turned on in sequence, as shown in fig. 8, at which time the voltage on the line output by the power supply apparatus 100 rises in two stages.
The capacitors are then sequentially switched off, at which point the voltage on the line output by the power supply apparatus 100 will drop and return to normal.
The unique identification is a process that the power supply voltage rises in two stages or returns to normal after rising in two stages, and in the process, the unique identification is set by setting different amplitudes delta U of the voltage rise or different durations of the two voltage rises.
II
The adjusting and executing module 420 comprises a switch tube and a breaking switch. As shown in fig. 4, the section switch is provided with two first section switches S11 and a second section switch S12. The second section switch S12 and the switch tube S10 are connected in series and then connected in parallel with the first section switch S11. The adjustment execution module 420 is connected in series to the line of the output of the power supply apparatus 100.
In the initial state, the first section switch S11 is turned on, and the second section switch S12 is turned off. This state is a normal power supply state. When the unique identifier needs to be loaded, the method for loading the unique identifier on the power signal output by the power supply device 100 includes:
the second section switch S12 is closed, followed by opening the first section switch S11. The circuit of the second section switch S12 is switched to supply power. At this time, the control switch S10 is momentarily turned off and turned back on. The switching tube S10 is turned off for a period δ t. As shown in fig. 9, the waveform of the voltage generates a cycle wave having a discontinuity.
The unique identifier is that an incomplete cycle exists in the power signal, namely the cycle with malformation. Different power supply devices 100 are provided with unique identifications by setting different deltat;
alternatively, different power supply devices 100 may have unique identifiers by setting the number of times of disconnection within a cycle or setting the number of incomplete cycles.
Based on the above two methods, the unique identifier is loaded in a voltage manner, so that the identifier 500 needs to detect the unique identifier by detecting the voltage. Accordingly, the signal detection module 510 of the identifier 500 is a voltage detection module, and the data forwarding module 520 of the identifier 500 is a microcontroller.
The voltage detection module collects voltage, the voltage collection module is widely applied to a microcomputer relay protection device and is mature in technology, and voltage collection and digitization are achieved for a power supply line with a high voltage level by arranging a voltage transformer to be matched with a voltage collection circuit.
In the embodiment, the regularity of the voltage change is judged through the voltage collected in real time, and if the change rule is the same as that of the unique identifier, the unique identifier is identified. The real-time curve of the voltage can be drawn by collecting the instantaneous value of the voltage, the malformed waves can be detected at the same time, and then whether the voltage is the unique identifier or not can be confirmed by matching. Or the collected voltage is converted into an effective value, the amplitude of the voltage change is determined through the change of the effective value, and then the unique identifier is determined.
And judging whether the voltage waveform has incomplete cycles or not through the voltage acquired in real time, and recording the number of the incomplete cycles or the number of interruptions in one cycle to determine the unique identifier if the incomplete cycles exist.
Preferably, in order to realize matching between the load and the power supply device, the detected unique identifier needs to be uploaded to a meter reading system and compared with the unique identifiers of the power supply devices stored in the system. The data can be uploaded in a centralized mode.
Firstly, the data forwarding module 520 pairs the detected unique identifier with the meter number of the electric energy meter and uploads the paired unique identifier to a meter reading subsystem of the dispatching system.
Secondly, the data forwarding module 520 sends the unique identifier to the terminal electric energy meter 300, and the terminal electric energy meter loads the unique identifier when uploading the electric energy parameters.
The application also discloses electric energy meter with discernment power signal source sets up sign identifier 500 on the basis of current intelligent electric energy meter, sign identifier 500 includes signal detection module 510 and data forwarding module 520. The signal detection module 510 detects the unique identifier of the power supply, and then uploads the unique identifier of the power supply device, the serial number of the terminal electric energy meter and the numerical value of the electric energy meter to the meter reading system.
Example of calculation of line loss:
as shown in fig. 11, the power supply network 200 is a dual power supply line for power device a and power device x, and a plurality of circuit breakers are arranged on the power supply line, and are used for dividing the power supply line into a plurality of sections, and each section has a respective load user. The power supply mode is adopted for ensuring the power supply reliability. The power supply line has a plurality of operation modes, and assuming that the power supply device a supplies power to the whole line, the loads 300b to 300n are all supplied with power by the power supply device a. At this time, the lines are closed from F1 to F4 except for the circuit breaker F5. The unique identifier detected by the terminal power meters 300b to 300n at this time is the unique identifier of the power supply device a. Time to calculate loss: ws ═ W100a-(W300b+W300c+……+W300n)。
In case of a line fault or repair between circuit breakers F2 and F3, the line section needs to be cut off, at which time the F1, F4 and F5 circuit breakers are closed and the F2 and F3 circuit breakers are opened. At this time, the power supply device a supplies power to the terminal power meters 300i to 300n, and the power supply device x supplies power to the terminal power meters 300b to 300 h. If again according to Ws ═ W100a-(W300b+W300c+……+W300n) The error of the line loss becomes large by calculation. The calculation method of the line loss at this time is as follows:
Ws1＝W100a-(W300i+W300j+……+W300n)
Ws2＝W100x-(W300b+W300c+……+W300h)
the calculation formula is more suitable for actual power supply lines, so that the calculated line loss is more accurate.
According to the description of the example, the technical scheme disclosed by the invention has the function of judging the source of the user power supply, so that the operation mode of the power supply line can be determined according to the source of the user power supply, and then the accurate line loss value can be calculated according to the operation mode of the power supply line. The line loss value can judge the running condition of the line, judge whether the potential grounding hazard is generated and judge whether electricity stealing is carried out at the same time, so that the calculation of the accurate line loss value has great significance and effect.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (6)
1. Management line loss detecting system based on voltage adjustment discernment, including power supply unit (100), power supply network (200) and terminal electric energy meter (300) and power dispatching system, the output and the power supply network (200) electrical connection of power supply unit (100), the input and the power supply network (200) electrical connection of terminal electric energy meter (300), the output and the user load electrical connection of terminal electric energy meter (300), power dispatching system is equipped with the sub-system of checking meter, its characterized in that:
a signal identifier (400) is arranged on a connecting line of the power supply equipment (100) and the power supply network (200), or the power supply equipment (100) is provided with the signal identifier (400);
an outlet electric energy meter (600) is arranged between the output end of the power supply equipment (100) and the power supply network (200);
the signal identifier (400) comprises a signal triggering module (410) and an adjustment execution module (420); the adjustment execution module (420) of the signal identifier (400) comprises two capacitors;
the method for loading the unique identifier on the power supply signal output by the power supply equipment (100) comprises the following steps:
the capacitors are sequentially switched on, and the voltage on a line output by the power supply device (100) is increased in two stages;
then the capacitors are cut off in sequence, and the voltage on the line output by the power supply equipment (100) is reduced and recovered to be normal;
the unique identification is a power supply voltage rising in two stages or a normal process is recovered after the two-stage rising;
the terminal electric energy meter (300) is provided with an identification identifier (500),
the identification recognizer (500) comprises a signal detection module and a data forwarding module;
the method for detecting the line loss based on the management line loss comprises the following steps:
the signal identifier (400) loads a unique identifier for the power supply signal output by the power supply device (100) and matches the unique identifier with the outlet electric energy meter (600);
the identification identifier (500) detects the unique identification of the power supply signal received by the identification identifier and matches the unique identification with the terminal electric energy meter (300);
the meter reading subsystem collects data of the outlet electric energy meter (600) and the terminal electric energy meter (300) with the same unique identification, and then calculates line loss in a line loss management mode, namely the line loss is as follows: the value of the outlet power meter (600) is subtracted by the sum of the data of all the terminal power meters (300) with the same unique identification.
2. The system of claim 1, wherein the system is configured to detect a loss of a management line based on voltage adjustment identification:
the signal triggering module (410) sends an instruction to the adjustment execution module (420), and the adjustment execution module (420) loads a unique identifier for a power supply signal output by the power supply device (100) after receiving the instruction;
the signal triggering module carries out signal triggering in a mode that:
the signal triggering module is provided with a timer circuit or a timer module, and the timer circuit or the timer module sends instructions to the adjustment execution module (420) at the same time interval;
and the signal trigger module is provided with a network communication module and sends an instruction to the adjustment execution module (420) after receiving an external control instruction.
3. The system of claim 1, wherein the system is configured to detect a loss of a management line based on voltage adjustment identification:
the signal detection module (510) of the identifier (500) is a voltage detection module, and the data forwarding module (520) of the identifier (500) is a microcontroller;
the voltage detection module collects the voltage of the battery,
and judging the regularity of voltage change through the voltage acquired in real time, and identifying the unique identifier if the change rule is the same as that of the unique identifier.
4. The system of claim 1, wherein the system is configured to detect a loss of a management line based on voltage adjustment identification:
the signal detection module (510) of the identifier (500) is a voltage detection module, and the data forwarding module (520) of the identifier (500) is a microcontroller;
the voltage detection module collects the voltage of the battery,
and judging whether the voltage waveform has incomplete cycles or not through the voltage acquired in real time, and recording the number of the incomplete cycles or the number of interruptions in one cycle to determine the unique identifier if the incomplete cycles exist.
5. The system of claim 3 or 4, wherein the system is configured to detect a loss of a management line based on voltage adjustment identification:
and the data forwarding module (520) pairs the detected unique identifier with the meter number of the electric energy meter and uploads the paired unique identifier to a meter reading subsystem of the dispatching system.
6. The system of claim 3 or 4, wherein the system is configured to detect a loss of a management line based on voltage adjustment identification:
the data forwarding module (520) sends the unique identifier to the terminal electric energy meter (300), and the terminal electric energy meter loads the unique identifier when uploading the electric energy parameters.
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| CN202110677501.3A CN113364125B (en) | 2020-07-01 | 2020-07-01 | Management line loss detection system based on voltage adjustment identification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623177.2A CN111786461B (en) | 2020-07-01 | 2020-07-01 | Line loss detection system based on management line loss |
| CN202110677501.3A CN113364125B (en) | 2020-07-01 | 2020-07-01 | Management line loss detection system based on voltage adjustment identification |
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| CN202010623177.2A Division CN111786461B (en) | 2020-07-01 | 2020-07-01 | Line loss detection system based on management line loss |
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| CN202110676142.XA Active CN113608040B (en) | 2020-07-01 | 2020-07-01 | Line loss detection system based on instantaneous voltage identification |
| CN202110677501.3A Active CN113364125B (en) | 2020-07-01 | 2020-07-01 | Management line loss detection system based on voltage adjustment identification |
| CN202010623177.2A Active CN111786461B (en) | 2020-07-01 | 2020-07-01 | Line loss detection system based on management line loss |
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| CN114779018A (en) * | 2022-05-18 | 2022-07-22 | 安徽因赛特新能源科技有限公司 | Detection system and method based on circuit loss calculation |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796147A (en) * | 1986-10-15 | 1989-01-03 | Anderson Benjamin C | Method for detecting voltage losses in a low voltage distribution system |
| CN1383108A (en) * | 2002-02-04 | 2002-12-04 | 莒县电业局 | Real-time monitor and analysis system for power supply network |
| CN105790794A (en) * | 2016-05-04 | 2016-07-20 | 国网浙江省电力公司杭州供电公司 | Transformer area line online identification system |
| CN209150714U (en) * | 2018-10-31 | 2019-07-23 | 国网新疆电力有限公司阿克苏供电公司 | One or two fusion intelligent breakers based on full electronic mutual inductor |
| CN110752666A (en) * | 2019-09-05 | 2020-02-04 | 浙江华云信息科技有限公司 | Transformer area household transformer identification system |
| CN110769073A (en) * | 2019-10-31 | 2020-02-07 | 海南电网有限责任公司 | Electric energy meter zone attribution identification method and device, computer equipment and storage medium |
| CN110907719A (en) * | 2019-11-05 | 2020-03-24 | 深圳供电局有限公司 | Low-voltage line subsection line loss real-time monitoring device and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1071186A1 (en) * | 1999-07-14 | 2001-01-24 | BCN Data Systems Inc. | Detecting and mapping power line loss in a power network |
| CN101752906B (en) * | 2009-12-17 | 2012-02-01 | 宁波兴邦电器有限公司 | High-voltage switch intelligent control system and control method thereof |
| CN202309087U (en) * | 2011-11-02 | 2012-07-04 | 福建阳谷智能技术有限公司 | Single-phase voltage adjusting device with core controller and combination switch |
| US9799083B2 (en) * | 2014-10-28 | 2017-10-24 | Oracle International Corporation | Correlating consumption and voltage data to identify line loss in an electric grid |
| CN106443168A (en) * | 2016-09-27 | 2017-02-22 | 国网山东省电力公司济南供电公司 | Remote acquisition meter reading data analysis system |
| CN108037360B (en) * | 2017-11-10 | 2020-09-18 | 深圳供电局有限公司 | Safe and stable strong-interference-resistance transformer area identification device |
| CN109286188B (en) * | 2018-10-19 | 2022-03-11 | 东南大学 | 10kV power distribution network theoretical line loss calculation method based on multi-source data set |
| CN109633327B (en) * | 2018-12-25 | 2021-09-21 | 国网湖南省电力有限公司 | Intelligent line loss analysis device for transformer area |
| CN109633328A (en) * | 2018-12-25 | 2019-04-16 | 国网湖南省电力有限公司 | A kind of fixed line loss monitoring and analyzing system |
| CN111352028A (en) * | 2020-04-14 | 2020-06-30 | 山东德源电力科技股份有限公司 | Molded case circuit breaker and line loss analysis method |
-
2020
- 2020-07-01 CN CN202110676142.XA patent/CN113608040B/en active Active
- 2020-07-01 CN CN202110677501.3A patent/CN113364125B/en active Active
- 2020-07-01 CN CN202010623177.2A patent/CN111786461B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796147A (en) * | 1986-10-15 | 1989-01-03 | Anderson Benjamin C | Method for detecting voltage losses in a low voltage distribution system |
| CN1383108A (en) * | 2002-02-04 | 2002-12-04 | 莒县电业局 | Real-time monitor and analysis system for power supply network |
| CN105790794A (en) * | 2016-05-04 | 2016-07-20 | 国网浙江省电力公司杭州供电公司 | Transformer area line online identification system |
| CN209150714U (en) * | 2018-10-31 | 2019-07-23 | 国网新疆电力有限公司阿克苏供电公司 | One or two fusion intelligent breakers based on full electronic mutual inductor |
| CN110752666A (en) * | 2019-09-05 | 2020-02-04 | 浙江华云信息科技有限公司 | Transformer area household transformer identification system |
| CN110769073A (en) * | 2019-10-31 | 2020-02-07 | 海南电网有限责任公司 | Electric energy meter zone attribution identification method and device, computer equipment and storage medium |
| CN110907719A (en) * | 2019-11-05 | 2020-03-24 | 深圳供电局有限公司 | Low-voltage line subsection line loss real-time monitoring device and method |
Non-Patent Citations (2)
| Title |
|---|
| SALMAN MOHAGHEGHI: "Optimal Wide Area Controller and State Predictor for a Power System", 《IEEE TRANSACTIONS ON POWER SYSTEMS》 * |
| 袁笑鹏: "电力线远程自动抄表系统的研制", 《中国优秀硕士论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779018A (en) * | 2022-05-18 | 2022-07-22 | 安徽因赛特新能源科技有限公司 | Detection system and method based on circuit loss calculation |
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| CN111786461B (en) | 2021-06-08 |
| CN113364125B (en) | 2022-06-17 |
| CN113608040B (en) | 2024-01-19 |
| CN113608040A (en) | 2021-11-05 |
| CN111786461A (en) | 2020-10-16 |
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