CN111487461A - Line loss monitoring system - Google Patents
Line loss monitoring system Download PDFInfo
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- CN111487461A CN111487461A CN202010323600.7A CN202010323600A CN111487461A CN 111487461 A CN111487461 A CN 111487461A CN 202010323600 A CN202010323600 A CN 202010323600A CN 111487461 A CN111487461 A CN 111487461A
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- monitoring system
- line loss
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- measuring instrument
- resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a line loss monitoring system, which belongs to the technical field of line loss monitoring and comprises a monitoring system, wherein the monitoring system comprises a voltage measuring instrument, a resistance measuring instrument and a wireless transmitter, the wireless transmitter comprises a baseband signal processing circuit, an encryption element, a modulator, a high-frequency power amplifier and a transmitting antenna, voltage and resistance data can be transmitted to a server in real time through the wireless transmitter, and a line loss value between each power point is obtained through related calculation so as to achieve remote monitoring. The problem of real-time monitoring of the numerical value of the power loss is solved, and a line loss monitoring system is provided.
Description
Technical Field
The invention relates to a line loss monitoring system, in particular to a line loss monitoring system, and belongs to the technical field of line loss monitoring.
Background
Line loss is mainly caused by three factors in power transmission, wherein the conducting wires of the lines, the transformer and the windings of the motor are all made of copper or aluminum materials. When a current passes through it, it presents a resistance to the current, which is referred to as the resistance of the conductor. Electrical energy in the transmission of power networks, the resistance of the conductors must be overcome, resulting in a loss of electrical energy, which is seen in the heating of the conductors. Since this loss is caused by the resistance of the conductor, it is called resistive loss, which is proportional to the square of the current and expressed by the equation. Losses in the windings of transformers, motors, etc., are also conventionally referred to as copper losses.
And secondly, the transformer has the function of a magnetic field, and the transformer needs to establish and maintain an alternating magnetic field to boost or reduce the voltage. The motor needs to establish and maintain a rotating magnetic field to operate and drive the production machine to do work. The process in which the current establishes a magnetic field in the electrical device, i.e. the electromagnetic transformation process. In this process, hysteresis and eddy currents are generated in the iron core of the electrical device due to the alternating magnetic field, causing the iron core to heat, thereby generating an electrical energy loss. Since such losses are generated during the electromagnetic conversion process, they are referred to as excitation losses, which cause the core to heat, also commonly referred to as core losses.
The method also comprises management reasons, and power consumption of users against regulations and electricity stealing, electric leakage of power grid elements, errors of electric energy metering devices, missing reading of meter reading personnel, wrong reading and the like cause electric energy loss due to the fact that management of power supply and utilization management departments and related personnel is not strict and leaks occur. The loss is not regular and is not easy to measure, so the loss is called as unknown loss. The unknown loss is generated in the business process of the power supply enterprise, so the unknown loss is also called business loss.
Currently, a device capable of accurately monitoring the line loss in real time is lacked.
Disclosure of Invention
The invention mainly aims to provide a line loss monitoring system for monitoring a numerical value of power loss in real time.
The purpose of the invention can be achieved by adopting the following technical scheme:
including monitoring system, monitoring system includes voltage measurement appearance, resistance measurement appearance and wireless transmitter, wireless transmission includes baseband signal processing circuit, encryption element, modulator, high frequency power amplifier and transmitting antenna, can be through wireless transmitter real-time voltage and resistance data transmission to the server to reach remote monitoring through the line loss numerical value that relevant calculation reachs between every power point.
Preferably, the voltage measuring instrument is fixed on the power transmission point, and can accurately measure the real-time voltage value of the point.
Preferably, the resistance measuring instrument is fixed on the power transmission point, and can accurately measure the real-time resistance value of the point.
Preferably, the wireless transmitter is connected with the sim card slot, the power supply wiring and the instrument interface.
Preferably, the encryption element encrypts the data via algorithmic encryption to prevent the data from being read by unauthorized persons.
Preferably, the sim card slot is adapted to receive cards from multiple telecommunications providers.
Preferably, the voltage measuring instrument and the resistance measuring instrument are both provided with wiring ports, and each wiring port comprises a power supply interface and a data interface.
Preferably, the connection ports of the voltage measuring instrument and the resistance measuring instrument are connected with the instrument interface, so that the uniform supply of the power supply is achieved.
Preferably, the power supply wiring is connected within the substation environment by modulation.
Preferably, the monitoring system transmits the data to the server in real time, the user logs in through an account to uniformly manage voltage and resistance data of a plurality of sites, obtains a current power value according to the formula P = I R, and obtains a line loss value between a and B by subtracting the power of the site B from the power of the site a, so as to remotely monitor a change in the line loss value in real time and eliminate a fault and a leakage condition according to the change.
Compared with the prior art, the invention has the beneficial effects that:
1. the method avoids the mode of manually measuring the line loss, and electric energy calculation errors caused by missing reading, error exceeding and the like of meter reading personnel are easy to occur compared with manual work.
2. According to the connection of the infinite transmitter and the server, the voltage measuring instrument and the resistance measuring instrument can transmit data to a computer screen of monitoring personnel in real time, the real-time measurement cannot be inconsistent in the measurement of resistance values caused by seasonal changes, and the line loss value can be monitored to the maximum extent.
Drawings
FIG. 1 is a monitoring system diagram of a preferred embodiment of a line loss monitoring system according to the present invention;
fig. 2 is a schematic diagram of an infinite transmitter of a preferred embodiment of a line loss monitoring system according to the present invention;
FIG. 3 is a flow chart of data acquisition for a preferred embodiment of a line loss monitoring system according to the present invention;
FIG. 4 is an overall operational flow diagram of a preferred embodiment of a line loss monitoring system according to the present invention;
FIG. 5 is a manual measurement profile diagram of a preferred embodiment of a line loss monitoring system according to the present invention;
fig. 6 is an automatic measurement characteristic diagram of a preferred embodiment of the line loss monitoring system according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1 to fig. 6, the line loss monitoring system provided in this embodiment includes a monitoring system, where the monitoring system includes a voltage measuring instrument, a resistance measuring instrument, and a wireless transmitter, where the wireless transmitter includes a baseband signal processing circuit, an encryption element, a modulator, a high-frequency power amplifier, and a transmitting antenna, and voltage and resistance data can be transmitted to a server in real time through the wireless transmitter, and a line loss value between each power point is obtained through correlation calculation, so as to achieve remote monitoring.
The voltage measuring instrument is fixed on the power transmission point, and can accurately measure the real-time voltage value of the point. The resistance measuring instrument is fixed on the power transmission point, and can accurately measure the real-time resistance value of the point.
And the wireless transmitter is connected with the sim card slot, the power supply wiring and the instrument interface. The encryption element encrypts data through algorithm encryption, and the data are prevented from being received and read by other persons without permission. The sim card slot is adapted to receive cards from multiple telecommunications providers. The voltage measuring instrument and the resistance measuring instrument are both provided with wiring ports, and each wiring port comprises a power supply interface and a data interface. And the connection ports on the voltage measuring instrument and the resistance measuring instrument are connected with instrument interfaces to achieve the uniform supply of power supplies. The power supply wiring is connected in the periphery of the transformer substation through modulation.
The monitoring system transmits data to the server in real time, a user logs in through an account to uniformly manage voltage and resistance data of a plurality of stations, a current power value is obtained according to a formula P = I R, and a line loss value between A and B can be obtained according to the power of the station A minus the power of the station B, so that the change of the line loss value can be remotely monitored in real time, and the fault and electric leakage conditions can be eliminated according to the change.
In this embodiment, as shown in fig. 1 to fig. 6, the principle of the line loss monitoring system provided in this embodiment is as follows:
according to the measurement data of the voltage measuring instrument and the resistance measuring instrument, the current electric power is calculated through P = I R, the electric powers of a plurality of continuous monitoring points are obtained through a plurality of monitoring systems, the line loss value between A and B can be obtained by subtracting the power of the station B from the power of the station A, the line loss values between other stations can be analogized, the line loss values between different places are displayed in real time in front of a screen of an administrator, and a remote efficient effect can be achieved based on the line loss values when leakage is detected.
In summary, in this embodiment, the line loss monitoring system according to this embodiment is provided.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (10)
1. A line loss monitoring system comprises a monitoring system and is characterized in that the monitoring system comprises a voltage measuring instrument, a resistance measuring instrument and a wireless transmitter, the wireless transmitter comprises a baseband signal processing circuit, an encryption element, a modulator, a high-frequency power amplifier and a transmitting antenna, voltage and resistance data can be transmitted to a server in real time through the wireless transmitter, and a line loss value between each power point is obtained through correlation calculation so as to achieve remote monitoring.
2. The line loss monitoring system of claim 1, wherein the voltage measuring device is fixed to the power transmission point, and can accurately measure the real-time voltage value at the point.
3. The line loss monitoring system of claim 1, wherein the resistance measuring device is fixed to the power transmission point, and can accurately measure the real-time resistance value of the power transmission point.
4. The line loss monitoring system of claim 1, wherein the wireless transmitter is coupled to the sim card slot, the power connection, and the instrument interface.
5. A line loss monitoring system as claimed in claim 1, wherein said encryption component encrypts the data via algorithmic encryption to prevent reading by unauthorized persons.
6. The line loss monitoring system of claim 1, wherein the sim card slot is adapted to receive cards from multiple telecommunications providers.
7. The line loss monitoring system of claim 1, wherein said voltage measuring instrument and said resistance measuring instrument are each provided with a connection port, and said connection ports comprise a power interface and a data interface.
8. The line loss monitoring system of claim 1, wherein the connection ports of the voltage measuring instrument and the resistance measuring instrument are connected to the instrument interface to provide a uniform supply of power.
9. A line loss monitoring system according to claim 1, wherein the power supply wiring is connected within the substation environment by modulation.
10. The line loss monitoring system according to claim 1, wherein the monitoring system transmits the data to the server through real-time transmission of the data, the user logs in through an account to uniformly manage voltage and resistance data of a plurality of stations, a current power value is obtained according to formula P = I R, and a line loss value between a and B is obtained by subtracting a power of station B from a power of station a, so that a change in the line loss value can be remotely monitored in real time, and a fault and leakage condition can be eliminated according to the change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323600.7A CN111487461A (en) | 2020-04-22 | 2020-04-22 | Line loss monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323600.7A CN111487461A (en) | 2020-04-22 | 2020-04-22 | Line loss monitoring system |
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| CN111487461A true CN111487461A (en) | 2020-08-04 |
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| CN202010323600.7A Pending CN111487461A (en) | 2020-04-22 | 2020-04-22 | Line loss monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239480A (en) * | 2020-02-11 | 2020-06-05 | 国网江西省电力有限公司电力科学研究院 | Dyn11 low-voltage distribution network theoretical line loss calculation method and system |
| CN112269103A (en) * | 2020-10-15 | 2021-01-26 | 国网冀北电力有限公司计量中心 | Line loss monitoring platform and method based on intelligent regulation and control system |
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