CN112986752A - Intelligent power grid power line safety real-time online monitoring cloud platform based on wireless sensor network technology - Google Patents
Intelligent power grid power line safety real-time online monitoring cloud platform based on wireless sensor network technology Download PDFInfo
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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
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
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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
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Abstract
The invention discloses a smart grid power line safety real-time online monitoring cloud platform based on a wireless sensor network technology, which is characterized in that power lines in a power distribution network are divided, branch initial end voltage and terminal end voltage of each power line in the power distribution network are detected, voltage difference values of each power line in the power distribution network are calculated, whether the voltage of each power line is abnormal or not is analyzed, the number of each power line with abnormal voltage is counted, current of each section of line region on each power line in the power distribution network is obtained at the same time, current of each section of line region on each power line with abnormal voltage is extracted, current difference values of each section of line region on each power line with abnormal voltage are calculated, the line abnormal type of each power line with abnormal voltage is analyzed, the line region numbers of each power line with abnormal voltage and each power line with abnormal line are counted, and corresponding early warning reminding is carried out, and related personnel carry out corresponding treatment measures, so that the troubleshooting efficiency of the power distribution network is improved.
Description
Technical Field
The invention relates to the field of power line safety monitoring, in particular to a smart grid power line safety real-time online monitoring cloud platform based on a wireless sensor network technology.
Background
With the development of intelligent power distribution network technology and the continuous promotion of the automatic construction process of the power system, how to effectively monitor the abnormity of the power line in the power distribution network becomes a new demand point and a hot topic of research of the power production department.
At present, the current power distribution network power line safety monitoring technology only monitors the instantaneous fault state of a power line, the fault monitoring system is mainly used for fault reporting, the state of the power line in normal operation is not monitored, the hysteresis of monitoring information exists, therefore, the power line in the power distribution network cannot be timely, effectively and pertinently processed, meanwhile, the current technology mainly adopts a fault isolation method, the fault point of the power line in the power distribution network is searched manually, the fault troubleshooting efficiency of the power distribution network is reduced, the safety power supply guarantee of the power distribution network is influenced, the power failure time of the power distribution network coverage area is prolonged, further, the power consumption requirements of people cannot be met, in order to solve the problems, the current design is based on a smart power grid power line safety real-time online monitoring cloud platform of a wireless sensor network technology.
Disclosure of Invention
The invention aims to provide a smart grid power line safety real-time online monitoring cloud platform based on a wireless sensor network technology, which divides power lines in a power distribution network, detects branch initial end voltage and terminal end voltage of each power line in the power distribution network, calculates voltage difference values of each power line in the power distribution network, analyzes whether the voltage of each power line in the power distribution network is abnormal or not, counts the serial number of each power line with abnormal voltage in the power distribution network, simultaneously lays detection points in each section of circuit area on each power line in the power distribution network, obtains current of each section of circuit area on each power line in the power distribution network, extracts the current of each section of circuit area on each power line with abnormal voltage in the power distribution network, calculates the current difference value of each section of circuit area on each power line with abnormal voltage in the power distribution network, and simultaneously analyzes the line abnormal type of each power line with abnormal voltage, the line area numbers of each power line with the line broken and the line short are counted, corresponding early warning reminding and displaying are carried out, relevant personnel carry out corresponding processing measures, and the problems in the background art are solved.
The purpose of the invention can be realized by the following technical scheme:
the smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology comprises a power grid line dividing module, a line voltage detection module, a line voltage analysis module, a detection point arrangement module, a region current acquisition module, a region current analysis module, an analysis server, a storage database, a cloud analysis platform and an early warning display module;
the analysis server is respectively connected with the line voltage analysis module, the area current analysis module, the storage database and the cloud analysis platform, the line voltage detection module is respectively connected with the power grid line division module and the line voltage analysis module, the detection point distribution module is respectively connected with the power grid line division module and the area current acquisition module, the area current acquisition module is connected with the area current analysis module, and the cloud analysis platform is connected with the early warning display module;
the power grid line dividing module is used for dividing power lines in the power distribution network, dividing the power distribution network into each power line according to the power lines of different branches, numbering the power lines in the power distribution network in sequence according to a set sequence, wherein the number of each power line in the power distribution network is 1,2, 1, i, n, and sending the number of each power line in the power distribution network to the line voltage detection module; simultaneously, each power line in the power distribution network is divided into a plurality of line areas according to the positions of all telegraph poles on the power lines, and the line areas on all power lines in the power distribution network are numbered in sequence to form a line area number set A of all power lines in the power distribution networki(ai1,ai2,...,aij,...,aim)，aij represents the area number of the j-th section of line on the ith power line in the power distribution network, and the area number set of each section of line on each power line in the power distribution network is sent to the detection point distribution module;
the line voltage detection module comprises a plurality of voltage sensors and is used for receiving the serial numbers of all power lines in the power distribution network sent by the power grid line division module, respectively detecting the branch initial end voltage and the branch terminal end voltage of all the power lines in the power distribution network in real time through the voltage sensors, counting the branch initial end voltage and the branch terminal end voltage of all the power lines in the power distribution network, and respectively forming the branch initial end voltage and the branch terminal end voltage of all the power lines in the power distribution networkTerminal voltage set U (U)1,u2,...,ui,...,un) And a branch terminal voltage set U ' (U ') of each power line in the power distribution network '1,u′2,...,u′i,...,u′n)，uiIs expressed as the branch starting end voltage u 'of the ith power line in the power distribution network'iThe branch line initial end voltage set and the branch line terminal voltage set of each power line in the power distribution network are sent to a line voltage analysis module;
the line voltage analysis module is used for receiving a branch initial end voltage set and a branch terminal voltage set of each power line in the power distribution network sent by the line voltage detection module, calculating voltage difference values of each power line in the power distribution network, counting the voltage difference values of each power line in the power distribution network, and forming a voltage difference value set delta U (delta U) of each power line in the power distribution network1,Δu2,...,Δui,...,Δun)，ΔuiThe voltage difference value of the ith power line in the power distribution network is represented, and the voltage difference value set of each power line in the power distribution network is sent to an analysis server;
the analysis server is used for receiving the voltage difference value sets of all power lines in the power distribution network sent by the line voltage analysis module, extracting the allowable voltage loss ranges of the power lines in the power distribution network stored in the storage database, comparing the voltage difference values of all the power lines in the power distribution network with the allowable voltage loss ranges of the power lines respectively, indicating that the voltage difference value of a certain power line in a plurality of power distribution networks is within the allowable voltage loss range of the power line, indicating that the voltage of the power line is not abnormal, indicating that the voltage of the power line is abnormal when the voltage difference value of a certain power line in a plurality of power distribution networks is outside the allowable voltage loss range of the power line, counting the numbers of all the power lines with abnormal voltage in the power distribution network, and sending the numbers of all the power lines with abnormal voltage in the power distribution network to the regional current analysis module;
the detection point distribution module is used for receiving each section of line on each power line in the power distribution network sent by the power grid line division moduleA road area number set, in which, the received distribution network is distributed with detection points in each section of the power line, the statistics of the detection point position numbers in each section of the power line in the distribution network constitutes a detection point position number set P in each section of the power line in the distribution networkiA(pia1,pia2,...,piaj,...,piam)，piajThe method comprises the steps of representing detection point position numbers of j-th section of line area on the ith power line in the power distribution network, and sending a collection of the detection point position numbers of each section of line area on each power line in the power distribution network to a regional current acquisition module;
the regional current acquisition module is used for receiving a detection point position number set of each section of line region on each power line in the power distribution network sent by the detection point distribution module, extracting the current detected at the detection point position of each section of line region on each power line in the power distribution network, counting the current of each section of line region on each power line in the power distribution network, and forming a current set I of each section of line region on each power line in the power distribution networkiA(Iia1,Iia2,...,Iiaj,...,Iiam),IiajThe current of the j section of line area on the ith power line in the power distribution network is represented, and the current set of each section of line area on each power line in the power distribution network is sent to the area current analysis module;
the regional current analysis module is used for receiving the serial numbers of all power lines with abnormal voltage in the power distribution network sent by the analysis server, extracting the current set of all line regions on all power lines with abnormal voltage in the power distribution network sent by the regional current acquisition module, extracting the current of all line regions on all power lines with abnormal voltage in the power distribution network, and forming a current set IA (I) of all line regions on all power lines with abnormal voltage in the power distribution network1a,I2a,...,Ifa,...,Ika),k≤n，Ifa represents the current in the a-th section of the power line on the f-th power line with abnormal voltage in the power distribution network, and a is equal toa1,a2,...,aj,...,amSending the current set of each section of line area on each power line with abnormal voltage in the power distribution network to an analysis server;
the analysis server is used for receiving the current set of each section of line region on each power line with abnormal voltage in the power distribution network, which is sent by the regional current analysis module, extracting the standard current on the power lines in the power distribution network, which is stored in the storage database, calculating the current difference value of each section of line region on each power line with abnormal voltage in the power distribution network, counting the current difference value of each section of line region on each power line with abnormal voltage in the power distribution network, and sending the current difference value of each section of line region on each power line with abnormal voltage in the power distribution network to the cloud analysis platform;
the storage database is used for storing the allowable voltage loss range of the power line in the power distribution network and simultaneously storing the standard current I on the power line in the power distribution networkSign board；
The cloud analysis platform is used for receiving the current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network sent by the analysis server, analyzing the received current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is zero, indicating that the line of the certain section of line area on the power line is normal, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is standard current, indicating that the line of the certain section of line area on the power line is broken, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is infinite, indicating that the line of the certain section of line area on the power line is short-circuited, and counting the number of all sections of line areas with broken lines on all power lines with abnormal voltage in the power distribution network and the number of short-circuited lines on all power lines The method comprises the steps of segment line area numbering, extracting open circuit line area numbering which is in front of each power line with abnormal voltage in a power distribution network and short circuit line area numbering which is in front of each power line with abnormal voltage in the power distribution network, respectively counting line area numbering on each power line with open circuit in the power distribution network and line area numbering on each power line with short circuit in the power distribution network, and sending the line area numbering on each power line with open circuit and short circuit in the power distribution network to an early warning display module;
the early warning display module is used for receiving line area numbers of each power line with line disconnection and line short circuit in the power distribution network sent by the cloud analysis platform, carrying out corresponding early warning reminding and displaying, and carrying out corresponding treatment measures by related personnel according to the numbers of the early warning reminding and displaying.
Furthermore, the voltage sensors are respectively installed at the branch starting end and the branch terminal of each power line in the power distribution network, and the voltage sensors are respectively connected with each power line in the power distribution network in series.
Further, the voltage difference value calculation formula of each power line in the power distribution network is delta ui＝ui-u′i，ΔuiExpressed as the voltage difference, u, of the ith power line in the distribution networkiIs expressed as the branch starting end voltage u 'of the ith power line in the power distribution network'iIndicated as the branch terminal voltage of the ith power line in the distribution network.
Furthermore, the detection point distribution module uniformly distributes a plurality of detection points at the central point position of each section of line area of each power line in the power distribution network, and the numbers of the detection points correspond to the numbers of each section of line area of each power line in the power distribution network one by one.
Furthermore, the regional current acquisition module includes a plurality of current sensors, wherein the plurality of current sensors are respectively installed at detection point positions of each section of line region of each power line in the power distribution network, and the plurality of current sensors are respectively connected in series with each section of line region of each power line in the power distribution network, and detect the current of each section of line region of each power line in the power distribution network through the current sensors.
Further, the current difference value calculation formula of each section of line area on each power line with abnormal voltage in the power distribution network is delta Ifa＝|Ifa-ISign board|，ΔIfa is represented by the current difference of the section a on the f-th power line which is indicated as voltage abnormality in the distribution network, and a is a1,a2,...,aj,...,am，Ifa represents the current in the a-th section of the power line on the f-th power line with abnormal voltage in the power distribution network, ISign boardExpressed as the standard current on the power line in the distribution network.
Further, the early warning prompt corresponding to the circuit open circuit is a yellow early warning, and the early warning prompt corresponding to the circuit short circuit is a red early warning.
Has the advantages that:
(1) according to the smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology, the power lines in the power distribution network are divided, the branch initial end voltage and the terminal voltage of each power line in the power distribution network are detected, the voltage difference value of each power line in the power distribution network is calculated, whether the voltage of each power line in the power distribution network is abnormal or not is analyzed, accordingly, the hysteresis of monitoring information is avoided, the power lines in the power distribution network can be effectively and timely processed in a targeted mode, the serial numbers of each power line with abnormal voltage in the power distribution network are counted, and a foundation is laid for later-stage analysis of the line area with abnormal voltage on each power line in the power distribution network.
(2) According to the method, detection points are distributed on all sections of the power lines in the power distribution network, currents of all sections of the power lines in the power distribution network are obtained, the currents of all sections of the power lines with abnormal voltage in the power distribution network are extracted, the current difference of all sections of the power lines with abnormal voltage in the power distribution network is calculated, the line abnormal type of all power lines with abnormal voltage is analyzed, the line area numbers of all power lines with circuit breaking and short circuit are counted, corresponding early warning reminding and displaying are carried out, and relevant personnel carry out corresponding processing measures, so that the fault troubleshooting efficiency of the power distribution network is improved, the safe power supply of the power distribution network is guaranteed, the power failure time of the power distribution network coverage area is reduced, and the power consumption requirements of people are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology includes a power grid line dividing module, a line voltage detection module, a line voltage analysis module, a detection point arrangement module, a region current acquisition module, a region current analysis module, an analysis server, a storage database, a cloud analysis platform, and an early warning display module.
The analysis server is respectively connected with the line voltage analysis module, the area current analysis module, the storage database and the cloud analysis platform, the line voltage detection module is respectively connected with the power grid line division module and the line voltage analysis module, the detection point arrangement module is respectively connected with the power grid line division module and the area current acquisition module, the area current acquisition module is connected with the area current analysis module, and the cloud analysis platform is connected with the early warning display module.
The power grid line dividing module is used for dividing power lines in the power distribution network, dividing the power distribution network into various power lines according to the power lines of different branches, and sequentially feeding the various power lines in the power distribution network according to a set sequenceThe power distribution network line number is 1,2, 1, i, n, and the number of each power line in the power distribution network is sent to a line voltage detection module; simultaneously, each power line in the power distribution network is divided into a plurality of line areas according to the positions of all telegraph poles on the power lines, and the line areas on all power lines in the power distribution network are numbered in sequence to form a line area number set A of all power lines in the power distribution networki(ai1,ai2,...,aij,...,aim)，aij represents the area number of the j-th section of line on the ith power line in the power distribution network, and the collection of the area numbers of all the sections of lines on all the power lines in the power distribution network is sent to the detection point laying module.
The line voltage detection module comprises a plurality of voltage sensors, wherein the voltage sensors are respectively installed at the branch initial ends and the branch terminal ends of all power lines in the power distribution network, the voltage sensors are respectively connected with all power lines in the power distribution network in series and used for receiving the serial numbers of all power lines in the power distribution network sent by the power grid line dividing module, the branch initial end voltage and the branch terminal voltage of all power lines in the power distribution network are respectively detected in real time through the voltage sensors, the branch initial end voltage and the branch terminal voltage of all power lines in the power distribution network are counted, and a branch initial end voltage set U (U) of all power lines in the power distribution network is respectively formed1,u2,...,ui,...,un) And a branch terminal voltage set U ' (U ') of each power line in the power distribution network '1,u′2,...,u′i,...,u′n)，uiIs expressed as the branch starting end voltage u 'of the ith power line in the power distribution network'iAnd the branch terminal voltage represented as the ith power line in the power distribution network is sent to the line voltage analysis module by the branch initial end voltage set and the branch terminal voltage set of each power line in the power distribution network.
The line voltage analysis module is used for receiving the branch initial end voltage set and the branch terminal voltage set of each power line in the power distribution network sent by the line voltage detection module, and calculating each branch initial end voltage set and each branch terminal voltage set in the power distribution networkVoltage difference value delta u of power linei＝ui-u′i，ΔuiExpressed as the voltage difference, u, of the ith power line in the distribution networkiIs expressed as the branch starting end voltage u 'of the ith power line in the power distribution network'iThe branch terminal voltage of the ith power line in the power distribution network is represented, the voltage difference value of each power line in the power distribution network is counted, and a voltage difference value set delta U (delta U) of each power line in the power distribution network is formed1,Δu2,...,Δui,...,Δun) And sending the voltage difference value set of each power line in the power distribution network to an analysis server.
The analysis server is used for receiving the voltage difference value sets of all the electric power lines in the power distribution network sent by the line voltage analysis module, extracting and storing the allowable voltage loss ranges of the electric power lines in the power distribution network stored in the database, comparing the voltage difference values of all the electric power lines in the power distribution network with the allowable voltage loss ranges of the electric power lines respectively, indicating that the voltage difference value of a certain electric power line in a plurality of power distribution networks is within the allowable voltage loss range of the electric power line and indicating that the voltage of the certain electric power line is abnormal, and indicating that the voltage of the certain electric power line is abnormal when the voltage difference value of a certain electric power line in a plurality of power distribution networks is outside the allowable voltage loss range of the electric power line, thereby avoiding the hysteresis of monitoring information, being capable of timely and effectively carrying out targeted processing on the electric power lines in the power distribution network, and counting the, the serial numbers of the power lines with abnormal voltage in the power distribution network are sent to the regional current analysis module, and a foundation is laid for later analysis of the line regions with abnormal voltage on the power lines in the power distribution network.
The detection point distribution module is used for receiving the collection of the numbers of the sections of the power lines in the power distribution network sent by the power line division module, distributing the detection points in the sections of the power lines in the power distribution network, uniformly distributing the detection points at the central point of the sections of the power lines in the power distribution network, and connecting the detection point numbers with the section of the power lines in the power distribution networkOne-to-one correspondence is carried out, the detection point position numbers of all the sections of line areas on all the power lines in the power distribution network are counted, and a detection point position number set P of all the sections of line areas on all the power lines in the power distribution network is formediA(pia1,pia2,...,piaj,...,piam)，piajAnd the detection point position numbers of j-th section of line area on the ith power line in the power distribution network are represented, and the detection point position number sets of each section of line area on each power line in the power distribution network are sent to the area current acquisition module.
The regional current acquisition module is used for receiving a detection point position number set of each section of line region on each power line in the power distribution network sent by the detection point distribution module, extracting the current detected at the detection point position of each section of line region on each power line in the power distribution network, counting the current of each section of line region on each power line in the power distribution network, and forming a current set I of each section of line region on each power line in the power distribution networkiA(Iia1,Iia2,...,Iiaj,...,Iiam),IiajThe current of the j section of line area on the ith power line in the power distribution network is represented, and the current set of each section of line area on each power line in the power distribution network is sent to the area current analysis module;
the regional current acquisition module comprises a plurality of current sensors, wherein the plurality of current sensors are respectively installed at detection point positions of each section of line region of each power line in the power distribution network, the plurality of current sensors are respectively connected in series with each section of line region of each power line in the power distribution network, and the current sensors are used for detecting the current of each section of line region of each power line in the power distribution network.
The regional current analysis module is used for receiving the serial numbers of all power lines with abnormal voltage in the power distribution network sent by the analysis server, extracting the current set of all line regions on all power lines in the power distribution network sent by the regional current acquisition module, and extracting all power lines with abnormal voltage in the power distribution networkThe current in each section of line region constitutes the current set IA (I) of each section of line region on each power line with abnormal voltage in the power distribution network1a,I2a,...,Ifa,...,Ika),k≤n，Ifa represents the current in the a-th section of the power line on the f-th power line with abnormal voltage in the power distribution network, and a is a1,a2,...,aj,...,amAnd sending the current set of each section of line area on each power line with abnormal voltage in the power distribution network to an analysis server.
The analysis server is used for receiving the current set of each section of line region on each power line with abnormal voltage in the power distribution network sent by the regional current analysis module, extracting the standard current on the power line in the power distribution network stored in the storage database, and calculating the current difference value delta I of each section of line region on each power line with abnormal voltage in the power distribution networkfa＝|Ifa-ISign board|，ΔIfa is represented by the current difference of the section a on the f-th power line which is indicated as voltage abnormality in the distribution network, and a is a1,a2,...,aj,...,am，Ifa represents the current in the a-th section of the power line on the f-th power line with abnormal voltage in the power distribution network, ISign boardThe current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network are counted, and the current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network are sent to the cloud analysis platform.
The storage database is used for storing the allowable voltage loss range of the power line in the power distribution network and simultaneously storing the standard current I on the power line in the power distribution networkSign board。
The cloud analysis platform is used for receiving the current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network sent by the analysis server, analyzing the received current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is zero, indicating that the line of the certain section of line area on the power line is normal, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is standard current, indicating that the line of the certain section of line area on the power line is broken, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is infinite, indicating that the line of the certain section of line area on the power line is short-circuited, and counting the number of all sections of line areas with broken lines on all power lines with abnormal voltage in the power distribution network and the number of short-circuited lines on all power lines The method comprises the steps of section line area numbering, extracting the forward sequence open circuit area numbering on each power line with abnormal voltage in the power distribution network and the forward sequence short circuit area numbering on each power line with abnormal voltage, respectively counting the line area numbering on each power line with open circuit in the power distribution network and the line area numbering on each power line with short circuit in the power distribution network, and sending the line area numbering on each power line with open circuit and short circuit in the power distribution network to an early warning display module.
The early warning display module is used for receiving the regional serial number of each power line of line break and line short circuit in the distribution network that cloud analysis platform sent, and carry out corresponding early warning and show, wherein the early warning that the line break corresponds is reminded for yellow early warning, the early warning that the line short circuit corresponds is reminded for red early warning, relevant personnel remind and carry out corresponding treatment according to the serial number that the early warning was reminded and was shown, thereby improve the troubleshooting efficiency of distribution network, the safe power supply of distribution network has been ensured, and then reduce the power off time that the distribution network covers the area, satisfy people's power consumption demand.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (7)
1. Intelligent power grid power line safety real-time on-line monitoring cloud platform based on wireless sensor network technique, its characterized in that: the system comprises a power grid line dividing module, a line voltage detection module, a line voltage analysis module, a detection point arrangement module, a region current acquisition module, a region current analysis module, an analysis server, a storage database, a cloud analysis platform and an early warning display module;
the analysis server is respectively connected with the line voltage analysis module, the area current analysis module, the storage database and the cloud analysis platform, the line voltage detection module is respectively connected with the power grid line division module and the line voltage analysis module, the detection point distribution module is respectively connected with the power grid line division module and the area current acquisition module, the area current acquisition module is connected with the area current analysis module, and the cloud analysis platform is connected with the early warning display module;
the power grid line dividing module is used for dividing power lines in the power distribution network, dividing the power distribution network into each power line according to the power lines of different branches, numbering the power lines in the power distribution network in sequence according to a set sequence, wherein the number of each power line in the power distribution network is 1,2, 1, i, n, and sending the number of each power line in the power distribution network to the line voltage detection module; simultaneously, each power line in the power distribution network is divided into a plurality of line areas according to the positions of all telegraph poles on the power lines, and the line areas on all power lines in the power distribution network are numbered in sequence to form a line area number set A of all power lines in the power distribution networki(ai1,ai2,...,aij,...,aim)，aij represents the area number of the j-th section of line on the ith power line in the power distribution network, and the area number set of each section of line on each power line in the power distribution network is sent to the detection point distribution module;
the line voltage detection module comprises a plurality of voltage sensors and is used for receiving the serial numbers of all the electric power lines in the power distribution network sent by the power grid line division module, respectively detecting the branch initial end voltage and the branch terminal voltage of all the electric power lines in the power distribution network in real time through the voltage sensors, counting the branch initial end voltage and the branch terminal voltage of all the electric power lines in the power distribution network,a branch initial end voltage set U (U) respectively forming each power line in the power distribution network1,u2,...,ui,...,un) And a branch terminal voltage set U ' (U ') of each power line in the power distribution network '1,u′2,...,u′i,...,u′n)，uiIs expressed as the branch starting end voltage u 'of the ith power line in the power distribution network'iThe branch line initial end voltage set and the branch line terminal voltage set of each power line in the power distribution network are sent to a line voltage analysis module;
the line voltage analysis module is used for receiving a branch initial end voltage set and a branch terminal voltage set of each power line in the power distribution network sent by the line voltage detection module, calculating voltage difference values of each power line in the power distribution network, counting the voltage difference values of each power line in the power distribution network, and forming a voltage difference value set delta U (delta U) of each power line in the power distribution network1,Δu2,...,Δui,...,Δun)，ΔuiThe voltage difference value of the ith power line in the power distribution network is represented, and the voltage difference value set of each power line in the power distribution network is sent to an analysis server;
the analysis server is used for receiving the voltage difference value sets of all power lines in the power distribution network sent by the line voltage analysis module, extracting the allowable voltage loss ranges of the power lines in the power distribution network stored in the storage database, comparing the voltage difference values of all the power lines in the power distribution network with the allowable voltage loss ranges of the power lines respectively, indicating that the voltage difference value of a certain power line in a plurality of power distribution networks is within the allowable voltage loss range of the power line, indicating that the voltage of the power line is not abnormal, indicating that the voltage of the power line is abnormal when the voltage difference value of a certain power line in a plurality of power distribution networks is outside the allowable voltage loss range of the power line, counting the numbers of all the power lines with abnormal voltage in the power distribution network, and sending the numbers of all the power lines with abnormal voltage in the power distribution network to the regional current analysis module;
the detection point laying module is used for receiving a power grid line dividing moduleThe method comprises the steps of sending a collection of numbers of all sections of circuit areas on all power lines in the power distribution network, laying detection points for all sections of circuit areas on all power lines in the received power distribution network, counting the numbers of the positions of the detection points in all sections of circuit areas on all power lines in the power distribution network, and forming a collection P of the numbers of the positions of the detection points in all sections of circuit areas on all power lines in the power distribution networkiA(pia1,pia2,...,piaj,...,piam)，piajThe method comprises the steps of representing detection point position numbers of j-th section of line area on the ith power line in the power distribution network, and sending a collection of the detection point position numbers of each section of line area on each power line in the power distribution network to a regional current acquisition module;
the regional current acquisition module is used for receiving a detection point position number set of each section of line region on each power line in the power distribution network sent by the detection point distribution module, extracting the current detected at the detection point position of each section of line region on each power line in the power distribution network, counting the current of each section of line region on each power line in the power distribution network, and forming a current set I of each section of line region on each power line in the power distribution networkiA(Iia1,Iia2,...,Iiaj,...,Iiam),IiajThe current of the j section of line area on the ith power line in the power distribution network is represented, and the current set of each section of line area on each power line in the power distribution network is sent to the area current analysis module;
the regional current analysis module is used for receiving the serial numbers of all power lines with abnormal voltage in the power distribution network sent by the analysis server, extracting the current set of all line regions on all power lines with abnormal voltage in the power distribution network sent by the regional current acquisition module, extracting the current of all line regions on all power lines with abnormal voltage in the power distribution network, and forming a current set IA (I) of all line regions on all power lines with abnormal voltage in the power distribution network1a,I2a,...,Ifa,...,Ika),k≤n，Ifa is the f-th power of voltage abnormality in the distribution networkCurrent in the a-th section of the line, a ═ a1,a2,...,aj,...,amSending the current set of each section of line area on each power line with abnormal voltage in the power distribution network to an analysis server;
the analysis server is used for receiving the current set of each section of line region on each power line with abnormal voltage in the power distribution network, which is sent by the regional current analysis module, extracting the standard current on the power lines in the power distribution network, which is stored in the storage database, calculating the current difference value of each section of line region on each power line with abnormal voltage in the power distribution network, counting the current difference value of each section of line region on each power line with abnormal voltage in the power distribution network, and sending the current difference value of each section of line region on each power line with abnormal voltage in the power distribution network to the cloud analysis platform;
the storage database is used for storing the allowable voltage loss range of the power line in the power distribution network and simultaneously storing the standard current I on the power line in the power distribution networkSign board；
The cloud analysis platform is used for receiving the current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network sent by the analysis server, analyzing the received current difference values of all sections of line areas on all power lines with abnormal voltage in the power distribution network, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is zero, indicating that the line of the certain section of line area on the power line is normal, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is standard current, indicating that the line of the certain section of line area on the power line is broken, if the current difference value of a certain section of line area on a certain power line with abnormal voltage in the power distribution network is infinite, indicating that the line of the certain section of line area on the power line is short-circuited, and counting the number of all sections of line areas with broken lines on all power lines with abnormal voltage in the power distribution network and the number of short-circuited lines on all power lines The method comprises the steps of segment line area numbering, extracting open circuit line area numbering which is in front of each power line with abnormal voltage in a power distribution network and short circuit line area numbering which is in front of each power line with abnormal voltage in the power distribution network, respectively counting line area numbering on each power line with open circuit in the power distribution network and line area numbering on each power line with short circuit in the power distribution network, and sending the line area numbering on each power line with open circuit and short circuit in the power distribution network to an early warning display module;
the early warning display module is used for receiving line area numbers of each power line with line disconnection and line short circuit in the power distribution network sent by the cloud analysis platform, carrying out corresponding early warning reminding and displaying, and carrying out corresponding treatment measures by related personnel according to the numbers of the early warning reminding and displaying.
2. The smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology according to claim 1, characterized in that: the voltage sensors are respectively installed at the initial ends and the terminal ends of the branch circuits of the power lines in the power distribution network, and the voltage sensors are respectively connected with the power lines in the power distribution network in series.
3. The smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology according to claim 1, characterized in that: the voltage difference value calculation formula of each power line in the power distribution network is delta ui＝ui-u′i，ΔuiExpressed as the voltage difference, u, of the ith power line in the distribution networkiIs expressed as the branch starting end voltage u 'of the ith power line in the power distribution network'iIndicated as the branch terminal voltage of the ith power line in the distribution network.
4. The smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology according to claim 1, characterized in that: the detection point distribution module is used for uniformly distributing a plurality of detection points at the central point position of each section of line area of each power line in the power distribution network, and the numbers of the detection points correspond to the numbers of each section of line area of each power line in the power distribution network one by one.
5. The smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology according to claim 1, characterized in that: the regional current acquisition module comprises a plurality of current sensors, wherein the plurality of current sensors are respectively installed at detection point positions of each section of line region of each power line in the power distribution network, the plurality of current sensors are respectively connected in series with each section of line region of each power line in the power distribution network, and the current sensors are used for detecting the current of each section of line region of each power line in the power distribution network.
6. The smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology according to claim 1, characterized in that: the current difference value calculation formula of each section of line area on each power line with abnormal voltage in the power distribution network is delta Ifa＝|Ifa-ISign board|，ΔIfa is represented by the current difference of the section a on the f-th power line which is indicated as voltage abnormality in the distribution network, and a is a1,a2,...,aj,...,am，Ifa represents the current in the a-th section of the power line on the f-th power line with abnormal voltage in the power distribution network, ISign boardExpressed as the standard current on the power line in the distribution network.
7. The smart grid power line safety real-time online monitoring cloud platform based on the wireless sensor network technology according to claim 1, characterized in that: the early warning corresponding to the circuit open circuit is a yellow early warning, and the early warning corresponding to the circuit short circuit is a red early warning.
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Application publication date: 20210618 |