CN115356975A - Comprehensive electrical monitoring system - Google Patents
Comprehensive electrical monitoring system Download PDFInfo
- Publication number
- CN115356975A CN115356975A CN202211023963.4A CN202211023963A CN115356975A CN 115356975 A CN115356975 A CN 115356975A CN 202211023963 A CN202211023963 A CN 202211023963A CN 115356975 A CN115356975 A CN 115356975A
- Authority
- CN
- China
- Prior art keywords
- substation
- monitoring
- power supply
- fire
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to the technical field of electrical power supply and distribution engineering, and relates to a comprehensive electrical monitoring system, which comprises: the system comprises a central substation communication machine room and substations, wherein a plurality of substations are connected in a ring network and then are connected to the central substation communication machine room in a network manner, a server and a workstation are arranged in the central substation communication machine room, and a station control unit, a wire inlet cabinet, a feeder cabinet and a substation switch are arranged in each substation; the system comprises a station control unit, a central substation communication machine room, a power supply and distribution equipment management unit, a power distribution system monitoring and management unit and a power supply and distribution equipment management unit, wherein the station control unit is used for locally acquiring electrical parameters of each loop in the substation, processing aging analysis of the power supply and distribution equipment, post-fault analysis and power supply recovery guidance operation, and is also used for uploading analysis and judgment results to a server and a workstation of the central substation communication machine room through a network.
Description
Technical Field
The invention belongs to the technical field of electrical power supply and distribution engineering, and relates to a comprehensive electrical monitoring system.
Background
In order to meet the requirements of high reliability, high intellectualization and other distributed power supply access of a power distribution system, an intelligent power distribution system needs to be adapted to the power distribution system with high technical content and an automation system. The intelligent power distribution is an important link of the intelligent power grid terminal, is in closest contact with a user, and has the most direct influence on the user. The intelligent power distribution technology plays an important role in improving the efficiency, quality and reliability of power supply of users and ensuring the implementation of the whole process of an intelligent power grid. The application of the intelligent power distribution system provides a platform for scientific operation and maintenance management, fusion and interconnection of all links of the electrical comprehensive monitoring system are realized, the system state is comprehensively sensed, fault reasons are analyzed at the bottom layer, emergencies are efficiently processed, the system with poor effect due to false alarm is promoted, repeated setting of measurement and judgment links is avoided, equipment and wiring cost is saved, and energy conservation and emission reduction are realized.
However, problems of repeated monitoring, wiring, analysis and processing of a power distribution system, system compatibility and the like exist in the construction of a building project for a long time, and the problems are particularly obvious in large-scale electrical supply and distribution facilities such as airports, railway stations, distribution substations and the like. Conventional power distribution systems each have their own drawbacks. In the actual use process of the electrical fire monitoring and alarming system of the traditional residual current type power distribution system, due to the fact that various factors such as non-resistive residual current, harmonic current interference, different normal leakage currents of various devices, difficulty in determining proper action values, single criterion and the like cause false alarms in different degrees, the overall effect of the system is not ideal. The technology of the power monitoring system of the defense equipment in the existing power distribution system is generally based on the comparison of alarm threshold values of transient parameters such as current, voltage, residual current and the like, and belongs to a transient parameter technology system, and the early hidden danger of the power distribution system has the characteristics of weak signals, slow change and the like, so that the early hidden danger value of the power distribution system is smaller than or far smaller than the alarm threshold value, the system enters the repeated balance of the alarm threshold value and the false alarm rate, and the effectiveness and the reliability of the system are reduced. And the traditional fire-fighting power supply monitoring system only provides data functions such as threshold value alarm and the like, and does not provide functions such as fault analysis, plan disposal and the like or realize the function without actual operation and maintenance capabilities such as fault auxiliary elimination and the like. The existing power distribution system is repeated in monitoring and wiring, and the criterion is single, so that false alarm and wrong report are easily caused, and the method becomes the urgent need for treatment of common diseases of the power distribution system.
Therefore, an electrical monitoring system which is simpler, does not repeat monitoring and wiring, analysis and processing, and reports faults more accurately is needed to solve the problem.
Disclosure of Invention
The technical scheme adopted by the invention for solving the technical problem is as follows: an integrated electrical monitoring system comprising: the system comprises a central substation communication machine room, substations and a plurality of substations, wherein a plurality of substations are connected in a ring network and then are connected to the central substation communication machine room in a network connection manner; the central substation communication machine room is used for monitoring, controlling and managing substations in the ring network; a server and a workstation are arranged in the central substation communication machine room; a station control unit, a wire inlet cabinet, a feeder cabinet and a substation switch are arranged in the substation; the station control unit is used for locally acquiring electrical parameters of each loop in the substation, processing aging analysis of power supply and distribution equipment, post-fault analysis and power supply recovery guidance operation, and uploading analysis and judgment results to a server and a workstation of a central substation communication machine room through a network;
the station control unit performs data analysis on equipment operation and power supply and distribution equipment states according to state trends and system database experiences according to field acquired information, optimizes system protection setting values, finds equipment operation abnormal information and fault information, judges the health conditions of the power supply and distribution equipment, gives specific operation and maintenance guidance, intelligently completes asset operation condition evaluation of a power supply and distribution system, accurately formulates an operation and maintenance strategy, completes complex operation on site, only quickly uploads analysis and judgment results to a system host through a protocol network, and the host performs operation and maintenance work such as fault positioning, order dispatching management and the like according to the results;
the intelligent instrument is used for monitoring the electrical parameters of each loop, the intelligent circuit breaker is used for uploading the health condition of a fire-fighting distribution loop circuit device, the electrical fire monitoring detector is used for monitoring and detecting the electrical fire in a feeder cabinet, the fire-fighting power monitoring detector is used for acquiring and uploading fire-fighting equipment parameter information of the substation, the intelligent instrument, the intelligent circuit breaker and the electrical fire monitoring detector are respectively arranged in the inlet wire cabinet and each feeder cabinet, and the fire-fighting power monitoring detector is arranged in a distribution room of the substation; the system efficiently and stably provides basic power parameters by setting novel terminal acquisition equipment such as an intelligent instrument and a special sensor and using a network transmission mode of an intelligent power supply and distribution system as a fault analysis and judgment basis of a station control unit; wherein, smart meter includes: the system comprises a wireless electric energy measuring meter, a full-electric-quantity power meter with a communication function, an electric energy quality meter, an electric power parameter measuring meter and a three-phase electric energy meter;
the intelligent instrument is connected to a substation switch through a network after being centralized by a communication manager, the intelligent circuit breaker, the electrical fire monitoring detector and the fire-fighting power monitoring detector are respectively connected to the substation switch through the network, the station control unit is connected to the substation switch through the network, and the substation switch is connected to a server and a workstation in a central substation communication machine room through the network; the system uses a special detector, a bus and a gateway at the tail end of the equipment, accesses a monitoring system through a network cable, and provides a new system function which is different from the traditional system and only judges an alarm by using a server; the server has the functions of data storage and analysis processing, performs real-time, daily, monthly and other periodic cyclic comparison on data such as leakage current, temperature and the like collected by the detector, performs comparison analysis on non-fault data which are similar to the transverse comparison of a functional loop and are influenced by environment and end equipment and analyzed to obtain intelligent alarm threshold setting, and provides an operation and maintenance strategy by combining a database fault solution;
the method comprises the steps that a station control unit and a server are arranged, an upper layer data processing mechanism and a lower layer data processing mechanism are arranged, local solution of acquisition and upper intelligent comprehensive analysis at the tail end of the station control unit is achieved, edge calculation and judgment of the station control unit are achieved, judgment result data are directly uploaded to the server, a more effective, more direct and more rapid detection data and fault processing solution is provided, calculation pressure and line transmission pressure of the server are reduced, and the server is used for processing tasks of higher-level analysis and distribution processing work such as data comparison, database analysis and allocation processing work orders;
the method is characterized in that an electrical fire monitoring system is supplemented and perfected on the basis of an intelligent power supply and distribution system, a residual current transformer of the electrical fire monitoring system is used as the only criterion of an electrical fire, the temperature of a wiring terminal of a circuit breaker detected by the intelligent power supply and distribution system is utilized at the same time, historical operation data of the circuit, historical leakage current and other comprehensive data information are utilized to judge the probability of the occurrence of the electrical fire, specific circuit information is sent to a fire alarm controller through a power distribution monitoring center host after a set threshold value is exceeded, the power supply state of fire fighting equipment is transmitted to the outside of a fire alarm and linkage control system in a communication mode for the power supply monitoring system of the fire fighting equipment, the reliability of the power distribution circuit of the fire fighting equipment is judged in advance according to the health condition of the circuit breaker of the fire fighting equipment, the full electric quantity parameters of the circuit and the like, potential fault information and operation and maintenance guidance information are sent to the power distribution monitoring center to be dealt with in time, and the fire fighting equipment is guaranteed to play the due role in the fire.
Preferably, the electrical fire monitoring detector includes: residual current transformer, temperature sensor, trouble arc detector, each return circuit electrical parameter of intelligent instrument control includes: the intelligent instrument acquires and uploads the real-time electrical parameters of the fire-fighting power distribution loop; the uploaded data are transmitted to the server through the network, the server performs analysis processing such as periodic ring ratio, function transverse ratio and database comparison on the data, new functions different from a traditional fire-fighting power supply monitoring system host machine such as fault reason prompt, fault equipment positioning, operation and maintenance solution, data storage, fault prejudgment, fire-fighting power distribution loop health state display and the like are provided, and reliable operation of a fire-fighting power supply is guaranteed.
Preferably, the electrical parameters monitored by the fire-fighting power supply monitoring detector include: the special bus three-phase alternating-current voltage of the main and standby equipment power supplies, the tail end fire fighting equipment and the bus voltage of the power supply box of the especially important equipment.
Preferably, the electrical parameters monitored by the intelligent circuit breaker include: the health condition of the circuit device of the circuit, the intelligent circuit breaker uploads the health condition of the circuit device of the fire protection distribution circuit; the uploaded data are transmitted to the server through the network, the server performs analysis processing such as periodic ring ratio, function transverse ratio and database comparison on the data, fault reason prompt, fault equipment positioning, operation and maintenance solutions and data storage are provided, new functions different from a traditional fire-fighting power supply monitoring system host machine in terms of fault prejudgment, fire-fighting power distribution loop health state display and the like are achieved, and reliable operation of a fire-fighting power supply is guaranteed.
Preferably, still be equipped with collector, UPS module, EPS module, intelligent lightning protection monitoring module in the electric substation, the equal network connection of collector, UPS module, EPS module, intelligent lightning protection monitoring module is to the electric substation switch.
Preferably, the station control unit is further configured to display distribution asset distribution, equipment ledger query, operation and maintenance history query, dynamic display of high-voltage and low-voltage distribution system diagrams, and equipment information manual retrieval of the local substation.
Preferably, the server adopts a dual-system dedicated server cluster, the server adopts a distributed I/O server architecture and a configuration tool, a multi-server architecture, and two servers are mutually hot standby redundant and symmetrically arranged; the power control, energy efficiency statistics and power quality management work of the power transformation and distribution system in 50% of areas are respectively completed at ordinary times, and when one main server fails, the other main server takes over 100% of management work; the UPS uninterrupted power supply is configured in the system, and the power supply load grade is defined to be the highest load grade configuration of the project, so that the stability and the reliability of the system are fundamentally ensured.
Preferably, a large monitoring screen is further arranged in the central substation communication machine room, the large monitoring screen is electrically connected to the workstation, and the large monitoring screen can display operation and maintenance information of the system, such as latest alarm information, historical alarm information, faults, order dispatching management and the like in real time.
Preferably, the intelligent circuit breaker is connected to a substation switch through a wireless network.
Preferably, a compensation cabinet and a filtering cabinet are further arranged in the substation, sensors are arranged in the compensation cabinet and the filtering cabinet, and the sensor network is connected to a switch of the substation.
The invention has the beneficial effects that:
1. the invention integrates the functions of the traditional power monitoring system, the electrical fire monitoring system, the fire-fighting equipment power supply monitoring system, the building intelligent operation and maintenance system and the building energy consumption monitoring system, avoids the problems of monitoring and wiring repetition of a power distribution system, saves the cost, simplifies the network, integrates the reporting criteria of each system, and eliminates the problem that the reported criteria are single and are easy to cause false alarm.
2. The invention is provided with a field station control unit, adopts edge calculation, performs equipment operation and power supply and distribution equipment state data analysis according to state trend and system database experience according to field acquisition information, optimizes system protection fixed value setting, finds equipment operation abnormal information and fault information, judges the health condition of the power supply and distribution equipment, gives specific operation and maintenance guidance, intelligently completes asset operation condition evaluation of the power supply and distribution system, accurately formulates an operation and maintenance strategy, completes the complex operation on site, only quickly uploads the analysis and judgment results to a system host through a protocol network, and the host performs the operation and maintenance work such as fault positioning, order dispatching management and the like according to the results, thereby greatly reducing communication bandwidth and server pressure.
3. The invention adopts a ring network type communication wiring mode, a special server cluster, a distributed I/O multi-server framework and a hot standby redundancy mode, so that the monitoring, the control and the management are safer and more reliable and have strong impact resistance.
Drawings
FIG. 1 is a communication network topology diagram of an integrated electrical monitoring system;
FIG. 2 is a system topology architecture diagram;
FIG. 3 is a schematic view of an electrical fire monitoring detector topology;
fig. 4 is an enlarged partial view of the central substation communications room of fig. 1.
Detailed Description
The related art in the present invention will be described clearly and completely with reference to the accompanying drawings in the following embodiments, and it is to be understood 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. 1-4, an integrated electrical monitoring system, comprising: the system comprises a central substation communication machine room and substations, wherein a plurality of substations are connected in a ring network and then are connected to the central substation communication machine room in a network connection mode; the central substation communication machine room is used for monitoring, controlling and managing substations in the ring network; a server and a workstation are arranged in the central substation communication machine room; a station control unit, a wire inlet cabinet, a feeder cabinet and a substation switch are arranged in the substation; the station control unit is used for locally acquiring electrical parameters of each loop in the substation, processing aging analysis of power supply and distribution equipment, post-fault analysis and power supply recovery guidance operation, and uploading analysis and judgment results to a server and a workstation of a central substation communication machine room through a network;
the station control unit carries out equipment operation and power supply and distribution equipment state data analysis according to state trends and system database experiences according to field acquisition information, optimizes system protection fixed value setting, finds equipment operation abnormal information and fault information, judges the health condition of the power supply and distribution equipment, gives specific operation and maintenance guidance, intelligently finishes asset operation condition evaluation of the power supply and distribution system, accurately formulates an operation and maintenance strategy, finishes complex operation work on site, only quickly uploads analysis and judgment results to a system host through a protocol network, and the host only carries out operation and maintenance work such as fault positioning, order dispatching management and the like according to the results;
the intelligent instrument is used for monitoring the electrical parameters of each loop, the intelligent circuit breaker is used for uploading the health condition of a fire-fighting distribution loop circuit device, the electrical fire monitoring detector is used for monitoring and detecting the electrical fire in a feeder cabinet, the fire-fighting power monitoring detector is used for acquiring and uploading fire-fighting equipment parameter information of the substation, the intelligent instrument, the intelligent circuit breaker and the electrical fire monitoring detector are respectively arranged in the feeder cabinet and each feeder cabinet, and the fire-fighting power monitoring detector is arranged in a distribution room of the substation; the system efficiently and stably provides basic power parameters by setting novel terminal acquisition equipment such as an intelligent instrument and a special sensor and using a network transmission mode of an intelligent power supply and distribution system as a fault analysis and judgment basis of a station control unit; wherein, smart meter includes: the system comprises a wireless electric energy measuring meter, a full-electric-quantity power meter with a communication function, an electric energy quality meter, an electric power parameter measuring meter and a three-phase electric energy meter;
the intelligent instrument is connected to a substation switch through a network after being centralized by a communication manager, the intelligent circuit breaker, the electrical fire monitoring detector and the fire-fighting power supply monitoring detector are respectively connected to the substation switch through the network, the station control unit is connected to the substation switch through the network, and the substation switch is connected to a server and a workstation in a central substation communication machine room through the network; the system uses a special detector, a bus and a gateway at the tail end of the equipment, accesses a monitoring system through a network cable, and provides a new system function which is different from the traditional system and only judges an alarm by using a server; the server has the functions of data storage and analysis processing, performs real-time, daily, monthly and other periodic cyclic comparison on data such as leakage current, temperature and the like collected by the detector, performs comparison analysis on non-fault data which are similar to the transverse comparison of a functional loop and are influenced by environment and end equipment and analyzed to obtain intelligent alarm threshold setting, and provides an operation and maintenance strategy by combining a database fault solution;
through setting up two-layer data processing mechanism about station accuse unit and the server, realize the terminal collection of station accuse unit and go up intelligent integrated analysis's solution on the spot, realize station accuse unit edge calculation and judge, then directly upload judgement result data to the server, provide more effective, more direct, more swift detection data and fault handling solution, reduce the calculation pressure and the circuit transmission pressure of server, the server is used for handling higher level analysis such as data comparison, database analysis, dispatch processing work order and the task of distribution processing work.
Further, the electrical fire monitoring detector includes: residual current transformer, temperature sensor, trouble arc detector, each return circuit electrical parameter of intelligent instrument control includes: the intelligent instrument acquires and uploads the real-time electrical parameters of the fire-fighting power distribution loop; the uploaded data are transmitted to the server through the network, the server performs analysis processing such as periodic ring ratio, function transverse ratio and database comparison on the data, new functions different from a traditional fire-fighting power supply monitoring system host machine such as fault reason prompt, fault equipment positioning, operation and maintenance solution, data storage, fault prejudgment, fire-fighting power distribution loop health state display and the like are provided, and reliable operation of a fire-fighting power supply is guaranteed.
Further, the electrical parameters monitored by the fire-fighting power supply monitoring detector comprise: the special bus three-phase alternating-current voltage of the main and standby equipment power supplies, the tail end fire fighting equipment and the bus voltage of the power supply box of the especially important equipment.
Further, the electrical parameters monitored by the intelligent circuit breaker include: the health condition of the circuit device of the circuit, the intelligent circuit breaker uploads the health condition of the circuit device of the fire protection distribution circuit; the uploaded data are transmitted to the server through the network, the server performs analysis processing such as periodic ring ratio, function transverse ratio and database comparison on the data, new functions different from a traditional fire-fighting power supply monitoring system host machine such as fault reason prompt, fault equipment positioning, operation and maintenance solution, data storage, fault prejudgment, fire-fighting power distribution loop health state display and the like are provided, and reliable operation of a fire-fighting power supply is guaranteed.
Furthermore, still be equipped with collector, UPS module, EPS module, intelligent lightning protection monitoring module in the electric substation, the equal network connection of collector, UPS module, EPS module, intelligent lightning protection monitoring module is to the electric substation switch.
Furthermore, the station control unit is also used for displaying distribution asset distribution, equipment ledger inquiry, operation and maintenance history inquiry, high-low voltage distribution system diagram dynamic display and equipment information manual retrieval of the substation.
Furthermore, the server adopts a dual-system special server cluster, the server adopts a distributed I/O server architecture and a configuration tool, a multi-server architecture, and two servers are mutually in hot standby redundancy and are symmetrically arranged; the power control, energy efficiency statistics and power quality management work of the power transformation and distribution system in 50% of areas are respectively completed at ordinary times, and when one main server fails, the other main server takes over 100% of management work; the UPS is configured in the system, and the power supply load grade is defined to be the highest load grade configuration of the project, so that the stability and the reliability of the system are fundamentally ensured.
Furthermore, a large monitoring screen is further arranged in the central substation communication machine room and electrically connected to the workstation, and the large monitoring screen can display latest alarm information, historical alarm information, faults, dispatching management and other operation and maintenance information of the system in real time.
Further, the intelligent circuit breaker is connected to a substation switch through a wireless network.
Furthermore, a compensation cabinet and a filtering cabinet are further arranged in the substation, sensors are arranged in the compensation cabinet and the filtering cabinet, and the sensor network is connected to a substation switch.
Examples
In this embodiment, in an airport electric power construction project of an actual project, a double-center substation communication machine room is adopted to monitor, control and manage 14 substations in a ring network, as shown in fig. 2. The central substation communication machine room is connected with each substation through an optical fiber network, the inside of each substation is connected through a network cable network, and the communication manager inside the substation is connected to the intelligent instrument in each cabinet through an RS485 interface.
The embodiment has five functions: the system comprises electric power monitoring, electric fire monitoring, fire fighting equipment power monitoring, intelligent operation and maintenance and electric energy consumption monitoring.
The data acquisition task with four main functions is completed by a microcomputer protection device, an intelligent instrument, a wireless temperature measuring element, an intelligent circuit breaker, a residual current detection device, a fire-fighting power supply monitoring detector, an intelligent lightning protection monitoring module, an UPS (electric power storage system) self-contained state monitoring device, a diesel generating set control unit, an RS-485 interface remote transmission water meter, an RS-485 interface remote transmission cold heat meter and the like.
Monitoring the states of all circuit breakers of 10kV and 0.4kV power distribution cabinets; incoming line three-phase voltage, frequency and harmonic content; three-phase current, power factor, active power, reactive power, active electric energy, reactive electric energy and the like of incoming lines, outgoing lines and contact; monitoring the temperature of the transformer and alarming over temperature; the lightning protection monitoring power distribution system comprises a surge protector fault state, leakage current, a backup protector state, a lightning peak value and occurrence time of the lightning protection monitoring power distribution system; a substation ground resistance; the method comprises the following steps of (1) setting oil temperature, cooling water temperature, engine rotating speed, running time, direct-current storage battery pack condition, output voltage and frequency of a diesel generator set; UPS input voltage, input frequency and output voltage; load percentage, input frequency, current waveform, temperature in the UPS, real-time voltage of a battery pack string, discharge current, single battery terminal voltage, multipoint temperature of the battery pack and service life of the battery pack so as to realize power monitoring.
The method is used for detecting the residual current of a loop, the temperature of a connecting terminal of a loop cable, the main power supply of fire-fighting equipment of a substation, the special bus three-phase alternating voltage of a standby power supply, the health condition of a circuit breaker of a low-voltage fire-fighting distribution loop of the substation, the bus voltage of a power box of terminal fire-fighting equipment, the bus voltage of a power box of terminal important loads and the like, and the functions of comprehensive early warning of electrical fires and monitoring of the power supply of the fire-fighting equipment are realized.
The detector, the bus and the gateway used at the tail end of the equipment are connected into the comprehensive monitoring system through network cables, and are matched with intelligent distribution system tail end equipment such as an intelligent circuit breaker, an intelligent instrument and the like, and a comprehensive monitoring system host is utilized to provide new system functions which are different from the traditional system and are only used for judging alarm and switching main power supplies and standby power supplies. The process comprises the following steps: the tail end detector collects three-phase alternating current voltage of a special bus of a main and standby power supply of the fire-fighting equipment of the uploading substation, and bus voltage of a power box of the tail end fire-fighting equipment and the particularly important equipment; the intelligent circuit breaker uploads the health condition of a fire protection power distribution loop circuit device; the intelligent instrument collects and uploads real-time electrical parameters of the fire-fighting power distribution loop; the data are transmitted to the host computer of the comprehensive monitoring system through the professional network of the comprehensive system, the host computer carries out analysis processing such as periodic ring ratio, function transverse ratio and database comparison on the data, new functions different from the host computer of the traditional fire-fighting power supply monitoring system, such as fault reason prompt, fault equipment positioning, operation and maintenance solution, data storage, fault prejudgment, fire-fighting power distribution loop health state display and the like are provided, and the reliable operation of the fire-fighting power supply is ensured.
The intelligent operation and maintenance system comprises a monitoring switch station, a detection circuit cable connecting terminal, a substation low-voltage cabinet, a breaker, a switch-on and switch-off frequency, a contact wear rate, a breaker contact arm temperature and a cable chamber temperature, wherein the switch station is used for monitoring the incoming and outgoing line loop states (switching-off, switching-on and fault), detecting the temperature of a loop cable connecting terminal, the outgoing line loop states (switching-off, switching-on and fault), the breaker switching-off frequency and the contact wear rate, and realizing intelligent operation and maintenance.
The method is characterized in that the method is used for collecting the total power consumption, primary metering of lighting, power, air conditioning and commercial subentry power consumption, the consumption of oil used by a diesel generating set and the like, and realizing the energy consumption monitoring function.
The communication network is formed by a core network switch, a communication line and a gateway according to the Ethernet, a TCP/IP protocol is adopted by a link protocol between a field station control unit, a power distribution monitoring center and the switch, and a field device level communication protocol comprises the following steps: the field devices are all connected into the Ethernet through gateways, a generator set control system, an intelligent lightning protection early warning monitoring system, a UPS and an EPS self-contained state monitoring device are connected into the Ethernet through self-contained Ethernet interfaces, and a direct current screen is connected into the Ethernet through a TCP/IP/MODBUS gateway to complete communication with a field station control unit and a power distribution monitoring center host.
The station control unit displays the distribution asset distribution, equipment ledgers, operation and maintenance history records, dynamic display functions of high and low voltage distribution system diagrams and retrieval functions of equipment information manuals.
The method comprises the steps of carrying out equipment operation and power supply and distribution equipment state data analysis according to state trends and expert base experience according to site acquisition information in a station by adopting an edge calculation mode, optimizing protection fixed value setting, finding out equipment operation abnormal information and fault information, judging the health condition of the power supply and distribution equipment, giving specific operation and maintenance guidance, uploading the operation and maintenance guidance to a power distribution monitoring center to finish evaluation of the asset operation condition of the power supply and distribution system, accurately making operation and maintenance, carrying out maintenance planning and automatically generating a maintenance work order, displaying specific fault positions, various electrical parameters and possible fault reasons when faults occur in local and the power distribution monitoring center when the faults occur, and eliminating the faults in the shortest time for operation and maintenance personnel.
The detector, the bus and the gateway used at the tail end of the equipment are accessed into the embodiment through the network cable, and a comprehensive monitoring system host is utilized to provide a new system function which is different from the traditional system and only judges the alarm. The integrated monitoring system host has the functions of data storage, analysis and processing, carries out real-time, daily, monthly and other periodic cycle comparison on leakage current, temperature and other data collected by a detector, approximates the transverse comparison of a functional loop and analyzes non-fault data of a power distribution loop which is inherently influenced by environment and end equipment to obtain intelligent alarm threshold setting, and provides an operation and maintenance strategy by combining a database fault solution
According to initial leakage current detected by a residual current detection device arranged in a power distribution cabinet of each substation low-voltage power distribution loop and a power distribution room, the probability of electrical fire occurrence is judged according to equivalent comprehensive data information of the temperature and historical operating data of a wiring terminal of a circuit breaker, and specific loop information is sent to a power distribution monitoring center after the specific loop information exceeds a set threshold value.
Except that three-phase alternating current single-way voltage sensors (a CAN bus is adopted and a TCP/IP gateway is connected into an intelligent electrical comprehensive monitoring system) are arranged on a main power supply of fire-fighting equipment of a substation and a special busbar of a standby power supply, the state of a power supply of the fire-fighting equipment is transmitted to a fire alarm and linkage control system by the intelligent electrical comprehensive monitoring system in a communication mode, the state of the power supply of the end fire-fighting equipment is reflected according to the health condition of a low-voltage fire-fighting distribution circuit breaker of each substation and the state of the three-phase alternating current single-way voltage sensors (the CAN bus is adopted and the TCP/IP gateway is connected into the intelligent electrical comprehensive monitoring system) arranged on a power box bus of the end fire-fighting equipment, the reliability of the power supply of the fire-fighting equipment is comprehensively detected, and potential fault information and fault information are transmitted to a distribution monitoring center.
The method comprises the steps of automatically or manually controlling distribution equipment in a power supply network, monitoring real-time power and electric energy data, alarming and event states, equipment states (split/combined and temperature), controlling, uniformly browsing data collected from multiple stages to single equipment and key information collected from key points, customizing an alarm picture, indicating states, triggering control and summarizing the equipment.
The method comprises the steps of judging severity according to event grades, responding by high-speed alarming, capturing and recording each independent alarm or event, managing, screening and printing alarm information according to alarm attributes, receiving electric fire data from a site station control unit, sending the electric fire data to a fire alarm controller as an early warning signal after judgment, receiving alarm information from a fire fighting equipment power supply, sending the alarm information to the fire alarm controller after judgment to specific fault positions and fault reasons, and automatically generating a dispatching list to be sent to operation and maintenance managers for fault elimination.
Trend analysis of the measured parameters facilitates the operator in identifying patterns that may cause disturbances. Historical alerts and historical data records accurate to the millisecond level are helpful for a user to determine the sequence of events and perform root cause analysis. The trend and alarm information are combined to perform complex disturbance event analysis, and different data, time ranges and data thresholds can be clearly highlighted by marking with user-defined colors and layers. And viewing the waveform by using the waveform control, and recording, saving or exporting historical data for archiving.
The single line diagram form is used as a human-computer interaction interface for displaying, monitoring and controlling equipment, objects and power distribution nodes. And directly clicking to enter the next level of pictures to browse more detailed information. The diagrams and templates based on the industrial standard can completely realize dynamic interaction, combine monitoring and control, and use default or user-defined colors to carry out dynamic coloring configuration, thereby providing an intuitive operation interface for operators.
The method comprises the steps of accurately recording the electric energy consumption, counting the electric energy consumption condition, presenting the electric energy consumption condition through a pie chart, a bar chart and the like, avoiding abnormal energy cost increase and fine money through bill analysis, flexibly setting a bill structure matched with a power supply department, presetting time-sharing structure definition for multiple years, counting electric energy consumption data, setting corresponding rates, calculating bills, distributing energy consumption to all departments except according to classification and energy consumption statistics, a production link, establishing energy assessment indexes on the basis of analyzing data, and converting the energy data into traceable carbon emission.
The continuous data acquisition and monitoring analysis can be carried out on the power quality within the range of the whole embodiment. The electric quantity parameters and the electric energy quality of the low-voltage outgoing line loop of each substation can be accurately analyzed to identify electric energy quality disturbance data, and further, the damage of the electric energy quality disturbance data to the system and equipment of the corresponding installation place is analyzed. Each distribution loop power quality monitoring device synchronously captures the waveform of a voltage current signal, the captured waveform is stored in a device memory and is transmitted to an operator workstation at intervals for the operator to display and analyze, perfect harmonic analysis function is provided, and rich charts are provided for displaying: THD (total harmonic distortion) of all voltages, currents, high-precision sub-harmonic analysis.
A distributed I/O server architecture and a configuration tool are adopted, a multi-server architecture is adopted, and a hot/standby redundancy mode is adopted. The method is characterized in that an IEC61850 data model is adopted, an OPC mode is adopted, an airport intelligent energy management and control system is integrated with an airport electric power scheduling system and an OPC UA mode, the electric power scheduling and the intelligent energy management and control functions of an airport area are completed in a matched mode, and monitoring and data analysis of third-party equipment and the like are completed through integration of an ODPC mode, intelligent lightning protection monitoring, a diesel generator set, an UPS, EPS and other equipment.
The intelligent monitoring, intelligent analysis, comparison, energy consumption management and other functions provided by the method completely meet the requirements of the unattended electric power monitoring system and are close to the intelligent operation and maintenance standard.
The intelligent power supply and distribution technology is applied to the embodiment, and the full electric quantity parameters of the intelligent power supply and distribution system are accurately measured through the created comprehensive electric monitoring system, so that the functions of monitoring and integrating the electric fire, the fire fighting equipment power supply and the like are comprehensively analyzed and integrated.
In the actual use process of the traditional residual current type electric fire monitoring and alarming system, due to the fact that various factors such as non-resistive residual current, harmonic current interference, difficulty in determining proper action values due to different normal leakage currents of various devices, single criterion and the like cause false alarms in different degrees, the overall effect is not ideal.
The traditional fire fighting equipment power supply monitoring technology is generally based on the comparison of alarm threshold values of transient parameters such as current, voltage, residual current and the like, and belongs to a transient parameter technology system, and early hidden dangers have the characteristics of weak signals, slow change and the like, so that the numerical values of the early hidden dangers are smaller or far smaller than the alarm threshold values, the system enters the repeated balance selection and rejection of the alarm threshold values and the false alarm rate, the effectiveness and the reliability of the system are reduced, and finally the system is inevitably abandoned for operation and maintenance. And the traditional fire-fighting power supply monitoring system only provides data functions such as threshold value alarm and the like, does not provide functions such as fault analysis and plan disposal or realizes too simple and violent functions, and does not have actual operation and maintenance capabilities such as auxiliary fault elimination and the like.
The embodiment sends professional, accurate and multi-criterion judgment results to the fire alarm linkage controller through the station control unit, so that the fire alarm system can be utilized, repeated setting of measurement and judgment links is avoided, multi-criterion wiring cost is saved, false alarm caused by single criterion is reduced, and on-site and actual fault processing schemes and solutions are provided through an intelligent operation and maintenance function based on an intelligent power distribution technology.
The method comprises the steps that a dual-system special server cluster is set, a distributed I/O server architecture and a configuration tool are adopted, a multi-server architecture is adopted, two servers are mutually hot standby redundant and are symmetrically arranged, power control, energy efficiency statistics and power quality management work of a power transformation and distribution system in a 50% region are respectively completed at ordinary times, and when a main server fails, the other main server takes over 100% of management work; the communication optical fiber adopts a ring network type wiring mode; and configuring the UPS, and defining the power supply load grade as the highest load grade configuration of the project. The stability and the reliability of the system are fundamentally ensured.
By enhancing the edge calculation function of the station control unit, the electrical parameters of each loop of the transformer substation are locally acquired, a large number of calculation tasks are marginalized, the aging analysis of power supply and distribution equipment, post-fault analysis, power supply recovery guidance and other complex calculation work are quickly processed on site through an edge calculation technology, only the analysis and judgment results are quickly uploaded to a server host through a protocol network, and the server host only carries out operation and maintenance work such as fault positioning, dispatching management and the like according to the results, so that the communication bandwidth and the server pressure are greatly reduced.
In conclusion, the invention provides a comprehensive electrical monitoring system, which integrates the functions of the traditional power monitoring system, the electrical fire monitoring system, the fire-fighting equipment power supply monitoring system, the building intelligent operation and maintenance system and the building energy consumption monitoring system, avoids the problems of repeated monitoring and wiring of a power distribution system, saves the cost, simplifies the network, integrates the reporting criteria of each system, and eliminates the problem that the criterion is single and is easy to cause false reporting, so the invention has wide application prospect.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. An integrated electrical monitoring system, comprising: the system comprises a central substation communication machine room and substations, wherein a plurality of substations are connected in a ring network and then are connected to the central substation communication machine room in a network connection manner;
the central substation communication machine room is used for monitoring, controlling and managing the substations in the ring network;
a server and a workstation are arranged in the central substation communication machine room;
a station control unit, a wire inlet cabinet, a feeder cabinet and a substation switch are arranged in the substation;
the station control unit is used for locally acquiring electrical parameters of each loop in the substation, processing aging analysis, post-fault analysis and power supply recovery guidance operation of power supply and distribution equipment, and uploading analysis and judgment results to a server and a workstation of a central substation communication machine room through a network;
the station control unit carries out equipment operation and power supply and distribution equipment state data analysis according to state trends and system database experiences according to field acquisition information, optimizes system protection fixed value setting, finds equipment operation abnormal information and fault information, judges the health condition of the power supply and distribution equipment, gives specific operation and maintenance guidance, intelligently finishes asset operation condition evaluation of the power supply and distribution system, accurately formulates an operation and maintenance strategy, finishes complex operation work on site, only quickly uploads analysis and judgment results to a system host through a protocol network, and the host only carries out operation and maintenance work such as fault positioning, order dispatching management and the like according to the results;
still be equipped with intelligent instrument, intelligent circuit breaker, electric fire control monitoring detector, fire control power supply monitoring detector in the electric substation, intelligent instrument is used for monitoring each return circuit electrical parameter, intelligent circuit breaker is used for uploading the health status of fire control distribution loop circuit ware, electric fire control monitoring detector is used for the electric fire control of feeder cabinet to survey, fire control power supply monitoring detector is used for gathering and uploads electric substation fire control equipment parameter information, intelligent instrument, intelligent circuit breaker, electric fire control monitoring detector set up respectively in inlet wire cabinet and each in the feeder cabinet, fire control power supply monitoring detector sets up in the distribution room of electric substation, intelligent instrument includes: the system comprises a wireless electric energy measuring meter, a full-electric-quantity power meter with a communication function, an electric energy quality meter, an electric power parameter measuring meter and a three-phase electric energy meter;
the intelligent instrument is connected to a substation switch through a network after the communication management machine is centralized, the intelligent circuit breaker, the electric fire monitoring detector and the fire-fighting power supply monitoring detector are respectively connected to the substation switch through the network, the station control unit is connected to the substation switch through the network, and the substation switch is connected to a server and a work station in a central substation communication machine room through the network.
2. An integrated electrical monitoring system according to claim 1, wherein the electrical fire monitoring detector comprises: residual current transformer, temperature sensor, trouble arc detector, each return circuit electrical parameter of intelligent instrument control includes: the intelligent instrument is used for acquiring and uploading real-time electrical parameters of the fire protection power distribution circuit.
3. The integrated electrical monitoring system of claim 1, wherein the electrical parameters monitored by the fire power monitoring probe include: the special bus three-phase alternating-current voltage of the main and standby equipment power supplies, the tail end fire fighting equipment and the bus voltage of the power supply box of the especially important equipment.
4. The integrated electrical monitoring system of claim 1, wherein the electrical parameters monitored by the smart circuit breaker comprise: and the intelligent circuit breaker uploads the health condition of the circuit device of the fire protection power distribution circuit.
5. The integrated electrical monitoring system according to claim 1, wherein a collector, a UPS module, an EPS module, and an intelligent lightning protection monitoring module are further disposed in the substation, and the collector, the UPS module, the EPS module, and the intelligent lightning protection monitoring module are all connected to a substation switch through a network.
6. The integrated electrical monitoring system of claim 1, wherein the station control unit is further configured to display distribution assets, equipment ledger inquiries, operation and maintenance history inquiries, dynamic display of high and low voltage distribution system diagrams, and equipment information manual retrieval of the local substation.
7. The integrated electrical monitoring system of claim 1, wherein the servers are dual system dedicated server clusters, the servers are distributed I/O server architecture and configuration tool, multi-server architecture, two servers are mutually hot standby redundant and symmetrically arranged.
8. The integrated electrical monitoring system according to claim 1, wherein a large monitoring screen is further disposed in the central substation communication room, and the large monitoring screen is electrically connected to the workstation.
9. The integrated electrical monitoring system of claim 1, wherein the smart circuit breaker is connected to a substation switch via a wireless network.
10. The integrated electrical monitoring system according to claim 1, wherein a compensation cabinet and a filter cabinet are further arranged in the substation, sensors are arranged in the compensation cabinet and the filter cabinet, and the sensor network is connected to a substation switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211023963.4A CN115356975A (en) | 2022-08-24 | 2022-08-24 | Comprehensive electrical monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211023963.4A CN115356975A (en) | 2022-08-24 | 2022-08-24 | Comprehensive electrical monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115356975A true CN115356975A (en) | 2022-11-18 |
Family
ID=84004886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211023963.4A Pending CN115356975A (en) | 2022-08-24 | 2022-08-24 | Comprehensive electrical monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115356975A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115808643A (en) * | 2023-02-06 | 2023-03-17 | 北京瑞阳伟业科技有限公司 | Regulator cubicle function test platform with real-time data acquisition |
| CN115833362A (en) * | 2023-02-02 | 2023-03-21 | 樊氏科技发展股份有限公司 | Management and control system is synthesized to looped netowrk cabinet UPS power |
| CN115842402A (en) * | 2022-11-21 | 2023-03-24 | 昆山市城建发展建筑设计院有限公司 | Emergency power distribution system for factory building |
-
2022
- 2022-08-24 CN CN202211023963.4A patent/CN115356975A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115842402A (en) * | 2022-11-21 | 2023-03-24 | 昆山市城建发展建筑设计院有限公司 | Emergency power distribution system for factory building |
| CN115833362A (en) * | 2023-02-02 | 2023-03-21 | 樊氏科技发展股份有限公司 | Management and control system is synthesized to looped netowrk cabinet UPS power |
| CN115833362B (en) * | 2023-02-02 | 2023-06-09 | 樊氏科技发展股份有限公司 | Ring main unit UPS power supply comprehensive management and control system |
| CN115808643A (en) * | 2023-02-06 | 2023-03-17 | 北京瑞阳伟业科技有限公司 | Regulator cubicle function test platform with real-time data acquisition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113904443B (en) | On-site substation equipment monitoring and early warning system with multi-dimensional space visualization | |
| CN109742862B (en) | Remote control system for safe power utilization | |
| CN110071579A (en) | Power grid power supply based on ubiquitous electric power Internet of Things ensures and intelligent managing and control system | |
| CN115356975A (en) | Comprehensive electrical monitoring system | |
| WO2021217695A1 (en) | Smart data collection and sorting system for smart factory framework-based power supply and distribution grid | |
| CN109787363B (en) | Safe power utilization system based on voice module | |
| CN111596171A (en) | Intelligent distribution network fault diagnosis and positioning integrated system under artificial intelligence deep learning | |
| CN104092310B (en) | A kind of intelligent power distribution monitoring and energy management system backstage | |
| CN107863824A (en) | Distribute-electricity transformer district intelligence managing and control system based on the optimization of load Intelligent cluster | |
| CN103065268A (en) | System for optimization, integration and intelligent analysis of operating data of converting station | |
| CN209267271U (en) | A distribution automation system | |
| CN107063337A (en) | Power equipment acquisition device and control system | |
| CN106504115A (en) | Water power production real-time information processing system and method based on mass data | |
| CN106655516A (en) | Power supply equipment collection device and remote fault diagnosis system | |
| CN106340963B (en) | A kind of power distribution room intelligence generation dimension monitoring system | |
| CN110970862A (en) | Intelligent circuit breaker based on edge analysis technology and setting method | |
| CN114139742A (en) | Power distribution network management and control system and management and control method | |
| CN108256770A (en) | Photo-voltaic power generation station O＆M managing and control system based on mobile application | |
| CN115995880A (en) | A method and system for comprehensive monitoring and analysis of multi-dimensional status of distribution automation terminals | |
| CN110837027A (en) | Auxiliary decision-making method and system based on the extraction of key information from the dispatcher in the case of power grid faults | |
| CN114188941A (en) | A station area intelligent fusion terminal system and its application method | |
| CN114142614A (en) | Highway power distribution room intelligent operation and maintenance management system based on SD-WAN network | |
| CN218158802U (en) | Comprehensive electrical monitoring system | |
| CN112698133A (en) | Voltage quality comprehensive evaluation method based on big data | |
| CN114256985B (en) | Low-voltage power distribution switch system based on Internet of things |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |