CN108896868B

CN108896868B - System and method for realizing on-line monitoring in a ready-to-use manner

Info

Publication number: CN108896868B
Application number: CN201810643914.8A
Authority: CN
Inventors: 杨晓杰; 何兴平; 李锐; 陈宏�; 杨成亮; 朱赟; 徐文霞; 夏海飞; 吴海霞; 王国辉; 唐良富; 李朝津; 戴思源; 杨秀凡; 陈凤涛; 鲍立香; 许星杰; 杨奎; 敬炳侠; 王坤
Original assignee: Zhaotong Power Supply Bureau of Yunnan Power Grid Co Ltd
Current assignee: Zhaotong Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2020-01-03
Anticipated expiration: 2038-06-21
Also published as: CN108896868A

Abstract

The invention provides a system and a method for realizing on-line monitoring in a ready-to-use mode, wherein the system comprises an on-line monitoring node, a wireless communication gateway and a control software system; the control software system is used for performing connection security verification on each online monitoring node through the wireless communication gateway by adopting a dynamic encryption method, and comprises a parameter key and an instruction key which are acquired, so that the security of data communication is improved. The on-line monitoring node comprises a collector, a data conversion module, a preposed cache, a processor, a communication cache, a wireless transmission module, a battery system and a reset circuit. Has the advantages that: the health conditions of the power equipment in the transformer substation and the power supply area can be monitored in real time, and the on-line monitoring can be realized, so that the on-line monitoring can be realized; through building information acquisition equipment on site fast, realize power equipment's remote real time monitoring, improve system operating efficiency, reduce manpower and materials, save the cost, have arrange advantages such as fast, the system network deployment is nimble, low-cost, low-power consumption, scalability are strong.

Description

System and method for realizing on-line monitoring in a ready-to-use manner

Technical Field

The invention belongs to the technical field of on-line monitoring of equipment, and particularly relates to a system and a method for realizing on-line monitoring in a ready-to-use mode.

Background

The safe operation of the power system, which is a fundamental industry of the economy and the livelihood, is very important, wherein the safe operation problem of the power equipment is an important aspect influencing the safe and stable operation of the power system. For a long time, the operation and maintenance of important power equipment such as transformers in substations in power systems mainly adopt modes such as post-repair, preventive repair, planned repair, and the like, but these repair modes have some inevitable disadvantages.

For guaranteeing the normal operation of power equipment in the transformer substation, the online monitoring system of the transformer substation appears in the prior art, and the main adopted mode is as follows: the on-line monitoring nodes are pre-installed at the positions of important power equipment in the station and are in wired connection with the network in the station, so that the health state of the power equipment is monitored. However, this approach mainly has the following problems: (1) due to the wired communication mode, when the online monitoring nodes are installed and deployed, power is required to be cut off for installation, so that the normal operation of other online monitoring nodes is influenced, and the monitoring effect is reduced; (2) the online monitoring node arrangement process is complex, and the rapid deployment of various types of online monitoring nodes cannot be carried out; (3) the online monitoring node has a single monitoring parameter type, limited collection of suspected fault information of the equipment in the station and single analysis means, and is not beneficial to analysis and processing of faults.

Therefore, the traditional transformer substation online monitoring system cannot meet the monitoring requirements under the conditions of daily inspection, overhaul, power conservation, emergency monitoring, suspected fault troubleshooting and the like of the transformer substation; the long-time and automatic state monitoring can not be realized, and the risk of accidents is not reduced and the working efficiency is improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a system and a method for realizing on-line monitoring in a ready-to-use mode, which can effectively solve the problems.

The technical scheme adopted by the invention is as follows:

the invention provides a system for realizing on-line monitoring in a ready-to-use mode, which comprises an on-line monitoring node, a wireless communication gateway and a control software system, wherein the on-line monitoring node is connected with the wireless communication gateway;

the online monitoring nodes comprise online monitoring nodes of multiple independent data acquisition types and are dispersedly arranged at monitored points; the online monitoring nodes are used online monitoring nodes, and each online monitoring node has independent data acquisition, data analysis and communication functions;

the wireless communication gateway adopts TG-Inwiss communication networking technology to realize wireless networking monitoring of electric power and realize access of multi-band and multi-address online monitoring nodes;

the control software system is used for performing connection safety verification on each online monitoring node by adopting a dynamic encryption method through the wireless communication gateway, and after the verification is passed, effective connection is established with the online monitoring nodes to realize the instant access of the online monitoring nodes; and then, the control software system configures the working parameters of each online monitoring node, receives the acquired data uploaded by each online monitoring node, and performs analysis, data display and data monitoring and early warning on the acquired data.

Preferably, the online monitoring node comprises a collector, a data conversion module, a pre-cache, a processor, a communication cache, a wireless transmission module, a battery system and a reset circuit; the collector is used for collecting original monitoring signals and transmitting the original monitoring signals to the data conversion module; the data conversion module is used for performing signal conditioning and data conversion on the original monitoring signals, then sampling according to a preset sampling rate, and stacking the sampled monitoring signals in the pre-cache in sequence; the processor is used for reading data from the preposed cache according to the sampling rate issued by the control software system, carrying out operation processing and encryption processing, and storing the encrypted data into the communication cache; the wireless transmission module is used for calculating the channel occupation condition and the signal intensity and sending the data in the communication cache to the wireless communication gateway according to the proper communication speed.

Preferably, the collector comprises the following types of collectors: the device comprises a voltage collector, a current collector, an electric energy quality collector, a temperature collector, a humidity collector, a harmful gas collector, a noise collector, an infrared collector, an ultraviolet collector and an ice coating thickness collector.

Preferably, the wireless communication gateway adopts a forward error correction coding technology to improve the transmission reliability of communication data; the wireless communication gateway communicates with the control software system in an Ethernet, USB or WiFi mode.

Preferably, the control software system is used for realizing the functions of software system configuration, data display, data analysis, data monitoring and early warning and data management; the control software system includes: the system comprises a system configuration subsystem, an acquisition subsystem, a monitoring configuration subsystem, a monitoring subsystem and a management subsystem;

the system configuration subsystem comprises a system configuration module, an association setting module and a data management module;

the system configuration module is used for configuring basic parameters of each online monitoring node, and comprises: partitioning of a monitoring area, transformer substation attributes, geographic positions of online monitoring nodes and transformer substations to which the online monitoring nodes belong;

the association setting module is used for defining the association relation between an analog quantity acquisition channel and a switching value acquisition channel of the control software and the online monitoring node;

the data management module is used for generating a system configuration installation report, importing and backing up system configuration data and sorting the data collected by the online monitoring nodes;

the acquisition subsystem is used for realizing the functions of data acquisition, data analysis, data storage and data browsing of the online monitoring nodes; the acquisition subsystem comprises a communication port, an online monitoring node acquisition module, an online monitoring node data buffer area, a data analysis module, an upper layer communication module, a local database and an operation and maintenance personnel interface module;

the communication port and online monitoring node acquisition module is used for performing concurrent access on a plurality of communication ports by utilizing a multithreading technology to finish rapid polling acquisition on online monitoring nodes;

the online monitoring node data buffer area is used for storing real-time data uploaded by the online monitoring node in real time, and ensuring the real-time property of data browsing and the rapid report of an alarm;

the data analysis module is used for analyzing the running state of the control software system and the state of each online monitoring node, so that the long-term stable running of the system is ensured;

the upper layer communication module is used for accessing the whole monitoring system through TCP/IP; transmitting the alarm data, the change data, the statistical data and the real-time data to a monitoring subsystem or a local database; the command of the monitoring subsystem is transmitted to the acquisition subsystem through the upper layer communication module;

the communication port, the online monitoring node and the acquisition channel configured by the acquisition subsystem of the local database are all stored in different data tables in the local database; the local database automatically deletes and maintains the data table according to the data needing to be stored for a certain time after configuration;

the operation and maintenance personnel interface module is used for providing a real-time query interface and a historical query interface of monitoring data, providing data of any acquisition channel and providing acquisition information of the online monitoring node, wherein the acquisition information comprises acquisition times and acquisition failure times;

the monitoring configuration subsystem is used for configuring a hierarchical visual graphic monitoring interface for the system and comprises a monitoring element configuration module, an interface element configuration module and a topological structure configuration module;

the configuration module of the monitoring element is used for realizing the configuration of areas and local stations, the configuration of logic groups, the configuration of equipment and the configuration of parameters, wherein the parameters use component configurations, including humidity, temperature, SF6 and switch positions, thereby generating a monitoring level of a monitoring subsystem;

the interface element configuration module is used for providing an application system interface friendly to image-text element configuration, and specifically comprises: configuring texts, lines, pictures and three-dimensional lines, panels and grouping frames;

the topological structure configuration module is used for realizing the configuration of the system topological structure;

the monitoring subsystem is used for displaying the operation parameters of the monitored equipment in the form of a plurality of graphs, lists, characters and simulation controls in front of operation and maintenance personnel; therefore, operation and maintenance personnel of the monitoring system can monitor the running state of the equipment in real time, prompt the alarm of the equipment in time and rapidly remotely control the equipment; the monitoring subsystem also has the functions of a quick browsing mode, alarm presetting, on-line alarm and information recording and playback system; the monitoring subsystem comprises a monitoring interface module, a control equipment module, an operation equipment module, an online adjusting equipment parameter module and an alarm processing module;

the monitoring interface module is used for providing parameter operation conditions of the operation and maintenance personnel for browsing the equipment in a plurality of display modes in real time, so that the operation and maintenance personnel can conveniently know the operation conditions of the monitoring equipment on the whole; when the icon of the central monitoring area is clicked, entering the equipment monitoring area; in the equipment monitoring area, displaying data sent back by the online monitoring nodes in real time, and forming a curve graph; on-line monitoring node data displayed in the modes of characters, scales, time periods and curves are arranged around the simulation graph of the monitoring equipment; when more data need to be browsed on the same interface, a left button is right clicked on a mouse to select to add an online monitoring acquisition node, and an online monitoring acquisition node browsing window can be popped up to select;

the control equipment module is used for providing access and naming functions for operation and maintenance personnel, and the operation and maintenance personnel set access names and alarm preset values for the configured online monitoring nodes;

the operation equipment module is used for automatically recording online monitoring data, clicking alarm information by using a right button of a mouse when the equipment gives an alarm, and displaying the name, the overrun value and the overrun moment information of the alarm equipment;

the on-line adjusting device parameter module is used for retrieving the configuration information of each acquisition channel on the remote station, modifying the configuration information of the device parameters on the monitoring platform and further adjusting the device parameters on line;

the alarm processing module realizes the functions of automatic pop-up of an alarm window, alarm elimination, alarm light prompt, alarm sound prompt and alarm response.

The management subsystem adopts a Windows XP operating system, uses a CLIENT/SERVER development tool, and is matched with a control software system to realize various management and maintenance works of the intelligent auxiliary control system, and comprises a system management module, an alarm management module and a report management module;

the system management module is used for the safety management of the system and comprises three parts of operation and maintenance personnel management, authority management and system log query; in the management of the operation and maintenance personnel, new operation and maintenance personnel can be registered, the effective time of the operation and maintenance personnel is defined, the authority of the operation and maintenance personnel is distributed, and operation and maintenance personnel groups are divided; in the authority management, the method is used for setting the authority level and decomposing the authority; the system log query is used for querying and reviewing system historical data;

the alarm management module is used for shielding setting, time delay setting, alarm record query, alarm statistical analysis and alarm time-sharing analysis of alarms; the method is particularly used for comparative analysis of alarm amount among transformer substations, alarm statistics of different types of different equipment at different times, alarm trend analysis of certain equipment and alarm trend analysis of certain type of equipment;

the report management module is used for various report configurations and the statistics and printing work of the reports.

The invention also provides a method for realizing the on-line monitoring based on the on-line monitoring system, which comprises the following steps:

step 1, a software control system configures a topological structure of an overall online monitoring system; for the online monitoring nodes which are never accessed, a control software system carries out initialization configuration on basic parameters of the online monitoring nodes, and on one hand, the control software system stores the basic parameters of the online monitoring nodes; on the other hand, the control software system stores the basic parameters into the corresponding online monitoring nodes; the basic parameters comprise an online monitoring node address, a data acquisition type, a data acquisition frequency, a communication frequency, a data uploading mode, frame header information and a time mark initial value;

step 2, the control software system scans the working frequency band of the online monitoring node by controlling the wireless communication gateway, when a certain online monitoring node waiting to be added is scanned, the control software system adopts a dynamic encryption method to carry out security verification on the online monitoring node, if the online monitoring node passes the verification, a communication link is established with the online monitoring node, and the instant security access of the online monitoring node is realized; otherwise, refusing the joining of the online monitoring node;

the security verification method comprises a method for performing security verification by adopting an acquisition parameter key and a method for performing security verification by adopting an instruction key;

the method for performing security verification by adopting the acquisition parameter key comprises the following steps:

step 2.1, pre-storing basic parameters by the online monitoring node; the online monitoring node acquires real-time monitoring data with a certain length in real time according to the configured data acquisition frequency; the online monitoring node processes the real-time monitoring data, and extracts a plurality of characteristic data from the real-time monitoring data according to the sampling sequence to form an acquisition parameter key;

then, the online monitoring node sends the acquisition parameter key to the control software system;

step 2.2, the control software system analyzes the acquisition parameter key and identifies the data acquisition type of the online monitoring node;

step 2.3, then, the control software system compares whether the data acquisition type identified in the step 2.2 is consistent with the data acquisition type corresponding to the pre-stored online monitoring node, and if so, the control software system passes the safety verification; otherwise, refusing to pass the security verification;

the method for performing security verification by adopting the instruction key comprises the following steps:

step 2.1, the control software system determines whether the online monitoring node is accessed for the first time, and if the online monitoring node is accessed for the first time, the step 2.2 is executed; if the access is not the first access, executing the step 2.3;

step 2.2, the on-line monitoring node obtains data acquisition frequency, communication frequency, data uploading mode, on-line monitoring node address, frame header information and time mark initial value by reading the basic parameters; then, the online monitoring node combines the data acquisition frequency, the communication frequency and the data uploading mode to form inherent parameters; combining an online monitoring node address, frame header information and a time mark initial value to form a protocol message control word;

the online monitoring node combines the inherent parameters and the protocol message control words to form an instruction key and sends the instruction key to the control software system;

the control software system compares each parameter in the instruction key with the related parameter corresponding to the locally stored online monitoring node, and if the two parameters are consistent, the safety verification is passed; otherwise, refusing to pass the security verification;

2.3, for the online monitoring nodes which are not accessed for the first time, the online monitoring nodes and the control software system store the latest basic configuration parameters for configuring the online monitoring nodes and the latest monitoring data; the basic configuration parameters comprise an online monitoring node address, a data acquisition type, data acquisition frequency, communication frequency, a data uploading mode and frame header information; the online monitoring node and the control software system both analyze the latest monitoring data and respectively extract latest sampling time scale information;

then, the on-line monitoring node obtains data acquisition frequency, communication frequency, data uploading mode, on-line monitoring node address and frame header information by reading the basic configuration parameters; then, the online monitoring node combines the data acquisition frequency, the communication frequency and the data uploading mode to form inherent parameters; combining the online monitoring node address, the frame header information and the latest sampling time mark information extracted by the online monitoring node address, the frame header information and the frame header information to form a protocol message control word;

the control software system compares each parameter in the instruction key, the locally stored basic configuration parameter of the online monitoring node and the latest sampling time scale information extracted by the control software system, and if the parameters are consistent with the basic configuration parameter of the online monitoring node, the control software system passes safety verification; otherwise, refusing to pass the security verification;

and 3, for the online monitoring nodes passing the safety verification, performing data interaction with the control software system in a dormancy interception mode, wherein the specific process is as follows:

the on-line monitoring node comprises a collector, a data conversion module, a preposed cache, a processor, a communication cache, a wireless transmission module, a battery system and a reset circuit; the on-line monitoring node monitors whether a control command or a data request command issued by the control software system exists in real time, and if the control command or the data request command is not monitored, the on-line monitoring node is in a dormant monitoring mode, so that the processor and the wireless transmission module are in a dormant state; if the on-line monitoring node is sensed, the on-line monitoring node immediately enters a working mode, wakes up the processor and the wireless transmission module, and executes a command issued by the control software system; after the command issued by the control software system is executed, if the specified time is reached and no new command is issued, the online monitoring node is switched to the dormant state.

The system and the method for realizing the on-line monitoring in a ready-to-use mode have the following advantages that:

the system and the method for realizing the on-line monitoring of the ready-to-use type can monitor the health condition of the power equipment in the transformer substation and the power supply area in real time, and the monitoring node equipment can be installed without power failure or power failure in a short time, so that the on-line monitoring and the ready-to-use are realized; through setting up information acquisition equipment at the scene fast, realize power equipment's remote real time monitoring, be favorable to the electric power personnel to observe the system unusual at any time, in time react, reduce or avoid because the loss that the unusual operation of system probably caused, improve system operating efficiency, reduce manpower and materials, save the cost, have arrange fast, system networking is nimble, low cost, low-power consumption, scalability advantage such as strong.

Drawings

FIG. 1 is an overall architecture diagram of a system for implementing on-line monitoring in a ready-to-use manner according to the present invention;

FIG. 2 is a schematic structural diagram of an online monitoring node according to the present invention;

fig. 3 is a schematic structural diagram of a control software system provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative efforts shall fall within the protection scope of the present invention.

The invention relates to a method and a system for realizing on-line monitoring in a ready-to-use mode, which relate to the acquisition and monitoring of information of a transformer substation and a transformer substation area and have the following characteristics:

(1) because the online monitoring node carries out information interaction through the wireless communication gateway and the control software system, and the online monitoring node adopts a wireless deployment mode, the online monitoring node can be installed without power failure or power failure in a short time, and the online monitoring can be installed and used immediately; by quickly setting up the on-line monitoring node on the site, the remote real-time monitoring of the power equipment can be realized, so that monitoring personnel can observe the system abnormality at any time and respond in time, the loss possibly caused by the abnormal operation of the system is reduced or avoided, the system operation efficiency is improved, the manpower and material resources are reduced, and the cost is saved;

(2) the dynamic encryption method is suitable for wireless on-line monitoring of electric power, so that the safety of data is effectively guaranteed.

(3) The health conditions of the power equipment in the transformer substation and the power supply area can be monitored in real time, and the on-line monitoring can be realized, so that the on-line monitoring can be realized;

(4) the method can rapidly deploy various types of online monitoring nodes, and has the advantages of high deployment speed, flexible system networking, low cost, low power consumption, strong expandability and the like.

Referring to fig. 1, the system for implementing on-line monitoring in a ready-to-use manner includes an on-line monitoring node, a wireless communication gateway and a control software system;

(1) on-line monitoring node

The online monitoring node is used for collecting power information and has the functions of independent collection, data analysis and wireless communication; the online monitoring nodes are internally provided with power supplies, and external power supplies are not needed; the outdoor online monitoring node needs to adopt an anti-corrosion sealing design; wireless communication frequency 433 MHz; and the power consumption is reduced by adopting a wireless air awakening and dormancy interception mode.

Specifically, the online monitoring nodes comprise online monitoring nodes of multiple independent data acquisition types, are dispersedly arranged at monitored points, and acquire information of the power equipment. Each on-line monitoring node is connected with a different type of collector, such as voltage, current, power quality, temperature, humidity, harmful gas, noise, infrared, ultraviolet, icing thickness, 485 interface, position signal, power equipment interface data information and the like. The online monitoring node can also collect online monitoring node data produced by other manufacturers. When the intelligent power information acquisition system is used, any type and any number of online monitoring nodes can be connected to realize different power information acquisition functions. The online monitoring nodes are installed and used immediately, and each online monitoring node has independent data acquisition, data analysis and communication functions.

The on-line monitoring node reduces power consumption by adopting a dormancy monitoring mode and comprises a collector, a data conversion module, a preposed cache, a processor, a communication cache, a wireless transmission module, a battery system and a reset circuit; the collector is used for collecting original monitoring signals and transmitting the original monitoring signals to the data conversion module; the data conversion module is used for performing signal conditioning and data conversion on the original monitoring signals, sampling according to a preset sampling rate, and stacking the sampled monitoring signals in sequence to be stored in a preposed cache; the processor is used for reading data from the preposed cache according to the sampling rate issued by the control software system, carrying out operation processing and encryption processing, and storing the encrypted data into the communication cache; the wireless transmission module is used for calculating the channel occupation condition and the signal intensity and sending the data in the communication cache to the wireless communication gateway according to the proper communication speed.

(2) Wireless communication gateway

The wireless communication adopts a star network structure to realize the bidirectional interaction between each online monitoring node and the control software system, the wireless communication gateway can be compatible with online monitoring nodes with various types of monitoring data and multiple frequency bands, the wireless communication gateway adopts a TG-Inwicos communication networking technology to realize the wireless networking monitoring of electric power in a larger range and realize the access of online monitoring nodes with multiple frequency bands and multiple addresses.

The wireless communication gateway adopts a forward error correction coding technology to improve the transmission reliability of communication data; the wireless communication gateway communicates with the control software system through Ethernet, USB, WiFi and other modes.

The system adopts a star network structure, and the control software system carries out bidirectional information interaction with each online monitoring node through a wireless communication gateway.

(3) Control software system

The control software system is installed on the server, communication control with the online monitoring node is achieved through the wireless communication gateway, and the control software system adopts a more flat access mode to monitor the access condition of the online monitoring node in real time. The control software system has the functions of data recording, management, early warning setting, report generation and the like; the monitoring system comprises a software monitoring interface and has the functions of editing the graph of an operation interface, and editing the data type, the upper and lower alarm limits and the display value of each monitoring node.

The control software system is used for performing connection safety verification on each online monitoring node by adopting a dynamic encryption method through the wireless communication gateway, and after the verification is passed, effective connection is established with the online monitoring nodes to realize the instant access of the online monitoring nodes; and then, the control software system configures the working parameters of each online monitoring node, receives the acquired data uploaded by each online monitoring node, and analyzes, displays and monitors the acquired data.

The control software system scans the working frequency band of the online monitoring node, such as the frequency band from 433MHz to 480MHz, through the wireless communication gateway, after the online monitoring node is found, the control software system verifies the online monitoring node through the dynamic encryption algorithm (collecting a parameter key and an instruction key) through the wireless communication gateway, and establishes a communication link after the verification is passed, thereby realizing the instant access of the online monitoring node.

The control software system is connected with the online monitoring node through the wireless communication gateway through the dynamic encryption method (acquiring a parameter key and a command key) for safety verification, and the safety of data transmission can be effectively ensured. The dynamic encryption method of the power system comprises a parameter collection key generation method and an instruction key generation method. The acquisition parameter key is dynamically generated by data acquired by the online monitoring node in real time, and the online monitoring node extracts the characteristic value of the real-time monitoring data to generate the acquisition parameter key for controlling the software system. The instruction key is generated by an internal inherent instruction and a protocol message control word of the online monitoring node, and the latest internal inherent instruction and the message control word are extracted by the online monitoring node and are sequentially mixed to generate the instruction key for controlling the software system. It should be emphasized that the power wireless online monitoring encryption method provided by the invention can be applied to other wireless communication modes such as WiFi, Zigbee, GPRS and the like.

The control software system is used for realizing the functions of software system configuration, data display, data analysis, data monitoring and early warning and data management; the control software system includes: the system comprises a system configuration subsystem, an acquisition subsystem, a monitoring configuration subsystem, a monitoring subsystem and a management subsystem;

the system configuration subsystem mainly has the functions of configuring various basic parameter information of a center, a data acquisition node and a communication port and mutual correlation information. The system is divided according to system functions and comprises a system configuration module, an association setting module and a data management module;

the system configuration module is used for configuring basic parameters of each online monitoring node, and comprises the following steps: partitioning of a monitoring area, transformer substation attributes, geographic positions of online monitoring nodes and transformer substations to which the online monitoring nodes belong; the system configuration module is also used for configuring the partitions and the central stations of the system, configuring each communication port and module, configuring each template channel, configuring the equipment and the like. The operation and maintenance personnel can add various basic data information into the whole system through the operation of the part.

The correlation setting module is used for defining the correlation relation between an analog quantity acquisition channel and a switching value acquisition channel of the control software and the online monitoring node;

the acquisition subsystem is used for realizing the functions of data acquisition, data analysis, data storage and data browsing of the online monitoring nodes; the acquisition subsystem is composed of a plurality of functional modules which assist each other to realize the acquisition, analysis, forwarding and storage of data, and comprises a communication port, an online monitoring node acquisition module, an online monitoring node data buffer area, a data analysis module, an upper layer communication module, a local database and an operation and maintenance personnel interface module;

the communication port and online monitoring node acquisition module is used for performing concurrent access on a plurality of communication ports by utilizing a multithreading technology to finish rapid polling acquisition on online monitoring nodes; the part makes full use of the concurrency of the operating system to realize the rapid polling collection of the multi-path modules.

The on-line monitoring node data buffer area is used for storing real-time data uploaded by the on-line monitoring node in real time, and ensuring the real-time property of data browsing and the rapid report of an alarm;

the data analysis module is used for analyzing the running state of the control software system and the state of each online monitoring node so as to ensure the long-term stable running of the system; rich operating parameters are provided for analysis.

The upper layer communication module is used for accessing the whole monitoring system through TCP/IP; TCP/IP can ensure the correctness, completeness and order of system data. Transmitting the alarm data, the change data, the statistical data and the real-time data to a monitoring subsystem or a local database; the command of the monitoring subsystem is transmitted to the acquisition subsystem through the upper layer communication module;

the communication port, the online monitoring node and the acquisition channel configured by the acquisition subsystem are all stored in different data tables in the local database; the local database automatically deletes and maintains the data table according to the data needing to be stored for a certain time after configuration;

and the operation and maintenance personnel interface module is used for providing a real-time query interface and a historical query interface of the monitoring data and providing data of any acquisition channel, and the operation and maintenance personnel can view any channel data. Providing acquisition information of the online monitoring node, wherein the acquisition information comprises acquisition times, acquisition failure times and the like;

the monitoring configuration subsystem is used for configuring a hierarchical visual graphic monitoring interface for the system, and comprises a monitoring element configuration module, an interface element configuration module and a topological structure configuration module according to functional division;

the configuration module of the monitoring elements is used for realizing the configuration of areas and local stations, the configuration of logic groups, the configuration of equipment and the configuration of parameters, wherein the parameters use component configurations comprising humidity, temperature, SF6 and switch positions, thereby generating a monitoring level of the monitoring subsystem;

the monitoring subsystem is used for displaying the operation parameters of the monitored equipment in the form of various graphs, lists, characters and simulation controls in front of operation and maintenance personnel; therefore, operation and maintenance personnel of the monitoring system can monitor the running state of the equipment in real time, prompt the alarm of the equipment in time and rapidly remotely control the equipment; the monitoring subsystem also has the functions of a quick browsing mode, alarm presetting, on-line alarm and information recording and playback system; the monitoring subsystem comprises a monitoring interface module, a control equipment module, an operating equipment module, an online adjusting equipment parameter module and an alarm processing module;

the monitoring interface module is used for providing the parameter operation condition of the operation and maintenance personnel browsing equipment in a plurality of display modes in real time, so that the operation and maintenance personnel can conveniently know the operation condition of the monitoring equipment on the whole; when the icon of the central monitoring area is clicked, entering the equipment monitoring area; in the equipment monitoring area, displaying data sent back by the online monitoring nodes in real time, and forming a curve graph; on-line monitoring node data displayed in the modes of characters, scales, time periods and curves are arranged around the simulation graph of the monitoring equipment; when more data need to be browsed on the same interface, if operation and maintenance personnel need to browse more data on the same interface, only a left button right click mouse is needed to select to add an online monitoring acquisition node, and an online monitoring acquisition node browsing window can be popped up for selection;

and the operation equipment module is used for automatically recording online monitoring data, and operation and maintenance personnel can select to view the data in real time and browse historical data. When the equipment gives an alarm, clicking alarm information by using a right mouse button, and displaying the name, the overrun value and the overrun time information of the alarm equipment;

and the alarm processing module realizes the functions of automatic pop-up of an alarm window, alarm elimination, alarm light prompt, alarm sound prompt and alarm response.

and the report management module is used for configuring various reports and counting and printing the reports.

The invention also provides an on-line monitoring dynamic encryption method for the power system, which comprises the following steps:

step 1, a software control system configures a topological structure of an overall online monitoring system; for the online monitoring nodes which are never accessed, the control software system carries out initialization configuration on the basic parameters of the online monitoring nodes, on one hand, the control software system stores the basic parameters of the online monitoring nodes; on the other hand, the control software system stores the basic parameters into the corresponding online monitoring nodes; the basic parameters comprise an online monitoring node address, a data acquisition type, a data acquisition frequency, a communication frequency, a data uploading mode, frame header information and a time mark initial value;

step 2, the control software system scans the working frequency band of the online monitoring node by controlling the wireless communication gateway, for example, scans the frequency band from 433MHz to 480MHz, when a certain online monitoring node waiting to be added is scanned, the control software system adopts a dynamic encryption method to carry out security verification on the online monitoring node, if the certain online monitoring node passes the verification, the control software system establishes a communication link with the online monitoring node, and the instant security access of the online monitoring node is realized; otherwise, refusing the joining of the online monitoring node;

step 2.2, the control software system analyzes the collection parameter key and identifies the data collection type of the online monitoring node;

in the invention, the acquisition parameter key is dynamically generated by data acquired by the online monitoring nodes in real time, each type of online monitoring node has a unique acquisition data type, when the online monitoring nodes are put into use, an internal processor of the online monitoring nodes extracts the acquired data according to a certain period, generates characteristic values according to a certain sequence and logic relationship, and extracts data segments of the characteristic values according to an agreed mode to generate the acquisition parameter key. And the acquisition parameter type of each online monitoring node is pre-stored in the control software system, so that the control software system performs security verification based on the acquisition parameter type.

Taking a current signal as an example, the frequency is 50Hz, and a positive sine wave signal is taken as the characteristic of the current signal, the online monitoring node extracts data from the current signal acquisition node according to the frequency of 6400 points per second to generate a characteristic value, and 128 data are randomly intercepted to be taken as an acquisition parameter key. After receiving the acquisition parameter key, the control software system performs security verification according to a current signal acquisition node key verification mode, wherein the verification mode is as follows: and comparing the nth data with the (n + 64) th data, and if the absolute values are approximately equal, deducing that the acquisition parameter type is a positive sine wave signal, thereby identifying that the key is correct.

the on-line monitoring node combines the inherent parameters and the protocol message control words to form an instruction key and sends the instruction key to the control software system;

2.3, for the online monitoring nodes which are not accessed for the first time, the online monitoring nodes and the control software system store the latest basic configuration parameters for configuring the online monitoring nodes and the latest monitoring data; the basic configuration parameters comprise an online monitoring node address, a data acquisition type, data acquisition frequency, communication frequency, a data uploading mode and frame header information; the online monitoring node and the control software system analyze the latest monitoring data and respectively extract latest sampling time scale information;

then, the on-line monitoring node obtains data acquisition frequency, communication frequency, data uploading mode, on-line monitoring node address and frame header information by reading basic configuration parameters; then, the online monitoring node combines the data acquisition frequency, the communication frequency and the data uploading mode to form inherent parameters; combining the online monitoring node address, the frame header information and the latest sampling time mark information extracted by the online monitoring node address, the frame header information and the frame header information to form a protocol message control word;

the control software system compares each parameter in the instruction key, the locally stored basic configuration parameter of the online monitoring node and the latest sampling time scale information extracted by the control software system, and if the parameters are consistent with the basic configuration parameter of the online monitoring node, the control software system passes the safety verification; otherwise, refusing to pass the security verification;

the principle is as follows: the instruction key is generated by the internal intrinsic parameters of the online monitoring node and the control word of the protocol message. The intrinsic parameters are parameters of acquisition frequency, communication frequency, data uploading mode and the like of each type of online monitoring node, the parameters are parameters of the online monitoring nodes successfully configured by control system software for the last time, and the intrinsic parameters have certain randomness after the online monitoring nodes are used every time, so that the method can be used for safety verification.

The protocol message control word comprises an online monitoring node address, a time mark, a frame header and the like, each acquired data has the time mark (namely an acquisition time data field), and because the time mark is a randomness parameter, the key has randomness and can be used for safety verification.

And extracting and mixing the inherent parameters and the protocol message control words according to a certain sequence to generate an instruction key.

Meanwhile, the control software system stores the parameters and the message control words of the online monitoring node which is successfully configured for the last time, so that the same instruction key can be generated, and the correctness of the online monitoring node key can be verified in a comparison mode.

Therefore, in order to reduce power consumption, the online monitoring node is in a dormant state for most of time, the processor and the wireless transmission module are in a dormant monitoring mode at the moment, and when a control command or a data request command issued by the control software system is monitored, the online monitoring node immediately enters a working mode and executes the command issued by the control software system; after the command issued by the control software system is executed for 20 seconds, no new command is issued, and the processor and the wireless transmission module enter a sleep listening mode.

The process of collecting and sending data by the online monitoring node is as follows: after the collector in the online monitoring node collects the original signal, the signal conditioning and data conversion are carried out through the inner collector, the digital-to-analog conversion is carried out according to the sampling rate which is set in advance, and the converted data are stacked in the data cache in sequence. A processor in the online monitoring node reads data from the preposed cache according to the sampling rate issued by the control software system, performs operation processing and encryption processing, and stores the result into a communication cache corresponding to the wireless transmission module; the wireless transmission module calculates the channel occupation condition and the signal intensity and sends data to the wireless communication gateway according to the proper communication speed.

The invention provides a system and a method for realizing on-line monitoring in a ready-to-use mode. The wireless networking monitoring of the electric power in a large range can be realized through the TG-Inwicos communication networking technology, and the operators and the relay protection personnel can combine and use the online monitoring nodes according to the on-site requirements, and dispersedly arrange the on-site monitoring nodes on the problem equipment and the related equipment to obtain multi-dimensional equipment operation data in real time; the online monitoring system is provided with a control software system, and the control software system can carry out state monitoring of quick linking, alarm setting, combined configuration and the like, so that the success rate of troubleshooting is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.

Claims

1. A on-line monitoring implementation method of on-line monitoring implementation system of on-line type of instant use, wherein, the on-line monitoring implementation system of the on-line type of instant use includes monitoring node, wireless communication gateway and control software system online;

the online monitoring nodes comprise online monitoring nodes of multiple independent data acquisition types and are dispersedly arranged at monitored points; the online monitoring nodes are ready-to-use online monitoring nodes, and each online monitoring node has independent functions of data acquisition, data analysis and communication;

the online monitoring node is used for collecting power information and has the functions of independent collection, data analysis and wireless communication; the online monitoring nodes are internally provided with power supplies, and external power supplies are not needed; the outdoor online monitoring node needs to adopt an anti-corrosion sealing design; wireless communication frequency 433 MHz; the power consumption is reduced by adopting a wireless air awakening and dormancy monitoring mode;

specifically, the online monitoring nodes comprise online monitoring nodes of multiple independent data acquisition types, are dispersedly arranged at monitored points, and acquire information of the power equipment; each on-line monitoring node is connected with a different type of collector in a hanging mode, wherein the different types of collectors comprise voltage, current, power quality, temperature, humidity, harmful gas, noise, infrared, ultraviolet, icing thickness, 485 interfaces, position signals and power equipment interface data information; the online monitoring node collects online monitoring node data; when in use, the on-line monitoring node can be connected to realize different electric power information acquisition functions; the online monitoring nodes are ready-to-use online monitoring nodes, and each online monitoring node has independent functions of data acquisition, data analysis and communication;

the wireless communication adopts a star network structure to realize the bidirectional interaction between each online monitoring node and the control software system, the wireless communication gateway can be compatible with online monitoring nodes with various types of monitoring data and multiple frequency bands, the wireless communication gateway adopts a TG-Inwicos communication networking technology to realize the wireless networking monitoring of electric power in a larger range and realize the access of online monitoring nodes with multiple frequency bands and multiple addresses;

the system adopts a star network structure, and a control software system carries out bidirectional information interaction with each online monitoring node through a wireless communication gateway;

the control software system is used for performing connection safety verification on each online monitoring node by adopting a dynamic encryption method through the wireless communication gateway, and after the verification is passed, effective connection is established with the online monitoring nodes to realize the instant access of the online monitoring nodes; then, the control software system configures working parameters of each online monitoring node, receives collected data uploaded by each online monitoring node, and performs analysis, data display and data monitoring and early warning on the collected data;

the control software system is installed on the server, realizes communication control with the online monitoring node through the wireless communication gateway, and monitors the access condition of the online monitoring node in real time by adopting a more flat access mode; the control software system has the functions of data recording, management, early warning setting and report generation; the system comprises a software monitoring interface, a data type, alarm upper and lower limits and display value functions, wherein the software monitoring interface has the functions of editing the graph of an operation interface and editing the data type, the alarm upper and lower limits and the display value of each monitoring node;

the control software system is used for performing connection safety verification on each online monitoring node by adopting a dynamic encryption method through the wireless communication gateway, and after the verification is passed, effective connection is established with the online monitoring nodes to realize the instant access of the online monitoring nodes; then, the control software system configures the working parameters of each online monitoring node, receives the acquired data uploaded by each online monitoring node, and performs analysis, data display and data monitoring and early warning on the acquired data;

the control software system scans the working frequency band of the online monitoring node from 433MHz to 480MHz through the wireless communication gateway, after the online monitoring node is found, the control software system verifies the online monitoring node through a dynamic encryption algorithm including a parameter acquisition key and an instruction key through the wireless communication gateway, and establishes a communication link after the verification is passed, so that the online monitoring node is accessed immediately;

the system configuration subsystem mainly has the functions of configuring various basic parameter information of a center, a data acquisition node and a communication port and mutual correlation information; the system is divided according to system functions and comprises a system configuration module, an association setting module and a data management module;

the configuration module of the monitoring elements is used for realizing the configuration of areas and local stations, the configuration of logic groups, the configuration of equipment and the configuration of parameters, wherein the parameter configuration comprises humidity, temperature, SF6 and switch positions, thereby generating a monitoring level of a monitoring subsystem;

the monitoring subsystem is used for displaying the operation parameters of the monitored equipment in the presence of operation and maintenance personnel in various forms of graphs, lists, characters and simulation controls, so that the operation and maintenance personnel of the monitoring system can monitor the operation condition of the equipment in real time, prompt the alarm of the equipment in time and rapidly remotely control the equipment; the monitoring subsystem also has the functions of a quick browsing mode, alarm presetting, on-line alarm and information recording and playback system; the monitoring subsystem comprises a monitoring interface module, a control equipment module, an operation equipment module, an online adjusting equipment parameter module and an alarm processing module;

the alarm processing module realizes the functions of automatic pop-up of an alarm window, alarm elimination, alarm light prompt, alarm sound prompt and alarm response;

the report management module is used for configuring various reports and counting and printing the reports;

the on-line monitoring method comprises the following steps:

step 2, the control software system scans the working frequency band of the online monitoring node by controlling the wireless communication gateway, when a certain online monitoring node to be added is scanned, the control software system adopts a dynamic encryption method to carry out security verification on the online monitoring node, if the online monitoring node passes the verification, a communication link is established with the online monitoring node, and the instant security access of the online monitoring node is realized; otherwise, refusing the joining of the online monitoring node;

the on-line monitoring node comprises a collector, a data conversion module, a preposed cache, a processor, a communication cache, a wireless transmission module, a battery system and a reset circuit; the on-line monitoring node monitors whether a control command or a data request command issued by the control software system exists in real time, and if the control command or the data request command is not monitored, the on-line monitoring node is in a dormant monitoring mode, so that the processor and the wireless transmission module are in a dormant state; if the on-line monitoring node is sensed, the on-line monitoring node immediately enters a working mode, wakes up the processor and the wireless transmission module, and executes a command issued by the control software system; after the command issued by the control software system is executed, if no new command is issued within a specified time, the online monitoring node is switched to a dormant state;

the method comprises the steps that an acquisition parameter key is dynamically generated by data acquired by online monitoring nodes in real time, each type of online monitoring node has a unique acquisition data type, when the online monitoring nodes are put into use, an internal processor of each online monitoring node extracts the acquired data according to a certain period, generates characteristic values according to a certain sequence and a certain logic relation, and extracts data sections of the characteristic values according to an agreed mode to generate the acquisition parameter key; the acquisition parameter type of each online monitoring node is pre-stored in the control software system, so that the control software system performs security verification based on the acquisition parameter type;

taking a current signal as an example, taking a frequency of 50Hz and a positive sine wave signal as the characteristics of the current signal, extracting data from a current signal acquisition node by an online monitoring node according to a frequency of 6400 points per second to generate a characteristic value, and randomly intercepting 128 data as an acquisition parameter key; after receiving the acquisition parameter key, the control software system carries out safety verification according to a current signal acquisition node key verification mode, wherein the verification mode is as follows: comparing the nth data with the (n + 64) th data, and deducing the type of the acquisition parameter as a positive sine wave signal by the approximation of absolute values so as to identify that the key is correct;

the instruction key is generated by the internal intrinsic parameters of the online monitoring node and the control word of the protocol message; the intrinsic parameters are acquisition frequency, communication frequency and data uploading mode parameters of each type of online monitoring node, the parameters are parameters for controlling the last successful configuration of the online monitoring node by the system software, and the intrinsic parameters have certain randomness after each use of the online monitoring node, so that the method can be used for safety verification;

the protocol message control word comprises an online monitoring node address, a time mark and a frame header, each acquired data has the time mark, namely an acquisition time data field, and because the time mark is a randomness parameter, a key has randomness and can be used for safety verification;

extracting and mixing the inherent parameters and the protocol message control words according to a certain sequence to generate an instruction key;

meanwhile, the control software system stores the parameters and the message control words of the online monitoring node which is successfully configured for the last time, so that the same instruction key can be generated, and the correctness of the online monitoring node key can be verified in a comparison mode;

the on-line monitoring node is in a dormant state for most of time in order to reduce power consumption, the processor and the wireless transmission module are in a dormant monitoring mode at the moment, and when a control command or a data request command issued by the control software system is monitored, the on-line monitoring node immediately enters a working mode and executes the command issued by the control software system; after the command issued by the control software system is executed for 20 seconds, no new command is issued, and the processor and the wireless transmission module enter a sleep interception mode;

the process of collecting and sending data by the online monitoring node is as follows: after an acquisition device in the online monitoring node acquires an original signal, the signal conditioning and data conversion are carried out through an internal acquisition device, the digital-to-analog conversion is carried out according to sampling at a preset sampling rate, and the converted data are stacked in a data cache in sequence; a processor in the online monitoring node reads data from the preposed cache according to the sampling rate issued by the control software system, performs operation processing and encryption processing, and stores the result into a communication cache corresponding to the wireless transmission module; the wireless transmission module calculates the channel occupation condition and the signal intensity and sends data to the wireless communication gateway according to the proper communication speed.

2. The on-line monitoring method of claim 1, wherein the wireless communication gateway uses forward error correction coding to improve the reliability of communication data transmission; the wireless communication gateway communicates with the control software system in an Ethernet, USB or WiFi mode.