CN212811757U - Wireless multi-access intelligent management system for small electric power scheduling information of power grid - Google Patents
Wireless multi-access intelligent management system for small electric power scheduling information of power grid Download PDFInfo
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- CN212811757U CN212811757U CN202021261820.3U CN202021261820U CN212811757U CN 212811757 U CN212811757 U CN 212811757U CN 202021261820 U CN202021261820 U CN 202021261820U CN 212811757 U CN212811757 U CN 212811757U
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Abstract
The utility model discloses a wireless multiple access intelligent management system of little electricity scheduling information of electric wire netting, user terminal are based on four safe district real-time communication servers of wireless channel connection, and four safe district real-time communication servers, four safe district core switches, interval prevent that hot wall, three safe district keep apart the exchange equipment and connect gradually. The safe three-area isolation switching equipment is connected with the communication bus, and the safe three-area load balancing server cluster and the safe three-area small electricity management database server are connected to the communication bus. The user terminal is used for reporting data or requesting data to the safe four-zone real-time communication server; and the safety three-area load balancing server cluster is used for distributing proper servers to receive the request of processing the user terminal and performing read-write access operation on the safety three-area small electric management database server. The system can upload the power generation resource information of the small power station to the power grid control center, and facilitates information interaction between small power users with unstable communication conditions and the power grid control center.
Description
Technical Field
The utility model relates to a wireless multiple access intelligent management system of little electric scheduling information of electric wire netting.
Background
In general, a power station with a power grid company intranet channel transmits small hydropower data through a PC and a built-in special communication protocol (such as IEC60870-5-104 protocol) and data exchange software. The small electricity generally refers to a conventional energy power station which has an installed capacity of less than 2.5 ten thousand kilowatts or is scheduled by regional and county-level power supply bureaus and has a grid-connected voltage level of 110KV or below. The power stations are located in remote areas, poor in communication conditions, poor in operation conditions and weak in technical transformation and upgrading capacity, a private network is not established to be communicated with an intranet of a power supply company, and transmission has to be carried out by means of the technologies such as the internet, even a mobile network, GPRS (general packet radio service), a narrow-band Internet of things and Beidou. According to the characteristics of the power secondary system, a production control area and a management information area are divided. The production control large area is divided into a control area (namely a safety first area) and a non-control area (namely a safety second area). The information management large area is divided into a production management area (namely, a safety three area) and a management information area (a safety four area). Since the network security related regulations definitely require that cross-regional interconnection is forbidden, the small electricity data cannot be directly imported into the safe three-region where the small electricity management system database is located through the internet (namely, the safe four-region).
Disclosure of Invention
The purpose of the invention is as follows: aiming at the prior art, the wireless multi-access intelligent management system for the power grid small electricity scheduling information is provided, so that the problem of self-adaptive data transmission of data reporting or query of different safety zones in various user access modes is solved, and information interaction between small electricity users with unstable communication conditions and a power grid control center is facilitated.
The technical scheme is as follows: a wireless multi-access intelligent management system for power grid small electricity scheduling information comprises a user terminal, a safe four-zone real-time communication server, a safe four-zone core switch, an interval firewall, a safe three-zone isolation switching device, a safe three-zone load balancing server cluster and a safe three-zone small electricity management database server; the user terminal is connected with the safe four-zone real-time communication server based on a wireless channel, the safe four-zone real-time communication server is connected with the safe four-zone core switch, the safe four-zone core switch is connected with the interval firewall, the interval firewall is connected with the safe three-zone isolation switching equipment, the safe three-zone isolation switching equipment is connected with a communication bus, and the safe three-zone load balancing server cluster and the safe three-zone small electricity management database server are connected with the communication bus;
the user terminal is used for reporting data or requesting data to the safe four-zone real-time communication server; and the load balancing server cluster of the three safety zones is used for receiving a request of processing the user terminal by the distribution server and performing read-write access operation on the small electric management database server of the three safety zones.
Further, the safety three-zone load balancing server cluster comprises two Nginx load balancers and two WEB servers, and each Nginx load balancer is connected to each WEB server; the two Nginx load balancers are connected with each other and backup each other.
Has the advantages that: the utility model discloses a wireless multiple access intelligent management system of little electric scheduling information of electric wire netting utilizes user terminal, real-time communication server, core switch, prevent hot wall, isolation switching equipment, load balance server cluster and the database server that distributes in different safe areas, can upload electric wire netting control center with the power generation resource information of little power station, makes things convenient for the unstable little electric user of communication condition and electric wire netting control center's information interaction.
Drawings
FIG. 1 is a schematic diagram of the system;
fig. 2 is a schematic diagram of a security three-zone load balancing server cluster structure.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the left side is the power station side, and the security level is four security zones; the right side is the electric wire netting side, and the security level is three safe areas. The utility model provides a little electric scheduling information multiple access intelligent management system of electric wire netting, includes a plurality of user terminal 1, four district real-time communication server 2 of safety, four district core switch 3 of safety, the interval prevents hot wall 4, three district isolation switching equipment 5 of safety, three district load balancing server cluster 6 of safety and three district little electric management database server 7 of safety. User terminal 1 is based on wireless channel connection safety four districts real-time communication server 2, and safety four districts real-time communication server 2 is connected safety four districts core switch 3, and safety four districts core switch 3 is connected the interval and is prevented hot wall 4, and the interval is prevented hot wall 4 and is connected the safe three districts and keep apart exchange device 5, and safe three districts is kept apart exchange device 5 and is connected communication bus, and safe three districts load balancing server cluster 6 and safe three districts little electric management database server 7 are connected to communication bus.
As shown in fig. 2, the security three-zone load balancing server cluster 6 includes two Nginx load balancers 601 and two WEB servers 602, where each Nginx load balancer 601 is connected to each WEB server 602; the two Nginx load balancers 601 are connected to each other and backup each other. The cluster of the security three-area load balancing server 6 is used for allocating a proper server to receive the request of processing the user terminal 1 and performing read-write access operation on the security three-area small electric management database server 7.
For the small electricity of the intranet channel of the power grid-free company, the following three modes can be adopted as backups for each other, so that the reliability of data transmission is improved: the method comprises a data reporting method based on short messages, a data reporting method based on APP and a mode based on Web pages. The three types are all based on wireless channels, so that the user terminal 1 of the system is a PC or a mobile phone terminal and is used for reporting data or requesting data to the safe four-zone real-time communication server 2.
The user terminal 1 selects the best mode according to the type and quality of the wireless signal, for example, automatically selects a short message to send under the 2G condition, and reports the short message by adopting network flow under the 3G and 4G network conditions. The network flow mode can be APP and Web, the former is used for mobile phones, the latter is used for PC, the power grid mobile cloud network can be used, and the wireless Virtual Private Dial Network (VPDN) can also be used. Under the conditions of 3G and 4G networks, information such as charts can be transmitted besides transmitted character information. Corresponding data automatic filling software is configured on the safe four-zone real-time communication server 2, messages suitable for different communication modes are generated and are used by various terminals, and meanwhile, the state of each data transmission is maintained until the task is confirmed to be completed.
When a user at the side of the power station needs to access the safe three-area small electricity management database server 7, the user can be connected to the safe four-area real-time communication server 2 in a Web client side, APP side and short message mode, and the user selects to report data or inquire information and the like. The safe four-zone real-time communication server 2 firstly tests the connected channels, then selects a proper channel according to a user request to form a corresponding communication protocol message, and carries out 'conversation' with the safe three-zone load balancing server cluster 6 on the power grid side through the safe four-zone core switch 3, the interval firewall 4 and the safe three-zone isolation switching equipment 5 in sequence.
The safety three-area load balancing server cluster 6 is based on double high-performance servers and a load balancing cluster Nginx-KeepAlived framework, and solves the performance problem that small power users access a power grid control center server in a Web mode. After a load balancing mechanism is started, when there are multiple requests, the Nginx load balancer 601 guides the user request to one of the WEB servers 602 in a balanced manner, the balancing degree depends on the configuration of load balancing weight parameters, and it is ensured that when thousands of users access the grid control center server concurrently, system congestion or system crash caused by too many burst requests cannot occur. When the WEB server 602 accesses the safe three-area small electricity management database server 7, 1 database server is down at any time, and the access of the WEB server to the database cannot be influenced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A wireless multi-access intelligent management system for power grid small electricity scheduling information is characterized by comprising a user terminal (1), a safe four-zone real-time communication server (2), a safe four-zone core switch (3), an interval firewall (4), a safe three-zone isolation switching device (5), a safe three-zone load balancing server cluster (6) and a safe three-zone small electricity management database server (7); the user terminal (1) is connected with the safe four-zone real-time communication server (2) based on a wireless channel, the safe four-zone real-time communication server (2) is connected with the safe four-zone core switch (3), the safe four-zone core switch (3) is connected with the interval firewall (4), the interval firewall (4) is connected with the safe three-zone isolation switching equipment (5), the safe three-zone isolation switching equipment (5) is connected with a communication bus, and the safe three-zone load balancing server cluster (6) and the safe three-zone small electricity management database server (7) are connected with the communication bus;
the user terminal (1) is used for reporting data or requesting data to the safe four-zone real-time communication server (2); the load balancing server cluster (6) of the three safety zones is used for receiving a request of processing the user terminal (1) by a distribution server and performing read-write access operation on the small electric management database server (7) of the three safety zones.
2. The wireless multi-access intelligent management system for power grid small electricity scheduling information according to claim 1, wherein the security three-zone load balancing server cluster (6) comprises two Nginx load balancers (601) and two WEB servers (602), and each Nginx load balancer (601) is connected to each WEB server (602); the two Nginx load balancers (601) are connected with each other and backup each other.
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| CN202021261820.3U CN212811757U (en) | 2020-07-01 | 2020-07-01 | Wireless multi-access intelligent management system for small electric power scheduling information of power grid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024037328A1 (en) * | 2023-02-24 | 2024-02-22 | 中广核工程有限公司 | Global data control method and apparatus for network security of industrial control system of nuclear power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024037328A1 (en) * | 2023-02-24 | 2024-02-22 | 中广核工程有限公司 | Global data control method and apparatus for network security of industrial control system of nuclear power plant |
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