CN115695028A - Building comprehensive energy internet safety data communication system - Google Patents
Building comprehensive energy internet safety data communication system Download PDFInfo
- Publication number
- CN115695028A CN115695028A CN202211384046.9A CN202211384046A CN115695028A CN 115695028 A CN115695028 A CN 115695028A CN 202211384046 A CN202211384046 A CN 202211384046A CN 115695028 A CN115695028 A CN 115695028A
- Authority
- CN
- China
- Prior art keywords
- energy
- opc
- building
- network
- data
- 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
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention relates to the technical field of energy management, in particular to a building comprehensive energy Internet safety data communication system, which comprises: the system comprises a management level network, a building level network, a floor level network, a sensor level network, a data encryption module, a data decryption module, an OPC UA interface, an OPC UA server, an OPC UA client and a communication protocol interface. The invention can realize the safe exchange and the credible circulation of the building energy Internet data and the high compatibility, the openness and the reliability of the application system. The novel energy system integrating data safety, network safety and system safety is realized.
Description
Technical Field
The invention relates to the technical field of energy management, in particular to a building comprehensive energy Internet safety data communication system.
Background
In recent years, with the rapid development of the energy field, the building and energy industry shows a trend of accelerated integration, and a building comprehensive energy system is generated in time. In fact, the building is the largest energy consumption place and is one of the most important final destination links of the energy flow. At present, the building integrated energy automation system is the main direction for realizing the intellectualization of the building integrated energy system, and the communication and control of the system are the most core technologies. The definition of intelligent buildings by the american intelligent architecture society (AIBI) is: the intelligent building optimizes, interrelates and synthesizes the four elements of building, equipment, service and operation respectively to achieve the optimal combination, so as to obtain the building with high efficiency, high function, high comfort and high safety. However, in view of the current development of the technology and industry, the energy system and the building system do not realize the organic integration between the systems, and are still in a system separation state, and an information isolated island still exists between the two. According to the investigation result, more than 90% of engineering systems are in a multi-protocol coexistence state, and multiple protocols exist to different degrees between different levels of the system (longitudinal direction) and between different subsystems within the same level (transverse direction), which is mainly reflected in that the physical layer, the data link layer, the transport layer, the network layer and the application layer of the protocols are different, for example, even if the physical layers of the two subsystems use the same standard (such as RS 485), the data link layers may use completely different communication protocols. There are major technical bottlenecks as follows: (1) The building energy industry communication protocol cannot be independent of an operating system, and the development of the protocol and the application of the protocol are still strongly related to the type of the operating system, for example, most application systems are still developed and implemented based on a Windows system, so that the strong dependence of an industry private network on the operating system is caused. (2) The information security of the building energy industry big data can not be effectively guaranteed, the system security loophole generally exists in different positions of the system, and the possibility of being attacked by illegal means such as hacker programs is extremely high, so that the whole system is paralyzed. But currently there are very few practical solutions to this problem from the underlying perspectives of data encoding, protocol design, message transmission, cryptographic encryption, secure smart computing, etc. This presents a significant challenge to energy system safety. (3) The problems of cross-platform, cross-system and cross-level access and exchange sharing of building energy industry internet data are still not solved, most application systems run in foreign software, hardware and databases and are multiple products, and therefore difficulty is brought to large-scale data circulation.
Disclosure of Invention
Therefore, the invention provides a building comprehensive energy Internet safety data communication system and method, which are used for solving the problem that cross-platform, cross-system and cross-layer interaction of building energy Internet data is difficult.
In order to achieve the above object, the present invention provides a building integrated energy internet security data communication system, comprising: the management level network is responsible for unified management and decision-making of the enterprise energy network;
the building level network is responsible for managing and controlling the energy network of the whole building;
the floor level network is responsible for the management and control of a certain floor energy network of a building;
a sensor level network responsible for monitoring and management of the building energy sensor network;
a data encryption module which encrypts data running on a network through an encryption algorithm;
the data decryption module decrypts the data running on the network through a decryption algorithm;
the OPC communication chunk comprises an OPC UA interface, an OPC UA server and an OPC UA client, wherein the OPC UA interface is a communication software module which is connected with the OPC UA server or the OPC UA client to the outside, the OPC UA server is an OPC data receiver, and the OPC UA client is an OPC data sender;
and the communication protocol interface is used for realizing communication protocol conversion, network data analysis and data verification.
Furthermore, the system establishes a system architecture based on a nonlinear time-varying system hierarchical intelligent control theory, belongs to a multi-level multi-target complex network system, and establishes an energy information integrated comprehensive network based on a building carrier by taking a building intelligent management platform as an energy integration platform and taking an energy microgrid of a microgrid, a micro optical network, a micro wind network, a micro water network and a micro gas network as a monitoring control object.
Further, the network communication method of the system is based on the OPC UA protocol,
the OPC UA protocol is based on an SOA framework, takes an extensible markup language as a network semantic representation and an interactive language, and describes an interface by using WSDL.
Furthermore, when data transmission is carried out, an encrypted energy image is established, the data of the energy image is encrypted by adopting a global scrambling transformation method, and a digital watermark signal after two-dimensional chaotic mapping Arnold transformation scrambling is embedded into a low-energy domain coefficient of an image wavelet domain, so that high confidentiality and high credibility of the digital watermark are realized.
Furthermore, the safety of the OPC UA protocol is enhanced through a data publishing-subscribing mode, and the transmitted data information can be formatted in one mode of extensible markup language, JSON and OPC UA binary formats;
when using OPC UA binary format, the publisher can encrypt and digitally sign the message before sending it to the broker.
Furthermore, the system is provided with a unique entrance which is a gateway based on a server; the gateway is packaged with the internal architecture of the system, a customized API is provided for each client, and all the clients and the consumption end access the microservice through the unified gateway.
Further, by providing an end-to-end security solution, the privacy and integrity of data sent by the proxy is ensured; information arrives at each authorized client anytime and anywhere through a shared key OPC UA technology, and a publisher and a subscriber need to share a key to safely communicate.
Further, an OPC UA information model-EB OPC UA information model is defined by combining the characteristics of energy and construction industry; EB OPC UA is a professional information model integrating energy information, building information and geographic information, and can be called by programs; the information model adopts two coding modes: OPC UA binary and XML.
The invention also provides a building comprehensive energy Internet safety data communication method, which is based on the building comprehensive energy Internet safety data communication system and comprises the following steps:
step 1: constructing an open type building integrated energy automatic system engineering network which can collect various forms of energy such as water, electricity, gas, heat, light, wind and nuclear;
step 2: developing a compatible OPC multi-protocol fusion type building energy microgrid communication protocol;
and step 3: building energy Internet big data safety design and realization;
and 4, step 4: building an energy internet based on an OPC UA protocol stack;
and 5: and constructing and implementing a circulating network of the energy supply and consumption system.
Furthermore, a novel building energy supply and consumption self-circulation network is constructed, electric power and various novel energy power supply information are adopted, a plurality of distributed power generation units and load units are integrated to form a relatively independent power grid system, power can be supplied to loads independently or matched with commercial power to supply power to the loads, and the whole building energy supply and consumption system circulation network is close to zero energy consumption.
Compared with the prior art, the invention has the advantages that the invention can realize the safe exchange and credible circulation of the building energy Internet data and the high compatibility, openness and reliability of the application system. The novel energy system integrating data safety, network safety and system safety is realized. Meanwhile, the method is beneficial to realizing a safe and flexible urban comprehensive energy digital twin system model. The safe and flexible urban comprehensive energy digital twin system model is composed of an energy physical system and an energy information system, and bidirectional mutual control of a physical space and a digital space is realized by taking data as a link. The energy physical system mainly comprises a power network formed by power generation, power distribution, power transmission and power utilization and various new energy micro-grids. A plurality of next-level subdivision scenes are nested under each scene, a toughness digital twinning technology is introduced into each scene from an energy information system part, first-time response when disasters and abnormalities occur is guaranteed, and an artificial intelligence algorithm is embedded to achieve prediction, early warning and pre-control when necessary. The energy information physical system mainly focuses on building an urban comprehensive energy infrastructure system, and building an urban comprehensive energy management and control center and an energy microgrid, so that system integration and organic cooperation of three major elements of the energy information physical system, namely human, energy and information are realized, and a perfect urban comprehensive energy real-time forecasting, early-warning and pre-controlling system and an efficient emergency guarantee system are built step by step. When the safe and flexible urban energy system is faced with sudden crisis such as earthquake, typhoon, flood, terrorism attack, epidemic situation, etc., the system can respond quickly, adapt quickly, feed back dynamically and maintain the basic operation of the city, and can recover the function quickly, which is the most advanced urban disaster prevention and reduction new concept in the world at present.
Drawings
FIG. 1 is a schematic diagram of an engineering network of a building integrated energy automation system in an embodiment;
FIG. 2 is a schematic diagram of an open energy Internet platform for implementing interconnection and interworking based on a communication protocol;
FIG. 3 is a flow chart of OPC UA information model and system setup;
FIG. 4 is a schematic diagram of a building energy Internet construction method based on IEC62541 OPC UA;
FIG. 5 is an exemplary diagram of a plaintext and ciphertext of an image of a power meter;
FIG. 6 is a flow chart of an energy image data encryption algorithm implementation;
FIG. 7 is a schematic diagram of a building energy Internet construction method based on an OPC UA protocol stack;
FIG. 8 is a block diagram of a UA-SecureConversation message;
FIG. 9 is a block diagram of an OPC UA TCP message;
fig. 10 is a schematic diagram of a novel building integrated energy internet power supply-electricity utilization micro grid.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in conjunction with the following examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example one
The invention discloses a building comprehensive energy Internet safety data communication system, which comprises: the system comprises a management level network, a building level network, a floor level network, a sensor level network, a data encryption module, a data decryption module, an OPC UA interface, an OPC UA server, an OPC UA client and a communication protocol interface.
Specifically, the system establishes a system architecture based on a nonlinear time-varying system hierarchical intelligent control theory, belongs to a multi-level multi-target complex network system, and establishes an energy information integrated comprehensive network based on a building carrier by taking a building intelligent management platform as an energy integration platform and taking an energy microgrid of a microgrid, a micro optical network, a micro wind network, a micro water network and a micro gas network as a monitoring control object.
In particular, the network communication method of the system is based on the OPC UA protocol,
the OPC UA protocol is based on an SOA framework, takes an extensible markup language as a network semantic representation and an interactive language, and describes an interface by using WSDL.
Specifically, when data transmission is carried out, an encrypted energy image is established, the data of the energy image is encrypted by adopting a global scrambling transformation method, and digital watermark signals scrambled by two-dimensional chaotic mapping Arnold transformation are embedded into low-energy domain coefficients of an image wavelet domain, so that high confidentiality and high credibility of the digital watermark are realized.
Specifically, the safety of an OPC UA protocol is enhanced through a data publishing-subscribing mode, and transmitted data information can be formatted in one mode of extensible markup language, JSON and OPC UA binary formats;
when using OPC UA binary format approach, the publisher can encrypt and digitally sign the message before sending it to the proxy.
Specifically, the system is provided with a unique entrance which is a gateway based on a server; the gateway is packaged with the internal architecture of the system, a customized API is provided for each client, and all the clients and the consumption end access the microservice through the unified gateway.
In particular, by providing an end-to-end security solution, the privacy and integrity of data sent by the proxy is ensured; information arrives at each authorized client anytime and anywhere through a shared key OPC UA technology, and a publisher and a subscriber need to share a key to safely communicate.
Specifically, an OPC UA information model-EB OPC UA information model is defined by combining the characteristics of energy and building industries; EB OPC UA is a professional information model integrating energy information, building information and geographic information, and can be called by programs; the information model adopts two coding modes: OPC UA binary and XML.
Example two
The invention also provides a building comprehensive energy Internet safety data communication method, which is based on the building comprehensive energy Internet safety data communication system and comprises the following steps:
step 1: constructing an open type building integrated energy automatic system engineering network which can collect various forms of energy such as water, electricity, gas, heat, light, wind and nuclear;
step 2: developing a compatible OPC multi-protocol fusion type building energy microgrid communication protocol;
and step 3: building energy Internet big data safety design and realization;
and 4, step 4: building an energy internet based on an OPC UA protocol stack;
and 5: and constructing and implementing a circulating network of the energy supply and consumption system.
Furthermore, a novel building energy supply and consumption self-circulation network is constructed, electric power and various novel energy power supply information are adopted, a relatively independent power grid system is formed after a plurality of distributed power generation units and load units are integrated, power can be supplied to loads independently or matched with commercial power to supply power to the loads, and the whole building energy supply and consumption system circulation network is close to zero energy consumption
Please refer to fig. 1, which is a schematic diagram of an engineering network of a building integrated energy automation system according to an embodiment.
In step 1, the building integrated energy automation system engineering network consists of four levels: the first layer is a management level network, and TCP/IP is used as a communication protocol; the second layer is a building-level network, the RS485 standard network is applied more, and a Peer-to-Peer and master-to-Peer network (Peer-to-Peer) is taken as a main structure; the third layer is a floor level network which can be connected with the monitoring functions of the DDC controller and the PLC controller; the fourth layer is a sensor level network capable of collecting various energy data.
A plurality of building energy micro-grids (which can be called building comprehensive energy micro-grids) are integrated through a system to realize a complex building comprehensive energy automatic system engineering network. The building integrated energy microgrid is a building, energy and information integrated network which takes a building intelligent management platform as an energy integration platform and takes various energy microgrids such as a microgrid, a micro optical network, a micro wind network, a micro water network, a micro air network and the like as monitoring control objects. Distributed energy micro-grids can be built on building carriers such as buildings, houses, roads, tunnels, bridges, factories and gardens, and can be combined and built into comprehensive energy micro-grids after being interconnected in a certain communication mode.
The complex building integrated energy automatic system engineering network belongs to a multi-stage multi-target system based on a nonlinear time-varying system increasing intelligent control theory. The constituent units of the system are arranged hierarchically among different levels to form a pyramid structure. The peer can exchange information, the upper and lower levels can exchange information, and the upper level is responsible for coordinating the target conflict between the same levels. The coordination is a core problem to be solved by the whole system, and the purpose of the coordination is to adjust the decision of each controller of the layer through the intervention of the controller of the lower layer so as to meet the requirement of the overall target of the whole system. The network is a neural infrastructure for constructing an energy complex system, the network protocol is a means for promoting the system to achieve the purpose of coordinating and uniformly controlling, and is a dialogue language among all perception, control and decision units.
Referring to fig. 2-4, fig. 2 is a schematic diagram of an open energy internet platform for implementing interconnection based on a communication protocol; fig. 3 is a flow chart for establishing an OPC UA information model and system, and fig. 4 is a schematic diagram of a building energy internet construction method based on IEC62541 OPC UA.
In step 2, in order to develop and realize an industrial communication system among the internal unit modules of the building energy Internet, a 'compatible OPC multi-protocol fusion type' building energy microgrid communication protocol is developed. The "protocol" refers to an energy network communication protocol, the "network" comprises three major categories of a computer information network, a control network and an energy network, and the hierarchical division of the protocol refers to an ISO/OSI seven-layer communication protocol model.
By means of various data exchange modes or standard protocols, the whole system can be completely open, namely, from the perspective of data exchange, a certain system has the function of data exchange with other systems, and can input and output information according to the self requirement. The "openness" of the open energy internet is realized by network intercommunication and platform integration, and the expression of the "openness" attribute can be represented by the logical relationship shown in fig. 2.
In step 2, a building integrated energy automation system network communication method based on OPC UA is provided. The building process of the OPC UA information model and the system is shown in fig. 3, and the building energy internet building method based on IEC62541 OPC UA is shown in fig. 4. OPC UA uses a Service-Oriented Architecture (SOA), and it can connect more devices, connecting different functional units of an application (called services) through interfaces and protocols between the services. SOA is based on eXtensible Markup Language (XML). The interface is described by using a Language based on XML (a subset of standard generalized markup Language), called Web Services Definition Language (WSDL). OPC Unified Architecture (OPC Unified Architecture) is more neutral (vendor independent), efficient, and secure. The key specific steps and the implementation method thereof are described as follows:
(1) And (5) gateway development. Is a server and is the only entrance of the system. The gateway encapsulates the internal architecture of the system, providing a customized API for each client. It also has other responsibilities: identity authentication, energy routing, load balancing, caching, monitoring, event response processing and request network fragmentation and management. All clients and consumers access the microservice through a unified gateway, and all non-business functions are processed in a gateway layer. The gateway also provides the REST/HTTP access API. The server registers and manages services through the API-GW.
(2) ESB (enterprise service bus) development. Is a pipe for connecting each service node. In order to integrate services of different systems and different protocols, the ESB performs message conversion, interpretation and routing work, so that different services are interconnected and intercommunicated.
(3) Designing and realizing an industry custom information model. OPC UA provides standards for how to package information models, and in addition to PackML, MTConnect, euromap, automation ML, etc., which have been incorporated into the OPC UA architecture, OPC UA supports industry-defined information models. The invention defines an OPC UA information model by combining the characteristics of energy and construction industry, and the model is called an EB OPC UA information model. EB OPC UA defines a professional information model integrating energy information, building information and geographic information, and can be called by programs. The OPC information items are defined as objects of different types, which may be related to each other. EB OPC UA supports the use of complex data structures that can fully describe complex processes and systems. Access to three different types of OPC servers-Data Access (DA), alarm and Event (AE), historical Data Access (HDA) is supported.
(4) And designing and implementing an information security mode. And the OPC UA system security is enhanced through a data publish-subscribe mode. The OPC UA extension protocol allows applications to publish messages to multiple subscribers through an intermediate proxy (e.g., MQTT proxy). The message may be formatted in XML, JSON, or an efficient OPC UA binary format. When using OPC UA binary format, the publisher can encrypt and digitally sign the message before sending it to the broker to ensure that no one else other than the target recipient can read or modify the message, which will serve to fundamentally protect the publisher data.
Referring to fig. 5 and 6, fig. 5 is an exemplary diagram of a plaintext and a ciphertext of an electric meter image; fig. 6 is a flow chart of an energy image data encryption algorithm implementation.
In step 3, an end-to-end security solution is provided, ensuring the privacy and integrity of the data sent by the proxy. By using the shared key OPC UA technology, information can reach each authorized application and each authorized person anytime and anywhere, and a publisher and a subscriber need to share the key to safely communicate. This is achieved by special OPC UA servers using "secure key service" (SKS). Applications that require keys use OPC UA client-server protocols to securely provide credentials to SKSs that decide whether they have access to the requested keys and return one or more keys. Data encryption, digital watermarking and the like are all data key functions which can be defined by an OPC UA energy application system in a user-defined way.
The energy image data encryption method comprises the following steps: and encrypting the image by adopting global scrambling transformation. The digital watermark signal after two-dimensional chaotic mapping Arnold transformation scrambling is embedded into the low energy domain coefficient of the image wavelet domain, so that high confidentiality and high credibility of the digital watermark are realized. Let the original image be a, a = M × N, and the key initial value be x 0 Generating a real-valued chaotic sequence x by using the Logistic chaotic system of formula 1 k Generating a real-valued chaotic sequence y using equation 2 k Then by x k And y k And respectively generating a global scrambling transformation matrix P and a gray transformation matrix Q.
The mathematical expression of the Logistic map is:
x k+1 ＝μx k (1-x k ) (formula 1)
Wherein k is an iteration time step, and for any k, x (k) is epsilon [0,1], and mu is an adjustable parameter. When 3.569954 ≦ μ ≦ 4, the Logistic map is in a chaotic state. The chaotic system can be defined on an interval (-1,1) through simple transformation and substitution, and is defined as:
wherein eta belongs to [0,2], which is a parameter.
The implementation flow of the encryption algorithm is shown in fig. 5. And (4) performing reverse operation on the encryption algorithm to obtain a decrypted image.
An example of the application of the image plaintext (original image) and the ciphertext (after the encryption algorithm is adopted) in the meter reading system is shown in fig. 5, and the meter reading data of the electric meter can be encrypted through the encryption algorithm.
The ports of OPC UA are all unique. And the OPC UA assemblies are cascaded, and each assembly can adopt an encryption algorithm module when being connected in series, so that encrypted data can be transmitted safely and reliably. For building energy Internet, the reliable transmission range can be from an energy generation link to an energy utilization link. The method comprises the steps of embedding a UA server at a field device level, embedding a UA data security component at an automation level, integrating a UA client in an enterprise-level energy management system, connecting the UA client and the enterprise-level energy management system through a cascade method, and taking energy big data as a flow link. UA components at various levels may be geographically dispersed and isolated from each other using firewalls.
Referring to fig. 7-9, fig. 7 is a schematic diagram illustrating a building energy internet construction method based on OPC UA protocol stack; FIG. 8 is a block diagram of a UA-SecureConversation message; fig. 9 is a block diagram of OPC UA TCP message.
In step 4, the OPC UA can be used for customizing research and development of a coding method, an interface layer and an application program by combining the characteristics of an energy system when applied to the energy Internet. The application program layer is responsible for building application logic and mainly comprises a UA client and a UA server. The interface function layer is responsible for accessing other components and establishing communication with the application logic layer; the stack comprises three layers of coding, safety and transmission, wherein the coding layer is responsible for coding UA binary system, UA XML and the like. The security layer is responsible for security protocols, mainly including two types of security protocols — WS-securehosting and UA-securehosting, both of which are established based on a connection of a certificate. The stack can be developed and packaged as a common component that can be reused across many applications. The transport layer is responsible for message transmission based on UA TCP, SOAP, etc. WS-SecureConversation defines the security algorithm with WS-SecurityPolicy [ OASIS07a ], while negotiating and sharing the encrypted data over the secure channel established between OPC UAs with WS-Trust [ OASIS07b ]. Encryption and signing are accomplished using XML Encryption [ W3C02] and XML Signature [ W3C08 ].
The key steps and the implementation method thereof are described as follows:
(1) Data encoding
The service message is serialized into a network format including its own input and output parameters. Currently, OPC UA specifies two encoding modes: OPC UA binary and XML. Both OPC UA binary and XML specify a network representation of a set of basic types (e.g., boolean, byte, and float) to compose structured data types and more complex data types. This particular set of primitive types is called built-in data types, their encoding is defined in [ UA part 6 ]. A further common point for all coding types is the ExtensionObject. ExtensionObject also contains an identifier indicating which data it contains and how the data is encoded.
(2) High performance binary efficient coding optimization strategy
In industrial communication and control systems, such as embedded controllers, signal processors, performance overhead is often a key parameter that is considered important. OPC UA applications need to provide efficient coding formats and fast data codec strategies. The basic concept of OPC UA binary is based on a well-defined rule that a specific set of elementary data types (built-in data types) are translated into a binary representation and written into a binary stream, and service parameter serialization and deserialization are encapsulated into a binary stream, which is the most efficient way to exchange data in different systems.
(3) Defining payload message blocks
The UA-secureconvergence uses the encoded service message as a "payload" and attaches security-related information before and after a message block. The message block structure is shown in fig. 7.
(4) Defining transport layer message blocks
OPC UA realizes simple and fast network communication through UA TCP. Some specific protocols can be defined on TCP according to the actual application requirements, but the following basic requirements need to be satisfied: (a) The size of the buffer for transceiving data is negotiated and can be configured at the application layer. (b) Different terminals of the OPC UA server may share one IP address and port. (c) The method can react to the error of the transmission layer in real time and can recover in time. The general OPC UA TCP message block structure includes two parts, a message header and a message body, as shown in fig. 8. The header contains addressing and routing information and the body contains the payload to be transmitted. The message header contains the type and the length of the message, and when the UA TCP and the UA-SecureConveration are combined, the same message header is used, so that the safety of the message can be improved. The message body contains two kinds of information, one is an encoded and encrypted service message which needs to be transmitted to a higher layer; the other is UA TCP connection information used to establish a socket connection or exchange connection error information.
Please refer to fig. 10, which is a schematic diagram of a new building integrated energy internet power supply-electricity micro grid.
In step 5, a new building energy supply and consumption self-circulation system network is constructed and implemented, as shown in fig. 10. The power supply system adopts power and various novel energy sources to supply power, integrates a novel power electronic technology, an intelligent control technology, a distributed power generation technology, a renewable energy power generation technology and a distributed energy storage technology, integrates a plurality of distributed power generation units and load units to form a relatively independent power grid system, and can independently supply power to loads or supply power to the loads through matching with commercial power. The embodiment of figure 10 is shown primarily for supplying power to building users and loads. The whole building energy supply and consumption system circulation network is close to zero energy consumption, and the energy can be self-sufficient under an ideal condition.
EXAMPLE III
The invention also discloses an energy big data real-time monitoring and management system which comprises a client energy big data monitoring and management platform, a server energy big data monitoring and management platform and a communication channel. When a building photovoltaic integrated system network is built, a micro-grid, a micro-solar energy network and an information network are fused, energy optimization configuration is achieved through reasonable distribution and supply and demand optimization matching of energy, links the links of capacity, energy supply, energy storage, energy transmission, energy utilization and energy conservation are connected through the idea of energy full life cycle management, a scientific and reasonable energy optimization combination is formed, and flexibility, conversion rate, utilization rate and energy conservation rate of an energy internet system are improved through optimization of a data network.
The energy big data real-time monitoring and management system is a data-driven distributed complex energy system which is optimally designed based on a distributed multi-agent control theory in a modern control theory and after technologies such as data safety, network safety and the like are fused, has the functions of centralized management and distributed control, and aims to realize the management automation, the intellectualization, the safety and the energy conservation of heating, ventilating and air conditioning, power distribution, water supply and drainage, cooling and heating sources, illumination, elevators, escalators and other various systems of electromechanical equipment in buildings, thereby providing comfortable, convenient and efficient living or office environment for users.
The energy OPC client is OPC client cross-platform middleware software and supports OPC protocol data reading and writing of most domestic and foreign OPC SERVERs on the market at present, such as (Matrikon, kepserver, GE IGS and the like). The energy OPC client software can be transferred to relational databases such as MSSQL/MYSQL and the like after acquiring data in real time, provides cross-platform query and interaction of development languages such as java, PHP, net, python and the like, can solve the problem of cross-platform data exchange from the data of an energy industry Internet system to the Internet and a cloud platform, provides field basic data support for an MES system or an industrial large data platform, and is suitable for all industrial control fields.
For the evaluation of the data communication performance of the OPC UA client and the server, the data subscription, query and data writing functions are mainly tested, namely the data reading and writing functions, and the system performance is judged through the test of the data reading and writing capability.
The data communication function is realized as follows: for energy data subscription, a subscription mode is selected, after a tag is successfully added, the successfully added tag and corresponding information such as a value, a state, a timestamp and an alarm are displayed in a table, then the 'update start' is clicked, the value in the table is automatically refreshed, and the sampling period is a sampling period (for example, 1s in the test example) recorded before. The values in the table are updated with the update of the data values at the OPC UA server side, and the client-related values will change only when the values at the OPC UA server side change. For energy data writing, firstly, selecting a point to be written, setting a value to be written, then executing remote writing operation, and if the system communication is normal and the hardware has no fault, successfully modifying the value of a target point to realize the control of specific parameters.
And (3) testing an alarm function: the method comprises the steps that firstly, the upper limit and the lower limit of alarm of a label or other alarm complex conditions are set by a user, OPC UA client software records the alarm into a database, after a system runs, an alarm set value is compared with a real-time measured value, then alarm information can be calculated, the alarm information is displayed in a window, and meanwhile, the alarm information is also stored into a database alarm table to provide alarm inquiry and statistical analysis.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A building integrated energy Internet safety data communication system is characterized by comprising:
the management level network is responsible for unified management and decision-making of the enterprise energy network;
a building level network responsible for the management and control of the entire building energy network;
the floor level network is responsible for the management and control of a certain floor energy network of a building;
a sensor level network responsible for monitoring and management of the building energy sensor network;
a data encryption module which encrypts data running on the network by an encryption algorithm;
the data decryption module decrypts the data running on the network through a decryption algorithm;
the OPC communication chunk comprises an OPC UA interface, an OPC UA server and an OPC UA client, wherein the OPC UA interface is a communication software module which is connected with the OPC UA server or the OPC UA client to the outside, the OPC UA server is an OPC data receiver, and the OPC UA client is an OPC data sender;
and the communication protocol interface is used for realizing communication protocol conversion, network data analysis and data verification.
2. The building integrated energy internet safety data communication system according to claim 1, wherein the system is based on a nonlinear time-varying system hierarchical intelligent control theory building system architecture, belongs to a multi-stage multi-target complex network system, and is characterized in that a building intelligent management platform is used as an energy integration platform, and energy micro-grids of a micro-grid, a micro-optical network, a micro-wind network, a micro-water network and a micro-gas network are used as monitoring control objects to build an energy information integrated network based on a building carrier.
3. The building complex energy internet secure data communication system according to claim 2, wherein the network communication method of the system is based on OPC UA protocol,
the OPC UA protocol is based on an SOA framework, takes an extensible markup language as a network semantic representation and an interactive language, and describes an interface by using WSDL.
4. The system of claim 3, wherein during data transmission, an encrypted energy image is established, the data of the energy image is encrypted by a global scrambling transformation method, and digital watermark signals scrambled by two-dimensional chaotic mapping Arnold transformation are embedded into low-energy domain coefficients of an image wavelet domain, so that high confidentiality and high credibility of digital watermarks are realized.
5. The building integrated energy internet secure data communication system according to claim 3, wherein the OPC UA protocol security is enhanced by a data publish-subscribe scheme, and the transferred data information can be formatted by one of extensible markup language, JSON, OPC UA binary format;
when using OPC UA binary format approach, the publisher can encrypt and digitally sign the message before sending it to the proxy.
6. The building complex energy internet secure data communication system according to claim 3, wherein the system is provided with a unique portal which is a server-based gateway; the gateway is packaged with the internal architecture of the system, a customized API is provided for each client, and all the clients and the consumption end access the microservice through the unified gateway.
7. The building integrated energy internet secure data communication system according to claim 6, wherein privacy and integrity of data transmitted through the agent are ensured by providing an end-to-end security solution; information arrives at each authorized client anytime and anywhere through a shared key OPC UA technology, and a publisher and a subscriber need to share a key to safely communicate.
8. The building integrated energy internet secure data communication system according to claim 7, wherein an OPC UA information model, EB OPC UA information model, is defined in connection with energy and building industry features; EB OPC UA is a professional information model integrating energy information, building information and geographic information, and can be called by programs; the information model adopts two coding modes: OPC UA binary and XML.
9. A building integrated energy Internet safety data communication method is based on the building integrated energy Internet safety data communication system of any one of claims 1 to 8, and is characterized by comprising the following steps:
step 1: constructing an open type building integrated energy automatic system engineering network capable of collecting various forms of energy such as water, electricity, gas, heat, light, wind and nuclear;
step 2: developing a compatible OPC multi-protocol fusion type building energy microgrid communication protocol;
and step 3: building energy Internet big data safety design and realization;
and 4, step 4: building an energy internet based on an OPC UA protocol stack;
and 5: and constructing and implementing a circulating network of the energy supply and consumption system.
10. The method for building integrated energy internet secure data communication according to claim 9, wherein a novel building energy supply and consumption self-circulation network is constructed, electric power and multiple novel energy supply information are adopted, a plurality of distributed power generation units and load units are integrated to form a relatively independent power grid system, power can be supplied to loads independently or matched with commercial power to supply power to the loads, and the whole building energy supply and consumption system circulation network is close to zero energy consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211384046.9A CN115695028A (en) | 2022-11-07 | 2022-11-07 | Building comprehensive energy internet safety data communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211384046.9A CN115695028A (en) | 2022-11-07 | 2022-11-07 | Building comprehensive energy internet safety data communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115695028A true CN115695028A (en) | 2023-02-03 |
Family
ID=85050486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211384046.9A Pending CN115695028A (en) | 2022-11-07 | 2022-11-07 | Building comprehensive energy internet safety data communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115695028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118158291A (en) * | 2024-05-09 | 2024-06-07 | 大方智造(天津)科技有限公司 | Configurable communication transmission method |
-
2022
- 2022-11-07 CN CN202211384046.9A patent/CN115695028A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118158291A (en) * | 2024-05-09 | 2024-06-07 | 大方智造(天津)科技有限公司 | Configurable communication transmission method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Feng et al. | Efficient and secure data sharing for 5G flying drones: A blockchain-enabled approach | |
| Daki et al. | Big Data management in smart grid: concepts, requirements and implementation | |
| Okafor et al. | Leveraging fog computing for scalable IoT datacenter using spine‐leaf network topology | |
| McKee et al. | Survey of advances and challenges in intelligent autonomy for distributed cyber‐physical systems | |
| McKee et al. | Massive-scale automation in cyber-physical systems: Vision & challenges | |
| Khujamatov et al. | IoT, IIoT, and cyber-physical systems integration | |
| US11627175B2 (en) | Edge gateway system with data typing for secured process plant data delivery | |
| US11436242B2 (en) | Edge gateway system with contextualized process plant knowledge repository | |
| CN108881470A (en) | A kind of data remote monitoring system and its implementation | |
| Wang | The Study of Mine Cyber-Physical Systems | |
| Bikmetov et al. | Infrastructure and applications of Internet of Things in smart grids: A survey | |
| Wang et al. | SSDS: A smart software-defined security mechanism for vehicle-to-grid using transfer learning | |
| Padmanaban et al. | The role of internet of things in smart homes | |
| CN115695028A (en) | Building comprehensive energy internet safety data communication system | |
| CN113014655A (en) | Internet of things network system based on block chain | |
| Sheba et al. | A new low‐cost and low‐power industrial internet of things infrastructure for effective integration of distributed and isolated systems with smart grids | |
| Human et al. | Digital twin data pipeline using MQTT in SLADTA | |
| Delinchant et al. | Massive arrival of low-cost and low-consuming sensors in buildings: towards new building energy services | |
| Gunjal et al. | Internet of things: Theory to practice | |
| CN114885012B (en) | System access method and system of Internet of things platform | |
| Robertson | Advanced synchrophasor protocol (asp) development and demonstration project | |
| Najjar-Ghabel et al. | Blockchain applications in the industrial Internet of Things | |
| CN110113193A (en) | Data transmission method, system and medium based on hierarchical agent | |
| Yang et al. | On Design of Hydropower System Aided by Internet of Things Architecture with OPC-UA and MQTT | |
| Yan et al. | Research on Cloud Edge Interaction Technology for Power IoT Based on HTTP and CoAP Protocol |
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 |