Plant-level data communication system based on public DCS
By designing a plant-level data communication system based on public DCS in the cogeneration system, the unit DCS signals are uniformly dispatched and synchronized, and two-way communication with the power plant's smart heating system, the problem of high management and maintenance costs of traditional systems is solved, and efficient, stable and secure data communication and power grid management are achieved.
Patent Information
- Application Number
- CN202422238093.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In traditional cogeneration systems, there are numerous multiple modules and controllers, resulting in high management and maintenance costs, and an intelligent data communication system is required to improve efficiency and stability.
A factory-level data communication system based on public DCS was designed. The signals of the first and second units DCS were uniformly dispatched through the unit's public DCS system, and the Modbus protocol was used for synchronous regulation, and communication with the power plant's smart heating system was conducted in both directions, ensuring data security through isolators and isolation gates.
It realizes unified regulation of multiple units, improves system data communication efficiency and grid stability, ensures data security and improves management efficiency.
Smart Images
Figure CN222981571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of data communication, and particularly relates to a plant-level data communication system based on a common DCS. Background Technique
[0002] With the continuous growth of energy consumption and the exacerbation of environmental deterioration and global warming problems, China is accelerating the optimization and upgrading of its energy structure. Under the goal of achieving carbon neutrality, technologies such as the coordination of multi-energy systems, combined heat and power generation, and efficient peak shaving capabilities have become particularly crucial. The combined heat and power generation technology realizes the efficient utilization of energy by reducing heat loss during the cooling process and occupies a dominant position in the global heating market.
[0003] However, there are some problems that need to be solved urgently in the actual application of traditional combined heat and power generation systems. In actual applications, the system contains multiple modules, and each module contains multiple controllers. The large number of controllers increases the investment in the management and maintenance of the power system. Therefore, it is necessary to establish an intelligent data communication system including a DCS layer and an MIS layer. Content of the Utility Model
[0004] Aiming at the defects existing in the prior art, the utility model provides a plant-level data communication system based on a common DCS, which uniformly schedules the signals of the first and second unit DCSs through the unit common DCS system. Its technical purpose is to improve the data communication efficiency of the system and enable the leadership to monitor the units through the MIS layer.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions:
[0006] A plant-level data communication system based on a common DCS, characterized by including: an MIS layer and a DCS layer; the DCS layer includes a first unit DCS, a second unit DCS, and a unit common DCS. The data of the first unit DCS, the second unit DCS, and the unit common DCS are sent to a convergence switch and transmitted to the MIS layer for supervision and regulation; the control signals of the first unit DCS and the second unit DCS are synchronized to the unit common DCS through the Modbus protocol for unified regulation; the unit common DCS communicates bidirectionally with the intelligent heating system of the power plant; the data of the intelligent heating system of the power plant are sent to the convergence switch.
[0007] Further, the data of the first unit DCS, the unit common DCS, and the second unit DCS are respectively transmitted through interface machine 3, interface machine 2, and interface machine 1. After passing through isolator 3, isolator 2, and isolator 1 respectively, the data are network-isolated through an isolation gateway and then sent to the convergence switch.
[0008] Further, the DCS of the first unit and the DCS of the second unit are respectively connected to the unit common DCS through register 2 and register 1; the unit common DCS is connected to the power plant intelligent heating system through a common H90 intelligent operation server, a bi-directional isolator, and an integrated gateway; the data of the power plant intelligent heating system is transmitted to the aggregation switch through isolator 4.
[0009] Further, the DCS of the first unit includes a first DCS engineer station, first DCS server 1, first DCS server 2, first DCS server 3, a first field control processor, and a first field device controller, and is connected in series in the network structure.
[0010] Further, the DCS of the second unit includes a second DCS engineer station, second DCS server 1, second DCS server 2, second DCS server 3, a second field control processor, and a second field device controller, and is connected in series in the network structure.
[0011] Further, the unit common DCS includes a common engineer station, common server 1, common server 2, common server 3, and a common field control processor, and is connected in series in the network structure.
[0012] Further, the power plant intelligent heating system includes a kernel-based virtual machine, intelligent heating server 1, intelligent heating server 2, intelligent heating server 3, and intelligent heating server 4, and is connected in series in the network structure.
[0013] The beneficial effects of the present utility model are as follows:
[0014] (1) By adopting the Modbus communication protocol, after aggregating the control signals of the DCSs of the first and second units to the unit common DCS, they are then transmitted to the intelligent heating system; the control signals of the intelligent heating system are first transmitted to the unit common DCS and then distributed to the first and second units, enabling unified regulation and control of multiple units.
[0015] (2) After screening the power plant data using isolators and isolation gateways, it is transported to the MIS layer, ensuring data security. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of the plant-level data communication system based on the unit common DCS of the present utility model;
[0017] In the figure: 1 - First DCS engineer station; 2 - First DCS server 1; 3 - First DCS server 2; 4 - First DCS server 3; 5 - Second DCS engineer station; 6 - Second DCS server 1; 7 - Second DCS server 2; 8 - Second DCS server 3; 9 - Common engineer station; 10 - Common server 1; 11 - Common server 2; 12 - Common server 3; 13 - Kernel-based virtual machine; 14 - Intelligent heating server 1; 15 - Intelligent heating server 2; 16 - Intelligent heating server 3; 17 - Intelligent heating server 4; 18 - Integrated gateway; 19 - Bi-directional isolator; 20 - Common H90 intelligent operation server; 21 - Common field control processor; 22 - First field control processor; 23 - First field device controller; 24 - Second field control processor; 25 - Second field device controller; 26 - Interface machine 1; 27 - Interface machine 2; 28 - Interface machine 3; 29 - Isolator 1; 30 - Isolator 2; 31 - Isolator 3; 32 - Isolator 4; 33 - Aggregation switch; 34 - Register 1; 35 - Register 2; 36 - Isolation gateway. Detailed implementation mode
[0018] For a clearer description of the technical problems solved and beneficial effects of the present utility model, the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings.
[0019] As Figure 1 shown, the present application provides a plant-level data communication system based on a common DCS, including: an MIS layer and a DCS layer, and covering multiple engineer stations, servers, field control processors and device controllers. The DCS layer includes a first unit DCS, a second unit DCS and a unit common DCS, which improves the control efficiency and stability of the system. The data of the first unit DCS, the second unit DCS and the unit common DCS are sent to the aggregation switch (33) and transmitted to the MIS layer for supervision and regulation; the control signals of the first unit DCS and the second unit DCS are synchronized to the unit common DCS through the Modbus protocol for unified regulation; the unit common DCS communicates bidirectionally with the power plant intelligent heating system; the data of the power plant intelligent heating system are sent to the aggregation switch (33). Among them, the unit common DCS transmits the control signal to the power plant intelligent heating system, and the control signal of the power plant intelligent heating system is first transmitted to the unit common DCS and then distributed to the first and second unit DCSs, so as to achieve bidirectional communication. It can effectively integrate the data communication in the power plant and improve the management efficiency and the stability of the power grid.
[0020] In this embodiment, the data of the first unit DCS, the unit common DCS, and the second unit DCS are respectively transmitted through interface machine 3 (28), interface machine 2 (27), and interface machine 1 (26). After passing through isolator 3 (31), isolator 2 (30), and isolator 1 (29) respectively, the data is network-isolated through the isolation gateway (36) and then delivered to the aggregation switch (33). The first unit DCS and the second unit DCS are respectively connected to the unit common DCS through register 2 (35) and register 1 (34); the unit common DCS is connected to the power plant intelligent heating system through the common H90 intelligent operation server (20), the bi-directional isolator (19), and the integrated gateway (18); the data of the power plant intelligent heating system is delivered to the aggregation switch (33) through isolator 4 (32). This application uses isolators and an isolation gateway to screen important data and then transmit it to the MIS layer, enhancing the security of data transmission. The leadership can monitor the operation status of the units in real time through the MIS layer and make timely adjustments to improve the reliability of power supply and heating and the stability of power grid operation.
[0021] In this embodiment, the first unit DCS includes the first DCS engineer station (1), the first DCS server 1 (2), the first DCS server 2 (3), the first DCS server 3 (4), the first on-site control processor (22), and the first on-site device controller (23), and they are connected in series in the network structure.
[0022] In this embodiment, the second unit DCS includes the second DCS engineer station (5), the second DCS server 1 (6), the second DCS server 2 (7), the second DCS server 3 (8), the second on-site control processor (24), and the second on-site device controller (25), and they are connected in series in the network structure.
[0023] In this embodiment, the unit common DCS includes the common engineer station (9), the common server 1 (10), the common server 2 (11), the common server 3 (12), and the common on-site control processor (21), and they are connected in series in the network structure.
[0024] In this embodiment, the power plant intelligent heating system includes the kernel-based virtual machine (13), the intelligent heating server 1 (14), the intelligent heating server 2 (15), the intelligent heating server 3 (16), and the intelligent heating server 4 (17), and they are connected in series in the network structure.
[0025] The above is only the preferred embodiment of the present invention. Of course, in addition to the above examples, the present invention can also have other embodiments. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection of the present invention.
Claims
1. A plant-level data communication system based on a public DCS, characterized in that: include: The MIS layer and the DCS layer; the DCS layer includes a first unit DCS, a second unit DCS and a unit common DCS; data of the first unit DCS, the second unit DCS and the unit common DCS are transmitted to a convergence switch (33) and transmitted to the MIS layer for supervision and regulation; control signals of the first unit DCS and the second unit DCS are synchronized to the unit common DCS through the Modbus protocol for unified regulation; the unit common DCS communicates bidirectionally with the power plant smart heating system; data of the power plant smart heating system are transmitted to the convergence switch (33).
2. A plant-level data communication system based on a public DCS according to claim 1, characterized in that: The data of the first unit DCS, the unit common DCS and the second unit DCS are transmitted respectively through the interface machine 3 (28), the interface machine 2 (27) and the interface machine 1 (26), and after passing through the isolator 3 (31), the isolator 2 (30) and the isolator 1 (29) respectively, the data is isolated through the isolation network switch (36) and then transmitted to the aggregation switch (33).
3. A plant-level data communication system based on a public DCS according to claim 1, characterized in that: The first unit DCS and the second unit DCS are connected to the unit common DCS via register 2 (35) and register 1 (34) respectively; the unit common DCS is connected to the power plant smart heating system via a common H90 intelligent operation server (20), a bidirectional isolator (19) and an integrated gateway (18); data of the power plant smart heating system is transmitted to the aggregation switch (33) via isolator 4 (32).
4. A plant-level data communication system based on a public DCS according to claim 1, characterized in that: The first unit DCS comprises a first DCS engineer station (1), a first DCS server 1 (2), a first DCS server 2 (3), a first DCS server 3 (4), a first field control processor (22) and a first field device controller (23), which are connected in series in a network structure.
5. A plant-level data communication system based on a public DCS according to claim 1, characterized in that: The second unit DCS comprises a second DCS engineer station (5), a second DCS server 1 (6), a second DCS server 2 (7), a second DCS server 3 (8), a second field control processor (24) and a second field device controller (25), which are connected in series in a network structure.
6. A plant-level data communication system based on a public DCS according to claim 1, characterized in that: The unit public DCS comprises a public engineer station (9), a public server 1 (10), a public server 2 (11), a public server 3 (12) and a public field control processor (21), which are connected in series in a network structure.
7. A plant-level data communication system based on a public DCS according to claim 1, characterized in that: The power plant smart heating system includes a kernel-based virtual machine (13), a smart heating server 1 (14), a smart heating server 2 (15), a smart heating server 3 (16) and a smart heating server 4 (17), which are connected in series in a network structure.