Power supply loop of converter valve cooling system

Abstract

The invention discloses a power supply loop of a converter valve cooling system. The power supply loop comprises a 24v direct current power supply loop, a CPU power supply module, an I < M > interface module, a touch screen, an OLM photoelectric module, an instrument sensor and a signal isolation sensor, an independent power switch is arranged for each of the CPU power module, the IM interface module, the touch screen, the OLM photoelectric module, the instrument sensor and the signal isolation sensor, and each power switch is connected with the 24v direct-current power supply circuit; a power switch non-closing signal is set for each power switch, the power switch non-closing signals are transmitted to a D I module of the control system through an electric connecting line, and the D I module is used for performing signal processing based on the received power switch non-closing signals to obtain D I signals. The reliability and the stability of a valve cooling control protection system are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power equipment, and more specifically, relates to a power supply circuit of a converter valve cooling system. Background Art

[0002] The converter valve plays a key role in the power system, and its normal operation is essential to ensure the stability and reliability of power supply. The internal circulation cooling system of the converter valve includes the main circulation cooling water loop and the secondary circulation cooling water loop. The main circulation cooling water loop includes the main circulation pump, mechanical filter, electric heater, electric three-way valve, check valve, degassing tank and other equipment, while the secondary circulation cooling water loop includes the deionized water system, pressure stabilization system and water supply system.

[0003] The valve cooling control and protection system uses a CPU control unit with redundant functions, which is electrically configured as an AB system with redundancy and has a self-diagnosis function. When a redundant control unit fails, it can automatically and seamlessly switch to the backup control unit, and no information or alarm / interruption is lost during the switching period. At the same time, the power supply module, I / O module, interface module, communication module and other devices in the system are also redundantly configured.

[0004] In the related art, the valve cooling control and protection system does not set up independent circuit breakers for the DC24V power supply downstream devices. This results in that when the power supply circuits of these downstream devices are abnormal or fail, other devices in the control cabinet may lose power at the same time, which in turn causes the valve cooling system to operate in a single system. Once the DC24V device power supply circuit is abnormal or fails, the valve cooling system may be in a single system operation state, which brings great risks to the safe and stable operation of the valve cooling system, reducing the reliability and stability of the system.

[0005] Therefore, how to improve the reliability and stability of the valve cooling control and protection system is a key issue that technicians in this field are concerned about. Summary of the invention

[0006] The purpose of the present application is to provide a power supply circuit for a converter valve cooling system to improve the reliability and stability of the valve cooling control protection system.

[0007] In view of the above defects or improvement requirements of the prior art, the present invention provides a power supply circuit of a converter valve cooling system, comprising:

[0008] 24v DC power supply circuit, CPU power module, IM interface module, touch screen, OLM photoelectric module, instrument sensor, signal isolation sensor;

[0009] A separate power switch is provided for each of the CPU power module, the IM interface module, the touch screen, the OLM photoelectric module, the instrument sensor, and the signal isolation sensor, and each of the power switches is connected to the 24V DC power supply circuit;

[0010] A power switch not-closed signal is set for each of the power switches, and the power switch not-closed signal is transmitted to a DI module of the control system through an electrical connection line. The DI module is used to perform signal processing based on the received power switch not-closed signal to obtain a DI signal.

[0011] Optionally, the power switch not-closed signal is transmitted to the DI module of the control system through the electrical connection line in the form of a normally closed contact.

[0012] Optionally, also include:

[0013] The PLC module is used to process the power switch not-closed signal to obtain switch status information, and send the switch status information to the control and protection system through the communication bus.

[0014] Optionally, the PLC module is also used to process alarm information according to the DI signal to obtain alarm processing information.

[0015] Optionally, it also includes: a human-computer interaction module, used to display the alarm processing information through a human-computer interaction interface.

[0016] Optionally, it also includes: a power switch monitoring module, which is used to obtain the operating parameters of each power switch in real time; wherein the operating parameters include: current and voltage fluctuations; and realize remote control function so that the corresponding power switch can be operated through a remote terminal.

[0017] Optionally, it also includes: a power distribution system for adjusting the power distribution strategy according to the real-time power data of different devices in the valve cooling system.

[0018] Optionally, it also includes: a fault prediction system for collecting historical operating data of each device in the 24V DC power supply circuit; wherein the historical operating data includes power switch status, device power consumption, and temperature; training an inference model based on the historical operating data to obtain a fault prediction model; analyzing the real-time data of the power supply circuit through the fault prediction model to obtain power supply circuit fault prediction data.

[0019] A power supply circuit of a converter valve cooling system provided in the present application includes: a 24V DC power supply circuit, a CPU power module, an IM interface module, a touch screen, an OLM photoelectric module, an instrument sensor, and a signal isolation sensor; a separate power switch is provided for each of the CPU power module, the IM interface module, the touch screen, the OLM photoelectric module, the instrument sensor, and the signal isolation sensor, and each of the power switches is connected to the 24V DC power supply circuit; a power switch not-closed signal is provided for each of the power switches, and the power switch not-closed signal is transmitted to a DI module of a control system through an electrical connection line, and the DI module is used to perform signal processing based on the received power switch not-closed signal to obtain a DI signal.

[0020] It has the following beneficial effects:

[0021] The setting of an independent power switch effectively prevents the influence of a single device power circuit failure on other devices. In the related art, an abnormality in the power circuit of a lower-level device may cause other devices in the control cabinet to lose power at the same time. However, in the present invention, even if a problem occurs in the power circuit of a certain device, other devices can still work normally, avoiding the risk of single-system operation of the valve cooling system and greatly improving the overall stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a power supply circuit of a converter valve cooling system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The purpose of the present application is to provide a power supply circuit for a converter valve cooling system to improve the reliability and stability of the valve cooling control protection system.

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] The following describes a power supply circuit of a converter valve cooling system provided by the present application through an embodiment.

[0027] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a power supply circuit of a converter valve cooling system provided in an embodiment of the present application.

[0028] In this embodiment, the loop may include:

[0029] 24V DC power supply circuit 10, CPU power module 20, IM interface module 30, touch screen 40, OLM photoelectric module 50, instrument sensor 60, signal isolation sensor 70;

[0030] A separate power switch 80 is provided for each of the CPU power module 20, the IM interface module 30, the touch screen 40, the OLM photoelectric module 50, the instrument sensor 60, and the signal isolation sensor 70, and each power switch 80 is connected to the 24V DC power supply circuit 10;

[0031] A power switch not-closed signal is set for each power switch 80, and the power switch not-closed signal is transmitted to a DI module of the control system through an electrical connection line. The DI module is used to perform signal processing based on the received power switch not-closed signal to obtain a DI signal.

[0032] The 24V DC power supply circuit 10 serves as the energy supply source for the entire system, providing necessary power support for other modules. The CPU power module 20, IM interface module 30, touch screen 40, OLM photoelectric module 50, instrument sensor 60, signal isolation sensor 70, etc. are key components required for the normal operation of the valve cooling system. By setting a separate power switch 80 for each component, the independence of the power supply of each component is achieved. When an abnormality occurs in the power circuit of a component, only the power switch 80 of the component will be affected, avoiding the spread of the fault and causing power failure of other devices. The setting of the power switch unclosed signal is to transmit it to the DI module of the control system using an electrical connection line. The DI module can process the received signal to determine the status of each power switch 80, and then realize the monitoring and management of the status of the entire power circuit to ensure the stable operation of the system.

[0033] Component connection: First, connect the 24V DC power supply circuit 10 with the CPU power module 20, IM interface module 30, touch screen 40, OLM photoelectric module 50, instrument sensor 60, and signal isolation sensor 70. When connecting, ensure that the electrical connection between each component and the power supply circuit is stable and reliable, and equip each component with a separate power switch 80 so that the power switch 80 is correctly connected in series between the component and the power supply circuit.

[0034] Signal transmission setting: For each power switch 80, a mechanism for generating and transmitting the power switch not-closed signal is set. Connect a device (such as a sensor, etc.) that can generate a power switch not-closed signal to the power switch 80, and transmit the signal to the DI module of the control system through an electrical connection line. In actual operation, it is necessary to ensure that the signal transmission line is laid reasonably to avoid interference and ensure that the DI module can accurately receive the signal. In this way, when the power switch 80 is not closed, the DI module can obtain the signal in time and process it.

[0035] In summary, this embodiment effectively prevents the influence of a single device power circuit failure on other devices by setting an independent power switch 80. In the related art, an abnormality in the power circuit of a lower-level device may cause other devices in the control cabinet to lose power at the same time, but in the present invention, even if a problem occurs in the power circuit of a certain device, other devices can still work normally, avoiding the risk of a single system operation of the valve cooling system and greatly improving the overall stability of the system.

[0036] Optionally, the power switch off signal is transmitted to the DI module of the control system through the electrical connection line in the form of a normally closed contact.

[0037] In this optional solution, the transmission method of the power switch not closed signal is limited, that is, the normally closed contact method is used to transmit it to the DI module of the control system through the electrical connection line. The normally closed contact is closed under normal circumstances. When the power switch 80 is not closed, the contact state changes, thereby generating a signal change. This method can stably and reliably transmit the power switch not closed signal to the DI module, making it easier for the DI module to monitor the abnormality of the power switch 80 state in a timely and accurate manner, and providing a stable signal source for the subsequent system to judge and process the power circuit state.

[0038] Optionally, also include:

[0039] The PLC module is used to process the power switch not closed signal, obtain the switch status information, and send the switch status information to the control and protection system through the communication bus.

[0040] In this optional solution, a PLC module is added. The function of the PLC module is to process the power switch not closed signal, obtain the switch status information, and send this information to the control and protection system through the communication bus. This enables the control and protection system to obtain detailed status information of the power switch 80 in real time, so as to timely grasp the working status of the power circuit of each device during the operation of the system. When an abnormality occurs, it can more accurately diagnose the fault and take corresponding protection measures, thereby enhancing the monitoring and management capabilities of the entire system for the power circuit status.

[0041] Optionally, the PLC module is also used to process alarm information according to the DI signal to obtain alarm processing information.

[0042] In this optional solution, the PLC module is given the function of processing alarm information according to the DI signal, thereby obtaining alarm processing information. When the PLC module receives the DI signal, it determines whether an alarm is required and determines the type and level of the alarm according to the preset logic, and then generates the corresponding alarm processing information. This helps the system to detect potential fault risks in a timely manner and send accurate alarm prompts to operators so that timely measures can be taken to deal with them, thereby improving the safety and reliability of the system.

[0043] Optionally, it also includes: a human-computer interaction module, which is used to display alarm processing information through a human-computer interaction interface.

[0044] In this optional solution, a human-computer interaction module is introduced. This module is used to display alarm processing information through the human-computer interaction interface, so that operators can intuitively understand the alarm situation in the system, including the location of the alarm, the cause and other detailed information. Operators can respond quickly based on this information and take appropriate actions to solve the problem, which improves the operability of the system and the convenience of human-computer interaction, facilitates timely troubleshooting, and ensures the normal operation of the system.

[0045] Optionally, it also includes: a power switch 80 monitoring module, which is used to obtain the operating parameters of each power switch 80 in real time; wherein the operating parameters include: current and voltage fluctuations; and realize remote control function so that the corresponding power switch 80 can be operated through a remote terminal.

[0046] In this optional solution, a power switch 80 monitoring module is added. This module can obtain the operating parameters of each power switch 80 in real time, such as current and voltage fluctuations. By monitoring these operating parameters, it is possible to understand in real time whether the working state of the power switch 80 is normal and whether there is a potential risk of failure. At the same time, the module also implements a remote control function, and the operator can operate the corresponding power switch 80 through a remote terminal, such as remotely turning on or off the power switch 80, which greatly improves the maintenance convenience and flexibility of the system, especially in some cases where it is inconvenient to operate on site, the power switch 80 can be controlled in time to ensure stable operation of the system.

[0047] Optionally, it also includes: a power distribution system for adjusting the power distribution strategy according to the real-time power data of different devices in the valve cooling system.

[0048] In this optional solution, a power distribution system is added. The system can adjust the power distribution strategy according to the real-time power data of different devices in the valve cooling system. Since the power requirements of various devices in the valve cooling system may be different under different operating conditions, the power distribution system can dynamically optimize the power distribution to ensure that each device can obtain appropriate power supply, avoid abnormal operation of equipment or power waste due to unreasonable power distribution, and improve the energy utilization efficiency and operation stability of the entire valve cooling system.

[0049] Optionally, it also includes: a fault prediction system for collecting historical operating data of each device in the 24V DC power supply circuit 10; wherein the historical operating data includes the state of the power switch 80, device power consumption, and temperature; training an inference model based on the historical operating data to obtain a fault prediction model; analyzing the real-time data of the power circuit through the fault prediction model to obtain power circuit fault prediction data.

[0050] This optional solution further includes a fault prediction system. The fault prediction system collects historical operating data of each device in the 24V DC power supply circuit 10, covering information such as the power switch 80 status, device power consumption, temperature, etc. Based on these historical data, the inference model is trained to obtain a fault prediction model. Then, the real-time data of the power circuit is analyzed by the fault prediction model to obtain power circuit fault prediction data. This enables the system to predict possible faults in advance so that preventive measures can be taken before the fault occurs, such as replacing aging equipment in advance, adjusting operating parameters, etc., which greatly improves the reliability and maintainability of the system and reduces system downtime and losses caused by sudden faults.

[0051] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0052] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0053] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0054] The above is a detailed introduction to the power supply circuit of the converter valve cooling system provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A power supply circuit of a converter valve cooling system, characterized in that: include: 24v DC power supply circuit, CPU power module, IM interface module, touch screen, OLM photoelectric module, instrument sensor, signal isolation sensor; A separate power switch is provided for each of the CPU power module, the IM interface module, the touch screen, the OLM photoelectric module, the instrument sensor, and the signal isolation sensor, and each of the power switches is connected to the 24V DC power supply circuit; A power switch not-closed signal is set for each of the power switches, and the power switch not-closed signal is transmitted to a DI module of the control system through an electrical connection line. The DI module is used to perform signal processing based on the received power switch not-closed signal to obtain a DI signal.

2. The power supply circuit according to claim 1, characterized in that: The power switch off signal is transmitted to the DI module of the control system through the electrical connection line in the form of a normally closed contact.

3. The power supply circuit according to claim 2, characterized in that: Also includes: The PLC module is used to process the power switch not-closed signal to obtain switch status information, and send the switch status information to the control and protection system through the communication bus.

4. The power supply circuit according to claim 3, characterized in that: The PLC module is also used to process alarm information according to the DI signal to obtain alarm processing information.

5. The power supply circuit according to claim 4, characterized in that: Also includes: The human-computer interaction module is used to display the alarm processing information through a human-computer interaction interface.

6. The power supply circuit according to claim 5, characterized in that: Also includes: The power switch monitoring module is used to obtain the operating parameters of each power switch in real time; wherein the operating parameters include: current and voltage fluctuations; and realize the remote control function so as to operate the corresponding power switch through the remote terminal.

7. The power supply circuit according to claim 6, characterized in that: Also includes: The power distribution system is used to adjust the power distribution strategy according to the real-time power data of different devices in the valve cooling system.

8. The power supply circuit according to claim 7, characterized in that: Also includes: A fault prediction system is used to collect historical operation data of each device in a 24V DC power supply circuit; the historical operation data includes power switch status, device power consumption, and temperature; an inference model is trained based on the historical operation data to obtain a fault prediction model; and the real-time data of the power supply circuit is analyzed by the fault prediction model to obtain power supply circuit fault prediction data.

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