Electrical system with emergency function and high voltage direct current supply
The intelligent emergency lighting control of the HVDC high-voltage direct current system solves the problems of slow response speed and insufficient reliability of the existing HVDC lighting system in emergency situations, realizes faster and more reliable emergency lighting management, and improves integration and resource allocation efficiency.
Patent Information
- Application Number
- CN202521821482.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-26
AI Technical Summary
Existing HVDC lighting systems suffer from slow response times, insufficient reliability, and low integration with daily lighting systems in emergency situations, and lack an effective emergency lighting management mechanism.
The intelligent emergency lighting control system based on the HVDC high-voltage direct current system includes an AC power distribution unit, an HVDC unit, a main control unit, a DC power distribution unit, a leakage current detection unit, an emergency energy storage unit, a communication network, and distributed lighting nodes, all integrated in the control cabinet and energy storage cabinet. Centralized control and monitoring are achieved through the communication network. The system uses SiC MOSFET intelligent gate drivers and high-efficiency DC/DC converters, combined with distributed lighting nodes and emergency energy storage units, to achieve fast and reliable emergency lighting management.
It significantly improves the response speed and reliability of lighting systems, achieves higher integration and flexible and efficient resource allocation, and reduces maintenance costs and energy consumption.
Smart Images
Figure CN224683935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting equipment technology, and in particular to an electrical system with emergency power supply and high voltage DC power supply. Background Technology
[0002] A lighting system is a system based on providing illumination, including natural light lighting systems, artificial light lighting systems, and systems combining the two. It is a distributed wireless telemetry, remote control, and remote communication control system composed of technologies such as computers, wireless communication data transmission, intelligent computer information processing, spread spectrum power line communication technology, and energy-saving electrical appliance control, to achieve safety, energy saving, convenience, comfort, and artistry in lighting applications.
[0003] Most current centralized lighting control systems rely on alternating current (AC), which often requires complex switching mechanisms to switch to backup power in emergency situations. Furthermore, traditional emergency lighting systems typically operate independently of daytime lighting systems, leading to increased maintenance costs and wasted resources.
[0004] Existing emergency lighting solutions suffer from slow response times, insufficient reliability, and low integration with everyday lighting systems. Particularly in HVDC lighting systems, the lack of an effective emergency lighting management mechanism is a pressing issue that needs to be addressed. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an electrical system with high-voltage DC power supply and emergency function. It is based on intelligent emergency lighting control of HVDC high-voltage DC system and can realize faster, more reliable and more integrated emergency control.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An electrical system with emergency power supply includes an AC power distribution unit, an HVDC unit, a main control unit, a DC power distribution unit, a leakage current detection unit, an emergency energy storage unit, a communication network, a high-voltage DC power grid, and distributed lighting nodes; the AC power distribution unit, HVDC unit, main control unit, DC power distribution unit, and leakage current detection unit are integrated in a control cabinet; the emergency energy storage unit, except for the photovoltaic array, is integrated in an energy storage cabinet;
[0008] The AC power distribution unit is connected to the HVDC unit and the main control unit; the HVDC unit is connected to the main control unit, the emergency energy storage unit, and the distributed lighting nodes for power supply; the main control unit communicates with the HVDC unit, the emergency energy storage unit, the DC power distribution unit, the leakage current detection unit, and the distributed lighting nodes through the communication network; the emergency energy storage unit is connected to the communication network and the high-voltage DC grid.
[0009] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the AC power distribution unit includes a type B residual current circuit breaker, an AC fuse connected in parallel with the main circuit, and a surge protector.
[0010] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the HVDC unit includes a rectifier module, a DC / DC isolated power supply module, and a hot-swappable control module.
[0011] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the main control unit includes a human-machine interface, an intelligent gateway, a wireless communication module, and an MCU main control module, wherein the MCU main control module is connected to the human-machine interface, the intelligent gateway, and the wireless communication module respectively.
[0012] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the DC power distribution unit includes a DC backup protection switch, a DC surge arrester, and a multi-channel high-voltage DC circuit breaker.
[0013] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the leakage current detection unit includes a shunt trip, a Hall leakage current sensor, and a leakage current detection module.
[0014] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the emergency energy storage unit includes a DC / DC converter, a battery pack, and a photovoltaic solar panel; the DC / DC converter is connected to the MCU main control module, and the battery pack and photovoltaic solar panel are connected.
[0015] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the DC / DC converter includes a unidirectional DC / DC converter and a bidirectional DC / DC converter; the unidirectional DC / DC converter is connected to a photovoltaic solar panel, and the bidirectional DC / DC converter is connected to a battery pack.
[0016] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the distributed lighting node includes LED lamps and illuminance sensors or occupancy sensors.
[0017] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the communication network adopts wired DALI or wireless BLE Mesh communication.
[0018] As a preferred embodiment of the high-voltage DC power supply electrical system with emergency function described in this utility model, the DC / DC converter adopts a SiC MOSFET intelligent gate driver.
[0019] Compared with existing technologies, the beneficial effects of this invention are as follows: By introducing advanced HVDC technology and intelligent emergency lighting management strategies, this invention significantly improves the overall performance and reliability of the lighting system. It not only solves many drawbacks of traditional emergency lighting systems, such as slow response speed, insufficient reliability, and low integration with daily lighting systems, but also achieves more flexible and efficient resource allocation, possessing broad application prospects and market potential. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0021] Figure 1 This is a system framework diagram of the present invention.
[0022] Figure 2 This is a schematic diagram of the emergency energy storage unit of this utility model.
[0023] Figure 3 This is an exploded view of the system structure of this utility model.
[0024] The diagram is labeled as follows: 1. AC power distribution unit; 2. HVDC unit; 3. Main control unit; 4. DC power distribution unit; 5. Leakage detection unit; 6. Emergency energy storage unit; 7. Communication network; 8. High-voltage DC grid; 9. Distributed lighting node. Detailed Implementation
[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0026] Example 1
[0027] Reference Figure 1-3 This is the first embodiment of the present invention. This embodiment provides an electrical system with high-voltage DC power supply and emergency function. The intelligent emergency lighting control based on the HVDC high-voltage DC system can achieve faster, more reliable and more integrated emergency control.
[0028] Specifically, such as Figure 1-3 As shown, an electrical system with emergency-enabled high-voltage direct current (HVDC) power supply includes an AC power distribution unit 1, an HVDC unit 2, a main control unit 3, a DC power distribution unit 4, a leakage current detection unit 5, an emergency energy storage unit 6, a communication network 7, a high-voltage direct current (HVDC) grid 8, and distributed lighting nodes 9. The AC power distribution unit 1, HVDC unit 2, main control unit 3, DC power distribution unit 4, and leakage current detection unit 5 are integrated in a control cabinet. The emergency energy storage unit 6, except for the photovoltaic array, is integrated in an energy storage cabinet. The communication network 7 and the high-voltage direct current (HVDC) grid 8 are the core channels supporting system information interaction and power transmission, and are located inside and outside the control cabinet and energy storage cabinet. The energy storage cabinet includes the portion of the emergency energy storage unit excluding the photovoltaic array, which is installed outdoors to receive sunlight. The distributed lighting nodes refer to the lighting fixtures and sensors, installed according to the site conditions.
[0029] AC power distribution unit 1 is connected to HVDC unit 2 and main control unit 3; HVDC unit 2 is connected to main control unit 3, emergency energy storage unit 6 and distributed lighting node 9 via high-voltage DC grid 8; main control unit 3 communicates with HVDC unit 2, emergency energy storage unit 6, DC power distribution unit 4, leakage detection unit 5 and distributed lighting node 9 via communication network 7 to achieve centralized control and monitoring, and to connect the system to the user's local control system or remote APP to achieve intelligent cloud connection; emergency energy storage unit 6 is connected to communication network 7 and high-voltage DC grid 8 to achieve energy storage and emergency power output functions; DC power distribution unit 4 and leakage detection unit 5 are responsible for power distribution and leakage protection of high-voltage DC grid 8 and distributed lighting node 9 behind HVDC unit 2 to ensure personal safety.
[0030] Furthermore, the AC power distribution unit 1 includes a Type B residual current circuit breaker (RCBO), an AC fuse connected in parallel to the main circuit, and a surge protector (SPD) of level T1+2. The RCBO provides protection against AC and smoothed DC leakage current to prevent electric shock accidents, while the AC fuse + SPD provides surge protection at the front end, protecting downstream equipment from surge impacts. The AC power distribution unit 1 is responsible for surge protection of the mains input and Type B residual current protection of the HVDC unit.
[0031] Furthermore, the HVDC unit 2 includes a rectifier module, a DC / DC isolated power supply module, and a hot-swappable control module. With an extremely small size and extremely high energy density, it rectifies the input while reducing harmonic content, improving power quality, and providing a stable DC bus voltage. The isolated DC / DC power supply module effectively protects the personal safety of end users. The N+X redundancy and hot-swappable design of the power supply module improve system reliability and reduce cost and maintenance difficulty.
[0032] Furthermore, the main control unit 3 includes a human-machine interface, a smart gateway, a wireless communication module / DALI controller (three-in-one), and an MCU main control module. The MCU main control module is connected to the human-machine interface, the smart gateway, and the wireless communication module, respectively. The main control unit draws power from both the AC terminal and the high-voltage DC bus, enabling real-time monitoring of the system status under normal and emergency conditions, digital lighting control, and intelligent cloud connection to the user's local main control system or a remote APP. The smart gateway can enable system networking and cloud monitoring of the system in conjunction with an APP; or it can directly connect to the end user's local control system, such as the BACnet building control system.
[0033] Furthermore, the DC power distribution unit 4 includes a DC backup protection switch, a DC surge arrester, and a multi-channel high-voltage DC circuit breaker. The leakage current detection unit 5 includes a shunt trip, a Hall leakage current sensor, and a leakage current detection module. It can realize real-time detection of leakage current in each DC branch, promptly disconnecting leakage current in a single line to protect the safety and reliability of the system; simultaneously, the insulation leakage current detection module uploads data to accurately locate the leakage branch, improving maintenance efficiency.
[0034] Furthermore, the emergency energy storage unit 6 includes a DC / DC converter, a battery pack, and a photovoltaic solar panel; the DC / DC converter is connected to the MCU main control module, and the battery pack and photovoltaic solar panel are connected. The DC / DC converter includes a unidirectional DC / DC converter and a bidirectional DC / DC converter; the unidirectional DC / DC converter is connected to the photovoltaic solar panel, and the bidirectional DC / DC converter is connected to the battery pack. The battery pack can draw power from clean energy sources or the DC bus through the high-voltage DC grid, achieving high energy conversion efficiency while ensuring the system's sustainability and environmental friendliness. Furthermore, it can autonomously provide power in the event of a power outage, ensuring lighting safety. The photovoltaic array of the emergency energy storage unit is installed outdoors to receive sunlight.
[0035] Furthermore, the distributed lighting node 9 includes LED lamps and illuminance sensors or occupancy sensors. Based on the preset scenes of the main controller, the user-defined grouping of each lighting node, and the collection of environmental data from the sensors, more refined digital lighting control is achieved. Alternatively, each node can autonomously adjust its brightness and color temperature according to its preset scenes, achieving energy-saving and comfortable lighting effects. The distributed lighting node 9 allows for custom grouping of nodes, combined with sensor data collection of surrounding environmental information, enabling intelligent control and optimization of the lighting system to reduce energy consumption by up to 50%; it also reduces unnecessary lighting, increasing lamp lifespan, saving energy, protecting the environment, and reducing labor costs.
[0036] Furthermore, the communication network 7 connects each lighting node and control unit. Depending on different user scenarios, it can adopt communication technologies such as wired DALI or wireless BLE Mesh to ensure the real-time performance and reliability of information transmission.
[0037] Furthermore, the high-voltage DC power grid 8 is designed to carry high-voltage DC circuitry and is responsible for transmitting high-voltage DC to the entire lighting system.
[0038] Furthermore, both the bidirectional and unidirectional DC / DC converters employ high-efficiency SiC MOSFET intelligent gate drivers, and both unidirectional and bidirectional conversions utilize zero-voltage conversion soft-switching control, achieving a conversion efficiency of over 95%, thus ensuring high efficiency and reliability of emergency energy storage power conversion.
[0039] The cloud-based control system of this invention includes modes such as a mobile APP and a computer dashboard, which enables remote monitoring of the system, improves personnel safety, saves energy to the maximum extent, and minimizes maintenance costs.
[0040] like Figure 2 The diagram shows the control strategy for the emergency energy storage unit of this utility model.
[0041] Operating Condition 1: When the bus voltage exceeds the required voltage threshold, the photovoltaic array (PV) and HVDC units work together to power the batteries and distributed lighting nodes.
[0042] Operating Condition 2: When a bus voltage failure is detected and the photovoltaic power generation is greater than the load demand, the photovoltaic power generation maintains maximum power point tracking (MPPT) to supply power to the distributed lighting nodes, and the excess energy is used to charge the battery pack.
[0043] Condition 3: When the photovoltaic power generation energy is less than the required energy, the battery storage unit will discharge to make up for the shortfall.
[0044] Condition 4: When there is no sunlight, the photovoltaic power generation unit fails, and the energy storage unit supplies power alone.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-voltage DC power supply electrical system with emergency function, characterized in that: It includes an AC power distribution unit (1), an HVDC unit (2), a main control unit (3), a DC power distribution unit (4), a leakage current detection unit (5), an emergency energy storage unit (6), a communication network (7), a high-voltage DC power grid (8), and a distributed lighting node (9); the AC power distribution unit (1), HVDC unit (2), main control unit (3), DC power distribution unit (4), and leakage current detection unit (5) are integrated in a control cabinet; The AC power distribution unit (1) is connected to the HVDC unit (2) and the main control unit (3); the HVDC unit (2) is connected to the main control unit (3), the emergency energy storage unit (6) and the distributed lighting node (9) for power supply; the main control unit (3) communicates with the HVDC unit (2), the emergency energy storage unit (6), the DC power distribution unit (4), the leakage current detection unit (5) and the distributed lighting node (9) through the communication network (7); the emergency energy storage unit (6) is connected to the communication network (7) and the high voltage DC grid (8).
2. The high-voltage DC power supply electrical system with emergency function according to claim 1, characterized in that: The AC power distribution unit (1) includes a type B residual current circuit breaker, an AC fuse connected in parallel with the main circuit, and a surge protector.
3. The high-voltage DC power supply electrical system with emergency function according to claim 2, characterized in that: The HVDC unit (2) includes a rectifier module, a DC / DC isolated power supply module and a hot-swappable control module.
4. The high-voltage DC power supply electrical system with emergency function according to claim 3, characterized in that: The main control unit (3) includes a human-machine interface, an intelligent gateway, a wireless communication module and an MCU main control module. The MCU main control module is connected to the human-machine interface, the intelligent gateway and the wireless communication module respectively.
5. The high-voltage DC power supply electrical system with emergency function according to claim 4, characterized in that: The DC power distribution unit (4) includes a DC backup protection switch, a DC surge arrester, and a multi-channel high-voltage DC circuit breaker.
6. The high-voltage DC power supply electrical system with emergency function according to claim 5, characterized in that: The leakage detection unit (5) includes a shunt trip, a Hall leakage current sensor, and a leakage detection module.
7. The high-voltage DC power supply electrical system with emergency function according to claim 6, characterized in that: The emergency energy storage unit (6) includes a DC / DC converter, a battery pack, and a photovoltaic solar panel; the DC / DC converter is connected to the MCU main control module, and the battery pack and photovoltaic solar panel are connected; the DC / DC converter includes a unidirectional DC / DC converter and a bidirectional DC / DC converter; the unidirectional DC / DC converter is connected to the photovoltaic solar panel, and the bidirectional DC / DC converter is connected to the battery pack.
8. The high-voltage DC power supply electrical system with emergency function according to claim 7, characterized in that: The distributed lighting node (9) includes LED lights and illuminance sensors or occupancy sensors.
9. The high-voltage DC power supply electrical system with emergency function according to claim 8, characterized in that: The communication network (7) adopts wired DALI or wireless BLE Mesh communication.
10. The high-voltage DC power supply electrical system with emergency function according to claim 9, characterized in that: The DC / DC converter uses a SiC MOSFET smart gate driver.