Modularized compact direct-current control and protection integrated test platform capable of being quickly reconstructed
The modularly designed compact DC control and protection integrated test platform solves the problems of traditional test systems, such as numerous devices, complex wiring, and difficulty in relocation. It enables efficient and flexible DC control and protection testing, reducing costs and time.
Patent Information
- Application Number
- CN202511701750.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-02-06
AI Technical Summary
Existing DC control and protection test systems have a large number of devices, complex wiring, large footprint, are difficult to move and have poor flexibility, resulting in low testing efficiency, high cost and poor reusability.
The compact DC control and protection integrated test platform adopts a modular design. By integrating control and protection devices and redundant cabinets, it achieves rapid connection using aviation fiber optic cables and switches, forming a highly integrated and mobile test system.
It significantly reduces the number of devices and wiring complexity, improves testing efficiency and flexibility, reduces costs and time, and enhances the portability and reusability of the testing platform.
Smart Images
Figure CN121476781A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of DC power transmission simulation test, and particularly relates to a modularized compact DC control and protection integrated test platform capable of being quickly reconfigured. BACKGROUND
[0002] In the existing DC control and protection product integrated test, a functional sub-packaged screen cabinet configuration mode similar to a DC engineering field is adopted, and the control and protection devices and station control systems of each DC station need to be respectively configured with multiple engineering screen cabinets such as pole control screen cabinets, protection screen cabinets and valve control screen cabinets, so as to realize the system integration of the DC control and protection functions of a DC station through a large number of inter-cabinet connections; if a DC test system containing a DC redundant control and a multi-protection system is built, the number of screen cabinets required is at least doubled, and the number and complexity of the inter-cabinet connections will also be multiplied.
[0003] The traditional DC control and protection system test adopts a control and protection engineering screen cabinet distribution mode, and a DC power transmission engineering test platform needs several or even dozens of screen cabinets, which not only occupies a large area, but also has a large amount of wiring and commissioning work during the test system building process, and has high difficulty and long cycle.
[0004] Such a DC control and protection test system is usually highly bound to a specific engineering, and if changes such as a primary system topology change are made, a large amount of re-wiring and debugging work is also required, and the test system restoration operation is also difficult, which greatly limits the reusability and utilization of the DC control and protection test system.
[0005] The test system using DC control and protection distributed engineering screen cabinets is not convenient to move, and once the site needs to be changed, it needs to be disassembled and rebuilt; and if the test system has problems such as loose wiring and damaged interface components, it is difficult to troubleshoot. This results in that the test platform does not have mobility and poor maintainability.
[0006] The following pain points are summarized through the above existing flexible DC control and protection test platform: 1) Complicated wiring: the inter-cabinet connection between the redundant control protection and the main control protection has up to hundreds of optical fibers, and the wiring and disconnection work is time-consuming and error-prone; 2) Equipment redundancy: a set of dedicated redundant test screen cabinets needs to be configured for each end main control screen cabinet, resulting in a large number of devices, a large area, high cost and high maintenance difficulty; 3) Poor flexibility: once the traditional test environment is built, it is difficult to quickly change the configuration to adapt to the needs of different test objects, and the test efficiency is low; 4) Inconvenient to move: the traditional screen cabinet has low integration, and has many external cables, which is difficult to move and quickly deploy. SUMMARY
[0007] The application aims to provide a modular and quickly reconfigurable compact DC control and protection integrated test platform, form a high-integration, quickly reconfigurable and mobile DC transmission compact test platform, improve test efficiency, reduce the cost of the whole device, test cost and time cost, and improve the flexibility of the adjustable DC transmission network topology.
[0008] A modular and quickly reconfigurable compact DC control and protection integrated test platform, the test platform is applied to a two-end or multi-end DC transmission system, and any one end DC station comprises an A cabinet main screen cabinet and / or a B cabinet redundant screen cabinet. The A cabinet main screen cabinet comprises a DC control device, one set of protection device, an acquisition unit, a protection outlet device, an AC field simulation device, a valve control device and a switch. The B cabinet redundant screen cabinet comprises a DC control device, two sets of protection device, an acquisition unit, a protection outlet device and a switch. The A cabinet main screen cabinet can independently realize the DC control and protection function of the DC station. The A cabinet main screen cabinet and the B cabinet redundant screen cabinet can independently realize the redundant control and multiple protection of one DC station.
[0009] Optionally, the A cabinet main screen cabinet and / or the B cabinet redundant screen cabinet further comprises a control server and a wave recording server.
[0010] Optionally, the A cabinet main screen cabinet and the B cabinet redundant screen cabinet are connected through two groups of aviation plug optical cables.
[0011] Optionally, the redundant control, three sets of protection and protection three out of two of the A cabinet main screen cabinet and / or the B cabinet redundant screen cabinet are collected to an aviation plug conversion module through optical fiber tail fibers, and the aviation plug conversion module realizes interactive connection through two aviation plug optical cables.
[0012] Optionally, the A cabinet main screen cabinet and the B cabinet redundant screen cabinet can be arranged according to double-column devices.
[0013] Optionally, the cabinet body of the A cabinet main screen cabinet and the B cabinet redundant screen cabinet has a width of 1500 cm, a depth of 800 cm and a height of 1800 cm.
[0014] Optionally, six groups of lockable universal wheels are installed on the cabinet bottom of the cabinet body of the A cabinet main screen cabinet and the B cabinet redundant screen cabinet.
[0015] Optionally, the switch arranged in the A cabinet main screen cabinet is a monitoring A network switch, the monitoring A network switch collects and connects the control optical fibers that need to interact, and the single set control and protection test system of the multi-end DC transmission system is realized by connecting the switch groups of each A cabinet main screen cabinet. The switches configured in the redundant B cabinet are monitoring B network switches. The monitoring B network switches aggregate and connect the control optical fibers that need to be interacted with. By connecting the switches of each B cabinet redundant panel to form a network, a redundant control and protection test system for a multi-terminal DC transmission system is realized.
[0016] Alternatively, the switches can be interconnected via a pair of optical fibers.
[0017] Optionally, for a dual-end DC transmission system, one DC station is equipped with an A-cabinet main panel cabinet, and the other DC station is equipped with an A-cabinet main panel cabinet to realize a dual-end DC transmission control and protection test environment; an additional B-cabinet redundant panel cabinet is added to be tested in turn with the A-cabinet main panel cabinets at both ends to realize redundant control and multiple protections. For multi-terminal DC transmission systems, each DC station is equipped with one A-cabinet main panel cabinet, plus one B-cabinet redundant panel cabinet, which alternately combines with the A-cabinet main panel cabinet at each end for testing to achieve redundant control and multiple protections. It can be understood that "alternating" means that the B-cabinet redundant panel cabinet can be moved to any DC station at either end, or that the B-cabinet redundant panel cabinet participates in testing alternately in multiple DC stations.
[0018] Beneficial technical effects: 1) Highly compact and integrated: By integrating control and protection test devices and fiber optic aggregation and aviation plug-in modules in a large-capacity cabinet, the DC station-level control and protection test structure is compact and modular, significantly reducing external cables; 2) Speeding up and increasing efficiency: The time required to build hundreds of wires has been reduced from several hours or even days to minutes, greatly improving the speed of test platform construction and testing efficiency; 3) Flexible reconfiguration and strong versatility: A set of redundant test cabinets can be easily moved and quickly combined with any main control test cabinet to achieve "one cabinet to multiple ends", reducing the number of redundant cabinets and equipment; the main test cabinet and redundant test cabinets can be used as general basic modules to flexibly build test platforms with different topology requirements. 4) Cost savings: Significantly reduces the number of test cabinets and the floor space occupied, and lowers the overall testing cost and time cost; 5) Easy to deploy and expand: The movable cabinet design and minimal cabinet connection make the deployment, relocation and expansion of the test platform very convenient. Attached Figure Description
[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the front layout of cabinet A in embodiment A of the present invention.
[0020] Figure 2 This is a schematic diagram of the reverse layout of cabinet A in embodiment A of the present invention.
[0021] Figure 3 This is a schematic diagram of the front layout of cabinet B in embodiment B of the present invention.
[0022] Figure 4 This is a schematic diagram of the reverse layout of cabinet B in embodiment B of the present invention.
[0023] Figure 5 This is a schematic diagram of the functional module layout of cabinet A in the DC control and protection compact integrated test cabinet according to an embodiment of the present invention.
[0024] Figure 6 This is a schematic diagram of the functional module layout of cabinet B, a compact integrated DC control and protection test cabinet according to an embodiment of the present invention. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.
[0026] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0027] Example 1 In the current DC transmission network, the integration testing of DC control and protection products at any DC station adopts the configuration of functional modular cabinets at the DC engineering site. Each DC station's control, protection devices, and station control system require multiple engineered cabinets such as pole control cabinets, protection cabinets, and valve control cabinets. The system integration of DC control and protection functions of a DC station is achieved through a large number of cabinet connections. In addition, building a DC test system with DC redundant control and multiple protection systems requires at least double the number of cabinets, and the number and complexity of cabinet connections will also increase exponentially. This results in high equipment costs, complex wiring, large footprint, and complex and inaccurate testing for DC control and protection product integration testing.
[0028] This invention provides a modular and rapidly reconfigurable compact integrated DC control and protection test platform.
[0029] The testing platform disclosed in this invention comprises at least three main parts: 1. A real-time digital simulation system is used as the dynamic data source to simulate the real-time operating status of the flexible DC transmission system. The test platform is designed with a multi-functional interface based on the Aurora protocol communication of the real-time digital simulation system, covering the interface requirements of all objects under test.
[0030] 2. A large-capacity, movable control cabinet was designed as the core physical carrier, integrating a complete set of control, protection, and auxiliary testing devices. Furthermore, a large number of fiber optic pigtails from the redundant control and protection rooms are integrated within the cabinet and converged on a dedicated aviation connector module. The detailed design and procurement of the control cabinet are as follows: Main screen cabinet A and redundant screen cabinet B: Cabinet A includes a DC control device, a set of protection devices, an acquisition unit, a protection output device, an AC field simulation device, and a valve control device. Optionally, it may also include a control server, a waveform recording server, and a switch. N is a natural number.
[0031] Cabinet B includes a DC control device, two sets of protection devices, an acquisition unit, and a protection output device. Optionally, it may also include a control server, a waveform recording server, and a switch.
[0032] Understandably, cabinet A is a test cabinet that integrates the control and protection equipment of a DC station into a single panel cabinet, independently realizing the control and protection functions of a DC station; cabinet B is a test panel cabinet for redundant control and multiple protection supplementary equipment.
[0033] Two sets of aerial fiber optic cables connect cabinet A and cabinet B, quickly enabling a test system that meets the testing requirements of dual control systems, three protection systems, and two-out-of-three protection outputs for a DC station.
[0034] Optionally, a two- or multi-terminal DC transmission system can use two or more A cabinets, interconnected by switches or networks, to realize a test system that supports the testing of basic control and protection functions of two or more DC stations; alternatively, two or more sets of AB redundant test cabinets can be combined, with each A cabinet and B cabinet connected to the network by its own switches, to quickly build a test system that supports the testing of two or more redundant control and multiple protection functions.
[0035] Understandably, multi-terminal DC transmission systems have three or more terminals.
[0036] For a dual-end DC transmission system, one end of the DC station is equipped with a main A cabinet, and the other end of the DC station is equipped with a redundant B cabinet. For multi-terminal DC transmission systems, one DC station is configured with one A-cabinet main panel cabinet and one B-cabinet redundant panel cabinet, while the remaining DC stations are configured with one A-cabinet main panel cabinet. This minimizes equipment costs, system network complexity, and floor space. This invention, through a simplified testing platform, reduces the complexity of the massive fiber optic connections between traditional DC station panel cabinets, and improves the flexibility of DC transmission network topology adjustments.
[0037] The test cabinet features a custom-designed double-row layout, with a width of 1500cm, a depth of 800cm, and a height of 1800cm. Six sets of lockable casters are installed at the bottom. This allows for the compact arrangement of all control and protection equipment for a DC station within a single cabinet, achieving integrated DC control and protection, and facilitating easy relocation. All fiber optic interconnection requirements between the main control cabinet and the redundant cabinet, including redundant control, three sets of protection, and the protection three-out-of-two configuration, are gathered at the aviation plug conversion module via fiber optic pigtails in both the main control cabinet A and the redundant cabinet B. Interconnection can be achieved through two aviation plug optical cables.
[0038] The main cabinet A is equipped with a monitoring A-network switch, which aggregates and connects the control optical fibers that need to interact. By connecting the switches of each A-cabinet to form a network, a single set of control and protection test system for a multi-terminal DC transmission system is realized.
[0039] The redundant cabinet B is equipped with a monitoring B network switch, which aggregates and connects the control optical fibers that need to interact. By connecting the switches of each B cabinet to form a network, a redundant control and protection test system for a multi-terminal DC transmission system is realized.
[0040] By adopting a combination of multiple main control cabinets (A cabinet) and redundant cabinets (B cabinet), and by networking the switches in cabinets A and B separately, redundant control of multi-terminal DC transmission systems and testing systems for multiple protection systems can be realized.
[0041] 3. High-speed interconnection system: 1) Multi-core aviation optical cable: The physical connection of the redundancy test environment can be completed within one minute through two multi-core aviation optical cables; 2) Monitoring Network: Only one pair of optical fibers is needed to interconnect the monitoring switches, which can be flexibly expanded to build a multi-terminal collaborative testing environment.
[0042] The test platform's innovative design concepts of "modularity," "reconfigurability," "rapid connectivity," and "high integration" enable systematic optimization and integration of the overall test system architecture, connection methods, and deployment processes, resulting in practicality and efficiency.
[0043] Preferably, the modular and rapidly reconfigurable test platform is a modular test system architecture consisting of a "mobile main control cabinet + general redundant test cabinet" interconnected by "aviation fiber optic cable + monitoring network". This architecture realizes a fundamental transformation of the test environment from "fixed and dedicated" to "flexible and universal".
[0044] Preferably, the high-speed fiber optic interconnection solution based on the air-mounted connector adapter module incorporates an in-cabinet fiber optic integration and air-mounted connector adapter module. This transforms the traditionally complex external fiber optic connections into an internally integrated, "plug-and-play" method using two multi-core air-mounted connector optical cables. This is the core technology for achieving "connection within one minute".
[0045] Preferably, the high-capacity, mobile, integrated cabinet is designed to integrate control and protection equipment, auxiliary devices, fiber optic aggregation modules, and monitoring switches into a single mobile cabinet. It is not only a container but also a fully functional, plug-and-play standardized test unit, providing a physical basis for rapid reconfiguration.
[0046] Preferably, the extremely simplified multi-terminal collaborative test network construction, by configuring a monitoring switch in the main control cabinet and interconnecting it with only one pair of optical fibers, constructs an extremely simple and efficient multi-terminal control and protection collaborative test network, replacing the traditional complex communication wiring and simplifying system configuration.
[0047] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.
[0048] It should be noted that the sequence numbers of the embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0049] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, and any combination of embodiments or solutions, are similarly included within the patent protection scope of the present invention.
Claims
1. A modular and rapidly reconfigurable compact DC control and protection integrated test platform, characterized in that, The test platform is used in dual-end or multi-end DC transmission systems. Any one-end DC station includes the main screen cabinet A, and multi-end DC stations share one redundant screen cabinet B. Cabinet A's main screen cabinet includes a DC control device, a set of protection devices, a data acquisition unit, a protection output device, an AC field simulation device, a valve control device, and a switch. The redundant cabinet B includes a DC control device, two sets of protection devices, a data acquisition unit, a protection output device, and a switch. The main control panel of cabinet A can independently realize the DC control and protection functions of the DC station; The main control cabinet (A cabinet) and the redundant control cabinet (B cabinet) can independently achieve redundant control and multiple protections for a DC station.
2. The testing platform as described in claim 1, characterized in that, The main screen cabinet of cabinet A and / or the redundant screen cabinet of cabinet B also include a control server and a waveform recording server.
3. The testing platform as described in claim 1, characterized in that, The main screen cabinet of cabinet A and the redundant screen cabinet of cabinet B are connected by two sets of aviation fiber optic cables.
4. The testing platform as described in claim 1, characterized in that, The redundancy control, three sets of protection, and protection three-out-of-two are all gathered to the aviation plug conversion module through fiber optic pigtails. The aviation plug conversion module is interconnected through two aviation plug optical cables.
5. The testing platform as described in claim 1, characterized in that, The main screen cabinet (A cabinet) and redundant screen cabinet (B cabinet) can be arranged in a double-row configuration.
6. The testing platform as described in claim 1, characterized in that, The main screen cabinet (Cabinet A) and the redundant screen cabinet (Cabinet B) have a width of 1500cm, a depth of 800cm, and a height of 1800cm.
7. The testing platform as described in claim 6, characterized in that, The main screen cabinet (cabinet A) and the redundant screen cabinet (cabinet B) are equipped with six sets of lockable casters at the bottom of their cabinets.
8. The testing platform as described in claim 1, characterized in that, The switch configured in the main screen cabinet of cabinet A is a monitoring A network switch. The monitoring A network switch aggregates and connects the control optical fibers that need to be interacted. By connecting the switches of each main screen cabinet of cabinet A to form a network, a single set of control and protection test system for multi-terminal DC transmission system is realized. The switches configured in the redundant B cabinet are monitoring B network switches. The monitoring B network switches aggregate and connect the control optical fibers that need to be interacted with. By connecting the switches of each B cabinet redundant panel to form a network, a redundant control and protection test system for a multi-terminal DC transmission system is realized.
9. The testing platform as described in claim 8, characterized in that, The switches are interconnected via a pair of optical fibers.
10. The testing platform as described in claim 1, characterized in that, For a dual-end DC transmission system, one DC station is equipped with an A-cabinet main panel cabinet, and the other DC station is equipped with an A-cabinet main panel cabinet to realize the dual-end DC transmission control and protection test environment; an additional B-cabinet redundant panel cabinet is added to be tested in turn with the A-cabinet main panel cabinets at both ends to realize redundant control and multiple protections. For multi-terminal DC transmission systems, each DC station is equipped with one A-cabinet main panel cabinet and one B-cabinet redundant panel cabinet, which are used in turn to combine with the A-cabinet main panel cabinet of each terminal for testing to achieve redundant control and multiple protections.