Station area power-on operation interface device suitable for multiple working conditions

Abstract

The utility model discloses a station area uninterruptible operation interface device suitable for multiple working conditions. The station area uninterruptible operation interface device comprises a grid-connected box, a synchronous operation box and an independent communication assembly used for being in communication connection with a station area generator car. The grid-connected box is provided with two grid-connected switches, and one end of each grid-connected switch is used for being connected with a power grid. A first synchronous switch and a second synchronous switch are arranged on the synchronous operation box, and the independent communication assembly is in communication connection with the synchronous operation box; the other end of one grid-connected switch is electrically connected with one end of the first synchronous switch, and the other end of the other grid-connected switch is used for being electrically connected with one end of the second synchronous switch or the other end of the first synchronous switch; the other end of the grid-connected switch, the two ends of the first synchronous switch and the two ends of the second synchronous switch are provided with the same standard interface. According to the utility model, grid connection, synchronous operation and power generation vehicle communication are independently arranged, different wiring structures are adopted in different working conditions, the system is suitable for non-power-cut operation in a zone area under multiple working conditions, and the maintenance operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power maintenance, in particular to a live working interface device for a distribution substation applicable to multiple working conditions. Background Art

[0002] In the current live maintenance operation of the distribution substation, the access of the power generation vehicle depends on manual step-by-step operation, involving multiple processes such as grid connection of the power generation vehicle, disconnection of the urban power grid, phase comparison, and power matching. The single operation takes a long time and requires the cooperation of multiple types of work.

[0003] During the live maintenance operation of the distribution substation, the operators often encounter various complex working conditions. For example, when the load of the distribution substation is large, multiple power generation vehicles need to operate in parallel; some power generation vehicles are equipped with built-in synchronization devices, while some are not; there are also differences in the communication ports and communication protocols of different power generation vehicles; these working conditions make the cable connection operation inconvenient and the parallel operation expansion difficult, increasing the difficulty of the maintenance operation and affecting the maintenance operation efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a live working interface device for a distribution substation applicable to multiple working conditions, which can overcome the difficulties of different working conditions in the live maintenance operation of the distribution substation at the same time, improve the flexibility and convenience of the wiring in the maintenance operation, and improve the maintenance operation efficiency.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0006] A live working interface device for a distribution substation applicable to multiple working conditions includes a grid connection box, a synchronization operation box, and an independent communication component for communicating and connecting with the power generation vehicle of the distribution substation;

[0007] Two grid connection switches are provided on the grid connection box, and one end of all the grid connection switches is used for connecting to the power grid;

[0008] A first synchronization switch and a second synchronization switch are provided on the synchronization operation box, and the independent communication component is communicatively connected to the synchronization operation box;

[0009] The other end of one grid connection switch is electrically connected to one end of the first synchronization switch, and the other end of the other grid connection switch is used for electrically connecting to one end of the second synchronization switch or the other end of the first synchronization switch;

[0010] The other end of the grid connection switch, both ends of the first synchronization switch, and both ends of the second synchronization switch are configured with the same standard interface;

[0011] The independent communication component includes a receiving module, a PID adjustment module, an adjustment conversion module, and a sending module;

[0012] The synchronization operation box is communicatively connected to the receiving module, the receiving module is communicatively connected to the PID adjustment module, and the PID adjustment module is communicatively connected to the sending module through the adjustment conversion module;

[0013] The sending module is used for communicatively connecting to the substation power generation vehicle;

[0014] The independent communication component includes a communication box body;

[0015] The receiving module and the sending module are both detachably arranged on the communication box body.

[0016] Further, a synchronization operation control module is provided inside the synchronization operation box;

[0017] The synchronization operation control module is communicatively connected to the independent communication component, and the synchronization operation control module is electrically connected to the control end of each synchronization switch.

[0018] Further, a power generation vehicle grid connection button, a power generation vehicle off-grid button, and an anti-synchronization grid connection button are further provided on the synchronization operation box;

[0019] The synchronization operation control module is electrically connected to the power generation vehicle grid connection button, the power generation vehicle off-grid button, and the anti-synchronization grid connection button respectively.

[0020] Further, the independent communication component further includes a multi-machine cooperation module;

[0021] The receiving module is communicatively connected to the multi-machine cooperation module, and the multi-machine cooperation module is communicatively connected to the PID adjustment module.

[0022] Further, the independent communication component further includes a synchronization data measurement module;

[0023] The receiving module is communicatively connected to the synchronization data measurement module, and the synchronization data measurement module is communicatively connected to the PID adjustment module.

[0024] Further, a short connection cable is further included;

[0025] The port of the short connection cable is adapted to the standard interface.

[0026] Further, the first synchronization switch and the second synchronization switch are both built-in switches.

[0027] The beneficial effects of the present utility model are as follows: It provides an interface device for non-stop power operation in a transformer substation applicable to multiple working conditions, with the grid connection, synchronization operation, and communication with a power generation vehicle being separately arranged. The same standard interface is adopted for the grid connection switch in the grid connection box and the synchronization switch in the synchronization operation box, so as to facilitate different wiring structures among the grid connection box, the synchronization operation box, and the power generation vehicle when facing situations where the power generation vehicle has synchronization, the power generation vehicle does not have synchronization, and multiple power generation vehicles operate in parallel, improving the flexibility and convenience of wiring for maintenance operations. An appropriate independent communication component is selected to communicate with the power generation vehicle, overcoming the compatibility problem of communication protocols, being applicable to non-stop power operation in a transformer substation under multiple working conditions, and improving the efficiency of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. 6 is a wiring schematic diagram of an interface device for non-stop power operation in a transformer substation applicable to multiple working conditions of the present utility model when applied to a working condition where the power generation vehicle does not have a synchronization device;

[0029] Figure 2 FIG. 10 is a wiring schematic diagram of an interface device for non-stop power operation in a transformer substation applicable to multiple working conditions of the present utility model when applied to a working condition where the power generation vehicle has a synchronization device;

[0030] Figure 3 FIG. 14 is a wiring schematic diagram of an interface device for non-stop power operation in a transformer substation applicable to multiple working conditions of the present utility model when applied to a working condition where multiple power generation vehicles operate in parallel;

[0031] Figure 4 FIG. 18 is an internal structure schematic diagram of an independent communication component of an interface device for non-stop power operation in a transformer substation applicable to multiple working conditions of the present utility model;

[0032] Figure 5 FIG. 22 is a schematic diagram showing that the synchronization operation control module of an interface device for non-stop power operation in a transformer substation applicable to multiple working conditions of the present utility model is electrically connected to the grid connection button of the power generation vehicle, the off-grid button of the power generation vehicle, and the anti-synchronization grid connection button respectively.

[0033] LABEL DESCRIPTION:

[0034] 1. Grid connection box; 2. Synchronization operation box; 3. Independent communication component; 4. Power generation vehicle;

[0035] 31. Receiving module; 32. PID adjustment module; 33. Adjustment conversion module; 34. Sending module; 35. Multi-machine cooperation module; 36. Synchronization data measurement module;

[0036] 41. Synchronization operation control module; 42. Grid connection button of the power generation vehicle; 43. Off-grid button of the power generation vehicle; 44. Anti-synchronization grid connection button;

[0037] BWK1 and BWK2, grid connection switch;

[0038] K1, the first synchronization switch; K2, the second synchronization switch; K3, the grid switch. Detailed implementation

[0039] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the implementation manners and with the accompanying drawings.

[0040] Please refer to Figures 1 to 5 , a non-stop power operation interface device for a distribution substation applicable to multiple working conditions, including a grid connection box 1, a synchronization operation box 2, and an independent communication component 3 for communicating with a distribution substation generator truck 4;

[0041] Two grid connection switches are provided on the grid connection box 1, and one end of all the grid connection switches is used to connect to the grid;

[0042] A first synchronization switch K1 and a second synchronization switch K2 are provided on the synchronization operation box 2, and the independent communication component 3 is communicatively connected to the synchronization operation box 2;

[0043] The other end of one of the grid connection switches is electrically connected to one end of the first synchronization switch K1, and the other end of the other grid connection switch is used to be electrically connected to one end of the second synchronization switch K2 or the other end of the first synchronization switch K1;

[0044] The other end of the grid connection switch, both ends of the first synchronization switch K1, and both ends of the second synchronization switch K2 are configured with the same standard interface.

[0045] As can be seen from the above description, the beneficial effects of the present utility model are as follows: The three parts of grid connection, synchronization operation, and communication with the generator truck 4 are separately set. The same standard interface is adopted for the grid connection switches of the grid connection box 1 and the synchronization switches of the synchronization operation box 2, so as to facilitate different wiring structures among the grid connection box 1, the synchronization operation box 2, and the generator truck 4 when the generator truck 4 has synchronization, the generator truck 4 does not have synchronization, and multiple generator trucks 4 operate in parallel, improving the wiring flexibility and convenience of the maintenance operation, and selecting a suitable independent communication component 3 to communicate with the generator truck 4 to overcome the communication protocol compatibility problem, being applicable to non-stop power operation of distribution substations in multiple working conditions, and improving the maintenance operation efficiency.

[0046] In the above content, the statement of "separately set" is relative to the "integrated" approach of the existing device, that is, through a modular method, the entire non-stop power operation interface device for the distribution substation is split into a grid connection box, a synchronization operation box, and an independent communication component, which can be freely combined on-site according to needs to adapt to different on-site requirements, rather than the existing mainstream "integrated" method. To cope with different on-site requirements, many different whole machine products need to be made.

[0047] Further, a synchronization operation control module is provided inside the synchronization operation box 2;

[0048] The synchronization operation control module is communicatively connected to the independent communication component 3, and the synchronization operation control module is electrically connected to the control end of each synchronization switch respectively.

[0049] As can be seen from the above description, through the built-in synchronization operation control module, precise control and intelligent management of the synchronization switch can be achieved. When facing complex and changeable operating conditions, this module can automatically adjust the closing and opening states of the synchronization switch according to the real-time operating parameters such as voltage, frequency, and phase obtained from the power generation vehicle 4 by the independent communication component 3, ensuring smooth grid connection between the power generation vehicle 4 and the power grid; without the need for operators to manually adjust the synchronization switch frequently, the system can quickly complete the synchronization operation according to the preset logic and real-time data, greatly shortening the operation time and improving the overall efficiency of power outage-free operation in the substation area.

[0050] Further, a power generation vehicle grid connection button 42, a power generation vehicle off-grid button 43, and an anti-synchronization grid connection button 44 are also provided on the synchronization operation box 2;

[0051] The synchronization operation control module is electrically connected to the power generation vehicle grid connection button 42, the power generation vehicle off-grid button 43, and the anti-synchronization grid connection button 44 respectively.

[0052] As can be seen from the above description, the deep integration of the buttons and the synchronization operation control module realizes the organic combination of manual operation and intelligent control; operators can flexibly choose manual operation according to actual operation requirements, reducing the operation threshold, expanding the scope of applicable personnel, and further improving the overall efficiency of power outage-free operation in the substation area.

[0053] Further, the independent communication component 3 includes a receiving module 31, a PID adjustment module 32, an adjustment conversion module 33, and a sending module 34;

[0054] The synchronization operation box 2 is communicatively connected to the receiving module 31, the receiving module 31 is communicatively connected to the PID adjustment module 32, and the PID adjustment module 32 is communicatively connected to the sending module 34 through the adjustment conversion module 33;

[0055] The sending module 34 is used to be communicatively connected to the power generation vehicle 4 in the substation area.

[0056] As can be seen from the above description, the receiving module 31 can stably obtain the control instructions and parameter requirements sent by the synchronous operation box 2 in real time, laying a reliable data foundation for the entire communication process. As the core processing unit, the PID adjustment module 32 can, based on the received data, use the proportional-integral-derivative control algorithm to dynamically adjust the operating parameters of the power generation vehicle 4. When parameters such as the voltage and frequency output by the power generation vehicle 4 fluctuate, the PID adjustment module 32 can quickly calculate the optimal adjustment amount to achieve refined control of the power generation vehicle 4 and ensure that its output parameters always match the grid requirements.

[0057] Furthermore, the independent communication component 3 further includes a multi-machine cooperation module 35;

[0058] The receiving module 31 is communicatively connected to the multi-machine cooperation module 35, and the multi-machine cooperation module 35 is communicatively connected to the PID adjustment module 32.

[0059] As can be seen from the above description, the multi-machine cooperation module 35 provides strong technical support for the complex working conditions of multiple power generation vehicles 4 running in parallel. In the multi-machine parallel scenario, this module can, according to the operating data of the power generation vehicle 4, such as output power, load rate, working status, etc., through intelligent algorithms, uniformly schedule and optimize the operating parameters of multiple power generation vehicles 4. And coordinating the control of the operating parameters of multiple power generation devices belongs to the prior art. For example, in the Chinese patent document with the publication number CN117039933A.

[0060] Furthermore, the independent communication component 3 further includes a synchronous data measurement module 36;

[0061] The receiving module 31 is communicatively connected to the synchronous data measurement module 36, and the synchronous data measurement module 36 is communicatively connected to the PID adjustment module 32.

[0062] As can be seen from the above description, based on the data collected by the synchronous data measurement module 36, the PID adjustment module 32 can quickly and accurately calculate the adjustment parameters required by the power generation vehicle 4 under the current working conditions. For example, when the synchronous data measurement module 36 detects that the frequency deviation between the power generation vehicle 4 and the grid exceeds the allowable range, the PID adjustment module 32 can immediately generate corresponding adjustment instructions according to the preset control strategy, and feedback them to the power generation vehicle 4 through the adjustment conversion module 33 and the sending module 34 to achieve dynamic adjustment of the output frequency of the power generation vehicle 4 and ensure its stable synchronization with the grid, significantly improving the smoothness and reliability of the grid connection process.

[0063] Furthermore, the independent communication component 3 includes a communication box body;

[0064] Both the receiving module 31 and the sending module 34 are detachably arranged on the communication box body.

[0065] As can be seen from the above description, in the live working of the transformer substation area, power generation vehicles 4 of different brands and models often adopt different communication protocols, which places extremely high requirements on the compatibility of communication components. The detachable design of the receiving module 31 and the transmitting module 34 enables quick adaptation to multiple communication protocols. When connecting to a power generation vehicle 4 with a specific communication protocol, technicians only need to disassemble the original module and replace it with a communication module that supports the corresponding protocol to establish a stable data interaction channel. For example, if a certain power generation vehicle 4 uses a proprietary communication protocol, by replacing the receiving module 31 and the transmitting module 34 that are compatible with this protocol, the device can quickly achieve seamless docking with the power generation vehicle 4, avoiding communication interruptions caused by protocol incompatibility and significantly improving the adaptability of the device to different power generation vehicle 4 equipment.

[0066] Furthermore, it also includes a short connecting cable;

[0067] The ports of the short connecting cable are adapted to the standard interfaces.

[0068] Furthermore, both the first synchronization switch K1 and the second synchronization switch K2 are built-in switches.

[0069] As can be seen from the above description, by preparing a short connecting cable in advance, when the actual working conditions at the operation site are understood, the short connecting cable can be used to short-circuit between the grid connection switch, the first synchronization switch K1 or the second synchronization switch K2 first, and then connect to the power generation vehicle 4, improving the wiring convenience and being applicable to different working conditions.

[0070] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is:

[0071] An interface device for live working of the transformer substation area applicable to multiple working conditions includes a grid connection box 1, a synchronization operation box 2, and an independent communication component 3 for communicating with the power generation vehicle 4 in the transformer substation area; two grid connection switches are provided on the grid connection box 1, and one end of all the grid connection switches is used to connect to the power grid; a first synchronization switch K1 and a second synchronization switch K2 are provided on the synchronization operation box 2; one end of one grid connection switch is electrically connected to one end of the first synchronization switch K1, and the other end of the other grid connection switch is used to be electrically connected to one end of the second synchronization switch K2 or the other end of the first synchronization switch K1; the other end of the grid connection switch, both ends of the first synchronization switch K1, and both ends of the second synchronization switch K2 are configured with the same standard interface. Among them, the standard interface can be selected as an aviation plug, including four terminals A, B, C, and N. Among them, regarding the control ends of the synchronization switch K1 and the second synchronization switch K2, a switch structure triggered by a relay, a microcomputer device, or an external signal can be adopted; for example, when using a relay, the port of the relay for receiving an external signal and triggering the relay to act is electrically connected to the synchronization operation control module 41 in the synchronization operation box 2.

[0072] Combined Figure 1 As shown, the synchronization operation control module 41 belongs to a relatively mature technical module in the industry, so the specific internal circuit structure and internal connection relationship are not introduced in detail. Specifically, reference can be made to Chinese patent documents with the publication number CN116111639A, titled "A Method and Controller for Synchronous Grid Connection of a Power Generation Vehicle while Energized", or Chinese patent documents with the application number CN202311142343.7, titled "Synchronous Grid Connection Control Platform Device for Power Generation Equipment".

[0073] Combined Figures 1 to 3 , the wiring process of a non-stop power operation interface device applicable to multiple working conditions under different working conditions includes:

[0074] 1. The power generation vehicle 4 does not carry a synchronization device

[0075] As Figure 1 shown, one end of a grid connection switch far from the power grid is connected to one end of the first synchronization switch K1, and the other end of the grid connection switch far from the power grid is connected to one end of the second synchronization switch K2; the other ends of the first synchronization switch K1 and the second synchronization switch K2 are short-circuited and then connected to the power generation vehicle 4.

[0076] 2. The power generation vehicle 4 carries a synchronization device

[0077] As Figure 2 shown, one end of a grid connection switch far from the power grid is connected to one end of the first synchronization switch K1, and the other end of the grid connection switch far from the power grid is short-circuited with the other end of the first synchronization switch K1 and then connected to the switch of the synchronization device on the power generation vehicle 4.

[0078] 3. Multiple power generation vehicles 4 operate in parallel

[0079] As Figure 3 shown, the synchronization operation box 2 corresponds to the power generation vehicle 4 one by one; one end of a grid connection switch far from the power grid is simultaneously connected to one end of the first synchronization switch K1 of each synchronization operation box 2, and the other end of the grid connection switch far from the power grid is simultaneously connected to one end of the second synchronization switch K2 of each synchronization operation box 2; the other ends of the first synchronization switch K1 and the second synchronization switch K2 of each synchronization operation box 2 are short-circuited and then connected to the corresponding power generation vehicle 4.

[0080] For the application scenario of multiple power generation vehicles, it should be noted that this application cannot adapt to the scenario where multiple power generation vehicles with different communication protocols operate in parallel. When the communication protocols of the power generation vehicles in the power distribution area are different, multiple non-stop power operation interface devices of this application need to be configured. The non-stop power operation device of this application belongs to a mobile device. Here, it is emphasized how to quickly adapt to the communication requirements of power generation vehicles in different power distribution areas when operating in different power distribution areas.

[0081] In this embodiment, a short connection cable is further included; the port of the short connection cable is adapted to the standard interface for wiring during the above short connection process.

[0082] Please refer to Figures 1 to 3 and Figure 5 , the second embodiment of the present utility model is:

[0083] A non-stop power operation interface device for a transformer substation applicable to multiple working conditions. On the basis of the above-mentioned first embodiment, a synchronization operation control module 41 is provided in the synchronization operation box 2; the synchronization operation control module 41 is communicatively connected to the independent communication component 3, and the synchronization operation control module 41 is electrically connected to the control end of each synchronization switch respectively. And, a power generation vehicle grid connection button 42, a power generation vehicle off-grid button 43 and an anti-synchronization grid connection button 44 are further provided on the synchronization operation box 2; the synchronization operation control module 41 is electrically connected to the power generation vehicle grid connection button 42, the power generation vehicle off-grid button 43 and the anti-synchronization grid connection button 44 respectively. Specifically as Figure 5 shown, the three buttons of the power generation vehicle grid connection button 42, the power generation vehicle off-grid button 43 and the anti-synchronization grid connection button 44 all include two terminals, one end is respectively connected to the three inputs IN1, IN2, IN3 of the synchronization operation control module 41, and the other end is short-circuited and then connected to the COM common terminal. When the button is pressed, the two terminals of the switch are conducted, and the corresponding IN1, IN2, IN3 and the COM terminal are conducted, generating a switch signal to the synchronization operation control module 41. After detecting the switch signal, the synchronization operation control module 41 considers that the button is in the pressed state.

[0084] In this embodiment, the overhaul operation process of a non-stop power operation interface device for a transformer substation applicable to multiple working conditions is as follows:

[0085] First, disconnect the grid connection switches BWK1 and BWK2, and wire according to any of the schematic diagrams in Figures 1 to 3 according to the scene requirements of different working conditions in the first embodiment; check and confirm that the wiring is correct, and then close the grid connection switches BWK1 and BWK2;

[0086] Secondly, press the power generation vehicle grid connection button 42. At this time, the synchronization operation box 2 will automatically check the synchronization conditions. If the synchronization is not met, adjust the power generation vehicle 4 until synchronization is achieved. After confirming synchronization, automatically close the second synchronization switch K2 ( Figure 1 and Figure 3 in the case of) or the switch of the synchronization device on the power generation vehicle 4 ( Figure 2 in the case of), and disconnect the grid switch K3 after confirming that the second synchronization switch K2 is closed;

[0087] Thirdly, press the power generation vehicle off-grid button 43; at this time, start the overhaul work of the transformer substation until the overhaul is completed;

[0088] Then, after the maintenance is completed, press the anti-synchronizing grid connection button 44. At this time, the synchronization operation box 2 will check and adjust the synchronization between the power grid and the power generation vehicle 4 again. After the synchronization is satisfied, close the first synchronization switch K1;

[0089] Finally, close the power grid switch K3. After confirming the closing, automatically disconnect the first synchronization switch K1 and the second synchronization switch K2, and shut down the power generation vehicle 4; Remove the on-site wiring and disconnect the grid connection switch BWK1 and the grid connection switch BWK2. Among them, both the first synchronization switch K1 and the second synchronization switch K2 have switch status indicators to show whether they are in the open or closed state currently, which is an inherent property of the switch.

[0090] In this embodiment, synchronization check and load regulation are a commonly used technology in power grid synchronization control. It is considered that the synchronization conditions are met only when the voltage, frequency, and phase are qualified, and the load is regulated. This method is also mentioned in multiple patents. For example, in the Chinese patent document with the application number CN202410827024.8, titled "A Method and Device for Synchronous Grid Connection Transfer of a Power Generation Vehicle for Live Working", and in the Chinese patent document with the publication number CN116111639A, titled "A Method and Controller for Synchronous Grid Connection Control of a Power Generation Vehicle with Electricity".

[0091] Among them, both the first synchronization switch K1 and the second synchronization switch K2 are built-in switches, and the synchronization operation control module 41 realizes automatic control according to the preset logic.

[0092] It can be understood that the above operations such as verifying the synchronization conditions and controlling the switch closing can be realized by using existing algorithms. Those skilled in the art are familiar with how to use these algorithms to execute the above automation steps, so they will not be elaborated here.

[0093] Please refer to Figure 4 , Embodiment 3 of the present utility model is:

[0094] A live working interface device for a distribution substation applicable to multiple working conditions. On the basis of the above Embodiment 1 or 2, the independent communication component 3 includes a receiving module 31, a synchronization data measurement module 36, a multi-machine cooperation module 35, a PID adjustment module 32, an adjustment conversion module 33, and a sending module 34; The synchronization operation box 2 is communicatively connected to the receiving module 31, the receiving module 31 is communicatively connected to the PID adjustment module 32, and the PID adjustment module 32 is communicatively connected to the sending module 34 through the adjustment conversion module 33; The sending module 34 is used to be communicatively connected to the distribution substation power generation vehicle 4. The receiving module 31 is communicatively connected to the multi-machine cooperation module 35, and the multi-machine cooperation module 35 is communicatively connected to the PID adjustment module 32. The receiving module 31 is communicatively connected to the synchronization data measurement module 36, and the synchronization data measurement module 36 is communicatively connected to the PID adjustment module 32.

[0095] In this embodiment, the PID adjustment module 32 receives the relevant data (such as voltage amplitude, frequency deviation, phase angle difference, etc.) measured by the synchronous data measurement module 36 for the grid connection of the power generation vehicle 4 and the multi-machine operation related information provided by the multi-machine cooperation module 35. According to these data, the PID adjustment module 32 calculates the parameters required for adjusting the power generation vehicle 4 according to a preset control algorithm (proportional-integral-derivative control algorithm) to achieve the matching of electrical parameters such as voltage and frequency output by the power generation vehicle 4 with the power grid, ensuring that the power generation vehicle 4 can be stably connected to the power grid or maintain coordination during multi-machine cooperative operation.

[0096] Moreover, since the parameters output by the PID adjustment module 32 may be digital quantities or data in a specific format, and the control system of the power generation vehicle 4 requires signals of a specific type and format for actual adjustment operations, the adjustment conversion module 33 converts these parameters. For example, it converts digital signals into analog signals, or adjusts the signal format and level so that they can be accurately recognized and executed by the control equipment of the power generation vehicle 4, thereby achieving precise control of the power generation vehicle 4 and meeting the requirements of non-stop power operation in different working conditions in the distribution area.

[0097] Among them, the PID adjustment module 32 is a software processing unit. The PID adjustment algorithm is a classic control algorithm, and its basic principle can be summarized as: detecting the voltage and frequency output by the power generation vehicle in real time, calculating the difference from the target value, and adjusting the output voltage and frequency of the power generation vehicle through feedback control to gradually approach the target value. Chinese patent document with application number CN201420521673.7, titled "An Automatic Synchronous Device for Generator Grid Connection" and Chinese patent document with application number CN200820158824.1, titled "Multi-channel Automatic Synchronous Device" both use PID adjustment for synchronous control.

[0098] In this embodiment, the independent communication component 3 includes a communication box body; both the receiving module 31 and the sending module 34 are detachably arranged on the communication box body.

[0099] In summary, the interface device for non-stop operation in the transformer substation area applicable to multiple working conditions provided by the present utility model separately sets the grid connection, synchronization operation, and communication with the power generation vehicle into three parts. The same standard interface is adopted for the grid connection switch in the grid connection box and the synchronization switch in the synchronization operation box, so as to facilitate the adoption of different wiring structures among the grid connection box, the synchronization operation box, and the power generation vehicle when the power generation vehicle has synchronization, the power generation vehicle does not have synchronization, and multiple power generation vehicles operate in parallel, improving the wiring flexibility and convenience of the maintenance operation. An adapted independent communication component is selected to communicate with the power generation vehicle to overcome the communication protocol compatibility problem, which is applicable to non-stop operation in the transformer substation area under multiple working conditions and improves the maintenance operation efficiency. In the communication part, the receiving module can stably obtain the control instructions and parameter requirements sent by the synchronization operation box in real time, laying a reliable data foundation for the entire communication process. The PID adjustment module, as the core processing unit, can dynamically adjust the operating parameters of the power generation vehicle according to the received data by using the proportional-integral-derivative control algorithm. When parameters such as the voltage and frequency output by the power generation vehicle fluctuate, the PID adjustment module can quickly calculate the optimal adjustment amount to achieve fine control of the power generation vehicle and ensure that its output parameters always match the grid requirements.

[0100] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A live working interface device for a distribution transformer area applicable to multiple working conditions, characterized in that, It includes a grid connection box, a synchronization operation box, and an independent communication component for communicating and connecting with a substation power generation vehicle; Two grid connection switches are provided on the grid connection box, and one end of all the grid connection switches is used to connect to the power grid; A first synchronization switch and a second synchronization switch are provided on the synchronization operation box, and the independent communication component is communicatively connected to the synchronization operation box; The other end of one grid connection switch is electrically connected to one end of the first synchronization switch, and the other end of the other grid connection switch is used to be electrically connected to one end of the second synchronization switch or the other end of the first synchronization switch; The other end of the grid connection switch, both ends of the first synchronization switch, and both ends of the second synchronization switch are configured with the same standard interface; The independent communication component includes a receiving module, a PID adjustment module, an adjustment conversion module, and a sending module; The synchronization operation box is communicatively connected to the receiving module, the receiving module is communicatively connected to the PID adjustment module, and the PID adjustment module is communicatively connected to the sending module through the adjustment conversion module; The sending module is used to communicate and connect with the substation power generation vehicle; The independent communication component includes a communication box body; The receiving module and the sending module are both detachably arranged on the communication box body.

2. The interface device for non-stop power operation in a transformer substation area applicable to multiple working conditions according to claim 1, wherein A synchronization operation control module is provided inside the synchronization operation box; The synchronization operation control module is communicatively connected to the independent communication component, and the synchronization operation control module is electrically connected to the control end of each synchronization switch respectively.

3. The interface device for non-stop operation in a power distribution substation applicable to multiple working conditions according to claim 2, characterized in that, A power generation vehicle grid connection button, a power generation vehicle off-grid button, and an anti-synchronization grid connection button are also provided on the synchronization operation box; The synchronization operation control module is electrically connected to the power generation vehicle grid connection button, the power generation vehicle off-grid button, and the anti-synchronization grid connection button respectively.

4. The interface device for non-stop operation in the transformer substation area applicable to multiple working conditions according to claim 1, characterized in that, The independent communication component further includes a multi-machine cooperation module; The receiving module is communicatively connected to the multi-machine cooperation module, and the multi-machine cooperation module is communicatively connected to the PID adjustment module.

5. The interface device for non-stop power operation in a transformer substation area applicable to multiple working conditions according to claim 1, wherein, The independent communication component further includes a synchronization data measurement module; The receiving module is communicatively connected to the synchronization data measurement module, and the synchronization data measurement module is communicatively connected to the PID adjustment module.

6. The interface device for non-stop operation in the substation area applicable to multiple working conditions according to claim 1, characterized in that It further includes a short connection cable; The port of the short connection cable is adapted to the standard interface.

7. The interface device for non-stop operation in the substation area applicable to multiple working conditions according to claim 1, characterized in that, Both the first synchronization switch and the second synchronization switch are built-in switches.

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