Pump storage power station protection device wiring verification device

Abstract

The utility model discloses a wiring check device of pumped storage power station protection device belongs to the electric power system protection device check technical field, include: shell, set up the upper cover on the shell, power module, fixed mounting is in the shell inside bottom plate, including lithium battery group and voltage converter, is used for providing multi -gear DC operating voltage, controller, set up in the shell inside, is used for generating check instruction and driving intermediate relay, operation panel, embedding setting in the installation clamping groove of shell upside, and operation panel is used for parameter setting and state display, plug -in terminal row, is connected with the terminal row on the shell through the connection wire bundle, and the other end of plug -in terminal row is used for with the input quantity terminal row of protection device is connected. The utility model discloses through PLC control different open -in and working condition output to different intermediate relay, and the different open -in of protection device is input, and fast plug -in, simple and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of power system protection device verification technology, and particularly relates to a wiring verification device for pumped storage power station protection devices. Background Technology

[0002] Currently, the protection system for pumped storage power generation and transformation units uses hard-wired connections for inputs such as switch position nodes. The system then uses logic combinations to determine the operating condition of the power generation and transformation unit before locking or unlocking the relevant protection measures. The protection device can display whether individual inputs are functioning correctly and the current operating condition.

[0003] However, due to the large number of inputs to the generator-transformer unit protection, it is quite cumbersome for professionals to disconnect and rewire the protection during major overhaul and verification, and there are risks such as accidental disconnection and electric shock.

[0004] Therefore, it is essential to develop a wiring verification device for the protection devices of pumped storage power stations. Utility Model Content

[0005] In view of the above or existing deficiencies, this utility model proposes a wiring verification device for the protection device of a pumped storage power station, which can realize quick plugging and unplugging and improve verification efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model provides a wiring verification device for the protection device of a pumped storage power station, comprising:

[0008] An outer casing, on which a top cover is provided;

[0009] The power module, which is fixedly installed on the bottom plate inside the housing, includes a lithium battery pack and a voltage converter to provide multiple levels of DC operating voltage;

[0010] The controller, located inside the housing, is used to generate verification commands and drive intermediate relays;

[0011] The operation panel is embedded in the mounting slot on the upper side of the housing, and the operation panel is used for parameter setting and status display;

[0012] The pluggable terminal block is connected to the terminal block on the housing via a connecting wire harness. The other end of the pluggable terminal block is used to connect to the input terminal block of the protection device.

[0013] As a further technical solution of this utility model, the top of the outer shell is rotatably connected to a top cover via a hinge, the top cover is provided with a first buckle on the side away from the hinge, and the outer shell is provided with a first connecting member that cooperates with the first buckle to lock in place at the corresponding position.

[0014] As a further technical solution of this utility model, the controller includes:

[0015] The signal generation unit is used to generate adjustable pulse signals;

[0016] The PLC controller drives the intermediate relay to operate based on the adjustable pulse signal and sends a verification signal to the protection device.

[0017] As a further technical solution of this utility model, the power supply module further includes:

[0018] The power interface is located on the operation panel and supports both Type-C and DC dual-mode input;

[0019] A power display bar, located on the control panel, is used to display the remaining power in real time;

[0020] As a further technical solution of this utility model, a terminal block is provided inside the outer shell, and a terminal block slot is provided on the operation panel. The terminal block has a double-layer insulation structure, including:

[0021] Upper terminal block is used to connect shielded wiring harnesses;

[0022] The lower test hole is for inserting multimeter probes to measure signal parameters.

[0023] As a further technical solution of this utility model, the plug-in terminal block is a detachable aviation plug, and its pin layout matches the opening amount terminal block of the protection device; the outer layer of the wire harness is covered with a wear-resistant braided mesh, and the two ends of the wire harness adopt a stress relief structure to prevent bending and breakage.

[0024] As a further technical solution of this utility model, the operation panel is provided with a touch screen, a waterproof power switch, a running indicator light and an abnormal alarm light.

[0025] As a further technical solution of this utility model, the inner side of the upper cover is provided with a storage compartment, and the storage compartment contains spare pins and a plug terminal block with wire harness.

[0026] As a further technical solution of this utility model, the side of the outer shell is provided with a foldable handle, the handle is connected to the outer shell through a rotating shaft, and the rotating shaft has a built-in torsion spring to achieve automatic springback storage.

[0027] As a further technical solution of this utility model, an annular sealing strip is provided at the joint between the outer shell and the top cover. The sealing strip is made of silicone rubber and has a protection level of IP54.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. The outer shell and the top cover of this utility model are fastened together to form a closed box structure. Different inputs and operating conditions are controlled by PLC to output to different intermediate relays. It is quick to plug and unplug, simple and efficient. After receiving the command from the PLC, the relay contacts close, connecting different input circuits and inputting different input quantities to the protection device. The protection device display interface can be used to check whether the input quantity is normal and the current operating condition.

[0030] 2. The power module inside the casing provides operating voltage for the controller and operation panel. The power module is powered by a lithium battery pack, making it convenient to use.

[0031] 3. The signal generation unit of this utility model is a pulse generator, which is used to generate signal pulses and provide control instructions to the PLC controller. By sending different switch action signals, it drives the corresponding switch opening amount of the pumped storage power station protection device to act, and verifies whether the switch opening amount action is consistent with the sent switch command to realize the verification of the pumped storage power station protection device.

[0032] 4. The plug-in terminal block of this utility model is a detachable aviation plug, and its pin layout matches the opening amount terminal block of the protection device; the outer layer of the shielded connection harness is covered with a wear-resistant braided mesh, and the two ends of the shielded connection harness adopt a stress relief structure to prevent bending and breakage.

[0033] 5. The touch screen is used to input regular input commands and various operating condition commands. It can set time and communication, and display the operating conditions to facilitate verification by calibration personnel.

[0034] 6. A storage compartment is provided on the inside of the top cover. The storage compartment contains spare pins and terminal blocks with wire harnesses. A cover is provided on the top of the storage compartment to fix the terminal blocks placed in the groove and prevent the terminal blocks from falling off after the top cover is closed.

[0035] 7. To facilitate carrying and transportation, the outer shell of this utility model is provided with a foldable handle on the side. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 Front view of the wiring verification device for the pumped storage power station protection device provided in this embodiment of the utility model;

[0038] Figure 2Bottom structure diagram of the wiring verification device for the pumped storage power station protection device provided in this embodiment of the utility model;

[0039] Figure 3 Side view of the wiring verification device for the pumped storage power station protection device provided in this embodiment of the utility model;

[0040] Figure 4 A control structure diagram of the wiring verification device for the pumped storage power station protection device provided in this embodiment of the utility model;

[0041] As shown in the figure:

[0042] 10-Outer shell, 20-Top cover, 30-Power module, 40-Controller, 50-Operation panel, 60-Plug-in terminal block; 101-Mounting slot, 102-First connector, 103-Terminal block, 104-Foldable handle; 201-First buckle, 202-Storage compartment; 301-Lithium battery pack, 302-Voltage converter, 303-Power interface, 304-Power display bar; 401-Signal generation unit, 402-PLC controller; 501-Terminal block slot, 502-Touch display screen, 503-Waterproof power switch, 504-Run indicator light, 505-Abnormal alarm light; 601-Connecting harness; 141-Rotating shaft. Detailed Implementation

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and "clockwise" are used interchangeably.

[0046] The orientation or positional relationship indicated by "needle", "counterclockwise", "axial", "radial", "circumferential", etc., is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. It should be noted that the implementation methods of the present invention can be applied to any applicable scenario.

[0050] See Figures 1 to 3 A wiring verification device for a pumped storage power station protection device provided in an embodiment of the present invention includes:

[0051] The outer casing 10 has a top cover 20 disposed thereon;

[0052] The power module 30 is fixedly installed on the inner bottom plate of the housing 10, and includes a lithium battery pack 301 and a voltage converter 302, which is used to provide multiple DC working voltages.

[0053] The controller 40, located inside the housing 10, is used to generate verification commands and drive intermediate relays.

[0054] The operation panel 50 is embedded in the mounting slot 101 on the upper side of the housing 10. The operation panel 50 is used for parameter setting and status display.

[0055] The pluggable terminal block 60 is connected to the terminal block on the housing 10 via the connecting wire harness 601. The other end of the pluggable terminal block 60 is used to connect to the input terminal block of the protection device.

[0056] In this embodiment of the utility model, the outer shell and the top cover are fastened together to form a closed box structure. The power module inside the outer shell provides working voltage for the controller and the operation panel. The power module is powered by a lithium battery pack and can be charged. During use, it does not need to be connected to an external power source, making it convenient to use. The voltage of the lithium battery pack is converted into a voltage that can be used for the display screen on the controller and the operation panel through a voltage converter.

[0057] In this embodiment of the present invention, the top of the outer shell 10 is rotatably connected to the upper cover 20 via a pivot. The upper cover 20 is provided with a first buckle 201 on the side away from the hinge. The outer shell 10 is provided with a first connecting member 102 at a corresponding position to cooperate with and lock the first buckle 201.

[0058] See Figure 4 In this embodiment of the present invention, the controller 40 includes:

[0059] The signal generation unit 401 is used to generate adjustable pulse signals;

[0060] The PLC controller 402 drives the intermediate relay to operate based on the adjustable pulse signal and sends a verification signal to the protection device.

[0061] The signal generation unit is a pulse generator used to generate signal pulses and provide control commands to the PLC controller. By sending different switch action signals, it drives the corresponding switch opening quantity of the pumped storage power station protection device to act. The verification of the pumped storage power station protection device is achieved by checking whether the switch opening quantity action is consistent with the sent switch action command.

[0062] The wiring verification device for the protection device of the pumped storage power station provided by this utility model supplies power to the controller and the operation panel through the power module. The operation panel sends verification commands to the controller to control the intermediate relay. Different input circuits are connected to the protection device by plugging and unplugging the terminal blocks. The device displays whether the input is normal and the current operating condition.

[0063] The power module 30 also includes: a power interface 303, located on the operation panel, supporting Type-C and DC dual-mode input; and a power display bar 304, located on the operation panel, for displaying the remaining power in real time.

[0064] See Figure 1 The housing 10 has a terminal block 103 inside, and the operation panel 50 has a terminal block slot 501. The terminal block 103 has a double-layer insulation structure, including: an upper layer terminal for connecting a shielded connection harness; and a lower layer test hole for inserting a multimeter probe to measure signal parameters.

[0065] The pluggable terminal block 60 of this utility model is a detachable aviation plug. Figure 1 The plug-in terminal block shown in the diagram has a pin layout that matches the input terminal block of the protection device. The outer layer of the shielded connection harness is covered with a wear-resistant braided mesh, and the two ends of the shielded connection harness adopt a stress-relief structure to prevent bending and breakage.

[0066] The control panel 50 is equipped with a touch screen display 502, a waterproof power switch 503, a running indicator light 504, and an abnormal alarm light 505. The touch screen display is used to input regular input commands and various operating condition commands. It can be used to set time and communication, and display the operating status for easy verification by calibration personnel.

[0067] In this embodiment of the invention, a storage compartment 202 is provided inside the upper cover 20. The storage compartment 202 contains spare pins and a terminal block 60 with a wire harness. The storage compartment has a recessed structure, the size of which is the same as the size of the terminal block, allowing the terminal block to be embedded within the recess. A cover is provided on the upper side of the storage compartment to secure the terminal block placed in the recess, preventing it from falling out after the upper cover is closed. The upper cover can be divided into multiple storage compartments as needed to store power cables, terminal block pins, etc. The cover is fixed by a rotating buckle. When it is necessary to remove or place cables or terminal blocks, the rotating buckle is rotated outwards to open the cover. The cover and the recess are connected by a pivot or a slot, depending on the ease of access.

[0068] For easy carrying and transportation, the outer casing 10 is provided with a foldable handle 104 on the side. The handle 104 is connected to the outer casing 10 via a rotating shaft 141, and the rotating shaft 141 has a built-in torsion spring to achieve automatic springback storage. When in use, simply pull up the handle.

[0069] In this embodiment of the utility model, an annular sealing strip is provided at the joint between the outer shell 10 and the upper cover 20. The sealing strip is made of silicone rubber and has a protection level of IP54.

[0070] The present invention verifies the pumped storage protection device by controlling the signal output of the following: GCB opening and closing, generator position of the phase-changing switch, pumping position of the phase-changing switch, opening and closing position of the phase-changing switch, opening and closing position of the driven knife, opening and closing position of the driven knife, generator phase adjustment mode, water pump phase adjustment mode, electric brake knife opening and closing position, and black start input quantity. The verification purpose is achieved by checking whether the input quantity and output are consistent.

[0071] Except for the wiring harness and quick-connect terminals, which are separate accessories, all other modules of this utility model are integrated into the carrying case. The PLC controller, power module, and intermediate relays are concentrated inside the carrying case, while the circuit breaker, terminal block, and display screen are located on the operation panel, which can be seen by opening the carrying case. The operation panel includes: running indicator lights and abnormal alarm lights. The display screen can display historical records, alarm records, input commands, settings, and program editing. Input commands include regular input commands and various operating condition commands. Alarm records include input abnormality alarms, operating condition abnormality alarms, relay abnormality alarms, and power supply abnormality alarms. Settings include time settings, communication settings, etc. The program editing interface can edit input quantities and operating condition logic. The quick-connect terminals and wiring harness are detachable devices.

[0072] The outer shell and top cover of this utility model are fastened together to form a closed box structure. Different inputs and operating conditions are controlled by PLC to output to different intermediate relays. It is quick to plug and unplug, simple and efficient. After the PLC receives the command, the relay contacts close, connecting different input circuits and inputting different input quantities to the protection device. The protection device display interface can be used to check whether the input quantity is normal and the current operating condition.

[0073] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present invention to the forms disclosed herein. Although several exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A wiring verification device for the protection device of a pumped storage power station, characterized in that, include: An outer casing, on which a top cover is provided; The power module, which is fixedly installed on the bottom plate inside the housing, includes a lithium battery pack and a voltage converter to provide multiple levels of DC operating voltage; The controller, located inside the housing, is used to generate verification commands and drive intermediate relays; The operation panel is embedded in the mounting slot on the upper side of the housing, and the operation panel is used for parameter setting and status display; The pluggable terminal block is connected to the terminal block on the housing via a connecting wire harness. The other end of the pluggable terminal block is used to connect to the input terminal block of the protection device.

2. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The top of the outer shell is rotatably connected to a top cover via a hinge. The top cover has a first buckle on the side away from the hinge, and the outer shell has a first connecting piece at a corresponding position that engages with the first buckle to lock in place.

3. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The controller includes: The signal generation unit is used to generate adjustable pulse signals; The PLC controller drives the intermediate relay to operate based on the adjustable pulse signal and sends a verification signal to the protection device.

4. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The power module also includes: The power interface is located on the operation panel and supports both Type-C and DC dual-mode input; The power display bar, located on the control panel, is used to display the remaining power in real time.

5. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The housing is equipped with a terminal block, and the operation panel is provided with a terminal block slot. The terminal block has a double-layer insulation structure, including: Upper terminal block is used to connect shielded wiring harnesses; The lower test hole is for inserting multimeter probes to measure signal parameters.

6. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The plug-in terminal block is a detachable aviation plug, and its pin layout matches the opening amount terminal block of the protection device; the outer layer of the wire harness is covered with a wear-resistant braided mesh, and the two ends of the wire harness adopt a stress-relieving structure to prevent bending and breakage.

7. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The control panel is equipped with a touch screen, a waterproof power switch, a running indicator light, and an alarm light.

8. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The inner side of the top cover is provided with a storage compartment, which contains spare pins and plug terminal blocks with wire harnesses.

9. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The outer casing is provided with a foldable handle on the side. The handle is connected to the outer casing via a rotating shaft, and the rotating shaft has a built-in torsion spring to achieve automatic springback storage.

10. The wiring verification device for the protection device of a pumped storage power station according to claim 1, characterized in that, The junction between the outer shell and the top cover is provided with an annular sealing strip. The sealing strip is made of silicone rubber and has an IP54 protection rating.

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