CN212693893U

CN212693893U - Multifunctional interface simulation circuit breaker for power distribution network

Info

Publication number: CN212693893U
Application number: CN201921695779.8U
Authority: CN
Inventors: 强荣; 李明正; 马晓强; 刘峰; 王占云; 张平; 吕玉伟; 韩大侠; 慎怡然; 马剑
Original assignee: State Grid Ningxia Electric Power Co Wuzhong Power Supply Co
Current assignee: State Grid Ningxia Electric Power Co Wuzhong Power Supply Co
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2021-03-12
Anticipated expiration: 2029-10-11

Abstract

The utility model belongs to the technical field of distribution automation, concretely relates to many functional interface of distribution network simulation circuit breaker. The aerial plug comprises a power supply module, an aerial plug module, a signal loop module and a box body; the power supply module adopts AC/DC switching for power supply voltage, the aerial plug module adopts multi-model same module integration, the installation position is designed to be a box panel, the fixing mode adopts screw fixation, the wiring mode adopts a terminal row wiring mode, and the signal loop module comprises a closing loop, an opening loop, a self-locking loop, an opening monitoring loop and a closing monitoring loop. The safety of operators is guaranteed, the working efficiency is improved, the related operation flow of the FTU is optimized, and the equipment overhaul and defect elimination time is shortened.

Description

Multifunctional interface simulation circuit breaker for power distribution network

Technical Field

The utility model belongs to the technical field of distribution automation, concretely relates to many functional interface of distribution network simulation circuit breaker.

Background

Modern science and technology and social economy develop rapidly, and city construction speed is constantly accelerated, and electric power facility scale constantly enlarges and gradually gets into standardization, the standardized management mode, and along with the promotion of distribution network automation coverage, FTU's debugging and the work of disappearing increase gradually, has brought serious burden to distribution network automation's daily fortune dimension. Along with the improvement of the automatic coverage rate of the power distribution network, the debugging and defect eliminating workload of the FTU of the power distribution terminal equipment is increased, and the contradiction that the automatic operation and maintenance workload of the power distribution network is relatively heavy and the automatic operation and maintenance personnel of the power distribution network are relatively few is increasingly prominent.

Aiming at the daily work of the FTU, the FTU comprises three types of field debugging, pole debugging and pole eliminating defects. Performing field debugging, namely performing field/local debugging on the newly configured FTU; debugging on the pole, namely debugging on the pole before equipment is put into operation, and needing to power off a line and open/close a circuit breaker for multiple times; and the defects of the equipment are required to be put aside when the equipment fails during operation, such as switch failure and the like, and the circuit breaker can be switched on and switched off after the power failure of the circuit, so that the faults are accurately determined and positioned. The average height of the FTU from the ground is 4 meters, and the average height of the circuit breaker from the ground is 12 meters, so that the working efficiency is influenced, and meanwhile, serious potential safety hazards exist.

The debugging of the pole-mounted circuit breaker is divided into 7 main steps of downloading configuration parameters, testing the circuit breaker on site, testing the circuit breaker remotely, verifying a protection device, verifying remote signaling, verifying remote monitoring, disassembling a component and storing the component. The above steps are investigated and tested separately, and there are the following problems to be improved:

(1) the 10kV pole-mounted circuit breaker is large in size, heavy in mass and difficult to move, and sometimes can be completed by matching with hoisting equipment, so that the method is one of time-consuming links in FTU debugging work;

(2) for circuit breakers manufactured by different manufacturers, the model numbers of aviation plugs of control cables are inconsistent, and selection and matching of the control cables are troublesome during field debugging;

(3) the aviation plug of the 10kV pole-mounted circuit breaker is arranged at the bottom, and when the circuit breaker is debugged on site, the circuit breaker needs to be supported by a hard object for about 30cm, and the aviation plug is inconvenient to install;

(4) in the FTU debugging step, the breaker needs to be opened and closed for about 5-20 times, frequent opening and closing can cause the shortening of the service life and the reduction of the performance of the breaker, and the energy storage time of a spring accounts for the main opening and closing time of the breaker;

(5) when the FTU is debugged on the rod and the defect is eliminated, an operator needs to wait for operation on the rod for a long time, and sometimes the operator needs to get on or off the rod for multiple times according to the requirements.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a many functional interface of distribution network simulation circuit breaker.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a multifunctional interface simulation circuit breaker for a power distribution network comprises a power supply module, an aerial plug module, a signal loop module and a box body; the power supply module adopts AC/DC switching for power supply voltage, the aerial plug module adopts multi-model same module integration, the installation position is designed to be a box panel, the fixing mode adopts screw fixation, the wiring mode adopts a terminal row wiring mode, and the signal loop module comprises a closing loop, an opening loop, a self-locking loop, an opening monitoring loop and a closing monitoring loop.

Furthermore, an integrated circuit is adopted in a logic circuit of the signal circuit module; the Siemens indicating lamp is convenient for observing signals.

Further, the power module comprises an external 220V alternating current/direct current module and an internal 24V storage battery.

Furthermore, the box body structure adopts a semi-closed stainless steel material box body, and the operation mode adopts a key switch part.

The utility model has the advantages that: the integrated circuit and multi-module connection mode is adopted for assembly, the aerial plug module is integrated in the same module in multiple models, multi-model and multi-manufacturer interface connection can be achieved, and a traditional pole circuit breaker can be replaced logically. Therefore, the safety of operators is ensured, the working efficiency is improved, the related operation flow of the FTU is optimized, and the equipment overhaul and defect elimination time is shortened.

Drawings

Fig. 1 is a schematic diagram of a logic circuit of an analog circuit breaker.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example one

The embodiment is a power distribution network multifunctional interface simulation circuit breaker, which mainly comprises a power supply module, an aerial plug module, a signal loop module and a box body; the power supply module adopts AC/DC switching for power supply voltage, the aerial plug module adopts multi-model same module integration, the installation position is designed to be a box panel, the fixing mode adopts screw fixation, the wiring mode adopts a terminal row wiring mode, and the signal loop module comprises a closing loop, an opening loop, a self-locking loop, an opening monitoring loop and a closing monitoring loop.

The logic circuit of the signal circuit module adopts an integrated circuit, as shown in fig. 1, 1ZJ and 2ZJ are time relays, adjustable 3ZJ is a time relay, and LD and HD are indicator lamps; the Siemens indicating lamp is convenient for observing signals.

The power module comprises an external 220V alternating current/direct current module and an internal 24V storage battery.

The box adopts stainless steel material, the box structure adopts semi-enclosed structure, and the operating mode adopts button switch part.

The beneficial effect of this embodiment does: the integrated circuit and multi-module connection mode is adopted for assembly, the aerial plug module is integrated in the same module in multiple models, multi-model and multi-manufacturer interface connection can be achieved, and a traditional pole circuit breaker can be replaced logically. The utility model discloses guaranteed operation personnel safety, improved its work efficiency, can optimize the relevant operation flow of FTU, shortened overhaul of the equipments and eliminated the scarce time.

Example two

The utility model discloses a many functional interface of distribution network simulation circuit breaker comprises power module, aviation plug module, signal circuit module, the box four bibliographic categories branch, makes the implementation according to plan scheme to each part, finally assembles the wiring and checks up the acceptance to drop into the scene and test the application.

The power module part needs to stably output 24V direct current voltage according to the scheme, can use an external alternating current power supply to charge the storage battery, has clear wiring and correct loop. A lithium battery is selected as a power supply, an alternating current 220V power supply is connected into an LCA220D24W300D model direct current power supply module ACL/ACN, and B +/B-is connected into the positive electrode and the negative electrode of a 24V storage battery to charge the storage battery, and the V +/V-outputs 24V direct current voltage. The purposes of diversified power supply forms, stable output voltage, excellent performance of the used storage battery and excellent size are achieved.

The manufacturing of the aerial plug module needs to reasonably arrange 4 models of aerial plugs, ensure firm connection between the aerial plugs and the panel and confirm clear and reliable wiring of the wire cores. The aviation plugs of different manufacturers are reasonably arranged on the panel by using stainless steel as a material, cut according to corresponding sizes, fixed by using screws and wired by using terminal blocks, so that the correct wiring of each aviation plug inner core is ensured.

And manufacturing the aviation plug-in module, which is implemented according to the plan and comprises the following four steps:

the method comprises the following steps that firstly, aviation plugs of different models are reasonably arranged on a panel, and the size of the aviation plugs used by breaker manufacturer equipment on different columns is measured according to corresponding specifications;

secondly, punching holes on the panel according to corresponding sizes, fixing each aviation plug in sequence in a screw fixing mode, and carding and binding the wiring inside the box body, so that the conditions of disorder and no secondary line number are avoided;

thirdly, searching related data and drawings, accurately distinguishing the definition and the position of each aviation plug wire core, compiling a terminal number according to the definition of each aviation plug wire core, and finding a connection point with a logic circuit;

and fourthly, carrying out wiring work on the secondary wire and each connecting wire inside the box body, ensuring the fastening and accuracy of the terminal, and avoiding the misconnection and virtual connection of the connecting wires. And insulating, wrapping and binding the undefined connecting wire so as to avoid short circuit of a loop and signal misoperation.

The signal loop module needs to realize the materialization of a logic loop, clear switching-off/switching-on signal indication and recognition of a logic signal by the FTU. Optimizing and integrating the logic circuit according to a designed secondary circuit diagram, wherein the logic circuit is shown in figure 1; the operability, sensitivity and visibility of the logic circuit is improved using corresponding electrical components.

Specifically, qualified materials and electrical elements are used for integrated manufacturing of the logic circuit; fabricating a module housing from the integrated circuit; designing a module panel, and reasonably arranging related wiring jacks; printing and pasting of panel characters are carried out, and special experimental connecting lines are customized. The established targets of simple loop design, capability of sending signals required by the FTU, clear signal nodes and reasonable element use are achieved.

The device is required to achieve the aims of small overall size, convenience in carrying and installation, capability of sending correct logic signals, capability of being recognized by the FTU and adaptability to multi-model interface installation and signal transmission in the overall assembly test. Installing each module on the box according to the demand, looking up relevant drawings to carry out wiring to connect the device on the FTU for logic verification.

The outer shape and the panel are made of stainless steel and are made into a semi-closed box type outerA shell; the panel is made of a painted aluminum plate, and is cut and welded according to corresponding sizes to ensure that the thickness of the panel is 48 multiplied by 46 multiplied by 20 (cm)³) The size requirement of (2). Punching at the corresponding module position according to the corresponding size; and fixedly mounting a terminal block at the bottom of the box body, welding a battery clamping groove, welding an integrated circuit device clamping groove, and assembling and connecting all the components.

The device adopts integrated form return circuit, the mode of multimode connection to assemble, and the aviation plug module adopts the same module integration of polytypic, can realize polytypic, the interface connection of multiple producer to can replace traditional post circuit breaker in logic. And therefore, the safety of operators is ensured, the working efficiency of the operators is improved, the related operation flow of the FTU is optimized, and the equipment maintenance and defect elimination time is shortened.

The above description is only the specific embodiment of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution of the present invention and the inventive concept thereof within the technical scope of the present invention.

Claims

1. A multifunctional interface simulation circuit breaker for a power distribution network is characterized by comprising a power supply module, an aerial plug module, a signal loop module and a box body; the power supply module adopts AC/DC switching for power supply voltage, the aerial plug module adopts multi-type same module integration, the installation position is designed to be a box panel, the fixing mode adopts screw fixation, the wiring mode adopts a terminal row wiring mode, and the signal loop module comprises a closing loop, an opening loop, a self-locking loop, an opening monitoring loop and a closing monitoring loop; and the logic circuit of the signal circuit module adopts an integrated circuit.

2. The power distribution network multifunctional interface analog circuit breaker of claim 1, wherein the power module comprises an external 220V ac/dc module and an internal 24V battery.

3. The multifunctional interface simulation circuit breaker for power distribution network of claim 1, wherein the box structure is a semi-enclosed stainless steel box, and the operation mode is a key switch component.