Method for switching operation of low-voltage electrical system

Abstract

The invention relates to a switching operation method of a low-voltage electrical system, which comprises the following steps: when a low-voltage switchboard is in a segmented operation state, stopping operation equipment of a segment II or switching to a segment I for power supply; cutting off circuit breakers of all operation equipment connected with the section II; pressing an opening button of a circuit breaker of the section II incoming cabinet; a knife switch at the upper end of a circuit breaker of the section II incoming cabinet is switched to a'open 'position by using an operating handle; knife switches at the upper end and the lower end of a circuit breaker of the bus coupler cabinet are switched to a closed position by using an operating handle; an energy storage button of the bus coupler cabinet is pressed down to store energy before closing; after the energy storage is finished, a'closing 'button of a circuit breaker of the bus coupler cabinet is pressed down; checking and confirming that the section II disc box is powered, and completing equipment power supply. The invention relates to a switching operation method for a low-voltage electrical system, and compared with the prior art, the switching operation method for the low-voltage electrical system has the advantages that the dependence on the previous working experience of operators is reduced, and accidents in the equipment switching process can be effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power safety, and in particular to a method for switching operation of a low-voltage electrical system. Background Art

[0002] In low-voltage electrical systems, switching operations (i.e., power switching operations) are an important maintenance and management task, which usually involves transferring current from one distribution circuit to another. This operation is essential to ensure the continued operation of equipment, perform routine maintenance, and troubleshoot. Traditional switching operations mainly rely on the operator's work experience, and there may be irregular behaviors when performing switching operations, increasing safety hazards. Summary of the invention

[0003] In order to solve the above problems, the object of the present invention is to provide a method for switching operation of a low-voltage electrical system.

[0004] A method for switching operation of a low voltage electrical system, comprising:

[0005] Step 1: Confirm whether the low-voltage distribution board is in segmented operation;

[0006] Step 2: When the low-voltage switchboard is in segmented operation, shut down the equipment in segment II or switch to segment I for power supply;

[0007] Step 3: Cut off the circuit breakers of all running equipment connected to Section II;

[0008] Step 4: Press the "open" button of the circuit breaker of the section II incoming cabinet;

[0009] Step 5: Use the operating handle to turn the knife switch on the upper end of the circuit breaker of the section II incoming cabinet to the "off" position;

[0010] Step 6: Use the operating handle to turn the upper and lower knife switches of the circuit breaker of the mother coupling cabinet to the "closed" position;

[0011] Step 7: Press the "energy storage" button on the busbar cabinet to store energy before closing;

[0012] Step 8: After the energy storage is completed, press the "close" button of the circuit breaker of the mother coupling cabinet;

[0013] Step 9: Check and confirm that the section II panel box has been powered;

[0014] Step 10: Close the circuit breaker of the equipment in Section II that needs to be operated to complete the power supply to the equipment.

[0015] Preferably, after step 5, the method further includes: hanging a "No Closing" operation sign on the section II power receiving cabinet.

[0016] Preferably, after step 8, the method further includes: hanging a "No Switching" operation sign on the main coupling cabinet.

[0017] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0018] The invention relates to a method for switching operation of a low-voltage electrical system. Compared with the prior art, the invention reduces the dependence on the previous working experience of operators and can effectively prevent accidents during the equipment switching process.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A flow chart of a method for switching operation of a low-voltage electrical system provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1 , a method for switching operation of a low voltage electrical system, comprising:

[0026] Step 1: Confirm whether the low-voltage distribution board is in segmented operation;

[0027] Step 2: When the low-voltage switchboard is in segmented operation, shut down the equipment in segment II or switch to segment I for power supply;

[0028] Step 3: Cut off the circuit breakers of all running equipment connected to Section II;

[0029] Step 4: Press the "open" button of the circuit breaker of the section II incoming cabinet;

[0030] Step 5: Use the operating handle to turn the knife switch on the upper end of the circuit breaker of the section II incoming cabinet to the "off" position;

[0031] Step 6: Use the operating handle to turn the upper and lower knife switches of the circuit breaker of the mother coupling cabinet to the "closed" position;

[0032] Step 7: Press the "energy storage" button on the busbar cabinet to store energy before closing;

[0033] Step 8: After the energy storage is completed, press the "close" button of the circuit breaker of the mother coupling cabinet;

[0034] Step 9: Check and confirm that the section II panel box has been powered;

[0035] Step 10: Close the circuit breaker of the equipment in Section II that needs to be operated to complete the power supply to the equipment.

[0036] The switching operation of the present invention is further described below in conjunction with specific embodiments:

[0037] 1. Prepare and check the tools (switch operating handle, sign);

[0038] 2. Confirm that the low-voltage switchboard is in segmented operation;

[0039] 3. Fill in the operation ticket;

[0040] 4. Shut down or transport the equipment in Section II to Section I;

[0041] 5. Cut off the circuit breakers (sub-switches) of all equipment in Section II;

[0042] 6. Press the "open" button of the circuit breaker (main switch) of the section II incoming cabinet;

[0043] 7. Use the operating handle to turn the knife switch on the upper end of the circuit breaker (main switch) of the section II incoming cabinet to the "off" position;

[0044] 8. Hang a "No Closing" operation sign on the power receiving cabinet of Section II;

[0045] 9. Use the operating handle to turn the upper and lower knife switches of the circuit breaker of the mother coupling cabinet to the "closed" position;

[0046] 10. Press the "energy storage" button on the main coupling cabinet to store energy before closing;

[0047] 11. After the energy storage is completed, press the "close" button of the circuit breaker of the mother coupling cabinet;

[0048] 12. Hang a "No Switching" operation sign on the main coupling cabinet;

[0049] 13. Check and confirm that the section II panel box has been powered;

[0050] 14. Close the circuit breaker (sub-switch) of the equipment in Section II that needs to be operated;

[0051] 15. Resume operation of equipment in Section II.

[0052] The method can ensure the stable operation of the low-voltage power system before and after the operation, and prevent personal injury and equipment damage caused by misoperation.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for switching operation of a low voltage electrical system, characterized in that: include: Step 1: Confirm whether the low-voltage distribution board is in segmented operation; Step 2: When the low-voltage switchboard is in segmented operation, shut down the equipment in segment II or switch to segment I for power supply; Step 3: Cut off the circuit breakers of all running equipment connected to Section II; Step 4: Press the "open" button of the circuit breaker of the section II incoming cabinet; Step 5: Use the operating handle to turn the knife switch on the upper end of the circuit breaker of the section II incoming cabinet to the "off" position; Step 6: Use the operating handle to switch the upper and lower knife switches of the circuit breaker of the mother coupling cabinet to the "closed" position; Step 7: Press the "energy storage" button on the main coupling cabinet to store energy before closing; Step 8: After the energy storage is completed, press the "Close" button of the circuit breaker of the mother coupling cabinet; Step 9: Check and confirm that the section II panel box has been powered; Step 10: Close the circuit breaker of the equipment in Section II that needs to be operated to complete the power supply to the equipment.

2. A method for switching operation of a low-voltage electrical system according to claim 1, characterized in that: After step 5, the method further includes: hanging a "no closing" operation sign on the section II power receiving cabinet.

3. A method for switching operation of a low-voltage electrical system according to claim 1, characterized in that: After step 8, the method further includes: hanging a "No Switching" operation sign on the main coupling cabinet.

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