Testing device for remote double-circuit alternating current switching of electric power communication power supply and control method of testing device

Abstract

The invention belongs to the field of electric power communication power supplies, and provides an electric power communication power supply remote double-circuit alternating current switching test device and a control method thereof. The device comprises a first alternating current control loop and a second alternating current control loop, one end of the first alternating current control loop and one end of the second alternating current control loop are correspondingly connected with the output end of an alternating current input air switch, and the other end is correspondingly connected with the alternating current input end of a double-alternating current automatic switching device; the control circuit is used for controlling the on-off of the first alternating current control loop and the second alternating current control loop so as to simulate the input abnormal condition of the on-site double-alternating current automatic switching device and verify the automatic switching performance of the double-alternating current automatic switching device; one end of the bypass control loop is connected with the output end of any AC input air switch, and the other end of the bypass control loop is connected with the double-AC automatic switching device; the bypass control loop is in an off state in a normal working state, and when the first alternating current control loop and the second alternating current control loop are both in the off state, the bypass control loop is switched to be in an on state.

Description

Technical Field

[0001] The invention belongs to the field of electric power communication power supply, and in particular relates to a test device for remote dual-path AC switching of an electric power communication power supply and a control method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] At present, the dual-circuit AC switching test is mainly completed by the test personnel operating the two-circuit AC control circuit breaker on site, which consumes a lot of manpower and material resources and also poses a safety hazard. In addition, the existing dual-circuit AC automatic switching device ATS (Automatic Transfer Switching) or STS (Static Transfer Switch) with remote control mainly realizes one or two-circuit power supply by controlling the switch action signal of ATS or STS, and cannot simulate the abnormal input of ATS or STS on site, nor can it realize the dual-circuit input failure, which does not meet the requirements of automatic switching test. Summary of the invention

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a test device for remote dual-channel AC switching of electric power communication power supply and a control method thereof, which realizes the dual AC switching test of electric power communication power supply by remotely controlling the dual AC input terminals of ATS or STS, and adds a completely independent controllable bypass. Once the dual AC switching fails, the path can be started remotely or locally to ensure the power supply of the communication power supply, thereby buying time for subsequent emergency repairs.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A first aspect of the present invention provides a test device for remote dual-circuit AC switching of an electric power communication power supply.

[0007] A test device for remote dual-circuit AC switching of an electric power communication power supply, comprising: a control circuit, a first AC control loop, a second AC control loop and a bypass control loop; the control circuit is connected to a remote control terminal; the control circuit is connected to the first AC control loop, the second AC control loop and the bypass control loop;

[0008] One end of the first AC control circuit and the second AC control circuit are respectively connected to the output end of the AC input circuit breaker, and the other end is connected to the AC input end of the dual AC automatic switching device; the control circuit is used to control the on-off of the first AC control circuit and the second AC control circuit to simulate the input abnormality of the dual AC automatic switching device on site to verify the automatic switching performance of the dual AC automatic switching device;

[0009] One end of the bypass control loop is connected to the output end of any AC input circuit breaker, and the other end of the bypass control loop is connected to a dual AC automatic switching device; the bypass control loop is in a disconnected state under normal working conditions, and when both the first AC control loop and the second AC control loop are in a disconnected state, the control circuit is used to control the bypass control loop to switch to a conductive state.

[0010] As an implementation manner, when the bypass control loop is in a connection state, the control circuit controls both the first AC control loop and the second AC control loop to be locked in a disconnection state.

[0011] The advantage of the above technical solution is that it can avoid the failure of automatic switching of ATS or STS due to mechanical failure or aging of electrical components during daily use, which leads to power failure of the subsequent power supply system. It provides an independent circuit as a temporary power supply for the communication power supply, prevents the battery pack under the communication power supply from discharging, and improves the power supply reliability during the emergency repair process.

[0012] As an implementation manner, when the control circuit controls the bypass control loop to switch from an on state to an off state, the control circuit controls the off state of the first AC control loop and the second AC control loop to be unlocked, and can control the state switching of the first AC control loop and the second AC control loop.

[0013] The advantage of the above technical solution is that it can utilize the complete independence of the bypass control loop to fundamentally eliminate the hidden danger of overvoltage and burning of the internal circuit due to phase sequence disorder of ATS or STS.

[0014] As an implementation mode, the dual AC automatic switching device includes a first AC controllable branch and a second AC controllable branch, the first AC controllable branch is connected to a first AC control loop, and the second AC controllable branch is connected to a second AC control loop;

[0015] The first AC controllable branch and the second AC controllable branch are respectively connected in series with a first signal acquisition circuit and a second signal acquisition circuit, which are used to correspondingly acquire electrical signals on the corresponding controllable branches and transmit them to the control circuit. The control circuit verifies the automatic switching performance of the dual AC automatic switching device based on the received signals.

[0016] The advantage of the above technical solution is that the control circuit can be used to verify the automatic switching performance of the dual AC automatic switching device according to the signals transmitted by each signal acquisition circuit.

[0017] As an implementation mode, the control circuit communicates with the remote terminal via a communication circuit.

[0018] As an implementation manner, a first contactor switch is connected in series to the first AC control circuit, and the first contactor switch is connected to the control circuit.

[0019] As an implementation manner, a second contactor switch is connected in series to the second AC control circuit, and the second contactor switch is connected to the control circuit.

[0020] As an implementation manner, a third contactor switch is connected in series to the bypass control circuit, and the third contactor switch is connected to the control circuit.

[0021] A second aspect of the present invention provides a control method for a test device based on the remote dual-circuit AC switching of the electric power communication power supply as described above.

[0022] A control method for a test device for remote dual-circuit AC switching of an electric power communication power supply as described above comprises:

[0023] The control bypass control loop is in disconnected state;

[0024] When the bypass control loop is in the disconnected state, the first AC control loop and the second AC control loop are alternately controlled to switch from the on-state to the disconnected state to simulate the abnormal input of the on-site dual AC automatic switching device to verify the automatic switching performance of the dual AC automatic switching device.

[0025] As an implementation mode, when the first AC control circuit and the second AC control circuit fail to switch, or the AC automatic switching device is in a fault state:

[0026] The first AC control loop and the second AC control loop are controlled to switch from the on state to the off state, and then the bypass control loop is controlled to switch from the off state to the on state.

[0027] The beneficial effects of the present invention are:

[0028] (1) The test device for remote dual-channel AC switching of electric power communication power supply of the present invention is used before the dual-channel AC automatic switching device (ATS or STS) of the electric power communication power supply and after the two-channel AC control circuit breaker, and is mainly used for remotely controlling the dual-channel AC input of the communication power supply to complete the dual-channel AC switching test; the test device for remote dual-channel AC switching of the electric power communication power supply includes an independent dual-channel AC control device and a remote control system, and only needs to remotely operate the on-site equipment to realize the on-off of the two-channel AC, simulate the abnormal input of the on-site ATS or STS, and thus verify whether the ATS or STS can switch automatically.

[0029] (2) In order to avoid the subsequent power system losing power due to the failure of automatic switching of the ATS or STS due to mechanical failure or aging of electrical components during daily use, the present invention also adds an independent controllable circuit, namely, a bypass control circuit. When the ATS or STS cannot switch, once the dual AC switching fails, this path can be remotely or locally started to ensure the power supply of the communication power supply, providing an independent circuit as a temporary power supply for the communication power supply, preventing the battery pack under the communication power supply from discharging, and improving the power supply reliability during the emergency repair process.

[0030] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 It is a schematic diagram of the structure of a test device for remote dual-path AC switching of an electric power communication power supply according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Figure 1 A schematic diagram of the structure of a test device for remote dual-circuit AC switching of an electric power communication power supply according to an embodiment of the present invention is given. Figure 1 As shown, a test device for remote dual-circuit AC switching of an electric power communication power supply of this embodiment includes: a control circuit, a first AC control loop, a second AC control loop and a bypass control loop; the control circuit is connected to a remote control end; the control circuit is connected to the first AC control loop, the second AC control loop and the bypass control loop;

[0037] One end of the first AC control circuit and the second AC control circuit are respectively connected to the output end of the AC input circuit breaker, and the other end is connected to the AC input end of the dual AC automatic switching device; the control circuit is used to control the on-off of the first AC control circuit and the second AC control circuit to simulate the input abnormality of the dual AC automatic switching device on site to verify the automatic switching performance of the dual AC automatic switching device;

[0038] One end of the bypass control loop is connected to the output end of any AC input circuit breaker, and the other end of the bypass control loop is connected to a dual AC automatic switching device; the bypass control loop is in a disconnected state under normal working conditions, and when both the first AC control loop and the second AC control loop are in a disconnected state, the control circuit is used to control the bypass control loop to switch to a conductive state.

[0039] In this embodiment, the control circuit can be implemented by using an existing control chip, and its specific model can be selected according to actual control accuracy requirements.

[0040] In order to realize remote control, the control circuit communicates with the remote terminal through a communication circuit, wherein the communication circuit can be realized by any existing wireless communication method.

[0041] In a specific implementation process, a first contactor switch is connected in series to the first AC control circuit, and the first contactor switch is connected to the control circuit.

[0042] A second contactor switch is connected in series to the second AC control circuit, and the second contactor switch is connected to the control circuit.

[0043] A third contactor switch is connected in series to the bypass control circuit, and the third contactor switch is connected to the control circuit.

[0044] The structures of the first contactor switch, the second contactor switch and the third contactor switch are all existing structures and will not be described in detail here.

[0045] In one or more embodiments, when the bypass control loop is in the on state, the control circuit controls the first AC control loop and the second AC control loop to be locked in the off state. This can prevent the ATS or STS from automatically switching due to mechanical failure or aging of electrical components during daily use, resulting in power failure of the subsequent power supply system, and provide an independent circuit as a temporary power supply for the communication power supply, prevent the battery pack under the communication power supply from discharging, and improve the power supply reliability during the emergency repair process.

[0046] When the control circuit controls the bypass control loop to switch from the on state to the off state, the control circuit controls the off states of the first AC control loop and the second AC control loop to be unlocked, and can control the state switching of the first AC control loop and the second AC control loop.

[0047] Although the related designs have an ATS or STS added with a "bypass" circuit, the "bypass" set on the ATS or STS cannot completely cut off the connection with the "main line" or "backup line", and the circuit cannot be independent. The ATS or STS phase sequence disorder may cause the internal circuit to overvoltage and burn out. The present embodiment can utilize the complete independence of the bypass control circuit to fundamentally eliminate the hidden danger of the ATS or STS phase sequence disorder causing the internal circuit to overvoltage and burn out.

[0048] In this embodiment, the dual AC automatic switching device includes a first AC controllable branch and a second AC controllable branch, the first AC controllable branch is connected to a first AC control loop, and the second AC controllable branch is connected to a second AC control loop;

[0049] The first AC controllable branch and the second AC controllable branch are respectively connected in series with a first signal acquisition circuit and a second signal acquisition circuit, which are used to correspondingly acquire electrical signals on the corresponding controllable branches and transmit them to the control circuit, and the control circuit verifies the automatic switching performance of the dual AC automatic switching device according to the received signals. In this way, the control circuit can verify the automatic switching performance of the dual AC automatic switching device according to the signals transmitted by each signal acquisition circuit.

[0050] The control method of the test device for remote dual-circuit AC switching of electric power communication power supply as described above includes:

[0051] Step 1: Control the bypass control loop to be in the disconnected state;

[0052] Step 2: When the bypass control loop is in the disconnected state, alternately control the first AC control loop and the second AC control loop to switch from the on state to the disconnected state to simulate the input abnormality of the on-site dual AC automatic switching device to verify the automatic switching performance of the dual AC automatic switching device.

[0053] In one or more embodiments, when the first AC control loop and the second AC control loop fail to switch, or the AC automatic switching device is in a fault state:

[0054] The first AC control loop and the second AC control loop are controlled to switch from the on state to the off state, and then the bypass control loop is controlled to switch from the off state to the on state.

[0055] The test device for remote dual-channel AC switching of the power communication power supply of this embodiment includes an independent dual-channel AC control device and a remote control system. It only needs to remotely operate the on-site equipment to realize the switching of the two-channel AC, simulate the abnormal input of the on-site ATS or STS, and verify whether the ATS or STS can switch automatically;

[0056] In order to avoid the subsequent power supply system losing power due to the failure of automatic switching of ATS or STS due to mechanical failure or aging of electrical components during daily use, this embodiment uses an independent controllable circuit, namely a bypass control circuit. When ATS or STS cannot switch, once the dual AC switching fails, this path can be started remotely or locally to ensure the power supply of the communication power supply, providing an independent circuit as a temporary power supply for the communication power supply, preventing the battery pack under the communication power supply from discharging, and improving the power supply reliability during the emergency repair process.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A test device for remote dual-circuit AC switching of electric power communication power supply, characterized in that: include: A control circuit, a first AC control loop, a second AC control loop and a bypass control loop; the control circuit is connected to a remote control terminal; the control circuit is connected to the first AC control loop, the second AC control loop and the bypass control loop; One end of the first AC control circuit and the second AC control circuit are respectively connected to the output end of the AC input circuit breaker, and the other end is connected to the AC input end of the dual AC automatic switching device; the control circuit is used to control the on-off of the first AC control circuit and the second AC control circuit to simulate the input abnormality of the dual AC automatic switching device on site to verify the automatic switching performance of the dual AC automatic switching device; One end of the bypass control loop is connected to the output end of any AC input circuit breaker, and the other end of the bypass control loop is connected to a dual AC automatic switching device; the bypass control loop is in a disconnected state under normal working conditions, and when both the first AC control loop and the second AC control loop are in a disconnected state, the control circuit is used to control the bypass control loop to switch to a conductive state.

2. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 1, characterized in that: When the bypass control loop is in the on state, the control circuit controls the first AC control loop and the second AC control loop to be locked in the off state.

3. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 2, characterized in that: When the control circuit controls the bypass control loop to switch from the on state to the off state, the control circuit controls the off states of the first AC control loop and the second AC control loop to be unlocked, and can control the state switching of the first AC control loop and the second AC control loop.

4. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 1, characterized in that: The dual AC automatic switching device comprises a first AC controllable branch and a second AC controllable branch, wherein the first AC controllable branch is connected to a first AC control loop, and the second AC controllable branch is connected to a second AC control loop; The first AC controllable branch and the second AC controllable branch are respectively connected in series with a first signal acquisition circuit and a second signal acquisition circuit, which are used to correspondingly acquire electrical signals on the corresponding controllable branches and transmit them to the control circuit. The control circuit verifies the automatic switching performance of the dual AC automatic switching device based on the received signals.

5. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 1, characterized in that: The control circuit communicates with the remote terminal via the communication circuit.

6. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 1, characterized in that: A first contactor switch is connected in series to the first AC control circuit, and the first contactor switch is connected to the control circuit.

7. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 1, characterized in that: A second contactor switch is connected in series to the second AC control circuit, and the second contactor switch is connected to the control circuit.

8. The test device for remote dual-circuit AC switching of electric power communication power supply according to claim 1, characterized in that: A third contactor switch is connected in series to the bypass control circuit, and the third contactor switch is connected to the control circuit.

9. A control method for a test device for remote dual-circuit AC switching of an electric power communication power supply according to any one of claims 1 to 8, characterized in that: include: The control bypass control loop is in disconnected state; When the bypass control loop is in the disconnected state, the first AC control loop and the second AC control loop are alternately controlled to switch from the on-state to the disconnected state to simulate the abnormal input of the on-site dual AC automatic switching device to verify the automatic switching performance of the dual AC automatic switching device.

10. The control method according to claim 9, characterized in that: When the first AC control circuit and the second AC control circuit fail to switch, or the AC automatic switching device is in a fault state: The first AC control loop and the second AC control loop are controlled to switch from the on state to the off state, and then the bypass control loop is controlled to switch from the off state to the on state.

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