Power supply and distribution system fault off-line simulation device

Abstract

The utility model relates to the technical field of power supply and distribution safety in chemical production, in particular to a power supply and distribution system fault off-line simulation device, which comprises a monitoring background, a communication transmission unit, a power simulation device and a transmission simulation device, the monitoring background is connected with the communication transmission unit, and the communication transmission unit is respectively connected with the power simulation device and the transmission simulation device. According to the utility model, various faults possibly occurring in the operation of the power supply and distribution system are simulated offline based on the high-voltage power distribution device and the transmission simulation device, and the monitoring background stores response data generated by the high-voltage power distribution device or / and the transmission simulation device when various faults occur, so that data support is provided for workers to analyze the faults later; therefore, during actual chemical production, a worker can judge the real-time data of the power supply and distribution system by using the analysis result of the off-line fault simulation, determine whether the power supply and distribution system has a fault, find out the corresponding fault type, and quickly respond and eliminate the fault.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power supply and distribution safety in chemical production, and is a power supply and distribution system fault offline simulation device. BACKGROUND

[0002] The continuity of equipment operation is highly required in dangerous chemical enterprises, and the normality of the power supply and distribution system is directly related to the stable operation of the production system. Once the power supply and distribution system is abnormal, the electrical equipment will be abnormally stopped, which will cause significant economic losses and accident risks. Therefore, it is particularly important to analyze and judge various problems in the power supply and distribution system in advance.

[0003] However, the production system of a dangerous chemical enterprise is a continuous production system, which cannot be easily stopped and has a long downtime. Therefore, it is impossible to realize online comprehensive inspection and analysis of the power supply and distribution system, and thus the analysis and judgment results and solutions of some small problems in the power supply and distribution system cannot be obtained. As a result, small problems in the power supply and distribution system cannot be discovered and solved in time during normal production, and the impact of the problems will continue to expand when the small problems in the power supply and distribution system are not solved for a long time, which will have a significant impact on the production system. Therefore, a power supply and distribution system fault offline simulation device is needed to simulate the faults of the power supply and distribution system in an offline state, so as to provide data support for analyzing and judging the causes and solutions of the faults. SUMMARY

[0004] The utility model provides a kind of power supply and distribution system fault offline simulation device, overcome the above prior art, it can effectively solve the problem that the prior art cannot simulate the fault of power supply and distribution system offline, cause the problem of timely discovery when power supply and distribution system fails, produce security risk.

[0005] The technical scheme of the utility model is realized by the following measures: a kind of power supply and distribution system fault offline simulation device, characterized by, including monitoring background, communication transmission unit, power simulation device and transmission simulation device, monitoring background is connected with communication transmission unit, communication transmission unit is connected with power simulation device and transmission simulation device respectively.

[0006] The following is a further optimization or / and improvement of the above technical scheme of the utility model:

[0007] The above communication transmission unit includes a switch, a first communication management machine and a second communication management machine, the monitoring background is connected with the switch, the switch is connected with the first communication management machine, the second communication management machine and the power simulation device respectively, the first communication management machine is connected with the power simulation device, and the second communication management machine is connected with the transmission simulation device.

[0008] The power simulation device comprises a direct current power supply device and two high-voltage motor cabinets, the direct current power supply device is connected with the two high-voltage motor cabinets, and the two high-voltage motor cabinets are connected with the switch and the first communication management machine.

[0009] The high-voltage motor cabinet is further provided with a pyrolysis particle detector and a temperature measuring device, and output ends of the pyrolysis particle detector and the temperature measuring device are connected at a signal output interface of the high-voltage motor cabinet.

[0010] The transmission simulation device comprises a low-voltage power distribution cabinet, a low-voltage motor and an operation box, the low-voltage motor and the operation box are connected with the low-voltage power distribution cabinet, and the low-voltage power distribution cabinet is connected with the second communication management machine.

[0011] The low-voltage power distribution cabinet is further provided with a pyrolysis particle detector and a temperature measuring device, and output ends of the pyrolysis particle detector and the temperature measuring device are connected at a signal output interface of the low-voltage power distribution cabinet.

[0012] The monitoring background comprises a device monitoring computer and a high-voltage five-prevention computer, and the device monitoring computer and the high-voltage five-prevention computer are connected with the switch.

[0013] The utility model discloses based on high -voltage power distribution device and transmission simulation device offline simulation power supply and distribution system operation possible occurrence of each kind of fault, and by monitoring background storage each kind of fault occurs high -voltage power distribution device or / and transmission simulation device produces response data, for the staff later -stage to the fault analysis provides data support, makes in actual chemical industry production, the staff can utilize offline fault simulation analysis result to power supply and distribution system real -time data judge, determines power supply and distribution system whether the fault occurs, and finds corresponding fault type, quick response removes the fault, avoids appearing power supply and distribution system appears small problem long time can not be solved, and the problem of the major influence of production system. BRIEF DESCRIPTION OF DRAWINGS

[0014] ATTACHED Figure 1 It is the circuit structure schematic drawing of the utility model embodiment. DETAILED DESCRIPTION

[0015] The utility model is not limited by the following embodiments, and the specific implementation can be determined according to the technical scheme and actual situation of the utility model.

[0016] The utility model will be further described in connection with the embodiments and drawings as follows:

[0017] Embodiment 1, as shown in the attached Figure 1 The utility model discloses a power supply and distribution system fault offline simulation device, including monitoring background, communication transmission unit, power simulation device and transmission simulation device, monitoring background is connected with communication transmission unit, and communication transmission unit is connected with power simulation device and transmission simulation device respectively.

[0018] In this embodiment, the power simulation device is used to simulate the power part in the power supply and distribution system (the power part provides stable power supply for chemical production), simulate various faults that often occur in power supply, and complete fault simulation by setting on the power simulation device.

[0019] In this embodiment, the transmission simulation device is used to simulate the power distribution part in the power supply and distribution system (the power distribution part distributes power to each load in chemical production), simulate various faults that often occur in power distribution, and complete fault simulation by setting on the transmission simulation device.

[0020] In this embodiment, the communication transmission unit builds a communication link between the monitoring background and the high-voltage power distribution device, and between the monitoring background and the transmission simulation device, and transmits the response data generated by the power simulation device and the transmission simulation device after simulating faults to the monitoring background.

[0021] In this embodiment, the monitoring background stores and displays the response data generated by the power simulation device and the transmission simulation device after simulating faults.

[0022] Specifically, the fault offline simulation process of this embodiment is as follows: determine all fault types to be simulated offline, set corresponding parameters in the high-voltage power distribution device or / and the transmission simulation device according to the fault types (the fault types include but are not limited to control loop faults, heat dissipation faults, circuit breaker tripping, indicator light not lighting, internal short circuit of switch cabinet, overheating of bus connection, etc.), the communication transmission unit receives the response data (including but not limited to voltage, current, temperature of key components and copper bars, DC screen electrical quantity, switch state, etc.) generated by the power simulation device and the transmission simulation device after simulating faults, and transmits the received response data to the monitoring background, and the monitoring background can store and display the received response data.

[0023] In summary, this embodiment simulates various faults that may occur in the operation of the power supply and distribution system based on the high-voltage power distribution device and the transmission simulation device, and stores the response data generated by the high-voltage power distribution device or / and the transmission simulation device when various faults occur in the monitoring background, which provides data support for staff to analyze faults later. Further, in actual chemical production, staff can use the analysis results of offline fault simulation to judge the real-time data of the power supply and distribution system, determine whether the power supply and distribution system has faults, find the corresponding fault type, quickly respond to eliminate faults, and avoid the problem that small problems in the power supply and distribution system cannot be solved for a long time, which causes significant impact on the production system.

[0024] Embodiment 2, as shown in FIG. 2, is a schematic diagram of the power supply and distribution system offline fault simulation system according to the embodiment of the present application. Figure 1As shown, this embodiment is a further optimization of the above embodiment. The communication transmission unit includes a switch, a first communication management unit and a second communication management unit. The monitoring backend is connected to the switch. The switch is connected to the first communication management unit, the second communication management unit and the power simulation device respectively. The first communication management unit is connected to the power simulation device and the second communication management unit is connected to the transmission simulation device.

[0025] In this embodiment, the monitoring backend is connected to the switch via a network cable, which is then connected to the first communication management unit, the second communication management unit, and the power simulation device. The first communication management unit is connected to the power simulation device via an RS485 cable, and the second communication management unit is connected to the transmission simulation device via an RS485 cable. The RS485 cable is used to receive and transmit response data generated by the power simulation device and the transmission simulation device after a simulated fault. The network cable is used to send control signals to the first communication management unit, the second communication management unit, and the power simulation device, as well as to transmit the response data generated by the power simulation device and the transmission simulation device after a simulated fault.

[0026] It should also be noted that the purpose of setting up a communication management unit in this embodiment is to convert the response data of different types of power simulation devices and transmission simulation devices, and then transmit them to the monitoring backend via a switch.

[0027] Example 3, as shown in the appendix Figure 1 As shown, this embodiment is a further optimization of the above embodiment. The power simulation device includes a DC power supply device and two high-voltage motor cabinets. The DC power supply device is connected to the two high-voltage motor cabinets, and both high-voltage motor cabinets are connected to the switch and the first communication management unit.

[0028] In this embodiment, a DC power supply device is connected to two high-voltage motor cabinets to equivalently simulate the power supply and distribution system (the power supply provides a stable power supply for chemical production). The high-voltage motor cabinets are existing, well-known equipment, including a main busbar compartment, circuit breaker compartment, cable compartment, relay instrument compartment, and heat dissipation system, etc. The DC power supply device provides DC power to the high-voltage motor cabinets. Both high-voltage motor cabinets can be 10kV high-voltage motor cabinets.

[0029] When simulating faults, various fault types can be simulated by adjusting and modifying the contact states, circuit states, and environmental states within the high-voltage motor cabinet. Fault types can include control circuit faults and heat dissipation faults. Control circuit faults include control switch faults, relay faults, contact faults, and protection device activation. These faults can be simulated by adjusting the settings of control switches, relay contacts, and protection devices under normal power supply. Heat dissipation faults can be simulated by stopping or adjusting the operating status of the heat dissipation system and improving the environmental conditions inside the cabinet.

[0030] Example 4 is a further optimization of the above examples. In this example, a pyrolysis particle detector and a wireless temperature measuring device are also provided in the high-voltage motor cabinet. The output terminals of the pyrolysis particle detector and the temperature measuring device are both connected to the signal output interface of the high-voltage motor cabinet.

[0031] In this embodiment, the pyrolysis particle detector and the wireless temperature measurement device are used to collect ignition data and temperature data inside the high-voltage motor cabinet.

[0032] Example 5, as shown in the appendix Figure 1 As shown, this embodiment is a further optimization of the above embodiment, wherein the transmission simulation device includes a low-voltage distribution cabinet, a low-voltage motor and an operation box, both of which are connected to the low-voltage distribution cabinet, and the low-voltage distribution cabinet is connected to the second communication management unit.

[0033] In this embodiment, the low-voltage motor and the control box are both connected to the low-voltage distribution cabinet to simulate the power distribution section of the power supply and distribution system (the power distribution section is the distribution of electrical energy to various loads in chemical production). The low-voltage distribution cabinet includes insulating components, a busbar system, and functional units. The insulating components include busbar clamps, functional boards, and insulators, mainly used to maintain electrical clearances, support the busbars, and withstand power during short circuits. The busbar system is responsible for carrying and distributing the rated current, and is usually divided into horizontal and vertical busbars. The horizontal busbars are usually placed at the rear of the cabinet for easy current distribution and connection. The functional units include circuit breakers, etc., used for power distribution, motor control, and reactive power compensation. The control box is used to send control commands to the low-voltage distribution cabinet, such as control commands for contact closing or opening.

[0034] During fault simulation, various fault types can be simulated by adjusting and modifying the contact status, line status, and environmental status within the low-voltage distribution cabinet. These fault types can include circuit breaker tripping, indicator light failure, internal short circuit in the switchgear, contact failure to operate, and overheating at busbar connections. The specific simulation process includes: actively setting conditions such as damaged wire insulation, loose terminals causing poor contact, live equipment casing, or damaged cable sheath contacting the ground, resulting in a short circuit or leakage, causing the circuit breaker to trip; actively changing the normal state of switches, relays, and other components in the control circuit, causing indicator lights to fail to illuminate; causing internal short circuits in the switchgear due to dirt or moisture on the busbar support insulation or the insulating base of the plug-in contacts; manually controlling the contacts to reverse their action by sending control commands to close or open them from the control box, simulating contact failure to operate; and overheating at the busbar connection by overtightening or loosening the connecting bolts.

[0035] Embodiment 6, this embodiment is a further optimization of the above-mentioned embodiments, wherein the low-voltage power distribution cabinet is further provided with a pyrolysis particle detector and a temperature measuring device, and output ends of the pyrolysis particle detector and the temperature measuring device are connected at a signal output interface of the low-voltage power distribution cabinet.

[0036] In this embodiment, the pyrolysis particle detector and the temperature measuring device are used to collect fire data and temperature data in the low-voltage power distribution cabinet.

[0037] Embodiment 7, as shown in the accompanying drawings, Figure 1 This embodiment is a further optimization of the above-mentioned embodiments, wherein the monitoring background includes a device monitoring computer and a high-voltage five-prevention computer, and the device monitoring computer and the high-voltage five-prevention computer are connected with the switch.

[0038] In this embodiment, the device monitoring computer is used to store and display response data generated by the power simulation device and the transmission simulation device after simulation of faults; the high-voltage five-prevention computer is used in conjunction with the high-voltage motor cabinet to prevent electrical misoperation.

[0039] The above technical features constitute embodiments of the present application, which have strong adaptability and implementation effect, and unnecessary technical features can be added or reduced according to actual needs to meet the needs of different situations.

Claims

1. A power distribution system fault off-line simulation apparatus, characterized by, The monitoring background is connected with the communication transmission unit, and the communication transmission unit is connected with the power simulation device and the transmission simulation device respectively.

2. The power distribution system fault off-line simulation apparatus according to claim 1, wherein, The communication transmission unit comprises a switch, a first communication management machine and a second communication management machine, the monitoring background is connected with the switch, the switch is connected with the first communication management machine, the second communication management machine and the power simulation device respectively, the first communication management machine is connected with the power simulation device, and the second communication management machine is connected with the transmission simulation device.

3. The off-line simulation apparatus for power distribution system fault according to claim 2, characterized in that, The power simulation device comprises a direct current power supply device and two high-voltage motor cabinets, the direct current power supply device is connected with the two high-voltage motor cabinets, and the two high-voltage motor cabinets are connected with the switch and the first communication management machine.

4. The off-line simulation apparatus for power distribution system according to claim 3, wherein The high-voltage motor cabinet is further provided with a pyrolysis particle detector and a temperature measuring device, and the output ends of the pyrolysis particle detector and the temperature measuring device are connected at the signal output interface of the high-voltage motor cabinet.

5. The off-line simulation apparatus for power distribution system according to claim 2 or 3 or 4, characterized by, The transmission simulation device comprises a low-voltage power distribution cabinet, a low-voltage motor and an operation box, the low-voltage motor and the operation box are connected with the low-voltage power distribution cabinet, and the low-voltage power distribution cabinet is connected with the second communication management machine.

6. The off-line simulation apparatus for power distribution system according to claim 5, wherein The low-voltage power distribution cabinet is further provided with a pyrolysis particle detector and a temperature measuring device, and the output ends of the pyrolysis particle detector and the temperature measuring device are connected at the signal output interface of the low-voltage power distribution cabinet.

7. The off-line simulation apparatus for power distribution system according to claim 1 or 2 or 3 or 4 or 6, characterized by, The monitoring background comprises a device monitoring computer and a high-voltage five-prevention computer, and the device monitoring computer and the high-voltage five-prevention computer are connected with the switch.

8. The off-line simulation apparatus for power distribution system failure according to claim 5, wherein The monitoring background comprises a device monitoring computer and a high-voltage five-prevention computer, and the device monitoring computer and the high-voltage five-prevention computer are connected with the switch.

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