Distribution network equipment cloud control system

Abstract

The utility model discloses a distribution network equipment cloud control system, and relates to the field of distribution network equipment, and the system comprises an operation parameter collection unit which is used for collecting the operation parameters of the distribution network equipment, and controlling the distribution network equipment according to a control instruction; the in-situ PLC unit is connected with the operation parameter acquisition unit and is used for receiving the operation parameters, comparing the operation parameters with a preset protection setting value and generating a control instruction according to a comparison result; and the cloud storage unit is connected with the in-situ PLC unit and is used for storing the operation parameters. According to the invention, the operation parameters and fault information of the distribution network equipment can be mastered in real time, the out-of-limit control action is executed in time, further expansion of fault accidents is prevented, and the safety of workers is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of distribution network equipment, in particular to a distribution network equipment cloud control system. BACKGROUND

[0002] At present, distribution network equipment, especially box-type transformers, ring network cabinets and other equipment, are arranged in a scattered manner, and the frequency of power failure of distribution network equipment is relatively high. The distribution network equipment does not have an online monitoring function, and only when the equipment fails to trip, maintenance personnel can go to the scene to analyze and handle the accident. However, the fault history data is not available, so that the fault cause cannot be correctly judged, and the fault cannot be fundamentally solved.

[0003] At present, in order to master the running state of the distribution network equipment, maintenance personnel need to measure and record the running parameters of each distributed distribution network equipment, which is a great workload. Moreover, the running parameters change greatly, and the measurement and record often have low reference value, and cannot truly reflect the equipment state at the time of failure.

[0004] At present, most high-voltage distribution network equipment, especially box-type transformers and ring network cabinets, need to be operated by operators on site. In order to ensure personal safety, according to the safety operation requirements of high-voltage equipment, high-voltage equipment must be remotely operated, and on-site operation is prohibited. CONTENT OF THE INVENTION

[0005] In order to solve the above problems, the present application provides a distribution network equipment cloud control system.

[0006] A distribution network equipment cloud control system comprises:

[0007] A running parameter acquisition unit is configured to acquire running parameters of the distribution network equipment and control the distribution network equipment according to a control instruction.

[0008] A local PLC unit is connected to the running parameter acquisition unit, configured to receive the running parameters and compare the running parameters with preset protection setting values, and generate a control instruction according to a comparison result.

[0009] A cloud storage unit is connected to the local PLC unit, configured to store the running parameters.

[0010] Optionally, the running parameter acquisition unit comprises:

[0011] A load loop current sensor is configured to acquire currents of each load loop.

[0012] A load loop voltage sensor is configured to acquire voltages of each load loop.

[0013] A control box temperature measurement module is configured to measure the temperature in the control box.

[0014] A power distribution equipment position signal acquisition module is configured to acquire a position signal of the power distribution equipment.

[0015] A control module is configured to control the circuit breaker to be opened according to the control instruction.

[0016] A transformer oil temperature measuring resistor is configured to acquire a temperature of transformer oil.

[0017] A power supply loop current transformer is configured to acquire a power supply loop current.

[0018] A power supply loop voltage transformer is configured to acquire a power supply loop voltage.

[0019] Optionally, the power supply loop current transformer comprises a transformer high-voltage side total power supply current transformer and a transformer low-voltage side total power supply current transformer.

[0020] Optionally, the power supply loop voltage transformer comprises a transformer high-voltage side total power supply voltage transformer and a transformer low-voltage side total power supply voltage transformer.

[0021] Optionally, the on-site PLC unit comprises:

[0022] A 485 serial port module is connected with a load loop current sensor, a load loop voltage sensor and a control box temperature measuring module respectively, and is configured to receive a current, a voltage of each load loop and a temperature in the control box.

[0023] A position signal receiving unit is connected with the power distribution equipment position signal acquisition module and the control module respectively, and is configured to receive a position signal of the power distribution equipment and to send a control signal to the control module.

[0024] An A / D analog-digital subunit is connected with the transformer oil temperature measuring resistor, the power supply loop current transformer and the power supply loop voltage transformer respectively, and is configured to perform analog-digital conversion on the received power supply loop current, power supply loop voltage and transformer oil temperature.

[0025] A PLC logic controller is connected with the 485 serial port module, the position signal receiving unit and the A / D analog-digital subunit respectively, and is configured to perform data interaction with the 485 serial port module, the position signal receiving unit and the A / D analog-digital subunit, to compare the received operating parameters with preset protection setting values, and to generate a control instruction according to a comparison result.

[0026] Optionally, the on-site PLC unit further comprises a wireless communication module, and the PLC logic controller communicates with the cloud storage unit through the wireless communication module.

[0027] Optionally, the wireless communication module is a 4G sub-module or a LAN router.

[0028] Optionally, the cloud storage unit comprises a cloud server, wherein the cloud server is installed with a gateway firewall; and the cloud server is configured to store the operation data in the cloud.

[0029] Optionally, the power distribution equipment cloud control system further comprises:

[0030] A user monitoring unit is connected to the cloud server and displays the operation data through a visual interface.

[0031] Optionally, the user monitoring unit comprises a plurality of mobile terminals and a plurality of PC terminals.

[0032] According to the embodiments provided in the application, the application has the following technical effects:

[0033] (1) The power distribution equipment cloud control system provided in the application stores the operation data through the cloud storage unit, thereby facilitating the query of historical data and the analysis of faults; and the device state at the time of the fault can be truly reflected.

[0034] (2) The power distribution equipment cloud control system provided in the application performs operation on the operation parameters of the power distribution equipment through the local PLC unit, and the device state at the time of the fault can be truly reflected.

[0035] (3) The power distribution equipment cloud control system provided in the application compares the operation data and the protection setting value through the local PLC unit, thereby generating a control instruction to control the power distribution equipment, preventing the further expansion of the fault, and ensuring the safety of the staff. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0037] Figure 1 The functional module schematic diagram of the power distribution equipment cloud control system provided in an embodiment of the application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0039] In order to make the above objectives, characteristics and advantages of the present application more apparent, further specific embodiments will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] In one exemplary embodiment, as shown in Figure 1 A power distribution equipment cloud control system is provided, comprising: a running parameter acquisition unit 1, a local PLC unit 2, and a cloud storage unit 3. Each unit will be described in detail below.

[0041] (1) The running parameter acquisition unit 1 is used to acquire the running parameters of the power distribution equipment and control the power distribution equipment according to the control instruction.

[0042] The running parameter acquisition unit 1 includes a load loop current sensor 11, a load loop voltage sensor 12, a control box temperature measurement module 13, a power distribution equipment position signal acquisition module 14, a control module 15, a transformer oil temperature measurement resistor 16, a power supply loop current transformer 17, and a power supply loop voltage transformer 18.

[0043] 1) The load loop current sensor 11 is used to acquire the current of each load loop.

[0044] An open-type current transformer is used for flexible installation and measurement of the current of each 380V load loop. The load loop current sensor 11 acquires signals and inputs them into a multifunctional power parameter table, with an address value updated every 0.5 seconds.

[0045] 2) The load loop voltage sensor 12 is used to acquire the voltage of each load loop.

[0046] It is connected to the load side of each load loop and measures the voltage value of each 380V load loop to determine whether there is voltage loss or voltage drop. The load loop voltage sensor 12 acquires signals and inputs them into a multifunctional power parameter table, with an address value updated every 0.5 seconds.

[0047] 3) The control box temperature measurement module 13 is used to measure the temperature inside the control box.

[0048] The temperature value of the control box temperature measurement module 13 is updated every 1 second.

[0049] 4) The power distribution equipment position signal acquisition module 14 is used to acquire the position signal of the power distribution equipment.

[0050] The position signal of the auxiliary contact points of the circuit breaker, knife switch, etc. is input into the input signal of the PLC to monitor the position state of the circuit breaker, knife switch, etc. in real time.

[0051] 5) The control module 15 is used to control the disconnection of the circuit breaker according to the control instruction.

[0052] By controlling the energization of the closing and opening coil of the circuit breaker, the remote closing and opening operation of the circuit breaker is performed.

[0053] 6) The transformer oil temperature measuring resistor 16 is used to collect the temperature of the transformer oil.

[0054] By converting the change of the resistance value of the PT100 temperature measuring resistor into an analog signal of 4-20 mA or 0-10 V, the temperature of the transformer oil is detected in real time and continuously.

[0055] 7) The power circuit current transformer 17 is used to collect the power circuit current.

[0056] The power circuit current transformer 17 includes a transformer high-voltage side total power current transformer and a transformer low-voltage side total power current transformer, which convert the secondary side 0-5 A into an analog signal of 4-20 mA or 0-10 V.

[0057] 8) The power circuit voltage transformer 18 is used to collect the power circuit voltage.

[0058] The power circuit voltage transformer 18 includes a transformer high-voltage side total power voltage transformer and a transformer low-voltage side total power voltage transformer. The transformer high-voltage side total power voltage transformer converts high-voltage voltages of 10 kV, 30 kV, 66 kV, etc. into 100 V low-voltage voltage; the transformer low-voltage side total power voltage transformer can be converted into 100 V low-voltage voltage or directly measured as 380 V. The secondary side 0-100 V is converted into an analog signal of 4-20 mA or 0-10 V.

[0059] (2) The on-site PLC unit 2 is connected with the operating parameter collection unit 1, used to receive the operating parameters and compare the operating parameters with preset protection setting values, and generate control instructions according to the comparison results.

[0060] The on-site PLC unit 2 includes a 485 serial port module 21, a position signal receiving unit 22, an A / D analog-digital subunit 23, a PLC logic controller 24, and a wireless communication module 25.

[0061] 1) The 485 serial port module 21 is connected with the load circuit current sensor 11, the load circuit voltage sensor 12, and the control box temperature measuring module 13, respectively, used to receive the current, voltage of each load circuit, and the temperature in the control box.

[0062] The 485 serial port module 21 reads the current register address value and the voltage register address value of the multifunctional power parameter table once every 0.5 seconds. The 485 serial port module 21 reads the temperature register address value once every 1 second. The automatic start and stop of the heating plate at the set temperature are realized.

[0063] 2) Position signal receiving unit 22, connected with power distribution equipment position signal acquisition module 14 and control module 15 respectively, for receiving the position signal of the power distribution equipment, and for sending the control signal to the control module.

[0064] 3) A / D module subunit 23, connected with transformer oil temperature measuring resistor 16, power circuit current transformer 17 and power circuit voltage transformer 18 respectively, for analog-digital conversion of the received power circuit current, power circuit voltage and transformer oil temperature.

[0065] In order to realize real-time protection of transformer, line and other power distribution equipment, A / D module subunit 23 performs analog-digital conversion of the power circuit current, power circuit voltage and transformer oil temperature, and real-time monitoring, 0 interval, 0 delay, immediately disconnects the breakers on both sides of the transformer when overcurrent occurs, protecting the safe operation of the power distribution equipment

[0066] 4) PLC logic controller 24, connected with 485 serial port module 21, position signal receiving unit 22 and A / D module subunit 23 respectively, for data interaction with 485 serial port module 21, position signal receiving unit 22 and A / D module subunit 23, comparing the received operating parameters with the preset protection setting value, and generating control instructions according to the comparison results. Thus, timely alarm push and protection action execution can be performed when equipment failure occurs, preventing further expansion of the fault.

[0067] 4) Wireless communication module 25, the PLC logic controller 24 communicates with the cloud storage unit 3 through the wireless communication module 25. The wireless communication module 25 is a 4G sub-module or a LAN router.

[0068] The local PLC unit 2 transmits operating parameters in real time to the cloud storage unit 3 through the 4G sub-module or the LAN router, interacts with the cloud storage unit 3, realizes data uploading and control issuing, and realizes online browsing of data, historical data query and remote control functions of the user terminal.

[0069] The local PLC unit 2 is the core unit of the system and can operate independently of the cloud storage unit 3. Even if the cloud storage unit 3 is in a network interruption state, the local PLC unit 2 can still operate independently, realizing protection and control of each power distribution equipment.

[0070] (3) Cloud storage unit 3, connected with the local PLC unit 2, for operating parameters.

[0071] The cloud storage unit 3 mainly stores operating parameters through the cloud server and interacts with the user terminal for data, realizing real-time data monitoring, historical data query and remote device control.

[0072] The cloud server realizes management and distribution of user permissions, and different operation permissions are distributed according to user permission levels, different user groups such as only browsing, controllable, and value adjustable are distributed with different permission functions.

[0073] The cloud server uses a dedicated port and installs a gateway firewall, and adopts a device ID verification mode to ensure data security.

[0074] Further, the power distribution equipment cloud control system provided in the application further comprises a user monitoring unit. The user monitoring unit is connected with the cloud server and displays operation data through a visual interface. The user monitoring unit comprises a plurality of mobile phone terminals and a plurality of PC terminals.

[0075] The user monitoring unit is a visual interface of the terminal user. Through interface configuration, the terminal user realizes real-time online monitoring and remote operation control of the power distribution equipment through a mobile phone APP or a PC terminal, and realizes real-time monitoring of the running state and running parameters of the equipment. As long as there is a mobile phone signal or a PC terminal with internet network, real-time monitoring and information pushing can be performed at any time and anywhere.

[0076] The power distribution equipment cloud control system provided in the application can realize real-time online monitoring of the running state of the power distribution equipment, real-time monitoring of the running parameters and fault information of the power distribution equipment, and has strong real-time performance and high efficiency. The fault information is mainly a result flag bit after comparison of operation data and protection setting value. For example, when the preset voltage protection setting value is 245V, if the collected voltage value of a loop is greater than 245V, the voltage overhigh fault flag bit of the loop is set to 1; when the preset current protection setting value is 150A, if the collected current value of a loop is greater than 150A, the current overhigh fault flag bit of the loop is set to 1. When a fault flag bit is 1, the fault information is pushed in time, and the running state of the equipment is monitored in real time.

[0077] In the application, the running parameter acquisition unit 1 realizes real-time online acquisition of the running parameters of the power distribution equipment, the local PLC unit performs real-time operation comparison, when overcurrent, overvoltage, undercurrent, voltage drop and other faults occur in the equipment, the over-limit control action is executed in time, and the further expansion of the fault accident is prevented. The cloud storage unit 3 realizes instant monitoring of the terminal user, is convenient and efficient, and the running state of the equipment is monitored in real time. After the equipment maintenance personnel master the running law through real-time monitoring, the load can be redistributed, and the user side can be improved to prevent the aggravation of three-phase imbalance. When a fault occurs, historical data is retrieved, abnormal changes of electrical parameter values of each loop are analyzed, fault analysis is performed, historical data can be checked, and fault analysis is facilitated.

[0078] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0079] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0080] The principles and implementation modes of the present application are described by applying specific examples herein, and the above embodiment descriptions are only used to help understand the method and its core idea of the present application; meanwhile, for those skilled in the art, the specific implementation modes and application ranges will be changed according to the idea of the present application. In conclusion, the content of the present application should not be understood as a limitation.

Claims

1. A network device cloud control system, characterized by, The utility model relates to a kind of power distribution network equipment cloud control system, including: Running parameter acquisition unit, for acquiring the running parameter of distribution network equipment, and according to control instruction, the distribution network equipment is controlled; Local PLC unit, connected with the running parameter acquisition unit, for receiving the running parameter, and the running parameter is compared with preset protection setting value, control instruction is generated according to comparison result; Cloud storage unit, connected with the local PLC unit, for storing the running parameter; The running parameter acquisition unit includes: Load loop current sensor, for acquiring the current of each load loop; Load loop voltage sensor, for acquiring the voltage of each load loop; Control box temperature measurement module, for measuring the temperature in control box; Power distribution equipment position signal acquisition module, for acquiring the position signal of power distribution equipment; Control module, for controlling circuit breaker to disconnect according to the control instruction; Transformer oil temperature measurement resistance, for acquiring the temperature of transformer oil; Power loop current transformer, for acquiring power loop current; Power loop voltage transformer, for acquiring power loop voltage.

2. The cloud control system of claim 1, wherein, The power loop current transformer includes: transformer high-voltage side total power current transformer and transformer low-voltage side total power current transformer.

3. The cloud control system of claim 1, wherein, The power loop voltage transformer includes: transformer high-voltage side total power voltage transformer and transformer low-voltage side total power voltage transformer.

4. The cloud control system of claim 1, wherein, The local PLC unit includes: 485 serial module, connected with load loop current sensor, load loop voltage sensor and control box temperature measurement module respectively, for receiving the current, voltage of each load loop and the temperature in control box; Position signal receiving unit, connected with power distribution equipment position signal acquisition module and control module respectively, for receiving the position signal of power distribution equipment, and for sending control signal to control module; A / D analog-digital subunit, connected with transformer oil temperature measurement resistance, power loop current transformer and power loop voltage transformer respectively, for analog-digital conversion to the received power loop current, power loop voltage and the temperature of transformer oil; PLC logic controller, connected with 485 serial module, position signal receiving unit and A / D analog-digital subunit respectively, for data interaction with 485 serial module, position signal receiving unit and A / D analog-digital subunit, comparing the received running parameter with preset protection setting value, control instruction is generated according to comparison result.

5. The cloud control system of claim 4, wherein, The local PLC unit further includes wireless communication module, and the PLC logic controller communicates with the cloud storage unit through wireless communication module.

6. The cloud control system of claim 5, wherein, The wireless communication module is 4G submodule or LAN route.

7. The cloud control system of network devices of claim 1, wherein, The cloud storage unit includes: cloud server, and the cloud server is installed with gateway firewall;The cloud server is used for cloud storage to operation data.

8. The cloud control system of claim 7, wherein, The power distribution network equipment cloud control system further includes: User monitoring unit, connected with the cloud server, and displays operation data through visual interface.

9. The cloud control system of claim 8, wherein, The user monitoring unit includes multiple mobile phone terminals and multiple PC terminals.

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