CN112467881A - Distribution network automation feeder terminal device who possesses battery management and control - Google Patents
Distribution network automation feeder terminal device who possesses battery management and control Download PDFInfo
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- CN112467881A CN112467881A CN202011351320.3A CN202011351320A CN112467881A CN 112467881 A CN112467881 A CN 112467881A CN 202011351320 A CN202011351320 A CN 202011351320A CN 112467881 A CN112467881 A CN 112467881A
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- storage battery
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- battery management
- feeder terminal
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- 238000004891 communication Methods 0.000 claims abstract description 36
- 230000006641 stabilisation Effects 0.000 claims abstract description 11
- 238000011105 stabilization Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000011664 signaling Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000007726 management method Methods 0.000 description 74
- 239000002253 acid Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000013500 data storage Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Abstract
The invention provides a distribution network automation feeder terminal device with battery management and control, wherein a storage battery management and control module comprises a storage battery management and control microcontroller, and a steady current power supply module, a storage battery voltage acquisition unit and a storage battery management and control communication unit which are respectively connected with the storage battery management and control microcontroller; the current stabilization power supply module is used for being connected with the storage battery, acquiring the output current of the storage battery, and performing direct current conversion and voltage stabilization on the output current of the storage battery input to the current stabilization power supply module; the storage battery voltage acquisition unit is used for acquiring a real-time voltage value of the storage battery through the output current of the storage battery; the invention can monitor the real-time state of the storage battery, and helps operation and maintenance personnel to find the hidden danger of the storage battery of the distribution network automatic feeder terminal device with battery control in time, thereby ensuring that the storage battery can support enough working time of the distribution network automatic feeder terminal device with battery control until power supply is recovered when power failure occurs.
Description
Technical Field
The invention relates to the technical field of distribution automation terminals, in particular to a distribution network automation feeder terminal device with battery management and control.
Background
A distribution network automation feeder terminal unit (DTU) is an intelligent terminal device installed in a distribution network or distribution room and other feeder loops. For example, chinese patent publication No. CN 107508376 a with publication No. 2017.12.22: the feeder terminal device shows that the existing distribution network automation feeder terminal device can be used for collecting data such as voltage, current and the like of a distribution station and a feeder line so as to find faults of the feeder line in time.
The distribution network automation feeder line terminal device is generally provided with a lead-acid storage battery for long-term floating charge standby, so that the lead-acid storage battery can continue to work under the condition of power failure; but most of the time, such devices are installed in outdoor environments; the outdoor environment is changeable and may involve severe conditions such as high temperature, severe cold and the like; due to the characteristics of the lead-acid storage battery, the floating charge voltage needs to be adjusted under different temperature conditions, and meanwhile, the service life of the lead-acid storage battery is greatly influenced by high temperature and low temperature; however, because the built-in battery floats for standby for a long time, the capacity cannot be checked regularly like a substation backup power supply, the performance condition cannot be obtained, and certain hidden danger may exist, so that the working time cannot be supported after power failure.
Disclosure of Invention
Aiming at the limitation of the prior art, the invention provides a distribution network automatic feeder terminal device with battery control, which adopts the technical scheme that:
a distribution network automation feeder terminal device with battery management and control comprises a feeder terminal microcontroller, a storage battery, and a power management and control module and a feeder terminal working module which are respectively connected with the feeder terminal microcontroller; the power supply management and control module is connected with an external power supply and the storage battery, and the external power supply supplies power to the feeder terminal microcontroller, the storage battery and the feeder terminal working module through the power supply management and control module;
the storage battery management and control module comprises a storage battery management and control microcontroller, and a current stabilization power supply module, a storage battery voltage acquisition unit and a storage battery management and control communication unit which are respectively connected with the storage battery management and control microcontroller; the current stabilization power supply module is used for being connected with the storage battery, acquiring the output current of the storage battery, and performing direct current conversion and voltage stabilization on the output current of the storage battery input to the current stabilization power supply module; the storage battery voltage acquisition unit is used for acquiring a real-time voltage value of the storage battery through the output current of the storage battery;
the feeder terminal working module comprises a remote signaling unit; the remote signaling unit is connected with the feeder terminal microcontroller and the storage battery management and control communication unit; the feeder terminal microcontroller acquires the real-time state of the storage battery from the storage battery management and control communication unit through the remote signaling unit; the real-time state of the storage battery comprises a real-time voltage value of the storage battery.
Compared with the prior art, the distribution network automatic feeder terminal device with the storage battery self-checking capability and the battery management and control function provided by the invention can monitor the real-time state of the storage battery and help operation and maintenance personnel to find the hidden danger of the storage battery of the distribution network automatic feeder terminal device with the battery management and control function in time, so that the storage battery can support the sufficient working time of the distribution network automatic feeder terminal device with the battery management and control function until power supply is recovered when power failure occurs.
As a preferred scheme, the storage battery management and control module further comprises a storage battery internal resistance detection unit, and the storage battery internal resistance detection unit is connected with the storage battery management and control microcontroller and the storage battery voltage acquisition unit; the storage battery internal resistance detection unit is used for detecting a storage battery real-time resistance value through the output current of the storage battery and the storage battery real-time voltage value; the real-time state of the storage battery also comprises a real-time resistance value of the storage battery.
As a preferred scheme, the storage battery management and control module further comprises a storage battery temperature acquisition unit, the storage battery temperature acquisition unit is connected with the storage battery management and control microcontroller, and the storage battery temperature acquisition unit is used for acquiring a real-time temperature value of the storage battery through a temperature probe arranged on the storage battery; the real-time state of the storage battery also comprises a storage battery real-time temperature value.
As a preferable scheme, further, the storage battery management and control microcontroller generates corresponding warning information when the real-time state of the storage battery is abnormal, and sends the warning information to the storage battery management and control communication unit; and the feeder terminal microcontroller acquires the alarm information from the storage battery management and control communication unit through the remote signaling unit.
Furthermore, the feeder terminal working module further comprises a feeder terminal communication circuit for communicating with a remote distribution network dispatching automation system; the feeder terminal communication circuit is connected with the feeder terminal microcontroller; and the feeder terminal microcontroller transmits the real-time state and/or alarm information of the storage battery to a remote distribution network dispatching automation system through the feeder terminal communication circuit.
As a preferable mode, the steady-current power supply module performs DC conversion on the output current of the storage battery input to the steady-current power supply module through a DC-DC converter.
As a preferable scheme, the regulated power supply module regulates the output current of the storage battery input to the regulated power supply module through an LDO regulator.
As a preferable scheme, the storage battery comprises a plurality of single batteries connected in parallel or in series; the number of the storage battery management and control modules corresponds to the number of the monocells, and the storage battery management and control modules are respectively connected with one monocell; the storage battery management and control modules are connected through respective storage battery management and control communication units; the remote signaling unit is connected with the storage battery management and control communication unit of one storage battery management and control module.
Preferably, the single cell is a 12V cell.
Preferably, the number of the single cells is 2.
Drawings
Fig. 1 is a schematic view of a distribution network automation feeder terminal device with battery management and control according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a distribution network automation feeder terminal device with battery management and control according to embodiment 2 of the present invention;
fig. 3 is a schematic view of a distribution network automation feeder terminal device with battery management and control according to embodiment 3 of the present invention;
description of reference numerals: 1. a feeder terminal microcontroller; 2. a storage battery; 21. a single cell; 3. a power supply management and control module; 41. a remote signaling unit; 42. a feeder terminal communication circuit; 5. a storage battery management and control module; 51. a storage battery management and control microcontroller; 52. a current stabilization power supply module; 53. a storage battery voltage acquisition unit; 54. a storage battery management and control communication unit; 55. a battery internal resistance detection unit; 56. a storage battery temperature acquisition unit; 561. a temperature probe; 57. a watchdog timer and a singlechip peripheral circuit;
43. a non-interrupt current protection module; 44. a full data security encryption module; 45. a fault recording module; 46. an overload protection module; 47. a synchronous time setting module; 48. a remote control unit; 49. a telemetry unit; 410. a fault detection and reporting and demarcation point control protection module; 411. and a historical data storage module.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The invention is further illustrated below with reference to the figures and examples.
In order to solve the limitation of the prior art, the present embodiment provides a technical solution, and the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.
Referring to fig. 1, a distribution network automation feeder terminal device with battery management and control includes a feeder terminal microcontroller 1, a storage battery 2, and a power management and control module 3 and a feeder terminal working module respectively connected to the feeder terminal microcontroller 1; the power supply management and control module 3 is connected with an external power supply and the storage battery 2, and the external power supply supplies power to the feeder terminal microcontroller 1, the storage battery 2 and the feeder terminal working module through the power supply management and control module 3; the method is characterized in that:
the storage battery management and control system further comprises a storage battery management and control module 5, wherein the storage battery management and control module 5 comprises a storage battery management and control microcontroller 51, and a current stabilization power supply module 52, a storage battery voltage acquisition unit 53 and a storage battery management and control communication unit 54 which are respectively connected with the storage battery management and control microcontroller 51; the steady-current power supply module 52 is configured to be connected to the storage battery 2, obtain an output current of the storage battery 2, and perform dc conversion and voltage stabilization on the output current of the storage battery 2 input to the steady-current power supply module 52; the storage battery voltage acquisition unit 53 is used for acquiring a real-time storage battery voltage value through the output current of the storage battery 2;
the feeder terminal working module comprises a remote signaling unit 41; the remote signaling unit 41 is connected with the feeder terminal microcontroller 1 and the storage battery management and control communication unit 54; the feeder terminal microcontroller 1 acquires the real-time state of the storage battery 2 from the storage battery management and control communication unit 54 through the remote signaling unit 41; the real-time state of the battery 2 includes a battery real-time voltage value.
Compared with the prior art, the distribution network automatic feeder terminal device with the storage battery self-checking capability and the battery management and control function provided by the invention can monitor the real-time state of the storage battery and help operation and maintenance personnel to find the hidden danger of the storage battery of the distribution network automatic feeder terminal device with the battery management and control function in time, so that the storage battery can support the sufficient working time of the distribution network automatic feeder terminal device with the battery management and control function until power supply is recovered when power failure occurs.
Specifically, the feeder terminal microcontroller 1 and the storage battery management and control microcontroller 51 are respectively realized by an MCU (microcontroller unit), which is also called a Single Chip Microcomputer (MCU) or a Single Chip Microcomputer.
When the storage battery of the distribution network automatic feeder terminal device with battery management and control encounters faults or problems such as charging and discharging failure, reverse poles, short circuits, open circuits, overheating, deformation, electrolyte leakage and the like, the voltage of the storage battery is inevitably abnormal. Consequently, monitor the voltage of battery, can help the operation and maintenance personnel in time discover the battery hidden danger, let the operation and maintenance personnel go to the on-the-spot investigation and possess the circumstances that distribution network automation feeder terminal device of battery management and control met, in time overhaul to its trouble.
In an optional embodiment, referring to fig. 2, the storage battery management and control module 5 further includes a watchdog timer and a single chip peripheral circuit 57, and the watchdog timer and single chip peripheral circuit 57 is connected to the storage battery management and control microcontroller 51 and is configured to perform reset protection on the storage battery management and control module 5.
In an alternative embodiment, referring to fig. 3, the feeder terminal working module may include modules for implementing the functions of the distribution network automatic feeder terminal device with battery management and control, such as a non-interruptive current protection module 43, a full data security encryption module 44, a fault recording module 45, an overload protection module 46, a synchronous time comparison module 47, a remote control unit 48, a remote measurement unit 49, a fault detection and reporting and demarcation point control protection module 410, and a historical data storage module 411, which are respectively connected to the feeder terminal microcontroller 1.
As a preferred embodiment, please refer to fig. 2, the battery management and control module 5 further includes a battery internal resistance detection unit 55, and the battery internal resistance detection unit 55 is connected to the battery management and control microcontroller 51 and the battery voltage acquisition unit 53; the storage battery internal resistance detection unit 55 is configured to detect a storage battery real-time resistance value through the output current of the storage battery 2 and a storage battery real-time voltage value; the real-time state of the storage battery also comprises a real-time resistance value of the storage battery.
Through detecting the real-time resistance value of the storage battery, the situation of the storage battery can be known more clearly, operation and maintenance personnel can be helped to accurately investigate the conditions encountered by the distribution network automation feeder terminal device with battery management and control, and the fault can be overhauled in time.
As a preferred embodiment, please refer to fig. 2, the battery management and control module 5 further includes a battery temperature acquisition unit 56, the battery temperature acquisition unit 56 is connected to the battery management and control microcontroller 51, and the battery temperature acquisition unit 56 is configured to acquire a real-time battery temperature value through a temperature probe 561 disposed on the battery 2; the real-time state of the storage battery 2 also comprises a storage battery real-time temperature value.
Through detecting the real-time temperature value of battery, can know the situation of battery more clearly, can help the accurate investigation of fortune dimension personnel to possess the distribution network automation feeder terminal device condition that battery management and control met better, in time overhauls to its trouble.
Further, the storage battery management and control microcontroller 51 generates corresponding warning information when the real-time state of the storage battery 2 is abnormal, and sends the warning information to the storage battery management and control communication unit 54; the feeder terminal microcontroller 1 acquires the alarm information from the battery management and control communication unit 54 through the remote signaling unit 41.
Further, referring to fig. 2, the feeder terminal operating module further includes a feeder terminal communication circuit 42 for communicating with a remote distribution network scheduling automation system; the feeder terminal communication circuit 42 is connected with the feeder terminal microcontroller 1; the feeder terminal microcontroller 1 transmits the real-time state and/or alarm information of the storage battery 2 to a remote distribution network dispatching automation system through the feeder terminal communication circuit 42.
As a preferred embodiment, the steady-current power supply module 52 performs DC conversion on the output current of the storage battery 2 input to the steady-current power supply module 52 by a DC-DC converter.
As a preferred embodiment, the regulated power supply module 52 regulates the output current of the battery 2 input to the regulated power supply module 52 by an LDO regulator.
As a preferred embodiment, please refer to fig. 3, the battery 2 includes several cells connected in parallel or in series; the number of the storage battery management and control modules 5 corresponds to the number of the single batteries 21, and the storage battery management and control modules 5 are respectively connected with one single battery 21; the storage battery management and control modules 5 are connected through respective storage battery management and control communication units 54; the remote signaling unit 41 is connected to the battery management control communication unit 54 of one of the battery management control modules 5.
Specifically, the connection between the battery management and control communication units 54 and the connection between the battery management and control communication unit 54 and the remote signaling unit 41 may be realized through communication modes such as RS232 and RS 485.
Further, the single cell 21 is a 12V cell.
Further, the number of the unit cells 21 is 2.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A distribution network automation feeder terminal device with battery management and control comprises a feeder terminal microcontroller (1), a storage battery (2), a power management and control module (3) and a feeder terminal working module, wherein the power management and control module and the feeder terminal working module are respectively connected with the feeder terminal microcontroller (1); the power supply management and control module (3) is connected with an external power supply and the storage battery (2), and the external power supply supplies power to the feeder terminal microcontroller (1), the storage battery (2) and the feeder terminal working module through the power supply management and control module (3); the method is characterized in that:
the storage battery management and control system is characterized by further comprising a storage battery management and control module (5), wherein the storage battery management and control module (5) comprises a storage battery management and control microcontroller (51), and a steady-current power supply module (52), a storage battery voltage acquisition unit (53) and a storage battery management and control communication unit (54) which are respectively connected with the storage battery management and control microcontroller (51); the steady-current power supply module (52) is used for being connected with the storage battery (2), acquiring the output current of the storage battery (2), and performing direct-current conversion and voltage stabilization on the output current of the storage battery (2) input to the steady-current power supply module (52); the storage battery voltage acquisition unit (53) is used for acquiring a real-time storage battery voltage value through the output current of the storage battery (2);
the feeder terminal working module comprises a remote signaling unit (41); the remote signaling unit (41) is connected with the feeder terminal microcontroller (1) and the storage battery management and control communication unit (54); the feeder terminal microcontroller (1) acquires the real-time state of the storage battery (2) from the storage battery management and control communication unit (54) through the remote signaling unit (41); the real-time state of the storage battery (2) comprises a storage battery real-time voltage value.
2. The distribution network automation feeder termination device with battery management and control according to claim 1, wherein the battery management and control module (5) further comprises a battery internal resistance detection unit (55), the battery internal resistance detection unit (55) is connected to the battery management and control microcontroller (51) and the battery voltage acquisition unit (53); the storage battery internal resistance detection unit (55) is used for detecting a storage battery real-time resistance value through the output current of the storage battery (2) and a storage battery real-time voltage value; the real-time state of the storage battery also comprises a real-time resistance value of the storage battery.
3. The distribution network automation feeder terminal device with battery management and control function according to claim 1, wherein the battery management and control module (5) further comprises a battery temperature acquisition unit (56), the battery temperature acquisition unit (56) is connected to the battery management and control microcontroller (51), and the battery temperature acquisition unit (56) is configured to acquire a battery real-time temperature value through a temperature probe (561) disposed on the battery (2); the real-time state of the storage battery (2) further comprises a storage battery real-time temperature value.
4. The distribution network automation feeder terminal device with battery management and control function according to any one of claims 1 to 3, wherein the battery management and control microcontroller (51) generates corresponding alarm information when the real-time state of the battery (2) is abnormal, and sends the alarm information to the battery management and control communication unit (54); the feeder terminal microcontroller (1) acquires the alarm information from the storage battery management and control communication unit (54) through the remote signaling unit (41).
5. The distribution network automation feeder terminal device with battery management and control as set forth in claim 4, wherein the feeder terminal working module further comprises a feeder terminal communication circuit (42) for communicating with a remote distribution network dispatching automation system; the feeder terminal communication circuit (42) is connected with the feeder terminal microcontroller (1); and the feeder terminal microcontroller (1) transmits the real-time state and/or alarm information of the storage battery (2) to a remote distribution network dispatching automation system through the feeder terminal communication circuit (42).
6. The distribution network automation feeder termination equipment with battery management and control according to claim 1, characterized in that the regulated current power supply module (52) performs DC conversion of the output current of the storage battery (2) input to the regulated current power supply module (52) by a DC-DC converter.
7. The distribution network automation feeder termination device with battery management and control according to claim 1, characterized in that the regulated current supply module (52) regulates the output current of the storage battery (2) input to the regulated current supply module (52) by means of an LDO regulator.
8. The distribution network automation feeder termination equipment with battery management and control according to claim 1, characterized by that, the accumulator (2) comprises several single batteries connected in parallel or in series; the number of the storage battery management and control modules (5) corresponds to the number of the single batteries (21), and the storage battery management and control modules (5) are respectively connected with one single battery (21); the storage battery management and control modules (5) are connected through respective storage battery management and control communication units (54); the remote signaling unit (41) is connected with a storage battery management and control communication unit (54) of one storage battery management and control module (5).
9. The distribution network automation feeder termination device with battery management and control according to claim 8, characterised in that the battery cells (21) are 12V batteries.
10. The distribution network automation feeder termination equipment with battery management and control according to claim 9, characterised in that the number of cells (21) is 2 knots.
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| CN202011351320.3A CN112467881A (en) | 2020-11-27 | 2020-11-27 | Distribution network automation feeder terminal device who possesses battery management and control |
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| CN202011351320.3A CN112467881A (en) | 2020-11-27 | 2020-11-27 | Distribution network automation feeder terminal device who possesses battery management and control |
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Application publication date: 20210309 |