CN114156738B - Distributed parameter acquisition system for low-voltage power distribution cabinet - Google Patents
Distributed parameter acquisition system for low-voltage power distribution cabinet Download PDFInfo
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- CN114156738B CN114156738B CN202111474549.0A CN202111474549A CN114156738B CN 114156738 B CN114156738 B CN 114156738B CN 202111474549 A CN202111474549 A CN 202111474549A CN 114156738 B CN114156738 B CN 114156738B
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- 238000012545 processing Methods 0.000 claims abstract description 86
- 230000010365 information processing Effects 0.000 claims abstract description 37
- 230000001360 synchronised effect Effects 0.000 claims abstract description 35
- 238000012423 maintenance Methods 0.000 claims abstract description 10
- 230000001960 triggered effect Effects 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 54
- 238000010276 construction Methods 0.000 abstract description 6
- 238000007726 management method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004148 unit process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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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
- H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to the field of electric information acquisition, and particularly discloses a distributed parameter acquisition system for a low-voltage power distribution cabinet, which comprises a direct-current power supply unit, a voltage processing unit, a current processing unit, an information processing unit and an information storage unit, wherein the direct-current power supply unit is used for supplying power to the voltage processing unit, the current processing unit, the information processing unit and the information storage unit; the voltage processing unit is used for collecting the voltage information of the low-voltage power distribution cabinet in real time, transmitting the voltage information to the information processing unit and generating a synchronous signal for triggering the current processing unit to work; the current processing unit is used for acquiring current information after being triggered by the synchronous signal and transmitting the current information to the information processing unit; the information processing unit is used for integrating the voltage information and the current information to obtain full-power information and transmitting the full-power information to the information storage unit; the information storage unit is used for storing the full-electricity information and transmitting the full-electricity information to the power distribution operation and maintenance management system. The invention has simple structure, small volume, low cost, flexibility of the internal configuration of the acquisition system, less wiring and high safety during construction.
Description
Technical Field
The invention relates to the field of electrical information acquisition.
Background
The existing operation and maintenance system of the power user distribution room in the property management is more and more widely applied, but because of the inconsistency of the intelligent monitoring requirements for high and low voltages in the early construction of each distribution room, particularly the low voltage distribution part, the intelligent level difference is larger, the low voltage distribution cabinet with the intelligent instrument is additionally arranged, the improvement is relatively easy, the information of the low voltage distribution cabinet is only required to be transmitted to a lumped unit in a communication mode and then is uploaded to an operation and maintenance system, but the load electricity of the low voltage distribution cabinet without the intelligent instrument is required to be acquired and transmitted to the operation and maintenance system through the additional intelligent acquisition equipment, the intelligent module unit networking is adopted to acquire analog quantity signals of one side of the low voltage switch cabinet, and three-phase voltage signals, namely public voltage signals of the low voltage switch cabinet, are all the same in phase and amplitude. Acquiring full electric quantity information of each branch, acquiring three-phase current and voltage information connected to the branch through a unit processing module, performing A/D conversion, or inputting the information to an electric degree special chip, performing algorithm operation in a CPU, and finally obtaining current, voltage, active and reactive power and electric degree or other harmonic information of the low-voltage switch cabinet. Each intelligent unit processing module is connected with three-phase voltage strong electric signal processing, but the wiring is complicated, or power failure construction is needed and the time is long; or a plurality of electric shock dangerous points exist in uninterrupted construction and maintenance; before each loop is connected, the intelligent unit processing module is connected through the fuse terminals or micro-breaks, and then the intelligent unit processing module is connected to the low-voltage power distribution cabinet with a plurality of branches, namely, tens of fuse terminals are connected, so that the occupied space is large. In addition, if an intelligent processing device integrates all current amounts and a three-phase voltage amount processing circuit, the device has poor flexibility and can only be configured according to the maximum number of loops, so that redundant loops are idle. To the above-mentioned problem that exists, it is very necessary to research and design a novel distributed parameter acquisition system for low-voltage distribution cabinet, to overcome the problem that exists among the current information acquisition technology of gathering low-voltage distribution cabinet.
Disclosure of Invention
In order to solve the problems in the existing information acquisition technology for acquiring the low-voltage power distribution cabinet, the invention provides a distributed parameter acquisition system for the low-voltage power distribution cabinet.
The technical scheme adopted by the invention for achieving the purpose is as follows: a distributed parameter acquisition system for a low-voltage power distribution cabinet comprises a direct-current power supply unit, a voltage processing unit, a current processing unit, an information processing unit and an information storage unit; the direct current power supply unit is used for supplying power to the voltage processing unit, the current processing unit, the information processing unit and the information storage unit; the voltage processing unit is used for collecting voltage information of the low-voltage power distribution cabinet in real time, transmitting the voltage information to the information processing unit and generating a synchronous signal triggering the current processing unit to work; the current processing unit is used for acquiring current information after being triggered by the synchronous signal and transmitting the current information to the information processing unit; the information processing unit is used for integrating the voltage information and the current information to obtain full-power information and transmitting the full-power information to the information storage unit; the information storage unit is used for storing the full-power information and transmitting the full-power information to the power distribution operation and maintenance management system.
Preferably, the dc power supply unit is configured to convert an ac voltage into a low-voltage dc voltage and then supply power to the voltage processing unit, the current processing unit, the information processing unit, and the information storage unit.
Preferably, the voltage processing unit comprises a voltage acquisition module, a voltage CPU module, a first voltage communication module and a second voltage communication module; the voltage acquisition module is used for acquiring and storing three-phase alternating-current voltage information of the low-voltage power distribution cabinet in real time; the voltage CPU module is used for adding a time mark to the voltage information and generating a synchronous signal triggering the current processing unit to acquire when a preset condition is reached; the first voltage communication module is used for transmitting the synchronous signals to the current processing unit at a high speed; the second voltage communication module is used for transmitting the voltage information with the time mark to the information processing unit when the preset condition is met.
Preferably, the first voltage communication module and the second voltage communication module both adopt a two-wire system communication mode.
Preferably, the current processing unit comprises at least one current processing subunit.
Preferably, the number of the current processing subunits corresponds to the number of the outgoing line branches of the low-voltage power distribution cabinet, and the current processing subunits are arranged on the outgoing line branches.
Preferably, the current processing sub-unit comprises a first current communication sub-module, a current acquisition sub-module, a current CPU sub-module and a second current communication sub-module; the first current communication sub-module is used for receiving the synchronous signal; the current acquisition sub-module is used for acquiring and storing current information after being triggered by the synchronous signal; the current CPU submodule is used for adding a time mark for the current information; the second current communication submodule is used for transmitting the current information with the time mark to the information processing unit.
Preferably, the first current communication sub-module and the second current communication sub-module both adopt a two-wire system communication mode.
Preferably, the information processing unit performs synchronous processing on the voltage information and the current information according to the time mark to obtain voltage information and current information which are synchronously collected at different moments, and calculates the processed information to obtain the full-power information.
The distributed parameter acquisition system for the low-voltage power distribution cabinet has the advantages of simple structure, small volume, low cost, flexibility in internal configuration of the acquisition system, reduced number of loops for voltage acquisition of the low-voltage power distribution cabinet, less wiring during construction, improvement of safety during construction, optimization of a processing mode of voltage acquisition, high-speed data communication between a voltage processing unit and a current processing unit, guarantee of timeliness of information acquisition, synchronization of current information and voltage information is guaranteed by synchronous trigger signals generated by the voltage processing unit, and accuracy of full-electric quantity information is guaranteed by voltage information and current information with time marks.
Drawings
FIG. 1 is a block diagram of a distributed parameter acquisition system for a low-voltage power distribution cabinet according to an embodiment of the present invention;
FIG. 2 is a block diagram of a voltage processing unit according to an embodiment of the present invention;
FIG. 3 is a block diagram of a current handling unit according to an embodiment of the present invention;
fig. 4 is a block diagram of a current handling subunit of an embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Example 1
The distributed parameter acquisition system for the low-voltage power distribution cabinet is shown in figure 1, and comprises a direct-current power supply unit, a voltage processing unit, a current processing unit, an information processing unit and an information storage unit; the direct current power supply unit is used for supplying power to the voltage processing unit, the current processing unit, the information processing unit and the information storage unit; the voltage processing unit is used for collecting three-phase alternating current voltage information of the low-voltage power distribution cabinet in real time and generating a triggering synchronous signal, and preset conditions for generating the triggering synchronous signal can be set according to conditions, and can be voltage zero crossing points or 10V, 20V and 30V. The synchronization signal may be generated by a hardware circuit, such as a zero-crossing comparison circuit, or may be generated by software calculation. And the synchronous clock is used for transmitting the acquired time-stamp-attached voltage information of the low-voltage power distribution cabinet to the information processing unit, simultaneously transmitting the synchronous signal to a current processing unit of a loop in a communication or hardware triggering mode, triggering the current processing unit to start to acquire and store a current signal, and transmitting the current signal with the time stamp to the information processing unit. The information processing unit processes the voltage information and the current information according to the time mark to obtain corresponding voltage information and current information which are synchronously collected at different moments, and performs algorithm processing on the voltage information and the current information to obtain full-electric-quantity information of the loop, and then the full-electric-quantity information is transmitted to the information storage unit which is used for storing the full-electric-quantity information.
As shown in fig. 2, the voltage processing unit may include a voltage acquisition module, a voltage CPU module, a first voltage communication module, and a second voltage communication module; the voltage acquisition module is used for acquiring and storing the voltage information of the low-voltage power distribution cabinet in real time and transmitting the voltage information to the voltage CPU module; the voltage CPU module is used for generating a synchronous signal triggering the current processing unit to work when reaching a preset condition, adding a time mark for the voltage information according to the synchronous signal as a timing synchronous clock, transmitting the synchronous signal to the first voltage communication module, and transmitting the voltage information with the time mark to the second voltage communication module; the first voltage communication module is used for transmitting the synchronous signal generated by the voltage CPU module to the current processing unit at high speed, and the transmission mode of the first voltage communication module can be a communication or hardware triggering mode; the second voltage communication module is used for transmitting the voltage information with the time mark of the low-voltage power distribution cabinet acquired in real time to the information processing unit at a high speed when the preset condition is reached. The preset condition for triggering the synchronous signal of the current processing unit to work can be set according to the situation, and the preset condition can be a voltage zero crossing point or 10V, 20V and 30V. The synchronization signal may be generated by a hardware circuit, such as a zero-crossing comparison circuit, or may be generated by software calculation. The first voltage communication module and the second voltage communication module can adopt a two-wire system communication mode so as to reduce the number of wiring.
The current processing unit is used for acquiring current information after being triggered by the synchronous signal and transmitting the current information to the information processing unit, as shown in fig. 3, the current processing unit can comprise at least one current processing subunit, the number of the current processing subunits corresponds to that of outgoing line branches of the low-voltage power distribution cabinet, the current processing subunits are arranged on the outgoing line branches of the low-voltage power distribution cabinet, and the number of the low-voltage power distribution cabinet is generally not more than 12 outgoing line branches, so that the number of the current processing subunits is generally smaller than 12. As shown in fig. 4, the current processing sub-unit may include a first current communication sub-module, a current collection sub-module, a current CPU sub-module, and a second current communication sub-module; the first current communication sub-module is used for receiving the synchronous signal generated by the voltage processing unit and transmitting the synchronous signal to the current acquisition sub-module; the current acquisition submodule is used for acquiring and storing current information after being triggered by the synchronous signal and transmitting the acquired current information to the current CPU submodule; the current CPU sub-module is used for adding a time mark to the current information and transmitting the current information with the time mark to the second current communication sub-module; the second current communication submodule is used for transmitting the current information with the time mark to the information processing unit at a high speed. The first current communication sub-module and the second current communication sub-module can adopt a two-wire system communication mode so as to reduce the number of wires.
The information processing unit is used for integrating the voltage information and the current information to obtain full-power information and transmitting the full-power information to the information storage unit, preferably, the voltage information and the current information are all provided with time marks, the information processing unit synchronously processes the voltage information and the current information according to the time marks, just like the synchronous acquisition of the voltage information and the current information, the synchronous acquisition of the voltage information and the current information corresponding to different moments is obtained, the processed synchronous information is calculated to obtain the full-power information, and the full-power information can comprise the current information, the voltage information, the active and reactive power information, the power information or other harmonic information. The information storage unit is used for storing the full-electricity information and transmitting the full-electricity information to the power distribution operation and maintenance management system.
Example 2
The embodiment is basically the same as embodiment 1, except that the current processing unit may transmit the current information with the time stamp to the voltage processing unit, the voltage processing unit processes the current information and the voltage information with the time stamp to obtain full-power information of each branch, and transmits the full-power information to the information processing unit, and the information processing unit transmits the obtained full-power information to the information storage unit, where the information storage unit stores the full-power information and transmits the full-power information to the power distribution operation and maintenance management system.
Example 3
The embodiment is basically the same as embodiment 1, except that the voltage processing unit transmits the voltage information with the time stamp to the current processing unit, the current processing unit processes the current information and the voltage information with the time stamp to obtain full-power information of each branch, and transmits the full-power information to the information processing unit, the information processing unit transmits the obtained full-power information to the information storage unit, the information storage unit stores the full-power information, and the full-power information is transmitted to the power distribution operation and maintenance management system in a wireless internet of things communication mode, and the wireless internet of things communication mode can be bluetooth, WIFI, loRa, zigiBee or NB-IoT and the like.
The invention reduces the number of loops for voltage acquisition of the low-voltage power distribution cabinet, optimizes the processing mode of voltage acquisition, ensures timeliness of information acquisition by high-speed data communication between the voltage processing unit and the current processing unit, ensures synchronicity of current information acquired by the current processing unit by synchronous signals generated by the voltage processing unit, and ensures synchronicity of the voltage information and the current information and correct calculation of full electric quantity by the voltage information and the current information with time marks.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (5)
1. The distributed parameter acquisition system for the low-voltage power distribution cabinet is characterized by comprising a direct-current power supply unit, a voltage processing unit, a current processing unit, an information processing unit and an information storage unit; the direct current power supply unit is used for supplying power to the voltage processing unit, the current processing unit, the information processing unit and the information storage unit; the voltage processing unit is used for collecting voltage information of the low-voltage power distribution cabinet in real time, transmitting the voltage information to the information processing unit and generating a synchronous signal triggering the current processing unit to work; the current processing unit is used for acquiring current information after being triggered by the synchronous signal and transmitting the current information to the information processing unit; the information processing unit is used for integrating the voltage information and the current information to obtain full-power information and transmitting the full-power information to the information storage unit; the information storage unit is used for storing the full-power information and transmitting the full-power information to the power distribution operation and maintenance management system;
the voltage processing unit comprises a voltage acquisition module, a voltage CPU module, a first voltage communication module and a second voltage communication module; the voltage acquisition module is used for acquiring and storing three-phase alternating-current voltage information of the low-voltage power distribution cabinet in real time; the voltage CPU module is used for adding a time mark to the voltage information and generating a synchronous signal triggering the current processing unit to acquire when a preset condition is reached; the first voltage communication module is used for transmitting the synchronous signals to the current processing unit at a high speed; the second voltage communication module is used for transmitting the voltage information with the time mark to the information processing unit when a preset condition is met;
the current processing unit comprises at least one current processing subunit, and the current processing subunit comprises a first current communication sub-module, a current acquisition sub-module, a current CPU sub-module and a second current communication sub-module; the first current communication sub-module is used for receiving the synchronous signal; the current acquisition sub-module is used for acquiring and storing current information after being triggered by the synchronous signal; the current CPU submodule is used for adding a time mark for the current information; the second current communication submodule is used for transmitting the current information with the time mark to the information processing unit;
and the information processing unit performs synchronous processing on the voltage information and the current information according to the time mark to obtain synchronously acquired voltage information and current information corresponding to different moments, and calculates the processed information to obtain the full-power information.
2. The distributed parameter collection system for a low-voltage power distribution cabinet according to claim 1, wherein the direct-current power supply unit is configured to supply power to the voltage processing unit, the current processing unit, the information processing unit and the information storage unit after converting an alternating-current voltage into a low-voltage direct-current voltage.
3. The distributed parameter acquisition system for a low-voltage power distribution cabinet according to claim 1, wherein the first voltage communication module and the second voltage communication module both adopt a two-wire system communication mode.
4. The distributed parameter collection system for a low-voltage power distribution cabinet according to claim 1, wherein the number of the current processing subunits corresponds to the number of outgoing branches of the low-voltage power distribution cabinet, and the current processing subunits are arranged on the outgoing branches.
5. The distributed parameter acquisition system for a low-voltage power distribution cabinet according to claim 1, wherein the first current communication sub-module and the second current communication sub-module both adopt a two-wire system communication mode.
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| CN202111474549.0A CN114156738B (en) | 2021-12-06 | 2021-12-06 | Distributed parameter acquisition system for low-voltage power distribution cabinet |
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| CN202111474549.0A CN114156738B (en) | 2021-12-06 | 2021-12-06 | Distributed parameter acquisition system for low-voltage power distribution cabinet |
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| CN114156738B true CN114156738B (en) | 2024-04-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206132873U (en) * | 2016-08-30 | 2017-04-26 | 杭州鸿雁智能科技有限公司 | A synchronous sampling system for importing power network signal |
| CN107171235A (en) * | 2017-06-30 | 2017-09-15 | 国网北京市电力公司 | Box-type substation |
| CN110994803A (en) * | 2019-12-23 | 2020-04-10 | 广州东方电科自动化有限公司 | Join in marriage electrical information acquisition and processing system of electrical room |
| CN113049865A (en) * | 2019-12-26 | 2021-06-29 | 深圳市凯弦欣能科技有限公司 | Power parameter detection device and method |
| CN113075474A (en) * | 2021-03-24 | 2021-07-06 | 深圳供电局有限公司 | Electric energy measuring system and method |
-
2021
- 2021-12-06 CN CN202111474549.0A patent/CN114156738B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206132873U (en) * | 2016-08-30 | 2017-04-26 | 杭州鸿雁智能科技有限公司 | A synchronous sampling system for importing power network signal |
| CN107171235A (en) * | 2017-06-30 | 2017-09-15 | 国网北京市电力公司 | Box-type substation |
| CN110994803A (en) * | 2019-12-23 | 2020-04-10 | 广州东方电科自动化有限公司 | Join in marriage electrical information acquisition and processing system of electrical room |
| CN113049865A (en) * | 2019-12-26 | 2021-06-29 | 深圳市凯弦欣能科技有限公司 | Power parameter detection device and method |
| CN113075474A (en) * | 2021-03-24 | 2021-07-06 | 深圳供电局有限公司 | Electric energy measuring system and method |
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