CN114301894A - Method for monitoring and managing entity power grid node device by virtual power grid - Google Patents
Method for monitoring and managing entity power grid node device by virtual power grid Download PDFInfo
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Abstract
A method for monitoring and managing node devices of an entity power grid by a virtual power grid mainly comprises single-phase failure report, three-phase failure, double-power-supply conversion, single-phase failure and other devices of a failure node, a communication node comprises single-phase failure report, double-power-supply conversion, detection (including display, smoke sense, light sense, pressure, liquid level, approach, vibration, infrared, magnetic sense, sound wave, gas, temperature, humidity, water meter, gas meter, other devices and the like), centralized monitoring, monitoring of each ladder computer, data center service and other devices, wherein the single-phase failure report device integrating the failure node, the communication node, the virtual power grid and the intersection point of the entity power grid and the entity power grid is an information source of the virtual power grid, and therefore the virtual power grid can possibly use an artificial intelligence technology to enable all the node devices of the failure node devices of the entity power grid from power generation to power utilization terminals to be in a tree-shaped data chain type through cloud computing and all the various communication node devices to be in a centralized manner Internet of things and mixed defense joint control.
Description
The invention relates to the technical field of information, in particular to a method for monitoring and managing a physical power grid node device by a virtual power grid.
Background art the existing grid nodes have two major technical disadvantages, one is that the informatization degree of all single-phase and three-phase open circuit node equipment from power generation to power utilization on a power transmission line is low, and basically, the electric leakage, short circuit, current overload and the like of each open circuit node equipment adopt an analog control technology, in particular a current thermal tripping technology, namely, the overcurrent identification is realized by means of the deformation of different heat-resistant bimetallic strips which actively generate heat by hardware thereof to drive the tripping mechanism to trip, the technology causes unstable tightness of the wire of the equipment interface of the full-line open circuit node due to temperature change, is easy to generate virtual loose, and is the biggest hidden danger of causing electrical fire because the copper wire has to be used as the transmission wire due to heat, and the open circuit node is strong current, the development of informatization is difficult to be restricted by communication, and particularly, three-phase open circuit nodes are multi-faceted, wide and dispersed in an entity power grid point, the cost for carrying out wired and wireless communication is high, and the full coverage cannot be realized; and secondly, each type of detection node equipment self-forming system connected on the traditional communication line comprises a water meter, an electric meter, a gas meter, fire control, security protection and the like, wherein each type of detection node equipment comprises a set of centralized communication equipment, a plurality of centralized communication equipment coexist frequently in the same installation environment, the communication line is repeatedly constructed and is in a normal state, and each type of detection node equipment is independently managed, so that resources are wasted, the development of the joint defense joint control technology is restricted, if a fire alarm neighbor is not aware of the occurrence of a fire alarm, the fire alarm is informed to the neighbor of an alarm user, and the like, the fire control water supply equipment is basically laid out, the crowd death and crowd injury are frequent, and the reason is that the analog control technical means is delayed and cannot meet the requirement of social development in a new period.
The invention aims to provide a method for monitoring and managing an entity power grid node device by a virtual power grid, which aims to realize the informatization of all broken node equipment and communication node equipment of the entity power grid from power generation to a power utilization terminal and realize the aims of centralized communication generation and control mode generation and aluminum-to-copper replacement of a power transmission conductor.
In order to achieve the above object, the present invention provides a method for monitoring and managing an entity grid node device by a virtual grid, which mainly comprises a single-phase breaking alarm device (referred to as a single-phase breaking alarm device), a three-phase breaking device, a dual-power conversion device, and a single-phase breaking device, wherein a communication node comprises a single-phase breaking alarm device, a dual-power conversion device, a detection device (including a display device, a smoke sensor, a light sensor, a pressure sensor, a liquid level sensor, an approach sensor, a vibration sensor, an infrared sensor, a magnetic sensor, a sound wave sensor, a gas sensor, a temperature sensor, a humidity sensor, a water meter, a gas meter, and others), a centralized virtual grid monitoring device (referred to as a centralized monitoring device), a virtual grid monitoring service device of each ladder computer (referred to as a certain ladder computer monitoring device), a data center service device (referred to as a data center), and the like, and the single-phase breaking alarm device integrating the breaking node and the virtual grid and the entity grid junction is an information source, therefore, the virtual power grid can utilize the artificial intelligence technology to enable all circuit breaking node devices of the entity power grid from power generation to the power utilization terminal to be in a tree-shaped data chain type internet of things and all communication node devices to be in a centralized type internet of things and mixed defense joint control through cloud computing by utilizing big data uploaded by a plurality of single-phase circuit breaking devices in real time;
the software for monitoring the three-phase circuit breaking device by each stage of monitoring device comprises a three-phase open circuit reporting leakage short circuit (open-phase open circuit reporting blowing) when the function configuration is leakage short circuit, a three-phase open circuit reporting leakage short circuit (open-phase open circuit reporting blowing) when the function configuration is leakage short circuit blowing, a three-phase open circuit reporting short circuit (open-phase open circuit reporting blowing) when the function configuration is short circuit blowing, a special equipment name is added before the function configuration when a superior has special equipment, when the superior has the special equipment, a computer is applied for presetting before terminal is pulled out to switch back, then the terminal is pulled out to switch back, when the group terminal has single-phase circuit breaking device, the leakage short circuit, the over-short voltage, the manual, the property, the fire fighting, the earthquake, the emergency and the like, when the group has the main ammeter of the single-phase node, the alarm is identified, and the alarm is self, The system comprises programs and processes such as settlement and sum early warning of 21 group meters, corresponding identification and alarm when a brake is pulled for owing fee limit, settlement and sum early warning of 6 group meters such as a main electric meter, an auxiliary electric meter, a main and auxiliary electric meter, a water meter, a gas meter and a main and auxiliary water-gas meter of a self three-phase node, public single-phase fault report devices of the self single-phase or three-phase node, sharing settlement of various meters corresponding to various types of shared settlement and private single-phase fault report devices, mixed defense linkage of various communication node devices and the like, wherein the 7x3 of the auxiliary electric meter, the water meter, the gas meter, the line loss meter, the main and auxiliary meter, the water meter, the gas meter and the main and auxiliary meter are subjected to corresponding identification and alarm when the brake is pulled for owing fee limit;
a data source: the data and alarm information uploaded by the single-phase breaking device are data sources of the centralized monitoring device, the data calculated by the subordinate branch three-phase breaking device of the three-phase breaking device monitored by the centralized monitoring device is a data source of the superior three-phase breaking device, the data calculated by the total three-phase breaking device is a data source of the 1-step computer monitoring device, the data calculated by the subordinate branch three-phase breaking device of the three-phase breaking device monitored by the 1-step computer monitoring device is a data source of the superior three-phase breaking device, the data calculated by the total three-phase breaking device is a data source of the 2-step computer monitoring device, and so on, the data calculated by the total three-phase breaking device of the inferior three-phase breaking device is a data source of the superior three-phase computer monitoring device;
when any monitoring device monitors 1 three-phase circuit breaking device, the device is a total three-phase circuit breaking device, and when any monitoring device monitors a plurality of upper and lower three-phase circuit breaking devices, the uppermost level is the total three-phase circuit breaking device;
during operation, when the three-phase circuit breaking device is directly connected with the lower branch single-phase interruption reporting device or directly connected with the lower branch three-phase circuit breaking device, the real-time current load is calculated according to a user-defined line loss rate preset by computer profiling, and the calculation formulas for identifying the real-time phase current load are respectively as follows:
when the three-phase circuit breaker is directly connected with the lower-level branch single-phase alarm breaking device
Real-time phase current load is equal to the sum of phase data corresponding to the directly connected subordinate branch single-phase interruption device and the sum of phase data corresponding to the directly connected subordinate branch single-phase interruption device, and X self-defined line loss rate
When the three-phase breaking device is directly connected with the lower-level branch three-phase breaking device
Real-time phase current load is defined as the sum of phase data corresponding to the directly connected lower-level branch three-phase circuit breaking device plus X self-defined line loss rate
In operation, when the three-phase circuit breaking device monitored by any monitoring device is overloaded and the switching-off is overrun by the alarm phase current or the unbalance switching-off is overrun and needs to be deloaded and adjusted, in order to reduce the power failure range of the three-phase circuit breaking device, the switching-off number and the self-defined switching-off rate of the subordinate branch single-phase circuit breaking device directly or indirectly connected with the corresponding phase are preset according to computer profiling to control the power failure range, and the calculation formula of the switching-off number of the subordinate branch single-phase circuit breaking device directly or indirectly connected with the subordinate branch single-phase circuit breaking device is as follows:
self-defined switching-off rate of preset phase switching-off quantity, namely total number X of directly or indirectly connected subordinate branch single-phase interruption devices
The three-phase balance degree calculation formula of the three-phase open circuit node device is as follows:
three-phase balance degree (maximum real-time current load-minimum real-time current load) ÷ maximum real-time current load
When the upper and lower three-phase circuit breaking devices monitored by any monitoring device are directly or indirectly connected with the lower branch single-phase circuit breaking device corresponding to the alarm or the public part reports an undervoltage alarm, the monitoring device corresponding to the upper three-phase circuit breaking device alarms according to the principle that the alarm is not reported, the alarm source at the moment is the single-phase circuit breaking device, when the upper and lower three-phase circuit breaking devices alarm the phase current load switching-off overrun or the three-phase unbalance switching-off overrun needs to be relieved of load, the monitoring device corresponding to the lower alarm three-phase circuit breaking device carries out priority processing according to the principle of first-down and last-up, the alarm source at the moment is the corresponding monitoring device, and the two conditions are represented by the corresponding three-phase circuit breaking devices;
in operation, the procedure of the dual-power eps switching device monitored by each level of monitoring device is that the computer monitoring device is reported first, then the switching-off load reduction is carried out on the corresponding terminal single-phase outage reporting device, the computer monitoring device sends a switching instruction to the dual-power switching device after switching-off feedback is carried out, and the computer monitoring device sends a switching measurement storage area instruction to the terminal single-phase outage reporting device after switching-over feedback is carried out successfully;
the single-phase alarm device is characterized by mainly comprising units such as a singlechip, a software program for monitoring and management, a clock, current pulse generation, current load metering, current on-off identification, over-under voltage identification, upper computer communication, lower computer communication, electric leakage identification, short circuit identification, electric leakage self-checking identification, main ammeter metering data storage, 20 metering data storage of auxiliary ammeters, indicator lamp different-frequency flicker indication alarm types, water meter acquisition and charging storage of two rate types, gas meter acquisition and charging storage of two rate types, a relay driver and a relay, a built-in or external display, a built-in or external singlechip power supply, a built-in or external IC card read-write card and the like, wherein the upper computer communication unit is connected with the lower computer communication unit of the central device, and the lower computer communication unit is connected with the upper computer communication unit of the detection device, before operation, firstly, computer filing and information setting are carried out on the opened function;
the single-phase outage device computer profiling page not only needs the corresponding filling content,
the symbols can be selected according to actual needs: the system mainly comprises a phase line type-AL/BL/CL, a use type-private/public, a user type-residential/commercial/other, an electric change preset threshold mode-automatic/manual, an applicable voltage-220V/110V, an electricity type-single phase/three phase, a water and electricity meter pulse constant-10/100/200/400/800/16003200, auxiliary meter information (who generates electricity and measures under the name of who) 01/02/03/04/05/06/07/08/09/10/11/12/13/14/15/16/17/18/19/20, a payment type-prepayment/post-payment; metering failure early warning and switching-off preset thresholds (hours) -00 (natural number), rate types-common/four steps/four time periods, wallet types-individual settlement of each meter/main and auxiliary electric meter mixed settlement/main and auxiliary water and gas meter mixed settlement/superior group main and auxiliary electric meter settlement/superior device group auxiliary electric meter settlement/superior group main and auxiliary electric meter mixed settlement/superior group main and auxiliary water and gas meter mixed settlement/superior group water meter settlement/superior group gas meter settlement and the like;
the software program of the single-phase failure reporting device adopts artificial intelligence technology to identify faults and carry out consumption settlement, and mainly comprises a current calculation, an overload early warning and a brake-off identification threshold which are preset in a single-chip microcomputer unit, a current fault self-excess flow such as delayed automatic reclosing after self-current overload brake-off and passive current overload brake-off of a single-phase failure reporting node device and the like, and an under-voltage release delayed closing flow, wherein current break, over under-voltage, electric leakage, short circuit, electric leakage self-checking failure, lower computer communication failure, various meter metering failure early warnings and metering failures, electric brake failures, various detection device alarms, manual button on-off, various meter metering abnormalities, main meter sum early warning and arrearage limit brake-off, auxiliary meter sum early warning and arrearage limit brake-off, main and auxiliary meter sum early warning and arrearage limit brake-off, water meter sum early warning and arrearage limit brake-off, electric meter sum early warning and arrearage limit brake-off, The method comprises the following steps of gas meter amount early warning and arrearage limit brake-off, main water and gas meter sum amount early warning and arrearage limit brake-off, double-power-supply conversion main power supply metering storage area, double-power-supply conversion 20 auxiliary power supply metering storage area, IC card electric maintenance brake-off countdown, user IC card brake-off, lower detection alarm device information uploading and issuing and other flows, current load and various consumption data and alarm information can be uploaded in real time, and a real-time current load calculation formula of a single-phase interruption device is as follows:
real-time current load-current load monitoring defines the number of pulses received in a period of time X1000 watts X60 minutes/pulse constant/voltage (V)
The over-under-voltage identification of the single-phase fault reporting device is divided into two grades, the over-under-voltage identification grade of the public single-phase fault reporting device is lower, the over-under-voltage switching protection function is not provided, the file is built according to the early warning, the over-under-voltage early warning is identified when the alarm is given, the over-under-voltage identification grade of the private single-phase fault reporting device is higher, the over-under-voltage switching protection function is provided, the file is built according to the switching, the switching is built according to the over-under-voltage and the current overload, the self-overdue switching is realized by self-defining the switching time and automatically delaying the switching on according to the file built by a computer;
the centralized monitoring device is characterized by mainly comprising a singlechip and a virtual power grid monitoring management software program, data storage, upper computer communication, lower computer communication, display, voice, a singlechip power supply, IC card reading and writing, and computer profiling and information setting on the opened function before operation;
the flow of the dual-power ups switching device monitored by the centralized monitoring device is that the switching is firstly carried out and then reported to the computer monitoring device, and then the computer monitoring device sends a command of switching a metering storage area to the terminal single-phase off-reporting device;
the centralized monitoring device presets single-phase and three-phase group artificial intelligent ic card settlement purses in a software program, and comprises group main electric meter settlement/group auxiliary electric meter settlement/group main and auxiliary electric meters hybrid settlement/group main and auxiliary water-gas meter hybrid settlement/various meter shared settlement and the like;
when the centralized monitoring device and the computer monitoring device are communicated to alarm in a failure mode, the centralized monitoring device automatically or manually informs the alarm devices in the group of countdown switching-off according to a preset switching-off rate, switching-off and switching-on time and sequence through the centralized monitoring device, the terminal single-phase alarm device is switched on according to the preset switching-on time after switching-off, and other single-phase alarm devices are continuously switched on and switched off to alarm release so as to realize fault self-excess;
when the three-phase open circuit node device phase current overload and three-phase unbalance or the phase current overload and three-phase unbalance brake pulling nominal amount that computer monitoring device gave down need the brake pulling of centralized monitoring device control, centralized monitoring device according to the single-phase outage device current load in the defence area from big to little direct distribution brake pulling nominal amount, according to self-defined time automatic closing behind the single-phase outage device brake pulling to realize that this kind of trouble is automatic when the computer is built a file and is selected the action type:
when the central monitoring device receives alarms, the central monitoring device reversely displays linkage alarm through the group display alarm device and pulls off the brake and the power of the group single-phase alarm device according to preset information after receiving alarms, namely one-door alarm, the group users alarm and power failure simultaneously respond, on the other hand, the central monitoring device uploads alarm information to a computer, 1-step computer monitoring device gives out alarm information according to preset information or other central monitoring devices, other central monitoring devices give out the alarm information to the display alarm device through the group single-phase alarm device, larger group alarm and power failure response are achieved, the central monitoring device comprises a fireproof door, an exhaust fan and a water spraying mechanism, if false alarm occurs, the main alarm is relieved, the alarm user swipes a card to recover the power, and when the display alarm device monitored by the lower single-phase alarm device connected with the central monitoring device is used for a fire-fighting water supply control switch After receiving the alarm, the centralized monitoring device uploads a computer, and the step-1 computer monitoring device sends a switching-on/off instruction to the centralized monitoring device to which the fire-fighting water pump belongs according to preset information and is specifically executed by a single-phase or three-phase alarm device connected with the fire-fighting water pumps in the group;
the computer monitoring device is mainly characterized by comprising corresponding step virtual power grid monitoring service management software, a monitored three-phase circuit breaking device, a power grid monitoring system and a control system, wherein the monitored three-phase circuit breaking device is composed of units such as lower-level to upper-level electric quantity calculation, display, acousto-optic various alarms, IC card reading and writing, centralized monitoring device filing and information setting and inquiry printing, single-phase circuit breaking device filing and information setting and inquiry printing, double-power conversion device filing and information setting and inquiry printing, detection alarm device filing and information setting and inquiry printing, three-phase circuit breaking device filing, three-phase circuit breaking device alarm and alarm warning, single-phase circuit breaking device alarm and alarm warning, an electric design principle diagram comparison verification table, a virtual power grid tree-shaped dynamic circuit diagram, various table settlement, property charging content and the like;
the three-phase circuit breaking device monitored by each step computer monitoring device is preset with a corresponding relation directly or indirectly connected with a lower branch single-phase circuit breaking device, and software programs such as an automatic or manual regulation can be selected through computer profiling on a current calculation and current overload design switching-off threshold, a current overload preset early warning threshold and parameters among the thresholds, a three-phase balance calculation and unbalance design switching-off threshold, an unbalance preset early warning threshold and parameters among the thresholds can be selected through computer profiling on the other software programs such as an automatic or manual regulation;
before operation, in order to ensure effective monitoring, a basic administrator needs to perform filing and information setting through a single-phase outage reporting device, a detection device, a centralized monitoring device, a three-phase circuit breaking device, a double-power supply conversion device and the like monitored by a step 1 computer monitoring device, a superior administrator needs to perform filing information copying and information setting through a lower step computer monitoring device monitored by the step computer monitoring device and file the three-phase circuit breaking device monitored by the step computer monitoring device, and each step computer monitoring device is provided with an inquiry printing page for the administrator to inquire;
in operation, when the real-time current load of the three-phase circuit breaking device phase monitored by any ladder computer monitoring device exceeds the switching threshold and the switching name is required to be distributed to the directly connected lower branch three-phase circuit breaking device, because each lower branch three-phase circuit breaking device may have current load difference and is fair to display, the average real-time current load of the lower branch three-phase circuit breaking device is calculated according to the total number of the corresponding lower branch single-phase circuit breaking devices which are preset by the computer monitoring device and are connected, and the switching name is distributed according to the sequence from large to small of the calculated average real-time current load until the current load is distributed to the total three-phase circuit breaking device monitored by the centralized monitoring device, the calculation formula of the average real-time current load of the three-phase circuit breaking device monitored by each ladder computer monitoring device and the total three-phase circuit breaking device monitored by the centralized monitoring device is shown as follows:
the total number of the branch single-phase off-reporting devices connected with the lower level is preset and corresponds to the construction of the computer monitoring device
In operation, in order to reduce the switching-out and switching-off range of the three-phase circuit breaking device caused by phase current overload and three-phase unbalance, the other three-phase circuit breaking devices except the three-phase circuit breaking device monitored by the centralized monitoring device on the power transmission line alarm the current load according to the preset indirect switching-out rate and average current ratio and calculate and distribute the indirect switching-out denominations from large to small until the total three-phase circuit breaking device monitored by the centralized monitoring device is calculated and distributed, and the calculation formula of the switching-out denominations distributed by the alarm lower three-phase circuit breaking device is as follows:
three-phase circuit breaking device alarm phase average real-time current load divided by all three-phase circuit breaking device alarm phase average real-time current load divided by three-phase circuit breaking device alarm phase pull-out number [ alarm three-phase circuit breaking device alarm phase computer build-up preset pull-out number-calculated result (0 when not calculated) ]
According to the above formula, five situations can occur as a result: if the calculated result is a decimal number, counting the rounded number, if the calculated residual number of the switching-off is less than 1, counting an integer, if the calculated residual number of the switching-off is more than 1, counting the rounded number, if the calculated residual number of the switching-off is equal to 1, directly distributing the calculated residual number of the switching-off to a three-phase circuit breaking device with the next current magnitude sequence, and if the calculated residual number of the switching-off is 1, completely distributing the residual number of the switching-off to the three-phase circuit breaking device;
when a lower step computer monitoring device and a data center service device are in communication failure alarm (related to the filing content of the upper step computer monitoring device connected with a computer), the lower step computer monitoring device automatically or manually informs a countdown pull-brake device to a group display alarm device through a centralized monitoring device according to a preset pull-brake rate, pull-brake time and sequence, a terminal single-phase break-brake device is switched on according to the preset switch-on time after being switched off, and other single-phase break-brake devices are continuously switched on and off for circulating to alarm release so as to avoid current overload of a three-phase break-brake device monitored by the upper step computer monitoring device possibly caused by communication failure;
the data center is characterized by mainly carrying out calculation of big data such as bidirectional communication between the computer monitoring device and the computer monitoring device, electric quantity of a three-phase circuit breaking device in a monitoring defense area of a superior computer monitoring device and the like and storage of various alarm information;
the dual-power conversion device is characterized by having two conversion modes of EPS and UPS and automatic or manual conversion capability of main and auxiliary power, and the manual conversion is preferential, and comprises conversion in the case of open circuit such as leakage, short circuit, overcurrent, phase failure and the like, and two conversion modes of EPS and UPS exist;
the non-contact IC card device is characterized in that one user has one card, and the group copy is single-charged, when charging, the user firstly inquires own consumption data, and simultaneously can complete the copy of water meters and alarm information of the main and auxiliary water meters of the group users, and each card can charge the own four meters of the user;
the detection device is characterized by mainly comprising a display alarm device and other detection devices, wherein the display alarm device mainly comprises a single chip microcomputer, a software program, a display screen, a help-seeking alarm button, a temperature and humidity detection upper computer communication unit, a lower computer passive multiple normally open/normally closed alarm communication interfaces, a DC power supply on-off relay, a driving circuit unit and the like, and other detections comprise smoke detection, pressure detection, light detection, liquid level detection, approach detection, vibration detection, infrared detection, magnetic detection, sound wave detection, gas detection, temperature detection, humidity detection, water meters, gas meters, other devices and the like;
-a three-phase circuit breaking device characterized by having more than one automatic or manual circuit breaking capability of electrical leakage, short circuit, fusing;
single-phase circuit breaking devices are characterized by the ability to open and close more than one of automatic or manual circuit breaking, short-circuiting and fusing.
The following is a description of the drawings:
since there are numerous open node devices and correspondingly configured monitoring devices from power generation to power utilization on a transmission line, fig. 1 is an electrical schematic diagram, which is a micro grid with 3 three-phase power inputs and is one of the configurations of the present invention, and the present invention is further described with reference to fig. 1 below:
in fig. 1, only the name and number of the device, the code of the phase line, etc. are shown, wherein PE represents the ground line, N represents the zero line, and other parameters are not labeled for reference.
Fig. 1 a three-phase electrical input 1 (direction of the sword head) is connected to a three-phase circuit breaker 31 via a power line; the phase AL of the outlet end of the three-phase circuit breaker 31 is connected with the inlet end AL of the three-phase circuit breakers 12 and 13 and 14, respectively, the phase BL is connected with the inlet end BL of the three-phase circuit breakers 12 and 13 and 14, respectively, and the phase CL is connected with the inlet end CL of the three-phase circuit breakers 12 and 13 and 14, respectively; the three-phase power input 2 (in the direction of the sword head) is connected with the wire inlet end of the three-phase circuit breaker 11 through a power transmission lead; the phase line isolation of the outlet ends of the three-phase circuit breaking devices 11 and 12 is respectively connected with the inlet end of the double-electric conversion device 1 through a transmission conductor; an AL phase outlet end of the double-electric conversion device 1 is connected with an inlet end of a single-phase alarm device 01-03, a BL phase outlet end is connected with an inlet end of a single-phase alarm device 04-06, and a CL phase outlet end is connected with an inlet end of a single-phase alarm device 07-08; an AL phase outlet end of the three-phase circuit breaking device 13 is respectively connected with inlet ends of the single-phase circuit breaking devices 09 and 10 through a transmission lead, a BL phase outlet end is directly connected with an inlet end of the single-phase circuit breaking device 11 through the transmission lead, and a CL phase outlet end is directly connected with an inlet end of the single-phase circuit breaking device 12 through the transmission lead; an AL phase outlet end of the three-phase circuit breaking device 14 is respectively connected with inlet ends of the single-phase circuit breaking devices 13 and 14 through a transmission lead, a BL phase outlet end is directly connected with an inlet end of the single-phase circuit breaking device 15 through a transmission lead, a CL phase outlet end is directly connected with an inlet end of the single-phase circuit breaking device 16 through a transmission lead, an outlet end of the single-phase circuit breaking device 01 is connected with the single-phase circuit breaking device, and an outlet end of the single-phase circuit breaking device is connected with a single-phase power output (in a sword head direction);
the data center service device is respectively in bidirectional communication connection with a 2-step computer monitoring device and a 1-step computer monitoring device 1 in the industries of water, gas, heat, elimination, security, earthquake emergency and the like; the step 1 computer monitoring device 1 is respectively in bidirectional communication connection with the upper computer communication interfaces of the centralized monitoring devices 1, 2 and 3; the lower computer communication interface of the centralized monitoring device 1 is respectively in bidirectional communication connection with the single- phase outage devices 01, 02, 03, 04, 05, 06, 07 and 08 and the upper computer communication interface of the dual-power conversion device 1; the lower computer communication interface of the centralized monitoring device 2 is in bidirectional communication connection with the upper computer communication interfaces of the single- phase outage devices 09, 10, 11 and 12 respectively; the lower computer communication interfaces of the centralized monitoring device 3 are respectively in bidirectional communication connection with the upper computer communication interfaces of the single-phase alarm devices 13, 14, 15 and 16; the lower computer communication interface of the single-phase alarm interrupting device 16 is in bidirectional communication connection with the upper computer communication interface of the detecting device.
Correspondence of the devices of fig. 1: the centralized monitoring device 1 correspondingly monitors information such as conversion information of the double-electric conversion device 1, various metering and circuit on-off and alarm information of the single-phase circuit breakers 01-08, current loads of the three-phase circuit breakers 11-12, three-phase balance and group metering; the centralized monitoring device 2 correspondingly monitors information such as various metering and circuit on-off and alarm information of the single-phase breaking devices 05-08, current load of the three-phase breaking device 13, three-phase balance and group metering and the like; the centralized monitoring device 3 correspondingly monitors various metering, on-off and alarm information of the single-phase breaking devices 13-16, current load of the three-phase breaking device 14, three-phase balance, group metering and other information; the step 1 computer monitoring device 1 correspondingly monitors information such as current load, three-phase balance, group metering and the like of the three-phase circuit breaker 31 and various information uploaded by the centralized monitoring device; the 2-step computer monitoring device in the industries of water, electricity, heat, fire protection, earthquake emergency and the like corresponds to various information uploaded by the monitored 1-step computer monitoring device.
Fig. 1 three-phase circuit interrupting device current load data sources: the AL phase data source of the three- phase circuit breaker 11 or 12 is the sum of 01-03 current loads of the single-phase circuit breaker, the BL phase data source is the sum of 04-06 current loads, and the CL phase data source is the sum of 07-08 current loads; the AL phase data source of the three-phase circuit breaking device 13 is the sum of 09-10 current loads of the single-phase circuit breaking device, the BL phase data source is 11 current loads, and the CL phase data source is the sum of 12 current loads; the AL phase data source of the three-phase circuit breaking device 14 is the sum of the current loads of the single-phase circuit breaking devices 13-14, the BL phase data source is a 15 current load, and the CL phase data source is a 16 current load; the AL phase data source of the three-phase circuit breaker 31 is the sum of the current loads of the single-phase circuit breakers 01-03, 09-10 and 13-14, the BL phase data source is the sum of the current loads of 04-06, 11 and 15, and the CL phase data source is the sum of the current loads of 07-08, 12 and 16.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
comparing the numbers and numbers in fig. 1, the 1-step computer monitoring device 1 is as follows:
description of the drawings: the computer operation process comprises the following steps: in the above table, except the item lines, the first action is a filling table line for filing by the filing staff, and the rest action information is stored in the storage lines, and the automatic and manual load reduction modes with the communication failure of the superior level are provided
An option for clicking on the top of the form after completion of filling in according to the requirements of the project
At this time, the contents of the table-filling line are copied to the following information storage lines and automatically sorted up and down according to the number sequence from small to large of the number of the 1-step computer monitoring device (which is prepared for the filing of the computer on the upper step), and if the number is required to be inserted, the computer mouse firstly clicks the upper part of the table
Then filling in the form filling line, and clicking above the form after filling
When deleting, the mouse table needs to be aligned with the saving line, the color of the line becomes dark after the content of the line to be deleted is clicked, and then the line is clicked
And (4) finishing. (the above documenting contents are assumed except the name and number of the icon)
Secondly, comparing the numbers and the quantity in fig. 1, the centralized monitoring device files the pages as follows:
description of the drawings: the computer operation process comprises the following steps: the first action is a filling-in action for filing-up personnel except the item action in the above form, and the other action information storage actions are used for clicking on the upper part of the form after the completion of the filling-in according to the requirement of the item
At this time, the contents of the table filling line are copied to the following information storage lines and automatically sorted up and down according to the number sequence of the centralized monitoring device from small to large, if the table filling line is inserted, a computer mouse firstly clicks the table above
Then filling in the form, clicking on the form after completion of filling
When deleting, the mouse table needs to be aligned with the saving line, the color of the line becomes dark after the content of the line to be deleted is clicked, and then the line is clicked
And (4) finishing. (the above documenting contents are assumed except the name and number of the icon)
Information setting page of centralized monitoring device
Description of the drawings: under the condition that the connection and communication between the 1-step computer monitoring device 1 and the centralized monitoring device 1 are effective, the page information is set by clicking a computer mouse
Then the numbers 1, 2 and 3 are arranged up and down, the page is 1, after the parameters are confirmed to be correct, the computer monitoring device and the centralized monitoring device are required to be in communication connection, and clicking is carried out
The filing information can be set in the centralized monitoring device later, including the related information corresponding to the following three-phase circuit breaking device data filing is imported, and the new centralized monitoring device number in the table is used for changing the number for use.
Claims (1)
1. A method for monitoring and managing entity electric network node device by virtual electric network is mainly composed of circuit breaking node including single-phase circuit breaking alarm device, three-phase circuit breaking device, dual-power supply conversion device and single-phase circuit breaking device, communication node including single-phase circuit breaking alarm device, dual-power supply conversion device, detection device including display, smoke sense, light sense, pressure, liquid level, approach, vibration, infrared, magnetic sense, sound wave, gas, temperature, humidity, water meter, gas meter and others, centralized virtual electric network monitoring device, data center service device, etc. the single-phase circuit breaking alarm device is used as information source of virtual electric network, therefore, the virtual power grid can utilize the artificial intelligence technology to enable all circuit breaking node devices of the entity power grid from power generation to the power utilization terminal to be in a tree-shaped data chain type internet of things and all communication node devices to be in a centralized type internet of things and mixed defense joint control through cloud computing by utilizing big data uploaded by a plurality of single-phase circuit breaking devices in real time;
the software for monitoring the three-phase circuit breaking device by each stage of monitoring device comprises a three-phase open circuit reporting leakage short circuit (open-phase open circuit reporting blowing) when the function configuration is leakage short circuit, a three-phase open circuit reporting leakage short circuit (open-phase open circuit reporting blowing) when the function configuration is leakage short circuit blowing, a three-phase open circuit reporting short circuit (open-phase open circuit reporting blowing) when the function configuration is short circuit blowing, a special equipment name is added before the function configuration when a superior has special equipment, when the superior has the special equipment, a computer is applied for presetting before terminal is pulled out to switch back, then the terminal is pulled out to switch back, when the group terminal has single-phase circuit breaking device, the leakage short circuit, the over-short voltage, the manual, the property, the fire fighting, the earthquake, the emergency and the like, when the group has the main ammeter of the single-phase node, the alarm is identified, and the alarm is self, The system comprises programs and processes such as settlement and sum early warning of 21 group meters, corresponding identification and alarm when a brake is pulled for owing fee limit, settlement and sum early warning of 6 group meters such as a main electric meter, an auxiliary electric meter, a main and auxiliary electric meter, a water meter, a gas meter and a main and auxiliary water-gas meter of a self three-phase node, public single-phase fault report devices of the self single-phase or three-phase node, sharing settlement of various meters corresponding to various types of shared settlement and private single-phase fault report devices, mixed defense linkage of various communication node devices and the like, wherein the 7x3 of the auxiliary electric meter, the water meter, the gas meter, the line loss meter, the main and auxiliary meter, the water meter, the gas meter and the main and auxiliary meter are subjected to corresponding identification and alarm when the brake is pulled for owing fee limit;
a data source: the data and alarm information uploaded by the single-phase breaking device are data sources of the centralized monitoring device, the data calculated by the subordinate branch three-phase breaking device of the three-phase breaking device monitored by the centralized monitoring device is a data source of the superior three-phase breaking device, the data calculated by the total three-phase breaking device is a data source of the 1-step computer monitoring device, the data calculated by the subordinate branch three-phase breaking device of the three-phase breaking device monitored by the 1-step computer monitoring device is a data source of the superior three-phase breaking device, the data calculated by the total three-phase breaking device is a data source of the 2-step computer monitoring device, and so on, the data calculated by the total three-phase breaking device of the inferior three-phase breaking device is a data source of the superior three-phase computer monitoring device;
when any monitoring device monitors 1 three-phase circuit breaking device, the device is a total three-phase circuit breaking device, and when any monitoring device monitors a plurality of upper and lower three-phase circuit breaking devices, the uppermost level is the total three-phase circuit breaking device;
during operation, when the three-phase circuit breaking device is directly connected with the lower branch single-phase interruption reporting device or directly connected with the lower branch three-phase circuit breaking device, the real-time current load is calculated according to a user-defined line loss rate preset by computer profiling, and the calculation formulas for identifying the real-time phase current load are respectively as follows:
when the three-phase circuit breaker is directly connected with the lower-level branch single-phase alarm breaking device
Real-time phase current load is equal to the sum of phase data corresponding to the directly connected subordinate branch single-phase interruption device and the sum of phase data corresponding to the directly connected subordinate branch single-phase interruption device, and X self-defined line loss rate
When the three-phase breaking device is directly connected with the lower-level branch three-phase breaking device
Real-time phase current load is defined as the sum of phase data corresponding to the directly connected lower-level branch three-phase circuit breaking device plus X self-defined line loss rate
In operation, when the three-phase circuit breaking device monitored by any monitoring device is overloaded and the switching-off is overrun by the alarm phase current or the unbalance switching-off is overrun and needs to be deloaded and adjusted, in order to reduce the power failure range of the three-phase circuit breaking device, the switching-off number and the self-defined switching-off rate of the subordinate branch single-phase circuit breaking device directly or indirectly connected with the corresponding phase are preset according to computer profiling to control the power failure range, and the calculation formula of the switching-off number of the subordinate branch single-phase circuit breaking device directly or indirectly connected with the subordinate branch single-phase circuit breaking device is as follows:
self-defined switching-off rate of preset phase switching-off quantity, namely total number X of directly or indirectly connected subordinate branch single-phase interruption devices
The three-phase balance degree calculation formula of the three-phase open circuit node device is as follows:
three-phase balance degree (maximum real-time current load-minimum real-time current load) ÷ maximum real-time current load
When the upper and lower three-phase circuit breaking devices monitored by any monitoring device are directly or indirectly connected with the lower branch single-phase circuit breaking device corresponding to the alarm or the public part reports an undervoltage alarm, the monitoring device corresponding to the upper three-phase circuit breaking device alarms according to the principle that the alarm is not reported, the alarm source at the moment is the single-phase circuit breaking device, when the upper and lower three-phase circuit breaking devices alarm the phase current load switching-off overrun or the three-phase unbalance switching-off overrun needs to be relieved of load, the monitoring device corresponding to the lower alarm three-phase circuit breaking device carries out priority processing according to the principle of first-down and last-up, the alarm source at the moment is the corresponding monitoring device, and the two conditions are represented by the corresponding three-phase circuit breaking devices;
in operation, the procedure of the dual-power eps switching device monitored by each level of monitoring device is that the computer monitoring device is reported first, then the switching-off load reduction is carried out on the corresponding terminal single-phase outage reporting device, the computer monitoring device sends a switching instruction to the dual-power switching device after switching-off feedback is carried out, and the computer monitoring device sends a switching measurement storage area instruction to the terminal single-phase outage reporting device after switching-over feedback is carried out successfully;
the single-phase alarm device is characterized by mainly comprising units such as a singlechip, a software program for monitoring and management, a clock, current pulse generation, current load metering, current on-off identification, over-under voltage identification, upper computer communication, lower computer communication, electric leakage identification, short circuit identification, electric leakage self-checking identification, main ammeter metering data storage, 20 metering data storage of auxiliary ammeters, indicator lamp different-frequency flicker indication alarm types, water meter acquisition and charging storage of two rate types, gas meter acquisition and charging storage of two rate types, a relay driver and a relay, a built-in or external display, a built-in or external singlechip power supply, a built-in or external IC card read-write card and the like, wherein the upper computer communication unit is connected with the lower computer communication unit of the central device, and the lower computer communication unit is connected with the upper computer communication unit of the detection device, before operation, firstly, computer filing and information setting are carried out on the opened function;
the single-phase outage device computer profiling page not only needs the corresponding filling content,
the symbols can be selected according to actual needs: the system mainly comprises a phase line type-AL/BL/CL, a use type-private/public, a user type-residential/commercial/other, an electric change preset threshold mode-automatic/manual, an applicable voltage-220V/110V, an electricity type-single phase/three phase, a water and electricity meter pulse constant-10/100/200/400/800/16003200, auxiliary meter information (who generates electricity and measures under the name of who) 01/02/03/04/05/06/07/08/09/10/11/12/13/14/15/16/17/18/19/20, a payment type-prepayment/post-payment; metering failure early warning and switching-off preset threshold (hour) -00 (natural number), rate type-common/four steps/four time periods, wallet type-individual meter settlement/main and auxiliary electric meter mixed settlement/main and auxiliary water-gas meter mixed settlement/superior group main electric meter settlement/superior device group auxiliary electric meter settlement/superior group main and auxiliary electric meter mixed settlementSettlement/upper group master and slave water and gas meter mixed settlement/upper group water meter settlement/upper group gas meter settlement and the like;
the software program of the single-phase failure reporting device adopts artificial intelligence technology to identify faults and carry out consumption settlement, and mainly comprises a current calculation, an overload early warning and a brake-off identification threshold which are preset in a single-chip microcomputer unit, a current fault self-excess flow such as delayed automatic reclosing after self-current overload brake-off and passive current overload brake-off of a single-phase failure reporting node device and the like, and an under-voltage release delayed closing flow, wherein current break, over under-voltage, electric leakage, short circuit, electric leakage self-checking failure, lower computer communication failure, various meter metering failure early warnings and metering failures, electric brake failures, various detection device alarms, manual button on-off, various meter metering abnormalities, main meter sum early warning and arrearage limit brake-off, auxiliary meter sum early warning and arrearage limit brake-off, main and auxiliary meter sum early warning and arrearage limit brake-off, water meter sum early warning and arrearage limit brake-off, electric meter sum early warning and arrearage limit brake-off, The method comprises the following steps of gas meter amount early warning and arrearage limit brake-off, main water and gas meter sum amount early warning and arrearage limit brake-off, double-power-supply conversion main power supply metering storage area, double-power-supply conversion 20 auxiliary power supply metering storage area, IC card electric maintenance brake-off countdown, user IC card brake-off, lower detection alarm device information uploading and issuing and other flows, current load and various consumption data and alarm information can be uploaded in real time, and a real-time current load calculation formula of a single-phase interruption device is as follows:
real-time current load-current load monitoring defines the number of pulses received in a period of time X1000 watts X60 minutes/pulse constant/voltage (V)
The over-under-voltage identification of the single-phase fault reporting device is divided into two grades, the over-under-voltage identification grade of the public single-phase fault reporting device is lower, the over-under-voltage switching protection function is not provided, the file is built according to the early warning, the over-under-voltage early warning is identified when the alarm is given, the over-under-voltage identification grade of the private single-phase fault reporting device is higher, the over-under-voltage switching protection function is provided, the file is built according to the switching, the switching is built according to the over-under-voltage and the current overload, the self-overdue switching is realized by self-defining the switching time and automatically delaying the switching on according to the file built by a computer;
the centralized monitoring device is characterized by mainly comprising a singlechip and a virtual power grid monitoring management software program, data storage, upper computer communication, lower computer communication, display, voice, a singlechip power supply, IC card reading and writing, and computer profiling and information setting on the opened function before operation;
the flow of the dual-power ups switching device monitored by the centralized monitoring device is that the switching is firstly carried out and then reported to the computer monitoring device, and then the computer monitoring device sends a command of switching a metering storage area to the terminal single-phase off-reporting device;
the centralized monitoring device presets single-phase and three-phase group artificial intelligent ic card settlement purses in a software program, and comprises group main electric meter settlement/group auxiliary electric meter settlement/group main and auxiliary electric meters hybrid settlement/group main and auxiliary water-gas meter hybrid settlement/various meter shared settlement and the like;
when the centralized monitoring device and the computer monitoring device are communicated to alarm in a failure mode, the centralized monitoring device automatically or manually informs the alarm devices in the group of countdown switching-off according to a preset switching-off rate, switching-off and switching-on time and sequence through the centralized monitoring device, the terminal single-phase alarm device is switched on according to the preset switching-on time after switching-off, and other single-phase alarm devices are continuously switched on and switched off to alarm release so as to realize fault self-excess;
when the three-phase open circuit node device phase current overload and three-phase unbalance or the phase current overload and three-phase unbalance brake pulling nominal amount that computer monitoring device gave down need the brake pulling of centralized monitoring device control, centralized monitoring device according to the single-phase outage device current load in the defence area from big to little direct distribution brake pulling nominal amount, according to self-defined time automatic closing behind the single-phase outage device brake pulling to realize that this kind of trouble is automatic when the computer is built a file and is selected the action type:
when the central monitoring device receives alarms, the central monitoring device reversely displays linkage alarm through the group display alarm device and pulls off the brake and the power of the group single-phase alarm device according to preset information after receiving alarms, namely one-door alarm, the group users alarm and power failure simultaneously respond, on the other hand, the central monitoring device uploads alarm information to a computer, 1-step computer monitoring device gives out alarm information according to preset information or other central monitoring devices, other central monitoring devices give out the alarm information to the display alarm device through the group single-phase alarm device, larger group alarm and power failure response are achieved, the central monitoring device comprises a fireproof door, an exhaust fan and a water spraying mechanism, if false alarm occurs, the main alarm is relieved, the alarm user swipes a card to recover the power, and when the display alarm device monitored by the lower single-phase alarm device connected with the central monitoring device is used for a fire-fighting water supply control switch After receiving the alarm, the centralized monitoring device uploads a computer, and the step-1 computer monitoring device sends a switching-on/off instruction to the centralized monitoring device to which the fire-fighting water pump belongs according to preset information and is specifically executed by a single-phase or three-phase alarm device connected with the fire-fighting water pumps in the group;
the computer monitoring device is mainly characterized by comprising corresponding step virtual power grid monitoring service management software, a monitored three-phase circuit breaking device, a power grid monitoring system and a control system, wherein the monitored three-phase circuit breaking device is composed of units such as lower-level to upper-level electric quantity calculation, display, acousto-optic various alarms, IC card reading and writing, centralized monitoring device filing and information setting and inquiry printing, single-phase circuit breaking device filing and information setting and inquiry printing, double-power conversion device filing and information setting and inquiry printing, detection alarm device filing and information setting and inquiry printing, three-phase circuit breaking device filing, three-phase circuit breaking device alarm and alarm warning, single-phase circuit breaking device alarm and alarm warning, an electric design principle diagram comparison verification table, a virtual power grid tree-shaped dynamic circuit diagram, various table settlement, property charging content and the like;
the three-phase circuit breaking device monitored by each step computer monitoring device is preset with a corresponding relation directly or indirectly connected with a lower branch single-phase circuit breaking device, and software programs such as an automatic or manual regulation can be selected through computer profiling on a current calculation and current overload design switching-off threshold, a current overload preset early warning threshold and parameters among the thresholds, a three-phase balance calculation and unbalance design switching-off threshold, an unbalance preset early warning threshold and parameters among the thresholds can be selected through computer profiling on the other software programs such as an automatic or manual regulation;
before operation, in order to ensure effective monitoring, a basic administrator needs to perform filing and information setting through a single-phase outage reporting device, a detection device, a centralized monitoring device, a three-phase circuit breaking device, a double-power supply conversion device and the like monitored by a step 1 computer monitoring device, a superior administrator needs to perform filing information copying and information setting through a lower step computer monitoring device monitored by the step computer monitoring device and file the three-phase circuit breaking device monitored by the step computer monitoring device, and each step computer monitoring device is provided with an inquiry printing page for the administrator to inquire;
in operation, when the real-time current load of the three-phase circuit breaking device phase monitored by any ladder computer monitoring device exceeds the switching threshold and the switching name is required to be distributed to the directly connected lower branch three-phase circuit breaking device, because each lower branch three-phase circuit breaking device may have current load difference and is fair to display, the average real-time current load of the lower branch three-phase circuit breaking device is calculated according to the total number of the corresponding lower branch single-phase circuit breaking devices which are preset by the computer monitoring device and are connected, and the switching name is distributed according to the sequence from large to small of the calculated average real-time current load until the current load is distributed to the total three-phase circuit breaking device monitored by the centralized monitoring device, the calculation formula of the average real-time current load of the three-phase circuit breaking device monitored by each ladder computer monitoring device and the total three-phase circuit breaking device monitored by the centralized monitoring device is shown as follows:
the total number of the branch single-phase off-reporting devices connected with the lower level is preset and corresponds to the construction of the computer monitoring device
In operation, in order to reduce the switching-out and switching-off range of the three-phase circuit breaking device caused by phase current overload and three-phase unbalance, the other three-phase circuit breaking devices except the three-phase circuit breaking device monitored by the centralized monitoring device on the power transmission line alarm the current load according to the preset indirect switching-out rate and average current ratio and calculate and distribute the indirect switching-out denominations from large to small until the total three-phase circuit breaking device monitored by the centralized monitoring device is calculated and distributed, and the calculation formula of the switching-out denominations distributed by the alarm lower three-phase circuit breaking device is as follows:
three-phase circuit breaking device alarm phase average real-time current load divided by all three-phase circuit breaking device alarm phase average real-time current load divided by three-phase circuit breaking device alarm phase pull-out number [ alarm three-phase circuit breaking device alarm phase computer build-up preset pull-out number-calculated result (0 when not calculated) ]
According to the above formula, five situations can occur as a result: if the calculated result is a decimal number, counting the rounded number, if the calculated residual number of the switching-off is less than 1, counting an integer, if the calculated residual number of the switching-off is more than 1, counting the rounded number, if the calculated residual number of the switching-off is equal to 1, directly distributing the calculated residual number of the switching-off to a three-phase circuit breaking device with the next current magnitude sequence, and if the calculated residual number of the switching-off is 1, completely distributing the residual number of the switching-off to the three-phase circuit breaking device;
when a lower step computer monitoring device and a data center service device are in communication failure alarm (related to the filing content of the upper step computer monitoring device connected with a computer), the lower step computer monitoring device automatically or manually informs a countdown pull-brake device to a group display alarm device through a centralized monitoring device according to a preset pull-brake rate, pull-brake time and sequence, a terminal single-phase break-brake device is switched on according to the preset switch-on time after being switched off, and other single-phase break-brake devices are continuously switched on and off for circulating to alarm release so as to avoid current overload of a three-phase break-brake device monitored by the upper step computer monitoring device possibly caused by communication failure;
the data center is characterized by mainly carrying out calculation of big data such as bidirectional communication between the computer monitoring device and the computer monitoring device, electric quantity of a three-phase circuit breaking device in a monitoring defense area of a superior computer monitoring device and the like and storage of various alarm information;
the dual-power conversion device is characterized by having two conversion modes of EPS and UPS and automatic or manual conversion capability of main and auxiliary power, and the manual conversion is preferential, and comprises conversion in the case of open circuit such as leakage, short circuit, overcurrent, phase failure and the like, and two conversion modes of EPS and UPS exist;
the non-contact IC card device is characterized in that one user has one card, and the group copy is single-charged, when charging, the user firstly inquires own consumption data, and simultaneously can complete the copy of water meters and alarm information of the main and auxiliary water meters of the group users, and each card can charge the own four meters of the user;
the detection device is characterized by mainly comprising a display alarm device and other detection devices, wherein the display alarm device mainly comprises a single chip microcomputer, a software program, a display screen, a help-seeking alarm button, a temperature and humidity detection upper computer communication unit, a lower computer passive multiple normally open/normally closed alarm communication interfaces, a DC power supply on-off relay, a driving circuit unit and the like, and other detections comprise smoke detection, pressure detection, light detection, liquid level detection, approach detection, vibration detection, infrared detection, magnetic detection, sound wave detection, gas detection, temperature detection, humidity detection, water meters, gas meters, other devices and the like;
-a three-phase circuit breaking device characterized by having more than one automatic or manual circuit breaking capability of electrical leakage, short circuit, fusing;
single-phase circuit breaking devices are characterized by the ability to open and close more than one of automatic or manual circuit breaking, short-circuiting and fusing.
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| WO2020083396A1 (en) * | 2018-10-25 | 2020-04-30 | 山东电工电气集团新能科技有限公司 | Commutation type automatic adjusting device for three-phase current imbalance |
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