CN109814500A - A kind of electric energy control method monitored based on low-voltage load with control integrated apparatus - Google Patents
A kind of electric energy control method monitored based on low-voltage load with control integrated apparatus Download PDFInfo
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- CN109814500A CN109814500A CN201811619000.4A CN201811619000A CN109814500A CN 109814500 A CN109814500 A CN 109814500A CN 201811619000 A CN201811619000 A CN 201811619000A CN 109814500 A CN109814500 A CN 109814500A
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a kind of electric energy control method monitored based on low-voltage load with control integrated apparatus, master controller receives voltage, electric current and island state by information collection port；Judgement receives the case where data, executes switching operation, reactive compensation, residual current protecting and the protection of anti-isolated island respectively, and master controller uploads running protection information to Intelligent power distribution terminal by dual mode communication.Comprehensive monitoring and Situation Awareness to the state of distribute-electricity transformer district are realized by relevant interface and the mutual cooperation of external action module, distribute-electricity transformer district distributed reactive power compensation and load is realized to automatically control, can effectively support distribution formula power supply and electric car largely access under distribute-electricity transformer district intelligence and site management.
Description
Technical field
The invention belongs to electric system Detection & Controling fields, and in particular to one kind is monitored based on low-voltage load and controls one
Body disguises the electric energy control method set.
Background technique
With the rapid development of society with the continuous improvement of the people's material and cultural life level, the demand to electric power is increasingly
Greatly, requirement of the power consumer to power supply reliability and power quality is also higher and higher, and power quality monitoring and improvement start to obtain
Pay attention to, and gradually has research and application.Intelligent distribution area utilizes power electronic technique, automatic control technology, digital signal
The new and high technologies such as processing technique mend distribution transformer monitoring, metering, power information acquisition, power quality monitoring, Reactive power control
Repay, the functions such as power quality adjusting/harmonic wave control, residual current protecting are organically fused together, be applied to low-voltage distribution system
In system, dynamic compensating power, harmonic carcellation distortion administer each phase voltage asymmetry, eliminate voltage fluctuation and flicker, thus
Improve power supply reliability and power quality.
But currently, there are the deficiencies of the following aspects for the distribute-electricity transformer district in State Grid Corporation of China's system: first is that due to lacking
Few secondary network, user's power supply load monitoring means, platform area situational awareness are insufficient；It can not branch supporting table area's intelligence pipe
Control.Second is that since active alarm early warning and site management function are insufficient, it can not be to customer power supply quality of voltage, power supply reliability
Etc. that can not manage, user can not be supported to take the initiative in offering a hand.Third is that since there are a large amount of space-times, phase sequence distribution are uneven single-phase negative in platform area
Lotus, three-phase load unbalance problem is generally existing, and part platform area outstanding problem causes platform area economic operation level low.Fourth is that by
Yu Taiqu reactive compensation is mainly taken to be compensated with device, and running environment is severe, and capacitor faults are high-incidence, and the reactive compensation of platform area is caused to have
Effect property is low, and platform area economic operation level is low.Fifth is that due to active power sources such as missing electric car, distributed generation resource, cold-storage and thermal storages
The control means of load, it is difficult to support source net lotus coordinated control and economical operation.Sixth is that the control hand of missing active power source load
Section, it is high that equipment crosses security risk again.Seventh is that three-level protective validity is difficult to ensure, electrical fire risk and personal safety risk
It is high.Eighth is that distributed generation resource anti-islanding validity is difficult to ensure, O&M maintenance safety risk is high.
In face of above situation, there is an urgent need to low-voltage load monitoring and control methods, change distribute-electricity transformer district status, realize distribution transforming
It is the automation in platform area, informationization, interactive and intelligent, reach the comprehensive monitoring and control to distribute-electricity transformer district source net lotus, solves
Certainly above-mentioned Eight main probl effectively supports the work such as distribute-electricity transformer district operation management.
Summary of the invention
To solve the above problems, this patent proposes a kind of electric energy control monitored based on low-voltage load with control integrated apparatus
Method processed.It realizes the comprehensive monitoring and Situation Awareness to the state of distribute-electricity transformer district, realizes the distributed idle benefit in distribute-electricity transformer district
Repay and automatically controlled with load, can effectively support distribution formula power supply and electric car largely access lower distribute-electricity transformer district intelligence with
Site management.
It is a kind of based on low-voltage load monitor with the electric energy control method that controls integrated apparatus, low-voltage load monitoring with
Control integrated apparatus include master controller, primary voltage current transformer, line voltage mutual inductor, outlet current transformer,
Residual current protecting operation module, reactive compensation module, low-voltage load commutation operation module, power module, super-capacitor module,
Dual mode communication module, RS-485 communication module and distributed generation resource anti-islanding module,
Wherein the control method includes:
(1) master controller receives primary voltage current transformer, line voltage mutual inductor, outlet current transformer and leads to respectively
The operating parameter and status information for crossing the power distribution station of 3 information collection input interfaces transmission receive the inspection of RS-485 communication module
The island state of the distributed generation resource of survey；
(2) master controller read the distribution transformer three-phase load unbalance degree evidence of power distribution station, power factor data,
Residual current data and island state；The case where master controller reads data according to judgement executes step (3)-(6)；
(3) if three-phase load unbalance degree is according to exceeding degree of unbalancedness threshold value, the commutation control module of master controller to
Low-voltage load switching operation module issues action command, executes according to the regulation commutation process that intelligent distribution transformer terminals (TTU) is issued
Commutation operation, realizes the equilibrium assignmen of power load phase sequence adjustment and platform area three-phase load；
(4) if power factor data is less than setting value, the idle control module of master controller is sent out to reactive compensation module
Action command carries out reactive compensation out；
(5) if residual current data exceed given threshold, the residual current monitoring and warning module of master controller is to residue
Current protection operation module issues action command and carries out residual current protecting；
(6) if island state has occurred in distributed generation resource, the distributed generation resource anti-islanding module of master controller assigns anti-orphan
Island instruction carries out anti-isolated island protection；
(7) low-voltage load is monitored by dual mode communication module and is uploaded to the running protection information of control integrated apparatus
Intelligent power distribution terminal.
Wherein master controller has 3 information collection input interfaces, 2 power supply supply input interfaces, 3 action controls defeated
Outgoing interface and 2 two-way communication interactive interfaces, primary voltage current transformer, line voltage mutual inductor, outlet current transformer
It is connected respectively by 3 information collection input interfaces with master controller information acquisition module, power module, super-capacitor module point
Not Tong Guo 2 power supplys supply input interfaces and connect with master controller, the residual current monitoring and warning module of master controller, without power control
Molding block and commutation control module pass through 3 action control output interfaces and residual current protecting operation module, idle benefit respectively
Repay module, low-voltage load commutation operation module is correspondingly connected with and carries out movement match control, dual mode communication module, RS-485 communication mould
Block passes through 2 two-way communication interactive interfaces respectively and connect progress information bidirectional interaction with master controller.
The power module monitors for low-voltage load and provides power supply supply with control integrated apparatus normal work；It is super
Capacitance module is to monitor to provide power supply supply under abnormal operating state with control integrated apparatus for low-voltage load, guarantees it
It is constantly in power supply state.
The control method of low-voltage load monitoring and control integrated apparatus, it is realized to the comprehensive of the state of distribute-electricity transformer district
Monitoring and Situation Awareness, realize distribute-electricity transformer district distributed reactive power compensation and load automatically controls, can effective support distribution formula
Power supply and electric car largely access under distribute-electricity transformer district intelligence and site management.
Detailed description of the invention
Fig. 1 is that low-voltage load monitors and controls integrated apparatus structure chart；
Fig. 2 is the control flow chart that low-voltage load monitors and controls integrated apparatus.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in datail description of the invention.Do not have for a person skilled in the art
The present invention can also be understood completely in the description of these detail sections.In order to avoid obscuring essence of the invention, well known method, mistake
There is no narrations in detail for journey, process, element and circuit.In addition, it should be understood by one skilled in the art that attached provided herein
Figure is provided to the purpose of explanation, and attached drawing is not necessarily drawn to scale.
Low-voltage load monitoring and the structure chart and control flow chart such as attached drawing 1 and attached drawing of control integrated apparatus of the invention
Shown in 2.
As shown in Figure 1, low-voltage load monitoring of the invention and control integrated apparatus are using modern communications, automatically control
Equipment, including master controller, primary voltage current transformer, line voltage are controlled with the advanced intelligent low-voltage load of switching technique
Mutual inductor, outlet current transformer, residual current protecting operation module, reactive compensation module, low-voltage load commutation operation module,
Power module, super-capacitor module, dual mode communication module, RS-485 communication module.Wherein: master controller is to be integrated with information to adopt
Collect module, commutation control module, idle control module, distributed generation resource anti-islanding module, residual current monitoring and warning module
The controller of integrated control functions, wherein master controller have 3 information collection input interfaces, 2 power supplys supply input interfaces,
3 action control output interfaces and 2 two-way communication interactive interfaces, wherein primary voltage current transformer, line voltage mutual inductance
Device, outlet current transformer pass through 3 information collection input interfaces respectively and are connected with master controller information acquisition module, power supply mould
Block, super-capacitor module pass through 2 power supply supply input interfaces respectively and connect with master controller, the residual current prison of master controller
It surveys warning module, idle control module and commutation control module and passes through 3 action control output interfaces and residual current guarantor respectively
Shield operation module, reactive compensation module, low-voltage load commutation operation module are correspondingly connected with and carry out movement match control, dual mode communication
Module, RS-485 communication module pass through 2 two-way communication interactive interfaces respectively and connect progress information bidirectional interaction with master controller.
Wherein primary voltage current transformer is the inlet wire measurement part of low-voltage load monitoring with control integrated apparatus, is born
Voltage, the current information of duty measurement inlet wire；Line voltage mutual inductor, outlet current transformer are low-voltage load monitoring and control one
The outlet measurement part that body makeup is set, is responsible for voltage, the current information of measurement outlet；Residual current protecting operation module is low pressure
The concrete operations executing agency of the residual current protecting function of load monitoring and control integrated apparatus, the residue with master controller
Current monitoring warning module has residual current protecting, error protection, again with the use of being equivalent to Intelligent residual current protector for power
The function of the Intelligent residual current protector for power such as combined floodgate, load control system；Reactive compensation module is low-voltage load monitoring and control one
The concrete operations executing agency for disguising the distributed reactive power compensation function of setting, is used cooperatively with the idle control module of master controller
Intelligent powerless compensation is carried out, has the function of auto-reactive compensation；Low-voltage load commutation operation module be low-voltage load monitoring with
Control integrated apparatus low-voltage load commutation concrete operations executing agency, with the commutation control module of master controller cooperate into
The automatic adjustment of row phase-change switch type three-phase load unbalance has phase-change switch type three-phase load unbalance self-checking device
Function, be responsible for the regulation commutation process issued according to intelligent distribution transformer terminals (TTU) and execute commutation operation, realization power load phase
Sequence adjustment, the equilibrium assignmen of platform area A, B, C three-phase load reach the mesh for improving power distribution station economic operation level and power supply quality
's.Dual mode communication module, that is, bandwidth carrier and wireless communication module are the uplinks of low-voltage load monitoring with control integrated apparatus
Communication module, the communication being responsible between low-voltage load monitoring and control integrated apparatus and intelligent distribution transformer terminals (TTU).RS-485
Communication module is the downlink communication module of low-voltage load monitoring with control integrated apparatus, is responsible for low-voltage load monitoring and control one
The communication between the power devices such as intelligent electric meter, electric car, distributed generation resource is set in body makeup.
Power module monitors for low-voltage load and provides power supply supply with control integrated apparatus normal work；Super capacitor mould
Block is to monitor to provide power supply confession under the abnormal operating states such as power failure or failure with control integrated apparatus for low-voltage load
It answers, guarantees that it is constantly in power supply state.
Low-voltage load monitoring and the control flow chart of control integrated apparatus as shown in Figure 2: firstly, master controller passes through
Information collection port receives voltage, electric current and island state；Secondly, the case where master controller judgement receives data, executes respectively
Switching operation, reactive compensation, residual current protecting and the protection of anti-isolated island, last master controller upload operation by dual mode communication and protect
Information is protected to Intelligent power distribution terminal；Specifically:
(1) master controller receives primary voltage current transformer, line voltage mutual inductor, outlet current transformer and leads to respectively
The operating parameter and status information for crossing the power distribution station of 3 information collection input interfaces transmission receive the inspection of RS-485 communication module
The island state of the distributed generation resource of survey；
(2) master controller read the distribution transformer three-phase load unbalance degree evidence of power distribution station, power factor data,
Residual current data and island state；The case where master controller reads data according to judgement executes step (3)-(6)；
(3) if three-phase load unbalance degree is according to exceeding degree of unbalancedness threshold value, the commutation control module of master controller to
Low-voltage load switching operation module issues action command, executes according to the regulation commutation process that intelligent distribution transformer terminals (TTU) is issued
Commutation operation, realizes the equilibrium assignmen of power load phase sequence adjustment and platform area three-phase load；
(4) if power factor data is less than setting value, the idle control module of master controller is sent out to reactive compensation module
Action command carries out reactive compensation out；
(5) if residual current data exceed given threshold, the residual current monitoring and warning module of master controller is to residue
Current protection operation module issues action command and carries out residual current protecting；
(6) if island state has occurred in distributed generation resource, the distributed generation resource anti-islanding module of master controller assigns anti-orphan
Island instruction carries out anti-isolated island protection；
(7) low-voltage load is monitored by dual mode communication module and is uploaded to the running protection information of control integrated apparatus
Intelligent power distribution terminal.
Low-voltage load monitoring with control integrated apparatus mainly has following functions: first is that can in the case of load according to low pressure
Access phase sequence of the variation adjust automatically customer charge of customer charge in secondary network A, B, C three-phase realizes that distribute-electricity transformer district is used
Family load three-phase equilibrium distribution, administers distribute-electricity transformer district three-phase load unbalance problem from source；Two are configured with shunt capacitance
Device makes entire platform area constitute distributed reactive power compensation mode, changes conventional low idle work centralized compensation mode, really implements to match
The area Bian Tai layering and zoning, local reactive power compensation；Distributed mode makes Reactive Power Device service efficiency also be increased dramatically；Third is that logical
It crosses RS485 to be communicated with intelligent electric meter, realizes the real-time acquisition to user data, can be locally stored and upload in real time；
Fourth is that having the functions such as the voltage and current monitoring of access point, overcurrent protection；It can locally analyze in real time, have a power failure to user and carry out
Report；Can have the functions such as Control of Electric Vehicles, distributed generation resource control according to user demand, the property of can choose simultaneously, be comprehensive
Solve the key equipment of distribute-electricity transformer district three-phase load unbalance, load control system, information monitoring.
Here the preferred embodiment of the present invention is only illustrated, but its meaning is not intended to limit the scope of the invention, applicability and is matched
It sets.On the contrary, detailed explanation of the embodiments can be implemented by those skilled in the art.It will be understood that without departing from appended power
In the case of the spirit and scope of the invention that sharp claim determines, changes and modifications may be made to details.
Claims (4)
1. a kind of electric energy control method monitored based on low-voltage load with control integrated apparatus, the low-voltage load monitoring and control
Integrated apparatus processed includes master controller, primary voltage current transformer, line voltage mutual inductor, outlet current transformer, remains
Aftercurrent protects operation module, reactive compensation module, low-voltage load commutation operation module, power module, super-capacitor module, double
Mould communication module, RS-485 communication module and distributed generation resource anti-islanding module, wherein the control method includes:
(1) master controller reception primary voltage current transformer, line voltage mutual inductor, outlet current transformer pass through 3 respectively
The operating parameter and status information of the power distribution station of a information collection input interface transmission, receive the detection of RS-485 communication module
The island state of distributed generation resource；
(2) master controller reads the distribution transformer three-phase load unbalance degree evidence of power distribution station, power factor data, residue
Current data and island state；The case where master controller reads data according to judgement executes step (3)-(6)；
(3) if three-phase load unbalance degree is according to exceeding degree of unbalancedness threshold value, the commutation control module of master controller is to low pressure
Load switching operation module issues action command, executes commutation according to the regulation commutation process that intelligent distribution transformer terminals (TTU) is issued
The equilibrium assignmen of power load phase sequence adjustment and platform area three-phase load is realized in operation；
(4) if power factor data is less than setting value, the idle control module of master controller issues dynamic to reactive compensation module
Make instruction and carries out reactive compensation；
(5) if residual current data exceed given threshold, the residual current monitoring and warning module of master controller is to residual current
It protects operation module to issue action command and carries out residual current protecting；
(6) if island state has occurred in distributed generation resource, the distributed generation resource anti-islanding module of master controller is assigned anti-islanding and is referred to
Order carries out anti-isolated island protection；
(7) low-voltage load is monitored by dual mode communication module and is uploaded to intelligence with the running protection information for controlling integrated apparatus
Distribution terminal.
2. a kind of electric energy control method monitored based on low-voltage load with control integrated apparatus as described in claim 1,
Be characterized in that: master controller has 3 information collection input interfaces, 2 power supply supply input interfaces, 3 action control outputs
Interface and 2 two-way communication interactive interfaces.
3. a kind of electric energy control method monitored based on low-voltage load with control integrated apparatus as claimed in claim 2,
Be characterized in that: primary voltage current transformer, line voltage mutual inductor, outlet current transformer pass through 3 information collections respectively
Input interface is connected with master controller information acquisition module, and it is defeated that power module, super-capacitor module pass through 2 power supply supplies respectively
Incoming interface is connect with master controller, and residual current monitoring and warning module, idle control module and the commutation of master controller control mould
Block passes through 3 action control output interfaces and residual current protecting operation module, reactive compensation module, low-voltage load commutation respectively
Operation module, which is correspondingly connected with, carries out movement match control, and dual mode communication module, RS-485 communication module pass through 2 two-ways respectively
Letter interactive interface is connect with master controller carries out information bidirectional interaction.
4. a kind of electric energy control method monitored based on low-voltage load with control integrated apparatus as described in claim 1,
Be characterized in that: the power module monitors for low-voltage load and provides power supply supply with control integrated apparatus normal work；It is super
Grade capacitance module is to monitor to provide power supply supply under abnormal operating state with control integrated apparatus for low-voltage load, is guaranteed
It is constantly in power supply state.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111209673A (en) * | 2020-01-08 | 2020-05-29 | 云南电网有限责任公司昆明供电局 | Design method of novel wide-width voltage-regulating distribution transformer |
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