CN105576660B - Local distribution network in-circuit emulation analytical equipment and system - Google Patents
Local distribution network in-circuit emulation analytical equipment and system Download PDFInfo
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- CN105576660B CN105576660B CN201610124593.1A CN201610124593A CN105576660B CN 105576660 B CN105576660 B CN 105576660B CN 201610124593 A CN201610124593 A CN 201610124593A CN 105576660 B CN105576660 B CN 105576660B
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- 238000007363 ring formation reaction Methods 0.000 claims abstract description 116
- 238000004364 calculation method Methods 0.000 claims abstract description 31
- 229910001037 White iron Inorganic materials 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 11
- 238000012795 verification Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000205 computational method Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 12
- 238000012549 training Methods 0.000 description 7
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- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 208000032368 Device malfunction Diseases 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a kind of local distribution network in-circuit emulation analytical equipment and systems, including：Main distribution modeling unit establishes main distribution Integrated Model according to main electric network data and distribution network data；Interconnection switch selecting unit selects the two cyclization circuits and interconnection switch of Loop Closing Operation in power distribution network；Topology formation unit forms the topological relation of cyclization interconnector according to cyclization circuit and interconnection switch；Parameter input unit inputs electrical network parameter；Cyclization point selecting unit, according to parameter selection cyclization point；Load flow calculation unit, according to the topological relation of cyclization interconnector, the cyclization that cyclization point is calculated in conjunction with flow data switchs the trend distribution of both sides；Alloy White Iron computing unit is distributed according to the trend and calculates cyclization dash current and steady-state current；Judge prompt unit, by cyclization dash current and steady-state current result of calculation compared with cyclization condition, the prompt message for whether carrying out Loop Closing Operation provided.That the invention enables the safeties in operation of power distribution network is good, reliability is high.
Description
Technical field
The present invention relates to system for distribution network of power field, more particularly to a kind of local distribution network in-circuit emulation analytical equipment and
System.
Background technology
With the constantly improve of modern power systems electric network composition, operation power mode increasingly increases, to further increase
Operation of power networks section reliability reduces network loss, improves the carrying load ability and utilization ratio of network, make mutually stronger for ability, working as
A large amount of looped network is established in preceding electric system, and distribution network is enable to meet the needs of the various methods of operation.
Both sides power supply is typically in split operation state when power distribution network carries out Loop Closing Operation, usually because cyclization point switchs both sides
The presence of busbar or line electricity pressure difference so that the circulation that is generated in Loop Closing Operation is excessive to cause over-current protection malfunction.
In order to ensure the uninterrupted power supply of responsible consumer, understands the situation of change of distribution trend, avoid unnecessary excessively negative
Lotus or contingency need pairing circular current to carry out detailed analysis and calculating, this contributes to operations staff to regional electric power
The method of operation of network carries out adjustment appropriate, to ensure user benefit, reduces loss of outage.
The widely used closed loop design of China's Urban Medium Voltage Distribution Network, the power supply mode of open loop operation there is dual power supply to supply
The electricity even structure of multiple feed, this improves the flexibility of power supply, also provides basic item to allow to execute Loop Closing Operation
Part.Therefore, when some busbar, switch, feeder line or related secondary change need maintenance, by Loop Closing Operation, by the mother
Load on line, switch or feeder line is transferred on other busbares or feeder line being attached thereto with not having a power failure, and can improve power supply can
By property.But in some cases, if executing Loop Closing Operation will produce larger Alloy White Iron, so as to lead to protective device malfunction
Or super equipment rated value, influence the safe and reliable operation of power distribution network.
Invention content
It is an object of the invention to overcome the above-mentioned deficiency in the presence of the prior art, a kind of power distribution network operational safety is provided
The local distribution network in-circuit emulation analytical equipment and system that property is good, reliability is high.
In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is：
A kind of local distribution network in-circuit emulation analytical equipment, including：
Main distribution modeling unit, for basis by main electric network data derived from EMS system, derived from PMS systems
Distribution network data establishes main distribution Integrated Model；The main distribution Integrated Model includes at least the network topology of main power grid
Relationship；
Interconnection switch selecting unit, two cyclization circuits and correspondence for selecting to need to carry out Loop Closing Operation in power distribution network
Interconnection switch；
Topology formation unit, for forming opening up for cyclization interconnector according to the cyclization circuit and interconnection switch of selection
Flutter relationship；
Parameter input unit, for inputting electrical network parameter, the parameter includes at least the phase for the interconnection switch for needing cyclization
Close interconnector, substation and a upper voltage class circuit；
Cyclization point selecting unit, for according to the parameter selection cyclization point；
Load flow calculation unit, for the topological relation according to the cyclization interconnector, in conjunction with the flow data of main power grid
Calculate the trend distribution of the cyclization switch both sides of the cyclization point；
Alloy White Iron computing unit, for according to the cyclization switch both sides trend distribution calculate cyclization dash current and
The size of steady-state current；
Judge prompt unit, for by the cyclization dash current and steady-state current result of calculation compared with cyclization condition,
The prompt message for whether carrying out Loop Closing Operation is provided according to comparison result.
Preferably, this area's power distribution network in-circuit emulation analytical equipment further includes：Data check unit, it is described for verifying
The accuracy of distribution network data derived from main electric network data derived from EMS system and the PMS systems.
The Alloy White Iron computing unit is specifically used for calculating cyclization steady-state current according to Newton-Raphson approach, is getting in touch with
The load switched on the circuit of both sides is added, and the node of interconnection switch both sides is considered as same node, and the topology of network changes correspondingly,
After Load flow calculation, the steady-state current after cyclization is acquired according to network cyclization voltage and branch impedance.
The judgement prompt unit by the cyclization dash current and steady-state current result of calculation compared with cyclization condition, root
The prompt for whether carrying out Loop Closing Operation is provided according to comparison result, specially：Verify the cyclization steady-state current being calculated and cyclization
Dash current provides the prompt without Loop Closing Operation if one of them is more than upper current limit threshold value.
Preferably, local distribution network in-circuit emulation analytical equipment further includes：Display unit, for showing the main power grid
Network topology, cyclization interconnector topological relation, whether carry out at least one of the prompt message of Loop Closing Operation.
Also a kind of local distribution network in-circuit emulation analysis system of the embodiment of the present invention, including：
Server, including above-mentioned local distribution network in-circuit emulation analytical equipment；
Distribution terminal, for sending solicited message to the server, the prompt message returned according to the server refers to
Lead the Loop Closing Operation whether operating personnel carry out power distribution network；The wherein described solicited message is related to the Loop Closing Operation of power distribution network.
Preferably, the server and the distribution terminal are realized at J2EE with B/S frameworks.
Preferably, the distribution terminal accesses the server by browser mode and sends the solicited message or acquisition
The prompt message.
Preferably, the server includes the first wireless transmit/receive units, and the distribution terminal includes corresponding second wireless
Transmit-Receive Unit.
Preferably, first wireless transmit/receive units and the second wireless transmit/receive units are GPRS communication units, 3G communication units
Member or 4G communication units.
Compared with prior art, beneficial effects of the present invention：
The present invention realizes main, distribution electric network data integrated modelling, changes the previous discrete side of main distribution computation model
Formula, calculates the size of cyclization dash current and steady-state current in conjunction with flow data and with network parameters, and by cyclization dash current and
The prompt message for whether carrying out Loop Closing Operation provided according to comparison result compared with cyclization condition for steady-state current result of calculation, from
And be protection circuit and equipment to greatest extent during cyclization, Alloy White Iron is reduced to the greatest extent, avoids power train
The malfunction that blanket insurance protects equipment provides guarantee so that the safety in operation of power distribution network is good, reliability is high.
Description of the drawings
Fig. 1 is the local distribution network in-circuit emulation analytical equipment schematic diagram in the embodiment of the present invention one；
Fig. 2 is that the transient shock current in the embodiment of the present invention calculates the first illustraton of model；
Fig. 3 is that the transient shock current in the embodiment of the present invention calculates the second illustraton of model；
Loop Closing Operation analytic process schematic diagram in Fig. 4 embodiment of the present invention；
Fig. 5 is the local distribution network in-circuit emulation analysis system schematic diagram in the embodiment of the present invention two.
Specific implementation mode
The present invention is described in further detail With reference to embodiment.But this should not be interpreted as to the present invention
The range of above-mentioned theme is only limitted to embodiment below, all models that the present invention is belonged to based on the technology that the content of present invention is realized
It encloses.
The embodiment of the present invention one provides a kind of local distribution network in-circuit emulation analytical equipment, referring to Fig. 1, including：
Main distribution modeling unit, for basis by main electric network data derived from EMS system, derived from PMS systems
Distribution network data establishes main distribution Integrated Model；The main distribution Integrated Model includes at least the network topology of main power grid
Relationship；
Interconnection switch selecting unit, two cyclization circuits and correspondence for selecting to need to carry out Loop Closing Operation in power distribution network
Interconnection switch；
Topology formation unit, for forming opening up for cyclization interconnector according to the cyclization circuit and interconnection switch of selection
Flutter relationship；
Parameter input unit, for inputting electrical network parameter, the parameter includes at least the phase for the interconnection switch for needing cyclization
Close interconnector, substation and a upper voltage class circuit；
Cyclization point selecting unit, for according to the parameter selection cyclization point；
Load flow calculation unit, for the topological relation according to the cyclization interconnector, in conjunction with the flow data of main power grid
Calculate the trend distribution of the cyclization switch both sides of the cyclization point；
Alloy White Iron computing unit, for according to the cyclization switch both sides trend distribution calculate cyclization dash current and
The size of steady-state current；
Judge prompt unit, for by the cyclization dash current and steady-state current result of calculation compared with cyclization condition,
The prompt message for whether carrying out Loop Closing Operation is provided according to comparison result.
The present invention realizes main, distribution electric network data integrated modelling, changes the previous discrete side of main distribution computation model
Formula, calculates the size of cyclization dash current and steady-state current in conjunction with flow data and with network parameters, and by cyclization dash current and
The prompt message for whether carrying out Loop Closing Operation provided according to comparison result compared with cyclization condition for steady-state current result of calculation, from
And be protection circuit and equipment to greatest extent during cyclization, Alloy White Iron is reduced to the greatest extent, avoids power train
The malfunction that blanket insurance protects equipment provides guarantee so that the safety in operation of power distribution network is good, reliability is high.
Specifically, the collection of distribution data source is imported based on PMS system datas by table in the present embodiment, topological diagram
The interactive modes such as editor realize the collection in calculation of distribution network model data source.Based on EMS system, by EMS major networks topology with
Distribution data carries out data splicing by overlapped data, realizes main, distribution electric network data integrated modelling, changes previous master and matches
The discrete mode of net computation model.Using major network EMS topologys, measurement and device parameter as data source, pass through computer graphics algorithm
It directly establishes on the basis of computation model, realizes the modeling of distribution computation model.
This area's power distribution network in-circuit emulation analytical equipment further includes：Data check unit is led for verifying the EMS system
The accuracy of distribution network data derived from the main electric network data gone out and the PMS systems.It is received in face of the huge data of distribution network
Error that may be present during collection, present invention research realize number by different computational methods, different data-entry-forms
According to cross check.By checking result of calculation and major network feed-in branch measurement voltage, electric current, further verification is matched
The accuracy of network data modeling.
The Alloy White Iron computing unit is specifically used for calculating cyclization steady-state current according to Newton-Raphson approach, is getting in touch with
The load switched on the circuit of both sides is added, and the node of interconnection switch both sides is considered as same node, and the topology of network changes correspondingly,
After Load flow calculation, the steady-state current after cyclization is acquired according to network cyclization voltage and branch impedance.
Load flow calculation is the basis of electric system various safety analyses and calculating, in order to improve Automation of Electric Systems operation
Accuracy and rapidity, and can system, safely carry out in-situ analysis, the information of distribution power flow variation is must can not
Few resource, therefore carry out the development trend that distribution power system load flow calculation is Load flow calculation now.The present invention is in the various tides of power distribution network
On the basis of flow calculation methodologies analysis is compared, in conjunction with two aspect condition of accuracy and convergence, it is proposed that circuit counting and newton
The inferior Three Phase Power Flow being combined of pressgang.The detailed mathematical mould of each element of power distribution network is established on the basis of this method
Type has carried out different nodes respectively in order to embody the authenticity of network structure comprehensively for the different mode of connection of transformer
Admittance matrix model foundation, the perfect foundation of model.
The judgement prompt unit by the cyclization dash current and steady-state current result of calculation compared with cyclization condition, root
The prompt for whether carrying out Loop Closing Operation is provided according to comparison result, specially：Verify the cyclization steady-state current being calculated and cyclization
Dash current provides the prompt without Loop Closing Operation if one of them is more than upper current limit threshold value.
Referring to Fig. 2 and Fig. 3, cyclization dash current is referred to through the electricity on breaker arranged side by side on main tapping in the present embodiment
Stream.During actual cyclization, dash current generally has higher amplitude, but duration is shorter, in engineering
During calculation, for the single-phase equivalent circuit of cyclization transient current as shown in figure 3, in distribution network, perceptual property is presented in circuit, by
During the entire process of the moment of cyclization completes to cyclization, the Alloy White Iron of system is decayed in a manner of concussion, in real time electricity
Stream is accordingly expressed in the form of the differential equation.During calculating, the A phases in computation model are driving voltage, are：
Δ U is cyclization point both sides voltage difference, i.e.,：△ U=U1-U2The non-odd times differential equation of circuit is
The initial phase angle of E when α is cyclization moment t=0, it is by the moment cyclization point two
What the phase angle difference of side voltage was determined.
The particular solution of equation is：
ip(t)=Asin (wt+ α)+Bcos (wt+ α)
A=REmax/R2+w2l2
B=-wLEmax/R2+w2l2
Solution is the sum of particular solution and general solution completely.
There is no electric current to pass through on moment inductance before cyclization, C1 can be found out, to there is the complete expression formula of dash current：
Generally use forward-backward sweep method or Newton-Raphson approach in the calculating process of cyclization steady-state current.It is pushed back preceding
For the Load flow calculation for being only available for radial net in the application process of method, application range has larger limitation.
Calculating the step of cyclization steady-state current calculates cyclization steady-state current with Newton-Raphson approach is, in interconnection switch
Load on the circuit of both sides is added, and the node of interconnection switch both sides is considered as same node, and the topology of network changes correspondingly, and is passing through
After Load flow calculation, the steady-state current after cyclization is acquired according to network cyclization voltage and branch impedance.
It is exactly to be become with the Suzhou electric company south of a city, stroked on the basis of Load flow calculation that cyclization analysis is carried out in power distribution network
Dawn becomes and the six inner distribution network closed loop circuits for becoming more than ten 10kV hung down is pilot study objects, and cyclization analysis is carried out to distribution
It calculates and cyclization condition criterion [cyclization voltage difference, differential seat angle etc.], the calculating of Alloy White Iron and result of calculation verification [passes through master
The distribution electricity that net feeder line SCADA measuring points electric current carries out verification or acquired with districts and cities carries out contrast verification analysis].Referring to figure
4, the implementation process of the function is：
A) interconnection switch is selected, according to actual needs, completes the selection of cyclization circuit and cyclization switch.
B) selection switched according to cyclization forms network topology, and judges the integrality and correctness of topology, shape
At the basic database of system.
C) input of relevant parameter, including the related interconnector of the interconnection switch of cyclization is needed, substation, a upper voltage
The relevant informations such as the circuit of grade.
D) Load flow calculation calculates cyclization switch two according to system-based information base information and the Power Flow Information acquired in real time
The trend of side is distributed.
E) the cyclization dash current during closing the ring and cyclization steady-state current are obtained based on Load flow calculation.
F) cyclization steady-state current and cyclization dash current are verified, if correlated current is out-of-limit, system provides termination order, not into
Row Loop Closing Operation.
In one embodiment, the local distribution network in-circuit emulation analytical equipment further includes：Display unit, for showing
Whether the network topology of the main power grid, the topological relation of cyclization interconnector carry out in the prompt message of Loop Closing Operation
It is at least one.It can be giveed training by display, support Training Management personnel to make quasi- topic by oneself that (such as distribution monitor is investigated extremely
Training, the training of distribution accident treatment, distribution operation training etc.), distribution operator on duty carries out analog simulation according to the selected topic in system
Study；Support roller animation play correlation material for training or system operatio material for training etc..The invention has the advantages that：
1, it on the basis of major network model, establishes and perfect regional distribution topological model and parameter.
2, it supports multi-modeling mode to be updated, edit, preserve to distribution network model, maintains easily management.
3, using major network Real-time Power Flow data as condition, in conjunction with distribution nameplate parameter, theory deduction goes out distribution node load etc.
Metric data.
4, realize that a variety of distribution tidal current computing methods derive main distribution modeling and correlation theory the verification of accuracy.
5, it realizes distribution network closed loop grid switching operation analogue simulation function, provides the decision condition of Loop Closing Operation success.
The present invention is that protection circuit and equipment, maximum reduction cyclization are electric to greatest extent during cyclization
Stream avoids the malfunction of protecting electrical power system equipment from providing guarantee so that the safety in operation of power distribution network is good, reliability is high.
Second embodiment of the present invention provides a kind of local distribution network in-circuit emulation analysis systems, including server and distribution end
End.The server includes the local distribution network in-circuit emulation analytical equipment in above-described embodiment one.The distribution terminal, is used for
Solicited message is sent to the server, the prompt message returned according to the server instructs whether operating personnel carry out distribution
The Loop Closing Operation of net；The wherein described solicited message is related to the Loop Closing Operation of power distribution network.
Specifically, referring to Fig. 5, the server and the distribution terminal are realized at J2EE with B/S frameworks.J2EE can be answered
For the exploitation and deployment of multilayer system, the framework of exploitation is enterprise-level.This system is under the frame of J2EE with B/S framves
What structure was realized, the framework of multilayer simplifies the operating process of system.The distribution terminal accesses the clothes by browser mode
The device transmission solicited message of being engaged in obtains the prompt message.The server includes the first wireless transmit/receive units, described to match
Electric terminals include corresponding second wireless transmit/receive units.First wireless transmit/receive units and the second wireless transmit/receive units are GPRS
Communication unit, 3G communication units or 4G communication units.Mode communicates server by radio communication with distribution terminal.Certainly also may be used
To be other communications.
Power distribution network is unique part being directly connected with user in electric system.The power supply of power distribution network is directly to the confession of circuit
Electric reliability impacts.Today of social high development, more stringent requirements are proposed to power supply quality by user.Research and development
The efficiency of management of power distribution network is particularly important.In distribution network the fortune that outage information is outage management is provided with high real-time
Row target.In this background, which can on a large scale apply in power supply enterprise, help to shorten power off time, improve
User satisfaction reduces power supply enterprise's cost, increases enterprise operation economic benefit.
Whether this system should be noted that the non-foundation of item according to cyclization basic theories, Loop Closing Operation, it is proposed that allow to execute conjunction
The decision scheme of ring operation, illustrates the reason of being unable to cyclization, discloses the excessive mechanism of electric current after cyclization, and provide reply and arrange
It applies, the realization of the system, it was demonstrated that the program can provide aid decision for the cyclization of electric system, and then it is reliable to improve power supply
Property.
The specific implementation mode of the present invention is described in detail above in conjunction with attached drawing, but the present invention is not restricted to
Embodiment is stated, in the spirit and scope for not departing from claims hereof, those skilled in the art can make
Go out various modifications or remodeling.
Claims (9)
1. a kind of local distribution network in-circuit emulation analytical equipment, which is characterized in that including：
Main distribution modeling unit, for according to by main electric network data derived from EMS system, passing through distribution derived from PMS systems
Network data establishes main distribution Integrated Model；The main distribution Integrated Model includes at least the network topology of main power grid；
Interconnection switch selecting unit, two cyclization circuits for selecting to need to carry out Loop Closing Operation in power distribution network and corresponding
Network switchs；
Topology formation unit, the topology for forming cyclization interconnector according to the cyclization circuit and interconnection switch of selection are closed
System；
Parameter input unit, for inputting electrical network parameter, the parameter includes at least the associated of the interconnection switch for needing cyclization
Winding thread road, substation and a upper voltage class circuit；
Cyclization point selecting unit, for according to the parameter selection cyclization point；
Load flow calculation unit is calculated for the topological relation according to the cyclization interconnector in conjunction with the flow data of main power grid
The trend distribution of the cyclization switch both sides of the cyclization point；
Alloy White Iron computing unit, the trend distribution for switching both sides according to the cyclization calculate cyclization dash current and stable state
The size of electric current；
Judge prompt unit, for by the cyclization dash current and steady-state current result of calculation compared with cyclization condition, according to
Comparison result provides the prompt message for whether carrying out Loop Closing Operation；
Data check unit is matched for verifying derived from main electric network data derived from the EMS system and the PMS systems
The accuracy of electric network data；Wherein, by different computational methods, different data-entry-forms realizes the intersection core of data
It is right, and by checking result of calculation and main power grid feed-in branch measurement voltage, electric current, verification power distribution network data modeling
Accuracy.
2. local distribution network in-circuit emulation analytical equipment according to claim 1, which is characterized in that the Alloy White Iron meter
Unit is calculated to be specifically used for calculating cyclization steady-state current, the load phase on the circuit of interconnection switch both sides according to Newton-Raphson approach
Adding, the node of interconnection switch both sides is considered as same node, and the topology of network changes correspondingly, after by Load flow calculation, according to
Network cyclization voltage and branch impedance acquire cyclization steady-state current.
3. local distribution network in-circuit emulation analytical equipment according to claim 1, which is characterized in that the judgement prompt is single
Whether the cyclization dash current and steady-state current result of calculation compared with cyclization condition, are provided according to comparison result and are carried out by member
The prompt of Loop Closing Operation, specially：
The cyclization steady-state current being calculated and cyclization dash current are verified, if one of them is more than upper current limit threshold value, is given
Go out the prompt without Loop Closing Operation.
4. local distribution network in-circuit emulation analytical equipment according to claim 1, which is characterized in that further include：
Display unit, for showing the network topology of the main power grid, the topological relation of cyclization interconnector, whether carrying out
At least one of prompt message of Loop Closing Operation.
5. a kind of local distribution network in-circuit emulation analysis system, which is characterized in that including：
Server, including claim 1-4 any one of them local distribution network in-circuit emulation analytical equipments；
Distribution terminal instructs behaviour for sending solicited message to the server according to the prompt message that the server returns
Make the Loop Closing Operation whether personnel carry out power distribution network；The wherein described solicited message is related to the Loop Closing Operation of power distribution network.
6. local distribution network in-circuit emulation analysis system according to claim 5, which is characterized in that the server and institute
It states distribution terminal and is realized with B/S frameworks at J2EE.
7. local distribution network in-circuit emulation analysis system according to claim 5 or 6, which is characterized in that the distribution is whole
End accesses the server by browser mode and sends the solicited message or the acquisition prompt message.
8. local distribution network in-circuit emulation analysis system according to claim 7, which is characterized in that the server includes
First wireless transmit/receive units, the distribution terminal include corresponding second wireless transmit/receive units.
9. local distribution network in-circuit emulation analysis system according to claim 8, which is characterized in that the described first wireless receipts
Bill member and the second wireless transmit/receive units are GPRS communication units, 3G communication units or 4G communication units.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610124593.1A CN105576660B (en) | 2016-03-04 | 2016-03-04 | Local distribution network in-circuit emulation analytical equipment and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610124593.1A CN105576660B (en) | 2016-03-04 | 2016-03-04 | Local distribution network in-circuit emulation analytical equipment and system |
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| CN105576660B true CN105576660B (en) | 2018-09-04 |
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| CN106655176B (en) * | 2017-01-17 | 2020-05-08 | 广东工业大学 | Power distribution network online loop closing decision method and system |
| CN106786609A (en) * | 2017-04-05 | 2017-05-31 | 国网山东省电力公司济南供电公司 | A kind of distribution line cyclization fast calibration method based on data fusion |
| CN106919064A (en) * | 2017-04-18 | 2017-07-04 | 国网上海市电力公司 | Collaborative simulation interface setting method |
| CN109359327B (en) * | 2018-09-01 | 2021-02-19 | 国网山东省电力公司寿光市供电公司 | Multi-purpose intelligent power distribution network simulation system and simulation method |
| CN110224406A (en) * | 2019-05-21 | 2019-09-10 | 国网河南省电力公司荥阳市供电公司 | For increasing the method and device of electric power responsible consumer electricity consumption reliability in two lines road |
| CN110672982B (en) * | 2019-11-14 | 2021-08-03 | 广东电网有限责任公司 | Detection method and system for preventing long-term loop closing operation of power distribution network and readable storage medium |
| CN110994610A (en) * | 2019-12-24 | 2020-04-10 | 国网天津市电力公司 | Monitoring information assistance-based loop closing method and device for power distribution network line |
| CN111444664B (en) * | 2020-02-26 | 2022-02-11 | 广东电网有限责任公司 | Power distribution network closed loop current calculation method and system containing multi-branch line |
| CN115983737B (en) * | 2023-02-17 | 2023-05-23 | 北京中恒博瑞数字电力科技有限公司 | Processing method and device for power grid data in electromagnetic closed loop and computer equipment |
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