CN108304613A - Closed loop network powered operation methods of risk assessment - Google Patents
Closed loop network powered operation methods of risk assessment Download PDFInfo
- Publication number
- CN108304613A CN108304613A CN201711437212.6A CN201711437212A CN108304613A CN 108304613 A CN108304613 A CN 108304613A CN 201711437212 A CN201711437212 A CN 201711437212A CN 108304613 A CN108304613 A CN 108304613A
- Authority
- CN
- China
- Prior art keywords
- cyclization
- value
- risk
- factor
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of closed loop network powered operation methods of risk assessment, including：Step 1：Analyze the type of cyclization mode；Step 2：The size and power factor of appropriate adjustment cyclization point both sides load；Step 3：Ensure that the rated load of one of both sides switch is not to be exceeded in the sum of cyclization both sides load；Step 4：The Line Flow after cyclization is calculated according to superposition theorem, calculates the phase difference and voltage of cyclization point both sides；Step 5：Cyclization dash current and cyclization steady-state current are calculated, security verification is carried out to all devices on loop using cyclization dash current and cyclization steady-state current, judging whether can be with cyclization.The implementation of the present invention can improve power supply reliability, it provides better service to the user, can not only reinforce the power supply reliability of distribution network, but also ensure that the power supply flexibility of distribution network, the economy of distribution network operation is improved, there is significant Social benefit and economic benefit.
Description
Technical field
The present invention relates to electric system risk analysis field, more particularly to a kind of closed loop network powered operation risk is commented
Estimate method.
Background technology
As society and expanding economy, requirement of the user to power supply reliability and power quality are also improving, dual power supply
Power supply and multiple feed have become the effective powering mode for improving distribution network reliability.In such a mode, power distribution network one
As use " closed loop design, open loop operation " power supply mode, in line maintenance or load switching, pass through Loop Closing Operation, selection
Supply path appropriate, reduces customer outage hours to the maximum extent, to ensure reliability and the flexibility of distribution network power supply,
The economy of distribution network operation is improved, the influence to user is reduced.Cyclization power supply is imperative！
But in Loop Closing Operation, because cyclization switch both sides voltage difference, phase angle difference, the operating parameter of distribution line complexity,
The major network method of operation adjusts the reasons such as unpredictability, and may make not having a power failure turns to generate excessive circulation in electrically operated intermediate ring road, draws
Distribution line over-current protection malfunction is played, and then leads to accident of power supply.The technology analysis means that dispatcher grasps are also extremely limited,
When not stalled electrically operated, previous experience can only be relied on to determine whether cyclization is carried out, in this way, being not only susceptible to judgement
Deviation does not have systematic theoretical calculation scheme and assessment to mark moreover, lacking the analysis of quantization to the Alloy White Iron being likely to occur
The result of standard, practical operation has prodigious randomness, and there is certain operational risks.Therefore to closed loop network in advance,
There is critically important theory value and practical significance with studying for key technologies such as the safe and stable problems of subsequent system in thing.
Invention content
In view of this, the object of the present invention is to provide a kind of closed loop network powered operation methods of risk assessment.For cyclization
Operation provides the theoretical calculation scheme and evaluation criteria of system, and previous experience can only be relied on to determine whether carrying out by avoiding
The drawbacks of cyclization, improves the reliability of power supply.
The purpose of the present invention is what is be achieved through the following technical solutions：
This kind of closed loop network powered operation methods of risk assessment, includes the following steps：
Step 1：The type of cyclization mode to be analyzed, is determined in the substation for participating in cyclization, the phase sequence of busbar is identical with phase,
Two substations of cyclization are participated in the comprehensive impedance difference no more than 5% of cyclization point；
Step 2：The size and power factor of appropriate adjustment cyclization point both sides load, make both sides difference no more than 5%, keep away
Exempt to cause to be unable to cyclization；
Step 3：Ensure that the rated load of one of both sides switch is not to be exceeded in the sum of cyclization both sides load；
Step 4：The Line Flow after cyclization is calculated according to superposition theorem, calculates the phase difference and voltage of cyclization point both sides
Difference, it is ensured that power flow changing will not cause relay protection to act when cyclization；
Step 5：Cyclization dash current and cyclization steady-state current are calculated, cyclization dash current and cyclization steady-state current pair are utilized
All devices carry out security verification on loop, and judging whether can be with cyclization.
Further, in the step 5, it is worth according to resistance in the initial phase angle of equivalence potential when cyclization and circuit and reactance ratio
To the maximum instantaneous value of cyclization dash current.
Further, in the step 5, the computational methods of cyclization steady-state current are：Cyclization process is established to equivalent calculating
Model, be processed into the independently operated mode of feeder line and looped network point both sides have auxiliary voltage effect as a result, open loop approach
Under load current be overlapped with circulation caused by the voltage differences of cyclization point both sides, obtain cyclization steady-state current.
Further, in the step 4, the complexity based on Load flow calculation carries out power distribution network network cyclization computation model
Simplify below：All substations for carrying out distribution network closed loop operation are powered by a 220kV substation；Do not consider that substation puts into
Capacitor to busbar voltage and idle influence；Ignore the distribution branch specific electric load and shunting function without Alloy White Iron, only
Substation's outlet is carried out to the route parameter calculation between interconnection switch；No-load voltage ratio value is carried out to different main transformers, makes main transformer
No-load voltage ratio is close consistent as possible, and provides operational taps when main transformer cyclization.
Further, in the step 4, the Line Flow after cyclization is formed by stacking by two parts：A part is cyclization front
The initial trend on road, another part switch balanced trend caused by the voltage vector difference of both sides by cyclization.
Further, further include step 6：Power distribution network risk is divided into three-level, i.e. I grade-material risk, II grade-relatively strong winds
Nearly, III grade-average risk, specific differentiation is as follows：
Value-at-risk >=1200 are I grade of risk；
1200 value-at-risk >=600 ﹥ are II grade of risk；
600 value-at-risk >=200 ﹥ are III grade of risk；
The value-at-risk of Loop Closing Operation is determined by " consequence value " and the product of " probability value "：
Value-at-risk=consequence value × probability value；
The consequence value is then obtained according to following calculation formula：
Consequence value=severity degree × social influence factor × load importance factors；
Further, the computational methods of severity degree：Calculating is divided to be used as basis point by every 1 megawatt of loss load 50
Value, the score value of severity degree are multiplied by coefficient of region with basic score value and obtain；
Load importance factors configure backup auto-activating device with reference to power supply quantity, whether, whether configure emergency power supply, use
Family is to factors such as susceptibility, the responsible consumer ranks of power failure from 1.6~4.0 values；
Social influence factor carries out social influence caused by after power failure susceptibility, power failure from 1.6~4.0 according to user
Value, the bigger factor value of social influence are bigger.
Further, the probability value that closed loop operation risk occurs is united by device type factor, fault category factor, historical data
Count factor, weather factor to affect, equipment deficiency factor to affect, overhaul management factor, repair time factor, site operation factor,
The product of control measure factor obtains.
The beneficial effects of the invention are as follows：
The implementation of the present invention can improve power supply reliability, provide better service to the user, can not only reinforce distribution
The power supply reliability of network, and ensure that the power supply flexibility of distribution network, the economy of distribution network operation is improved, is had
Significant Social benefit and economic benefit.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can be wanted by following specification and right
Book is sought to realize and obtain.
Description of the drawings
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, wherein：
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is cyclization point equivalent circuit；
Fig. 3 is the single-phase equivalent circuit diagram of dash current；
Fig. 4 is that distribution network closed loop concludes equivalent circuit diagram；
Specific implementation mode
Hereinafter reference will be made to the drawings, and the preferred embodiment of the present invention is described in detail.It should be appreciated that preferred embodiment
Only for illustrating the present invention, the protection domain being not intended to be limiting of the invention.
As shown in Figure 1, the closed loop network powered operation methods of risk assessment of the present invention, includes the following steps：
Step 1：The type of cyclization mode to be analyzed, is determined in the substation for participating in cyclization, the phase sequence of busbar is identical with phase,
Two substations for participating in cyclization differ to the comprehensive impedance of cyclization point no more than 10%, are to be no more than 5% in practical application
Preferably；
Step 2：The size and power factor of appropriate adjustment cyclization point both sides load, make both sides difference no more than 10%,
It avoids causing to be unable to cyclization, be advisable with being no more than 5% in practical application；
Step 3：Ensure that the rated load of one of both sides switch is not to be exceeded in the sum of cyclization both sides load；
Step 4：The Line Flow after cyclization is calculated according to superposition theorem, calculates the phase difference and voltage of cyclization point both sides
Difference, it is ensured that power flow changing will not cause relay protection to act when cyclization；
Step 5：Cyclization dash current and cyclization steady-state current are calculated, cyclization dash current and cyclization steady-state current pair are utilized
All devices carry out security verification on loop, and judging whether can be with cyclization.
Step 6：Power distribution network risk is divided into three-level, i.e. I grade-material risk, II grade-greater risk, III grade-general wind
Danger, specific differentiation are as follows：
Value-at-risk >=1200 are I grade of risk；
1200 value-at-risk >=600 ﹥ are II grade of risk；
600 value-at-risk >=200 ﹥ are III grade of risk；
The value-at-risk of Loop Closing Operation is determined by " consequence value " and the product of " probability value "：
Value-at-risk=consequence value × probability value；
Consequence value in above formula is then obtained according to following calculation formula：
Consequence value=severity degree × social influence factor × load importance factors；
The consequence value is then obtained according to following calculation formula：
Consequence value=severity degree × social influence factor × load importance factors；
The computational methods of severity degree：Calculating is divided to be used as benchmark score value, consequence tight by every 1 megawatt of loss load 50
The score value of weight degree is multiplied by coefficient of region with basic score value and obtains；
Load importance factors configure backup auto-activating device with reference to power supply quantity, whether, whether configure emergency power supply, use
Family is to factors such as susceptibility, the responsible consumer ranks of power failure from 1.6~4.0 values；
Social influence factor takes social influence caused by after power failure susceptibility, power failure from 1~5 according to user
Value, the bigger factor value of social influence are bigger.
Closed loop operation risk occur probability value by device type factor, fault category factor, historical data statistical factor,
Weather factor to affect, equipment deficiency factor to affect, overhaul management factor, repair time factor, site operation factor, control measure
The product of factor obtains.
The item that need to be illustrated for above-mentioned steps is as follows：In step 1, it is adopted in design and construction due to power distribution network
With connection of ring power network structures such as " handing in hand ", " N-1 " and " N for one standby ", and in the process of running by system short-circuit electric current etc. because
The mode of open loop operation is generally taken in the influence of element.It is the reliable power supply ensured to user in this case, it is reasonable except taking
Structure, maintain strict control over outside the measures such as hanging net operation equipment quality pass, still can encounter overhaul of the equipments or when load needs transfer, not stop
Electricity turns electricity and has become the important measures for reducing user's frequency of power cut raising power supply reliability.Substation is lower between busbar, feeder line
Cyclization be the current important means for reducing power distribution network frequency of power cut and power off time, the accurate type for analyzing cyclization mode, point
Analyse the key that trend is computed correctly when change of the cyclization to power network topology；In actual distribution network operational process, phase difference
Cyclization, that is, no problem within 5 degree, but due to the difference of system structure, some closing the ring phase differences allow 10 degree to 15 degree,
Voltage difference allows within 10%.Involutive ring circulation generally requires calculating before cyclization, permits when determining cyclization according to result of calculation
Perhaps phase difference and voltage difference.When carrying out Loop Closing Operation, if phase difference and voltage difference, which are not met, allows requirement, it must be adjusted.
In step 4, the complexity based on Load flow calculation carries out following simplify to power distribution network network cyclization computation model：
All substations for carrying out distribution network closed loop operation are powered by a 220kV substation；The capacitor of substation's input is not considered
To busbar voltage and idle influence；Ignore the distribution branch specific electric load and shunting function without Alloy White Iron, only carries out power transformation
Outlet stand to the route parameter calculation between interconnection switch；No-load voltage ratio value is carried out to different main transformers, makes the no-load voltage ratio of main transformer as possible
It is close consistent, and provide operational taps when main transformer cyclization.
It, can be in cyclization since the matching of the electrical equipments parameter such as transformer, circuit is unreasonable in power grid actual moving process
Power circulation is generated in the looped network of formation, and superposition theorem can be used and analyze this circulating power.Line Flow after cyclization is by two
Partial stack forms：A part is the initial trend of circuit before cyclization, and another part is drawn by cyclization switch both sides voltage vector difference
The balanced trend risen, as shown in Fig. 2, when the preceding both sides Line Flow of cyclization is zero, the trend between node i, j is pure
Balanced trend.
In step 5, the instantaneous value for the immediate current maximum possible that looped network point switch is closed is known as cyclization dash current, impacts
The usual amplitude of electric current is higher and the duration is shorter, as shown in figure 3, A phase driving voltages
The non-homogeneous differential equation of circuit is：
The complete expression formula of Alloy White Iron is
From above formula it is found that Alloy White Iron is made of periodic component and the superposition of aperiodic component two parts.When known, cyclization
The amplitude of current cycle component becomes with circuit parameter variations, and exponentially the direct current of rule monotonic decay is aperiodic component.
When the moment aperiodic component that looped network point switch is closed is just zero, i.e., the moment that looped network point switch is closed is in zero dash current
In the case of immediately enter stable state；Pass through the maximum instantaneous value of cyclization dash current and the initial value of aperiodic component and its decaying
The inner link of the initial phase angle of equivalence electromotive force, can push away when the relationship of speed and the initial value of aperiodic component and cyclization
Break dash current the rate of decay it is then related with resistance in circuit and reactance ratio.Therefore, the maximum wink of cyclization dash current
Duration is codetermined by resistance in the initial phase angle of equivalence potential when cyclization and circuit and reactance ratio.
Distribution network closed loop is turned the various modes of electricity and concludes equivalence by Line Flow when in order to analyze distribution network closed loop turn electricity Loop Closing Operation
Circuit is as shown in Figure 4.
Known following parameter：
The relevant parameter in the sides A：Main transformer equivalent impedance XT1(can be provided by area power grid relay protection setting scheme), busbar electricity
PressureThe first, second and third section of 10kV feed line impedance in the stations A is respectively XL11、RL11、Xl12、RL12、XL13、RL1310kV feed line impedances；Line
Road initial current I10, power factor (PF)The relevant parameter in the sides B：Main transformer equivalent impedance XT2, busbar voltageThe stations B first,
Two, three sections of 10kV feed line impedances are respectively XL21、RL21、XL22、RL22、XL23、RL23, circuit initial current I20A, power factor (PF)
From above-mentioned parameter：
1 initial current of feeder line：
2 initial current of feeder line：
According to circuit theory：
Circulation caused by the voltage differences of cyclization both sides：
The electric current of 1 outlet switch of feeder line is flowed through after cyclization：
The electric current of 2 outlet switch of feeder line is flowed through after cyclization：
In step 5, the computational methods of cyclization steady-state current are：Cyclization process is established to equivalent computation model, is located
Manage into the independently operated mode of feeder line and looped network point both sides have auxiliary voltage effect as a result, load current under open loop approach
It is overlapped with circulation caused by the voltage differences of cyclization point both sides, obtains cyclization steady-state current.
According to electric power system dispatching regulation, the power grid of partition running generally has following operation rules in cyclization：
(1) clearly know that it is to belong to same system, and trend is substantially grasped after involutive ring to close solution loop system；
(2) Network status for understanding upper level should obtain related when especially relating to the network of upper level scheduling administration
The agreement of scheduling；
(3) voltage condition for understanding two side systems, considers the phase difference and voltage difference of cyclization point both sides, when ensureing cyclization
Power flow changing will not cause relay protection to act；
(4) system of grounding through arc is considered as the correct operation of the arc suppression coil after conjunction is unlinked；
(5) switch should be used to carry out conjunction Open Loop Operation.
In Loop Closing Operation, it is considered as the variation of trend when cyclization.When such as estimating trend compared with that overcurrent may well be caused to act,
Following measures can be taken：
(1) will likely protection deactivate；
(2) splitting point is set in the switch of predetermined off-the-line, and person on duty is notified to pay attention to power flow changing and protection act feelings
Condition；
(3) the two low-pressure side bus voltage differences for participating in cyclization are adjusted to minimum, and pressure difference most very much not surpasses when normal occlusion Open Loop Operation
Cross 10%；
(4) if pressure difference is larger, when estimation circulation is larger, it also can reduce circulation with change systematic parameter or use simultaneously
A), b) item method avoids the situation that heavy burden side voltage is more higher than light lotus side as far as possible；
(5) more complicated two systems close Open Loop Operation, and without operating experience when, preferably first pass through Load flow calculation.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Right in.
Claims (8)
1. closed loop network powered operation methods of risk assessment, it is characterised in that：Include the following steps：
Step 1：The type of cyclization mode is analyzed, is determined in the substation for participating in cyclization, the phase sequence of busbar is identical with phase, participates in
Comprehensive impedance difference no more than 10% of two substations of cyclization to cyclization point；
Step 2：The size and power factor of appropriate adjustment cyclization point both sides load, make both sides difference no more than 10%, avoid
It causes to be unable to cyclization；
Step 3：Ensure that the rated load of one of both sides switch is not to be exceeded in the sum of cyclization both sides load；
Step 4：The Line Flow after cyclization is calculated according to superposition theorem, calculates the phase difference and voltage difference of cyclization point both sides, really
Power flow changing will not cause relay protection to act when protecting cyclization；
Step 5：Cyclization dash current and cyclization steady-state current are calculated, using cyclization dash current and cyclization steady-state current to loop
Upper all devices carry out security verification, and judging whether can be with cyclization.
2. closed loop network powered operation methods of risk assessment according to claim 1, it is characterised in that：The step 5
In, the maximum instantaneous of cyclization dash current is worth to according to resistance in the initial phase angle of equivalence potential when cyclization and circuit and reactance ratio
Value.
3. closed loop network powered operation methods of risk assessment according to claim 1, it is characterised in that：The step 5
In, the computational methods of cyclization steady-state current are：Cyclization process is established to equivalent computation model, feeder line is processed into and independently transports
Capable mode and looped network point both sides have auxiliary voltage effect as a result, load current and cyclization point both sides under open loop approach are electric
Circulation is overlapped caused by pressure difference is different, obtains cyclization steady-state current.
4. closed loop network powered operation methods of risk assessment according to claim 1, it is characterised in that：The step 4
In, the complexity based on Load flow calculation carries out following simplify to power distribution network network cyclization computation model：All carry out distribution network closed loops
The substation of operation is powered by a 220kV substation；Do not consider the capacitor of substation's input to busbar voltage and idle
Influence；Ignore the distribution branch specific electric load and shunting function without Alloy White Iron, only carries out substation's outlet to interconnection switch
Between route parameter calculation；No-load voltage ratio value is carried out to different main transformers, keeps the no-load voltage ratio of main transformer close consistent as possible, and provide to lead
Become operational taps when cyclization.
5. closed loop network powered operation methods of risk assessment according to claim 1, it is characterised in that：The step 4
In, the Line Flow after cyclization is formed by stacking by two parts：A part is the initial trend of circuit before cyclization, and another part is by closing
Ring switchs balanced trend caused by the voltage vector difference of both sides.
6. closed loop network powered operation methods of risk assessment according to claim 1, it is characterised in that：It further include step
6：Power distribution network risk is divided into three-level, i.e. I grade-material risk, II grade-greater risk, III grade-average risk is specific to differentiate
It is as follows：
Value-at-risk >=1200 are I grade of risk；
1200 value-at-risk >=600 ﹥ are II grade of risk；
600 value-at-risk >=200 ﹥ are III grade of risk；
The value-at-risk of Loop Closing Operation is determined by " consequence value " and the product of " probability value "：
Value-at-risk=consequence value × probability value.
7. closed loop network powered operation methods of risk assessment according to claim 6, it is characterised in that：The consequence value
Then obtained according to following calculation formula：
Consequence value=severity degree × social influence factor × load importance factors；
The computational methods of severity degree：Calculating is divided to be used as benchmark score value, the serious journey of consequence by every 1 megawatt of loss load 50
The score value of degree is multiplied by coefficient of region with basic score value and obtains；
Load importance factors configure backup auto-activating device with reference to power supply quantity, whether, whether configure emergency power supply, user couple
The factors such as susceptibility, the responsible consumer rank of power failure are from 1.6~4.0 values；
Social influence factor carries out value, society for social influence caused by after power failure susceptibility, power failure according to user from 1~5
It is bigger to influence the bigger factor value.
8. closed loop network powered operation methods of risk assessment according to claim 6, it is characterised in that：Loop Closing Operation wind
The probability value nearly occurred is by device type factor, fault category factor, historical data statistical factor, weather factor to affect, equipment
The product acquisition of defective effect factor, overhaul management factor, repair time factor, site operation factor, control measure factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711437212.6A CN108304613A (en) | 2017-12-26 | 2017-12-26 | Closed loop network powered operation methods of risk assessment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711437212.6A CN108304613A (en) | 2017-12-26 | 2017-12-26 | Closed loop network powered operation methods of risk assessment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108304613A true CN108304613A (en) | 2018-07-20 |
Family
ID=62867439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711437212.6A Pending CN108304613A (en) | 2017-12-26 | 2017-12-26 | Closed loop network powered operation methods of risk assessment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108304613A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193920A (en) * | 2018-09-26 | 2019-01-11 | 云南电网有限责任公司电力科学研究院 | A kind of cyclization tune electric control system and method based on controllable inductor |
| CN109217467A (en) * | 2018-08-28 | 2019-01-15 | 云南电网有限责任公司电力科学研究院 | A kind of quickly solution cyclization method and apparatus |
| CN110299709A (en) * | 2019-07-31 | 2019-10-01 | 云南电网有限责任公司瑞丽供电局 | A kind of flexible cyclization tune method for electrically and device of protection control unified collocation |
| CN110994623A (en) * | 2019-12-26 | 2020-04-10 | 深圳供电局有限公司 | 10kV superconducting loop closing operation method |
| CN111489099A (en) * | 2020-04-23 | 2020-08-04 | 国网江西省电力有限公司电力科学研究院 | On-site operation risk assessment method for short-circuit resistance of transformer |
| CN111697571A (en) * | 2020-05-26 | 2020-09-22 | 云南电网有限责任公司玉溪供电局 | Closed loop current calculation method during closed loop operation of power distribution network |
| CN111725835A (en) * | 2020-05-01 | 2020-09-29 | 上海交通大学 | Method for restraining loop closing operation impact current of power distribution network containing distributed power supply |
| CN111756048A (en) * | 2020-07-27 | 2020-10-09 | 南京能迪电气技术有限公司 | Power distribution network closed loop load transfer method |
| CN112232696A (en) * | 2020-10-29 | 2021-01-15 | 广东电网有限责任公司 | Management and control method and management and control device for distribution network loop closing operation risk |
| CN112491048A (en) * | 2020-11-25 | 2021-03-12 | 国网湖北省电力有限公司咸宁供电公司 | Closed loop current calculation method, closed loop current calculation device, closed loop current calculation equipment and storage medium |
| CN114301099A (en) * | 2022-01-04 | 2022-04-08 | 南京大全电气研究院有限公司 | Bus switching method and device, electronic equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860026A (en) * | 2010-05-28 | 2010-10-13 | 北京中恒博瑞数字电力科技有限公司 | Analysis method of electromagnetic loop closing and power reversing operation of urban distribution network |
| CN104466945A (en) * | 2014-09-22 | 2015-03-25 | 珠海许继芝电网自动化有限公司 | Method for analyzing loop closing risks based on interconnection switch in power distribution network |
| CN106655168A (en) * | 2016-12-09 | 2017-05-10 | 国网北京市电力公司 | Method and device for building loop closing model of power distribution network |
| CN107038653A (en) * | 2017-04-17 | 2017-08-11 | 国网青海省电力公司 | Cyclization powered operation methods of risk assessment and device |
-
2017
- 2017-12-26 CN CN201711437212.6A patent/CN108304613A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860026A (en) * | 2010-05-28 | 2010-10-13 | 北京中恒博瑞数字电力科技有限公司 | Analysis method of electromagnetic loop closing and power reversing operation of urban distribution network |
| CN104466945A (en) * | 2014-09-22 | 2015-03-25 | 珠海许继芝电网自动化有限公司 | Method for analyzing loop closing risks based on interconnection switch in power distribution network |
| CN106655168A (en) * | 2016-12-09 | 2017-05-10 | 国网北京市电力公司 | Method and device for building loop closing model of power distribution network |
| CN107038653A (en) * | 2017-04-17 | 2017-08-11 | 国网青海省电力公司 | Cyclization powered operation methods of risk assessment and device |
Non-Patent Citations (4)
| Title |
|---|
| 唐鹤: "10kV配电网合环转电风险评估方法研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 王世祯: "《电网调度运行技术》", 31 July 1997 * |
| 王双 等: "电网合环操作风险评估系统的研究与开发", 《华北电力技术》 * |
| 陈曦 等: "一种应用于配电网合环操作的计算模型与方法", 《四川电力技术》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217467A (en) * | 2018-08-28 | 2019-01-15 | 云南电网有限责任公司电力科学研究院 | A kind of quickly solution cyclization method and apparatus |
| CN109193920A (en) * | 2018-09-26 | 2019-01-11 | 云南电网有限责任公司电力科学研究院 | A kind of cyclization tune electric control system and method based on controllable inductor |
| CN110299709A (en) * | 2019-07-31 | 2019-10-01 | 云南电网有限责任公司瑞丽供电局 | A kind of flexible cyclization tune method for electrically and device of protection control unified collocation |
| CN110994623A (en) * | 2019-12-26 | 2020-04-10 | 深圳供电局有限公司 | 10kV superconducting loop closing operation method |
| CN111489099A (en) * | 2020-04-23 | 2020-08-04 | 国网江西省电力有限公司电力科学研究院 | On-site operation risk assessment method for short-circuit resistance of transformer |
| CN111725835A (en) * | 2020-05-01 | 2020-09-29 | 上海交通大学 | Method for restraining loop closing operation impact current of power distribution network containing distributed power supply |
| CN111697571A (en) * | 2020-05-26 | 2020-09-22 | 云南电网有限责任公司玉溪供电局 | Closed loop current calculation method during closed loop operation of power distribution network |
| CN111756048A (en) * | 2020-07-27 | 2020-10-09 | 南京能迪电气技术有限公司 | Power distribution network closed loop load transfer method |
| CN111756048B (en) * | 2020-07-27 | 2023-09-29 | 南京能迪电气技术有限公司 | Power distribution network loop closing load transfer method |
| CN112232696A (en) * | 2020-10-29 | 2021-01-15 | 广东电网有限责任公司 | Management and control method and management and control device for distribution network loop closing operation risk |
| CN112232696B (en) * | 2020-10-29 | 2023-05-16 | 广东电网有限责任公司 | Management and control method and management and control device for distribution network loop closing operation risk |
| CN112491048A (en) * | 2020-11-25 | 2021-03-12 | 国网湖北省电力有限公司咸宁供电公司 | Closed loop current calculation method, closed loop current calculation device, closed loop current calculation equipment and storage medium |
| CN114301099A (en) * | 2022-01-04 | 2022-04-08 | 南京大全电气研究院有限公司 | Bus switching method and device, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108304613A (en) | Closed loop network powered operation methods of risk assessment | |
| CN102437573B (en) | Evaluation and control method and system for reliability of electric distribution network based on fuzzy modeling | |
| CN107506849A (en) | A kind of intelligent optimization distribution transforming, which has a power failure, studies and judges system | |
| CN101860026B (en) | Analysis method of electromagnetic loop closing and power reversing operation of urban distribution network | |
| CN106033891B (en) | A kind of automatic commutation device of low-voltage load parallel on-line and its operating method | |
| CN105429137B (en) | The method that distribution network closed loop turns power supply | |
| CN105552882B (en) | A kind of control method of power network cyclization | |
| CN103514364B (en) | The grid equipment overload aid decision computational methods of meter and load transfer measure | |
| CN105356461B (en) | A kind of accounting method of the load unbalanced administration project carbon emission reduction amount of low voltage electric network | |
| CN104166940B (en) | Power distribution network operation risk assessment method and assessment system | |
| CN104112076B (en) | Operation risk assessment method and assessment system based on fuzzy mathematics | |
| CN107492908A (en) | A kind of feeder line Method for optimized planning based on distributed power source access | |
| CN106684896A (en) | Three phase four wire system ship power grid power management system and method | |
| CN110929212B (en) | Online calculation method for searching weak thermal stability section of large power grid and formulating quota | |
| CN109103879A (en) | A kind of full dimension closed loop network appraisal procedure | |
| CN104538962A (en) | Method for evaluating safety risk of power distribution network on basis of average expected value | |
| WO2014180125A1 (en) | Method for security check of operation ticket based on disturbance assessment and trend analysis | |
| CN107425601A (en) | A kind of household main frame and load monitoring management method | |
| CN108493965A (en) | Distribution transformer three-phase imbalance Automatic adjustment method | |
| CN107451685A (en) | A kind of distribution network planning LCC models based on power distribution automation | |
| CN109347182B (en) | Charging pile control unit | |
| CN105226666B (en) | To the check method of reactive apparatus running status in transformer station's automatism voltage control | |
| CN207303696U (en) | A kind of city rail vehicle static debugging DC power system with converter system | |
| CN106469905B (en) | Distribution network protection method based on distribution network three-way defense line | |
| CN101325324B (en) | Anti-icing method for overhead wire based on real time operation mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180720 |
|
| RJ01 | Rejection of invention patent application after publication |