CN109962477A - For indicating the method and system of bus and branch-based voltage stability index - Google Patents
For indicating the method and system of bus and branch-based voltage stability index Download PDFInfo
- Publication number
- CN109962477A CN109962477A CN201910152096.6A CN201910152096A CN109962477A CN 109962477 A CN109962477 A CN 109962477A CN 201910152096 A CN201910152096 A CN 201910152096A CN 109962477 A CN109962477 A CN 109962477A
- Authority
- CN
- China
- Prior art keywords
- power
- bus
- reactive
- load
- active
- 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
-
- 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
-
- 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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of methods for indicating bus and branch-based voltage stability index, it is characterized in that, the described method includes: S1: obtaining the active power and reactive power of the off line active power of the bus, reactive power and line transmission, obtain load active-power PL, reactive load power QL；S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd reactive power maximum value QLmax；S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2LmaxAnd reactive power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route.Mentioned index calculating method is simple, weak degree can be stablized to the bus and line voltage distribution of system by the calculating of index to be ranked up, the voltage stabilization weak link that power grid is understood in the case where not needing emulation, to instructing security and stability analysis of the power grid in terms of voltage stabilization to be of great significance.
Description
Technical field
The invention belongs to technical field of power systems, more particularly to one kind is for indicating bus and branch-based voltage stability index
Method and system.
Background technique
The current judgement in relation to voltage stabilization weak link is based primarily upon the analysis to whole system, and calculation method is more
Complexity, the index in relation to voltage stabilization weakness bus and weak route are relatively fewer.
Summary of the invention
One of the technical issues of the present invention is directed to solve in the related technology to a certain extent.
For this purpose, the first purpose of this invention be to propose it is a kind of for indicating the side of bus and branch-based voltage stability index
Method.Solve the problems, such as that related voltage stabilization weak link judgment method is complicated when electricity net safety stable analysis, proposition judges bus
And weak index and method of the route in terms of voltage stabilization.
Second object of the present invention is to propose a kind of for judging the side of voltage stabilization weakness bus and weak route
Method.
Third object of the present invention is to propose a kind of system for indicating bus and branch-based voltage stability index.
Fourth object of the present invention is to propose
System.
In order to achieve the above objectives, what first aspect present invention embodiment proposed is used to indicate that bus and line voltage distribution stabilization to refer to
Calibration method, comprising:
S1: the active power and reactive power of the off line active power of the bus, reactive power and line transmission are obtained, is obtained
To load active-power PL, reactive load power QL。
S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd nothing
Function power maximum value QLmax。
S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2Lmax
And reactive power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route.
The method for being used to judge voltage stabilization weakness bus and weak route that second aspect of the present invention embodiment proposes, institute
The method of stating includes:
S1: the active power and reactive power of the off line active power of bus, reactive power and line transmission are obtained, is born
Lotus active-power PL, reactive load power QL。
S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd nothing
Function power maximum value QLmax。
S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2Lmax
And reactive power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route.
S4: the stable active power of the reactive power index value stable to the busbar voltage, the line voltage distribution respectively
Index value descending sort.
S5: the weak sequence of the voltage stabilization of the bus reactive power index value descending row stable with the busbar voltage
Sequence sequence is identical, the stable weak sequence of the line voltage distribution active power index value descending row stable with the line voltage distribution
Sequence sequence is identical.
The system for indicating bus and branch-based voltage stability index that third aspect present invention embodiment proposes, the system
System includes:
First obtains module, for obtaining the off line active power of the bus, reactive power and the wattful power of line transmission
Rate and reactive power obtain load active-power PL, reactive load power QL。
First computing module, the load active power for route where calculating separately the bus and the bus
Maximum value PLmaxAnd reactive power maximum value QLmax。
Second computing module, for obtaining the load active-power P of module by described firstL, reactive load power QLWith
And the load active power maximum value P of first computing moduleLmaxAnd reactive power maximum value QLmaxObtain the bus and line
The voltage stabilization active power and reactive power index on road.
The system for being used to judge voltage stabilization weakness bus and weak route that fourth aspect present invention embodiment proposes, institute
The system of stating includes:
First obtains module, for obtaining the off line active power of the bus, reactive power and the wattful power of line transmission
Rate and reactive power obtain load active-power PL, reactive load power QL。
First computing module, the load active power for route where calculating separately the bus and the bus
Maximum value PLmaxAnd reactive power maximum value QLmax。
Second computing module, for obtaining the load active-power P of module by described firstL, reactive load power QLWith
And the load active power maximum value P of first computing moduleLmaxAnd reactive power maximum value QLmaxObtain the bus and line
The voltage stabilization active power and reactive power index on road.
Third computing module, the reactive power stable for the busbar voltage respectively to second computing module refer to
The stable active power index value descending sort of scale value, the line voltage distribution.
Second obtains module, for by the weak sequence of the voltage stabilization of the bus of the third computing module with it is described
The stable reactive power index value descending sort sequence of busbar voltage is identical, the stable weak sequence of the line voltage distribution with it is described
The stable active power index value descending sort sequence of line voltage distribution is identical.
The present invention is based on the derivation of equation of single load Infinite bus system, the active power index of voltage stabilization and idle is proposed
Power index, and it is generalized to the general bus and route of electric system, mentioned index is used for actual electric network and is verified.Solution
Problem in relation to voltage stabilization weak link judgment method complexity when certainly electricity net safety stable is analyzed, proposition judge bus and route
Weak index and method in terms of voltage stabilization.Mentioned index calculating method is simple, can be by the calculating of index to system
Bus and line voltage distribution stablize weak degree and be ranked up, the voltage stabilization that power grid is understood in the case where not needing emulation is thin
Weak link, to instructing security and stability analysis of the power grid in terms of voltage stabilization to be of great significance.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is the method flow for being used to indicate bus and branch-based voltage stability index for disclosing embodiment according to the present invention
Figure；
Fig. 2 is the single load Infinite bus system circuit diagram for disclosing embodiment according to the present invention；
Fig. 3 be according to embodiments of the present invention disclosed Huainan-Wuhu three forever " N-2 " failure when each extra-high voltage busbar voltage
Figure；
Fig. 4 be according to embodiments of the present invention disclosed Huainan-Wuhu three forever " N-2 " failure when the extra-high voltage that is affected
Route active power figure；
Fig. 5 be according to embodiments of the present invention disclosed Huainan-Wuhu three forever " N-2 " failure when the extra-high voltage that is affected
Route reactive power figure；
Fig. 6 is that disclosed Taizhou station, Suzhou station install Huaihe River after 4 phase modifiers and 4 SVG additional respectively according to embodiments of the present invention
" N-2 " failure system maximum generation machine generator rotor angle difference comparison diagram forever of south-Wuhu three；
Fig. 7 is that disclosed Taizhou station, Suzhou station install Huaihe River after 4 phase modifiers and 4 SVG additional respectively according to embodiments of the present invention
The minimum busbar voltage comparison diagram of " N-2 " failure system forever of south-Wuhu three.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, right combined with specific embodiments below
The present invention is described in further detail.
The present invention is based on the derivation of equation of single load Infinite bus system, the active power index of voltage stabilization and idle is proposed
Power index, and it is generalized to the general bus and route of electric system, mentioned index is used for actual electric network and is verified.Institute
It mentions that index calculating method is simple, weak degree can be stablized to the bus and line voltage distribution of system by the calculating of index and arranged
Sequence, do not need emulation in the case where understand power grid voltage stabilization weak link, to instruct power grid in terms of voltage stabilization
Security and stability analysis is of great significance.
The present invention obtains maximum burden with power, maximum idle work load in single load Infinite bus system according to the derivation of equation first
With the relationship between line parameter circuit value and System Reactive Power load, burden with power, provides judge having for system voltage degree of stability later
Function power index and reactive power index may determine that the voltage stabilization degree of system median generatrix and route using the index, refer to
Mark shows more greatly bus or the easier Voltage Instability of route, finally gives and judges system weakness bus and thin using mentioned index
The method on weak line road.
First against judging that it is as follows that the stable index of system voltage is illustrated.
The method for indicating bus and branch-based voltage stability index that first aspect present invention embodiment proposes, comprising:
S1: the active power and reactive power of the off line active power of the bus, reactive power and line transmission are obtained, is obtained
To load active-power PL, reactive load power QL。
S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd nothing
Function power maximum value QLmax。
S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2Lmax
And reactive power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route.
Single load Infinite bus system circuit diagram is as shown in Figure 1.Wherein PL、QLIt is load active power and reactive power respectively,
PS、QSFor the active power and reactive power of line transmission, X is line impedance,
It can be obtained according to the derivation of equation:
From formula (3) as can be seen that UiAbsolute value is bigger, then PLAbsolute value is bigger.From formula (5) as can be seen that QLMore connect
It is bordering on 0, UrCloser to 1/2, UiAbsolute value is bigger.
It can be obtained according to formula (3), (4)
(PLX)2+(U2+QLX)2=U2 (6)
It can obtain
Then have
Work as PL=PLmaxWhen
It can be using the active power index stable as measurement bus in system and line voltage distribution.
According to formula (8), can obtain:
WhenWhen:
But in fact, U=PLU value very little when X, therefore, when U in the reasonable scope when, reach minimum value UminWhen QL
Reach maximum value, enables Umin=0.95, then it can obtain
It can be using the reactive power index stable as measurement system busbar and line voltage distribution.
Mentioned index can be used for judging the voltage stabilization degree of bus and route, when being used for bus, PL、QLFor bus
Off line active power and reactive power, when being used for route, PL、QLFor the active power and reactive power of line transmission.
Specifically, judge the method that system voltage stablizes weak bus and weak route:
Judge that system voltage stablizes weak bus and line of weakness using voltage stability active power and reactive power index
The following of the method on road
The method for being used to judge voltage stabilization weakness bus and weak route that second aspect of the present invention embodiment proposes, institute
The method of stating includes:
S1: the active power and reactive power of the off line active power of bus, reactive power and line transmission are obtained, is born
Lotus active-power PL, reactive load power QL。
S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd nothing
Function power maximum value QLmax.The P of bus and route is calculated using formula (9) and formula (12)LmaxAnd QLmax；
S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2Lmax
And reactive power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route.It calculates each
The voltage stabilization active power and reactive power index of bus and route.
S4: the stable active power of the reactive power index value stable to the busbar voltage, the line voltage distribution respectively
Index value descending sort.
S5: the weak sequence of the voltage stabilization of the bus reactive power index value descending row stable with the busbar voltage
Sequence sequence is identical, the stable weak sequence of the line voltage distribution active power index value descending row stable with the line voltage distribution
Sequence sequence is identical.
The system for indicating bus and branch-based voltage stability index that third aspect present invention embodiment proposes, the system
System includes:
First obtains module, for obtaining the off line active power of the bus, reactive power and the wattful power of line transmission
Rate and reactive power obtain load active-power PL, reactive load power QL。
First computing module, the load active power for route where calculating separately the bus and the bus
Maximum value PLmaxAnd reactive power maximum value QLmax。
Second computing module, for obtaining the load active-power P of module by described firstL, reactive load power QLWith
And the load active power maximum value P of first computing moduleLmaxAnd reactive power maximum value QLmaxObtain the bus and line
The voltage stabilization active power and reactive power index on road.
The system for being used to judge voltage stabilization weakness bus and weak route that fourth aspect present invention embodiment proposes, institute
The system of stating includes:
First obtains module, for obtaining the off line active power of the bus, reactive power and the wattful power of line transmission
Rate and reactive power obtain load active-power PL, reactive load power QL。
First computing module, the load active power for route where calculating separately the bus and the bus
Maximum value PLmaxAnd reactive power maximum value QLmax。
Second computing module, for obtaining the load active-power P of module by described firstL, reactive load power QLWith
And the load active power maximum value P of first computing moduleLmaxAnd reactive power maximum value QLmaxObtain the bus and line
The voltage stabilization active power and reactive power index on road.
Third computing module, the reactive power stable for the busbar voltage respectively to second computing module refer to
The stable active power index value descending sort of scale value, the line voltage distribution.
Second obtains module, for by the weak sequence of the voltage stabilization of the bus of the third computing module with it is described
The stable reactive power index value descending sort sequence of busbar voltage is identical, the stable weak sequence of the line voltage distribution with it is described
The stable active power index value descending sort sequence of line voltage distribution is identical.
Mentioned index is used to analyze East China certain programme in 2025 below.
Under the programme, under the extreme electric means in East China, when fault-free, the off line power and index value at each extra-high voltage station
As shown in the table.
The off line power of 1 East China extra-high voltage bus of table and voltage stability index value
From table 1 result can be seen that each extra-high voltage station active index it is little, index phase that part extra-high voltage station is idle
It to larger, therefore, sorts by idle index, the maximum station of index is Taizhou station, shows that the extra-high voltage station is the thin of voltage stabilization
Weak bus.
Active index and idle index are calculated to each extra high voltage line, as a result as shown in table 2 below.
2 East China extra high voltage line power of table and voltage stability index value
As can be seen from the results in the table that the active and reactive index of Taizhou-Suzhou route is maximum.Show the route for weakness
Route.
Electromechanical transient simulation is carried out to which using PSD-BPA software, the results showed that, when to Taizhou-Suzhou route shadow
Ring maximum Huainan-Wuhu route occur three forever " N-2 " failure when, Voltage Instability occurs for system.Simulation result such as Fig. 3 to Fig. 5
It is shown.
From simulation result as can be seen that the voltage in Taizhou, Suzhou falls at first, Taizhou-Suzhou, Nanjing-Taizhou are active
Power first falls, and Taizhou-Suzhou reactive power maintains always biggish value.
Due to analyzing the weak link for being Taizhou for voltage stabilization, accordingly, it is considered to which increasing phase modifier and SVG enhances the weakness
The voltage stability of link, and the effect after Contrast enhanced.The result shows that when Taizhou increase by 4 300MVA phase modifier and 4
After the SVG of 300MVar, Huainan-Wuhu three is forever after " N-2 " failure, and system is able to maintain stabilization, and the phase modulation of identical capacity
After machine and SVG are attached to Suzhou station, Huainan-Wuhu three is forever after " N-2 " failure, system still unstability.Specific simulation result is as schemed
6 to shown in Fig. 7.
Fig. 7 is that Taizhou station, Suzhou station install after 4 phase modifiers and 4 SVG " N-2 " failure forever of Huainan-Wuhu three additional respectively
The minimum busbar voltage comparison of system
From simulation result as can be seen that Taizhou station is the voltage weakness bus of system, phase modifier and SVG energy are installed additional at the station
Enough voltage stabilities for improving system well.
Above-mentioned the embodiment of the present application serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
In above-described embodiment of the application, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit or module,
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or module or group
Part can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, module or unit it is indirect
Coupling or communication connection can be electrical or other forms.
The unit as illustrated by the separation member or module may or may not be physically separated, as
The component that unit or module are shown may or may not be physical unit or module, it can and it is in one place, or
Person may be distributed in multiple network units or module.Some or all of list therein can be selected according to the actual needs
Member or module achieve the purpose of the solution of this embodiment.
In addition, each functional unit or module in each embodiment of the application can integrate in a processing unit or mould
In block, it is also possible to each unit or module physically exists alone, can also be integrated in two or more units or module
In one unit or module.Above-mentioned integrated unit or module both can take the form of hardware realization, can also use software
The form of functional unit or module is realized.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the application whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only the preferred embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (4)
1. the method for indicating bus and branch-based voltage stability index, which is characterized in that the described method includes:
S1: the active power and reactive power of the off line active power of the bus, reactive power and line transmission are obtained, is born
Lotus active-power PL, reactive load power QL；
S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd reactive power
Maximum value QLmax；
S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2LmaxAnd nothing
Function power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route.
2. the method for judging voltage stabilization weakness bus and weak route, which is characterized in that the described method includes:
S1: the active power and reactive power of the off line active power of bus, reactive power and line transmission are obtained, obtaining load has
Function power PL, reactive load power QL；
S2: the load active power maximum value P of route where calculating separately the bus and the busLmaxAnd reactive power
Maximum value QLmax；
S3: pass through the load active-power P of S1L, reactive load power QLAnd the load active power maximum value P of S2LmaxAnd nothing
Function power maximum value QLmaxObtain the voltage stabilization active power and reactive power index of the bus and route；
S4: the stable active power index of the reactive power index value stable to the busbar voltage, the line voltage distribution respectively
It is worth descending sort；
S5: the reactive power index value descending sort stable with the busbar voltage of the weak sequence of the voltage stabilization of the bus is suitable
Sequence is identical, and the active power index value descending sort stable with the line voltage distribution of the stable weak sequence of the line voltage distribution is suitable
Sequence is identical.
3. for indicating bus and the stable system of line voltage distribution, which is characterized in that the system comprises:
First obtain module, for obtain the off line active power of the bus, reactive power and line transmission active power and
Reactive power obtains load active-power PL, reactive load power QL；
First computing module, the load active power for route where calculating separately the bus and the bus are maximum
Value PLmaxAnd reactive power maximum value QLmax；
Second computing module, for obtaining the load active-power P of module by described firstL, reactive load power QLAnd institute
State the load active power maximum value P of the first computing moduleLmaxAnd reactive power maximum value QLmaxObtain the bus and route
Voltage stabilization active power and reactive power index.
4. for judging the system of voltage stabilization weakness bus and weak route, which is characterized in that the system comprises:
First obtain module, for obtain the off line active power of the bus, reactive power and line transmission active power and
Reactive power obtains load active-power PL, reactive load power QL；
First computing module, the load active power for route where calculating separately the bus and the bus are maximum
Value PLmaxAnd reactive power maximum value QLmax；
Second computing module, for obtaining the load active-power P of module by described firstL, reactive load power QLAnd institute
State the load active power maximum value P of the first computing moduleLmaxAnd reactive power maximum value QLmaxObtain the bus and route
Voltage stabilization active power and reactive power index；
Third computing module, the reactive power index stable for the busbar voltage respectively to second computing module
The stable active power index value descending sort of value, the line voltage distribution；
Second obtains module, for by the weak sequence of the voltage stabilization of the bus of the third computing module and the bus
The reactive power index value descending sort sequence of voltage stabilization is identical, the stable weak sequence of the line voltage distribution and the route
The active power index value descending sort sequence of voltage stabilization is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910152096.6A CN109962477A (en) | 2019-02-28 | 2019-02-28 | For indicating the method and system of bus and branch-based voltage stability index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910152096.6A CN109962477A (en) | 2019-02-28 | 2019-02-28 | For indicating the method and system of bus and branch-based voltage stability index |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109962477A true CN109962477A (en) | 2019-07-02 |
Family
ID=67023967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910152096.6A Pending CN109962477A (en) | 2019-02-28 | 2019-02-28 | For indicating the method and system of bus and branch-based voltage stability index |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109962477A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052063A (en) * | 2014-07-03 | 2014-09-17 | 国家电网公司 | Network voltage stability monitoring method based on node voltage stability indexes taking account of static load characteristic |
| CN109361221A (en) * | 2018-09-27 | 2019-02-19 | 中国电力科学研究院有限公司 | A kind of method and system calculating Minimum Area Reactive Power Reserve nargin |
-
2019
- 2019-02-28 CN CN201910152096.6A patent/CN109962477A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052063A (en) * | 2014-07-03 | 2014-09-17 | 国家电网公司 | Network voltage stability monitoring method based on node voltage stability indexes taking account of static load characteristic |
| CN109361221A (en) * | 2018-09-27 | 2019-02-19 | 中国电力科学研究院有限公司 | A kind of method and system calculating Minimum Area Reactive Power Reserve nargin |
Non-Patent Citations (1)
| Title |
|---|
| 高峰等: ""电力系统负荷节点在线电压稳定指标研究"", 《电力建设》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Balamurugan et al. | Review of power flow studies on distribution network with distributed generation | |
| Lin et al. | Division algorithm and interconnection strategy of restoration subsystems based on complex network theory | |
| EP3075057A2 (en) | Method of determining an islanding solution for an electrical power system | |
| Ranjan et al. | Power flow solution of three-phase unbalanced radial distribution network | |
| CN104901308B (en) | Power system critical circuits discrimination method | |
| CN109802392A (en) | Large-scale distribution network tidal current computing method and device | |
| CN102749492A (en) | Short-circuit current computing method for ring-shaped ship power grid | |
| CN109687436A (en) | A kind of Optimal network frame algorithm considering limiting short-circuit current | |
| CN104156531A (en) | Fault current limiter distribution point optimization and capacity selection method taking operation loss into consideration | |
| CN106655201A (en) | Security domain-based safe optimization and control method for electric power thermal stability | |
| CN110135039A (en) | Wind-powered electricity generation collects regional non-equilibrium among three phase voltages and determines method and device | |
| CN105680442B (en) | Consider that the expectation of trend and sensitivity consistency equivalence lacks power supply volume appraisal procedure | |
| US11698396B2 (en) | Enhanced backward/forward sweep based load flow approach for extended radial distribution system | |
| Jayawardene et al. | A graph theory-based clustering method for power system networks | |
| CN103529275B (en) | Area power grid Analysis of Short-Circuit Current method and apparatus | |
| CN109962477A (en) | For indicating the method and system of bus and branch-based voltage stability index | |
| Abdel-Akher et al. | An approach to determine a pair of power-flow solutions related to the voltage stability of unbalanced three-phase networks | |
| CN110912199A (en) | Point distribution and constant volume method and device for multi-direct-current feed-in receiving-end power grid synchronous phase modifier | |
| CN109787238A (en) | For obtaining the method and system of data relevant to Load flow calculation after failure | |
| CN110879913A (en) | Heterogeneous grid topology mapping method for offline and online data of power grid | |
| CN107370180B (en) | Method for quantitatively analyzing influence of wind power access on system transient stability | |
| CN109038657A (en) | Processing method, device, server and the medium of marine wind electric field primary system | |
| CN105893680B (en) | The method and apparatus of data processing | |
| CN107436995A (en) | Consider outer net to ground leg and the equivalent three-phase shortcircuit computational methods of sensitivity information | |
| Bijwe et al. | Ranking of line outages in an AC-DC system causing overload and voltage problems |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190702 |