CN107066639A - Area power grid breakdown loss Consequence calculation method based on topological analysis - Google Patents
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Abstract
The invention discloses a kind of area power grid breakdown loss Consequence calculation method based on topological analysis, model extension, increase attribute " customer interrupted number ", " power failure responsible consumer number ", " responsible consumer " and " responsible consumer grade " are carried out to " load " of area power grid intelligent control main station system；Area power grid intelligent control main station system preserves data section, and electric network fault equipment is divided into 2 kinds of load and other equipment, no matter which kind of failure, topological analysis and load model can be based on, it is accurate to calculate breakdown loss load, judge power failure equipments, analysis power failure range, count customer interrupted；Using the method for the present invention, the result of calculation of breakdown loss load is more accurate, while there is provided than more rich customer interrupted information and power failure range analytic function, more meeting the technical requirements of intelligent grid, with very high engineering practicability, application prospect is quite varied.
Description
Technical field
The present invention relates to power system automatic field, more particularly to a kind of area power grid failure based on topological analysis is damaged
Lose Consequence calculation method.
Background technology
Grid collapses can cause damage, and electric network fault loss consequence is paid much attention to by power grid operation personnel.Power network
Breakdown loss consequence includes loss load, power failure equipments and customer interrupted.Wherein:
(1) breakdown loss load=failure removal load+low pressure trip loss load；
(2) power failure equipments include faulty equipment and the miscellaneous equipment having a power failure by this failure, and find out power failure equipments just
It is analysis power failure range；
(3) customer interrupted includes customer interrupted number, power failure responsible consumer number, customer interrupted grade (in each customer interrupted most
Serious grade) and power failure responsible consumer.
The intelligent control main station system of current each department power network, when calculating breakdown loss consequence, only calculates breakdown loss
Load and analysis power failure range, have ignored customer interrupted.Moreover, when calculating breakdown loss load, low pressure trip damage is not calculated
Load is lost, and only calculates failure removal load, that is, employs the approximate calculation of " breakdown loss load ≈ failure removals load ".
In summary, it is necessary to a kind of new area power grid breakdown loss Consequence calculation method be found, comprehensively and accurately to count
Calculate the loss caused after electric network fault.
The content of the invention
In view of this, it is an object of the invention to provide a kind of area power grid breakdown loss Consequence calculation based on topological analysis
Method.When being broken down in power network, it can either calculate failure removal load, and low pressure trip loss load can be calculated again,
And then accurate calculating breakdown loss load, it is convenient and reliable.
The purpose of the present invention is achieved through the following technical solutions：
The present invention the area power grid breakdown loss Consequence calculation method based on topological analysis, be grid equipment is divided into it is negative
Lotus and the class of other equipment 2, load model extension, increase " number of users ", " important are carried out to area power grid intelligent control main station system
Number of users ", " responsible consumer ", " responsible consumer grade " totally 4 attributes, realize precisely classification；
Wherein charge circuit breakdown loss Consequence calculation method is directly to read and count to have a power failure from load extended model
User data, according to failure removal load and the relation of equality of breakdown loss load, obtains failure by failure removal load and damages
Lose load；
The computational methods of miscellaneous equipment breakdown loss consequence are as follows：
Step one：Based on topological analysis to low-voltage bus bar-active automatic modeling, low-voltage bus bar and step down side are set up
Active corresponding relation；
Step 2：Based on topological analysis, power failure equipments are judged, and by the low-voltage bus bar of its association, accumulation calculating failure is damaged
Lose load and customer interrupted.
Particularly, in charge circuit breakdown loss Consequence calculation method, area power grid intelligent control main station system is passed through
Need to preserve profile data, preserve at intervals of settable.When failure occurs, area power grid intelligent control main station system preserves 0
Moment and the section at 1 moment, choose the 1 moment section nearest from failure 1 and are calculated as ground state section, failure is damaged during calculating
Load=failure removal load is lost, takes charge circuit active, currency is subtracted with the value of ground state section.
Particularly, the step of computational methods of miscellaneous equipment breakdown loss consequence two) in, breakdown loss Load Calculation Method
It is as follows：
Ploss=P1+P2；
Wherein, PlossFor breakdown loss load, P1For failure removal load, P2Load, i.e. failure are lost for low pressure trip to damage
It is that failure removal load loses load sum with low pressure trip to lose total load；
Failure removal Load Calculation Method is as follows：
P1=∑ Pbi- ∑s Pci；
Wherein, P1For failure removal load, n is the sum of current all dead electricity low-voltage bus bars, and i spans are [1, n],
Pbi is i-th decompression bus ground state section load, and Pci is i-th decompression bus current loads；
The computational methods of low pressure trip loss load are as follows：
P2=∑ Pbj- ∑s Pcj；
Wherein, P2Load is lost for low pressure trip, m is the sum of current all powered low-voltage bus bars, and j span is
[1, m], Pbj is the powered low-voltage bus bar ground state section load of j-th strip, and Pcj is the powered low-voltage bus bar current loads of j-th strip.
The beneficial effects of the invention are as follows：By using the present invention method, no matter which kind of failure, can be based on topological analysis
With load extended model, accurate calculating breakdown loss load simultaneously counts customer interrupted, moreover it is possible to based on topology band electroanalysis, judge to stop
Electric equipment, analyzes power failure range, being accurately calculated for breakdown loss consequence is believed there is provided the customer interrupted compared with horn of plenty
Breath, while completely remaining power failure range analytic function, more meets the technical requirements of intelligent grid, with very high Practical
Property, application prospect is quite varied.
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.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is that the profile data of embodiment preserves schematic diagram.
Fig. 2 is low-voltage bus bar and step down side through branch switch connection diagram.
Fig. 3 is low-voltage bus bar and the direct-connected schematic diagram of step down side.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.It should be appreciated that preferred embodiment
Only for the explanation present invention, the protection domain being not intended to be limiting of the invention.
Grid equipment of the present invention is divided into load and the class of other equipment 2, and so-called charge circuit refers to that those 10kV (also have few
Measure 35kV) directly on-load circuit, first carry out load model extension, because area power grid intelligent control main station system has been
Load modeling, in order to calculate and count customer interrupted, it is necessary to extend its model, increase " number of users ", " responsible consumer number ", " weight
Want user ", " responsible consumer grade " totally 4 attributes.
One load may correspondingly multiple " responsible consumers " (similarly, corresponding " responsible consumer grade " also has multiple),
5 responsible consumers of reservation and user gradation can be given tacit consent to, the regulation of each grid company of user gradation there may be difference, can be according to reality
Border situation is confirmed that in actual applications, these information are static informations, it is necessary to manual entry and maintenance.
Two kinds of computational methods are described in detail below by a specific embodiment：
(1) charge circuit breakdown loss Consequence calculation method
As shown in Figure 1, in order to calculate breakdown loss load, area power grid intelligent control main station system needs to preserve section
Data, are preserved at intervals of 30 seconds (settable), and area power grid intelligent control main station system is by a upper moment, a upper moment
Data section all preserved, that is, be permanently present the data section at one or two moment：Last moment, upper last moment
's.
When failure 1 occurs, area power grid intelligent control main station system preserves the section at 0 moment and 1 moment, is selected during calculating
The 1 moment section nearest from failure 1 is taken to be calculated as ground state section；(just at 2 moment) during the generation of failure 2, server
The section at 1 moment and 2 moment is preserved, the section for now still choosing for 1 moment is calculated as ground state section；By that analogy.
Charge circuit breaks down, breakdown loss load=failure removal load, and computational methods are to take charge circuit active,
Currency is subtracted with the value of ground state section；Power failure equipments are exactly load itself, without topological analysis；Customer interrupted inquiry load expands
The relevant information of exhibition model is calculated.
(2) miscellaneous equipment breakdown loss Consequence calculation method
During miscellaneous equipment failure (especially transformer, bus, the line fault of voltage levels), to power network harm compared with
Greatly.Its breakdown loss consequence will be realized by low-voltage bus bar-active model.The foundation and maintenance of low-voltage bus bar-active model
It is automatically performed.Area power grid intelligent control main station system obtains low-voltage bus bar (institute by topological analysis using annexation search
Bus with all charge circuits of circuit), and its corresponding relation active with step down side is set up, it common are 2 kinds
Situation：
A. low-voltage bus bar is connected (as shown in Figure 2) with step down side through branch switch, now, low-voltage bus bar correspondence
It is active take the branch switch have work value.
B. low-voltage bus bar and step down side are direct-connected (as shown in Figure 3), now, and low-voltage bus bar is corresponding active to take change
Depressor low-pressure side winding has work value.
As shown in Figure 1, after grid collapses, a data section nearest from fault moment is chosen disconnected as ground state
Face, after 20 seconds (configurable) at the moment, active to main transformer low-pressure side and its low-pressure side low-voltage bus bar powered situation is carried out
Scanning.
All main transformer low-pressure sides are traveled through, according to the powered situation of main transformer low-pressure side correspondence low-voltage bus bar, every bus is had
Work(changing value (value after failure occurs 20 seconds subtracts ground state value), is added to failure removal load, low pressure trip loss and bears respectively
Lotus and breakdown loss load.
Breakdown loss Load Calculation Method is as follows：
Ploss=P1+P2；
Wherein, PlossFor breakdown loss load, P1For failure removal load, P2Load is lost for low pressure trip.I.e.：Failure
It is that failure removal load loses load sum with low pressure trip to lose total load.
Failure removal Load Calculation Method is as follows：
P1=∑ Pbi- ∑s Pci；
Wherein, P1For failure removal load, n be current all dead electricity low-voltage bus bars sum (i spans for [1,
N]), Pbi is i-th decompression bus ground state section load, and Pci is i-th decompression bus current loads.
I.e.：Failure removal load is that active total add and subtract of the current all dead electricity low-voltage bus bars under ground state section goes to current institute
There is dead electricity low-voltage bus bar load always to add.
The computational methods of low pressure trip loss load are as follows：
P2=∑ Pbj- ∑s Pcj；
Wherein, P2Load is lost for low pressure trip, and m is that (j span is for the sums of current all powered low-voltage bus bars
[1, m]), Pbj is the powered low-voltage bus bar ground state section load of j-th strip, and Pcj is the powered low-voltage bus bar current loads of j-th strip.
I.e.：Low pressure trip loss load goes current for the total plus-minus of load of the current all non-decompression buses under ground state section
All non-decompression bus loads always add.
In addition, power failure range analysis is the judgement of power failure equipments, still using traditional topological powered parser.Have a power failure and use
The charge circuit that family is connected based on low-voltage bus bar, counts the information in its corresponding load extended model.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (3)
1. the area power grid breakdown loss Consequence calculation method based on topological analysis, it is characterised in that：Grid equipment is divided into negative
Lotus and the class of other equipment 2, load model extension, increase " number of users ", " important are carried out to area power grid intelligent control main station system
Number of users ", " responsible consumer ", " responsible consumer grade " totally 4 attributes, realize Accurate Classification；
Wherein charge circuit failure when, power failure equipments be exactly " load " itself, low pressure trip loss load will not be produced, therefore passed through
Failure removal load obtains breakdown loss load, then directly reads and count customer interrupted information from load extended model；
The computational methods of miscellaneous equipment breakdown loss consequence are as follows：
Step one：Based on topological analysis to low-voltage bus bar-active automatic modeling, low-voltage bus bar is set up active with step down side
Corresponding relation；
Step 2：Based on topological analysis, power failure equipments are judged, and by the low-voltage bus bar of its association, accumulation calculating breakdown loss is born
Lotus and customer interrupted.
2. the area power grid breakdown loss Consequence calculation method according to claim 1 based on topological analysis, its feature exists
In：In charge circuit breakdown loss Consequence calculation method, need to preserve section by area power grid intelligent control main station system
Data, are preserved at intervals of settable, when failure occurs, and area power grid intelligent control main station system preserves 0 moment and 1 moment
Section, chooses the 1 moment section nearest from failure 1 and is calculated as ground state section during calculating, according to breakdown loss load=
Failure removal load, takes charge circuit active, and currency is subtracted with the value of ground state section.
3. the area power grid breakdown loss Consequence calculation method according to claim 1 based on topological analysis, its feature exists
In：Two the step of the computational methods of miscellaneous equipment breakdown loss consequence) in, breakdown loss Load Calculation Method is as follows：
Ploss=P1+P2；
Wherein, PlossFor breakdown loss load, P1For failure removal load, P2It is total for low pressure trip loss load, i.e. breakdown loss
Load is that failure removal load loses load sum with low pressure trip；
Failure removal Load Calculation Method is as follows：
P1=∑ Pbi- ∑s Pci；
Wherein, P1For failure removal load, n is the sum of current all dead electricity low-voltage bus bars, and i spans are [1, n], and Pbi is
I-th decompression bus ground state section load, Pci is i-th decompression bus current loads；
The computational methods of low pressure trip loss load are as follows：
P2=∑ Pbj- ∑s Pcj；
Wherein, P2Lose load for low pressure trip, m is the sum of current all powered low-voltage bus bars, j span be [1,
M], Pbj is the powered low-voltage bus bar ground state section load of j-th strip, and Pcj is the powered low-voltage bus bar current loads of j-th strip.
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Cited By (3)
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| CN108107318A (en) * | 2017-11-03 | 2018-06-01 | 国网北京市电力公司 | The localization method and device of user malfunction |
| CN108110893A (en) * | 2017-11-22 | 2018-06-01 | 国电南瑞科技股份有限公司 | A kind of electric network fault grade automatic identifying method of transmission ＆ distribution collaboration |
| CN108879660A (en) * | 2018-06-22 | 2018-11-23 | 广东电网有限责任公司 | A kind of method that electric network fault loss of outage load calculates realization automatically |
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| CN108879660A (en) * | 2018-06-22 | 2018-11-23 | 广东电网有限责任公司 | A kind of method that electric network fault loss of outage load calculates realization automatically |
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