CN105139075B - Consider that the power system security planned in real time stablizes prevention and control Rolling decision method - Google Patents
Consider that the power system security planned in real time stablizes prevention and control Rolling decision method Download PDFInfo
- Publication number
- CN105139075B CN105139075B CN201510220603.7A CN201510220603A CN105139075B CN 105139075 B CN105139075 B CN 105139075B CN 201510220603 A CN201510220603 A CN 201510220603A CN 105139075 B CN105139075 B CN 105139075B
- Authority
- CN
- China
- Prior art keywords
- moment
- profile data
- power networks
- voltage
- bus
- 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.)
- Active
Links
Classifications
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
Consider that the power system security planned in real time stablizes prevention and control Rolling decision method the invention discloses a kind of, to solve the problem of that the operation of power networks moment corresponding to the existing online preventive control result of decision is difficult to ensure earlier than power grid its reliability of the current time of running.The method of the present invention uses safety and stability conservatism, based on history, current and real-time planning data, to the throwing of first and second equipment of future time instance/stop state and operation information is estimated, reduce influence of the evaluated error to control decision result reliability because of future time instance operation of power networks state, it is calculated by the safety and stability evaluation and prevention and control decision that are directed to future time instance operation of power networks state, at the time of so that the operation of power networks moment corresponding to control decision result is later than acquisition control decision result, the reliability of control decision result is improved.
Description
Technical field
The present invention relates to a kind of methods of safety and stability prevention and control decision, belong to electric power system dispatching operation control technology
Field.
Background technique
Safety and stability prevention and control refer to for safety and stability problem present in power grid under forecast failure and in anticipation event
The control taken power grid before barrier occurs, safety and stability prevention and control decision and targeted operation of power networks state and is defendd
Both forecast failure collections be closely related.Existing online preventive control Optimal Decision-making technology is directed to power grid and currently runs shape
State, since control decision calculating needs the regular hour, after the result of decision to be controlled obtains, power grid has actually been run to newly
Operating status.If directly taking power grid the operation shape for having become history relative to current time under new operating status
Control decision under state is as a result, there is presently no technologies can judge that this control method is that " controlling excessively " still " deficient to control " can
It can not be ensured by property.
Under normal conditions, plan in real time includes multiple time intervals (such as 5 minutes) equal operation section, is periodically
(such as 5 minutes) are refreshed.If directly by existing online preventive control Study on Decision-making Method for Optimization by anticipatory analysis in real time based on
The operation section at first moment in drawing, as long as the calculating time of prevention and control Optimal Decision-making is less than in real time, each operation is disconnected in the works
Time interval between face is then also able to achieve before first moment planned in real time and has just obtained the real-time plan operation
The prevention and control Optimal Decision-making of section.But there is limitation in terms of real-time in this decision-making technique, it can only be for plan in real time
Operation section, be limited by decision-making period plan in real time it is each operation section between time interval, even if decision calculate the time very
It is short, less than the time interval planned between each operation section in real time, it also can not change decision calculating cycle.
Summary of the invention
For the operation of power networks moment corresponding to the existing online preventive control result of decision earlier than the power grid current time of running,
Its reliability is difficult to the deficiency ensured, considers that the power system security planned in real time stablizes prevention and control the present invention provides a kind of
Rolling decision method, at the time of so that the operation of power networks moment corresponding to control decision result is later than acquisition control decision result,
Improve the reliability of control decision result.
The principle of the present invention are as follows: in the case where throwing in equipment/stop state and do not change, based on power grid current data and most
The operation data of equipment, obtains equipment at current time and reality using curve matching in close historical data and real-time planning data
When plan the moment between the following time of running equipment operation data, for power grid current data and real-time planning data
The inconsistent situation of state is thrown/stopped to middle equipment, throws/stops influence of the state change to security margin according to equipment and set to determine
The throwing of the equipment of the standby following time of running between current time and plan moment in real time stops state.Speed is calculated by improving
Degree, it will be able to earlier than the operation of power networks moment corresponding to control decision result at the time of ensuring to obtain control decision result, really
It realizes and the prevention and control decision of the following operating status is calculated.
The method of the present invention specifically comprises the following steps:
1) by current time t0Power grid in equipment throwing/stop state and its operation information, as power grid in t0The fortune at moment
Row profile data is saved in historical data base, and is based on t0The operation of power networks profile data at moment, for t0The anticipation event at moment
Barrier collection F0Safety and stability evaluation is carried out, if F0In have security margin be less than setting value forecast failure, then by F0Middle safety is steady
The set for determining nargin less than the forecast failure of the setting value is denoted as Fc, enter step 2), otherwise, by security margin by it is small to
Big sequence is by F0Middle sequence is denoted as F in the set of max [1, int (λ × n)] a forecast failure of antepositionc, enter step 2)；
Above equipment includes primary equipment and secondary device；
Above-mentioned max is the function for taking maximum value in the two, and int is bracket function, λ be greater than the 0, setup parameter less than 1,
N is F0In forecast failure number；
2) (t is no earlier than at the time of selection from the real-time planning data of power grid corresponding to operation profile data0+ T) and away from (t0+
T) nearest real-time plan runs profile data, is denoted as t at the time of by corresponding to the real-time plan operation profile datas, enter
Step 3)；
Wherein, relative to t at the time of T is corresponding to the following operation profile data for Rolling decision0Duration setting
Value；
If 3) [ts-(t0+ T)] be less than setting duration, then by tsThe power grid at moment plans to run in real time profile data as most
Whole (t0+ T) moment operation of power networks profile data, enter step 8), otherwise, by t0The operation of power networks profile data at moment is made
For initial (t0+ T) moment operation of power networks profile data, enter step 4)；
4) based on initial (t0+ T) moment operation of power networks profile data, for wherein each primary equipment, secondary set
Back-up does not carry out the following processing, obtains in (t0+ T) moment power grid in primary equipment, secondary device throwing/stop state, generate
(the t after state setting is thrown/stopped to equipment0+ T) moment operation of power networks profile data, enter step 5)；
If equipment is in t0Throwing in the operation of power networks profile data at moment/stop state in tsThe real-time plan at moment is run
State consistency is thrown/stopped in profile data, then by equipment in initial (t0+ T) moment operation of power networks profile data in throwing/stop
State is set as it in t0Throwing in the operation of power networks profile data at moment/stop state；Otherwise, for secondary device, then by it
In initial (t0+ T) moment operation of power networks profile data in throw/stop state and be set as stoppage in transit state；For primary equipment, then
Based in t0It is changed on the basis of the operation of power networks profile data at moment throws/stop the operation of power networks section number obtained after state
According to for FcSafety and stability evaluation is carried out, safety is steady before and after calculating the throwing of primary equipment/stop Status Change by formula (1)
The overall target Δ η of nargin variation is determined, if Δ η is greater than 0, by primary equipment in initial (t0+ T) moment operation of power networks it is disconnected
Throwing in face data/stop state is set as it in t0Throwing in the operation of power networks profile data at moment/stop state, otherwise, by one
Secondary device is in initial (t0+ T) moment operation of power networks profile data in throwing/stop state and be set as it in tsMoment it is real-time
Plan operation profile data in throwing/stop state；
In formula, m FcIn forecast failure number, ηiWith η 'iRespectively it is based on t0One in the operation of power networks profile data at moment
F under operation of power networks state before and after the throwing of secondary device/stop Status ChangecIn i-th of forecast failure security margin, a is
Setting value greater than 1；
If 5) have in historical data base except t0Operation of power networks profile data except moment, then choose from historical data base
Away from t at the time of operation corresponding to section0Nearest history run profile data, when by corresponding to the history run profile data
It engraves as th, enter step 6), otherwise, enter step 7)；
6) (the t after state setting is thrown/stopped respectively for equipment0+ T) moment operation of power networks profile data in the hair that puts into operation
Motor, load and converter station, based on it in thHistory run profile data, the t at moment0The current operation profile data at moment and
tsIt is active and idle in the real-time plan operation profile data at moment, using conic fitting method respectively to the active of its
With idle carry out interpolation calculation, it is obtained in (t0+ T) moment operation of power networks profile data in it is active and idle；
(the t after state setting is thrown/stopped respectively for equipment0+ T) moment operation of power networks profile data in the mother that puts into operation
Line, if bus is in thHistory run profile data, the t at moment0The current operation profile data and t at momentsThe real-time plan at moment
It all puts into operation in operation profile data, then based on bus in thMoment, t0Moment and tsIn 3 operation profile datas at moment
Voltage, using conic fitting method to its voltage carry out interpolation calculation, obtain it in (t0+ T) moment operation of power networks
Voltage in profile data；If bus is only in thHistory run profile data, the t at moment0The current operation profile data at moment and
tsIt puts into operation in two operation profile datas in the real-time plan operation profile data at moment, then based on bus at the two
The voltage in profile data is run, interpolation calculation is carried out to its voltage using linear fit method, obtains it in (t0+ T) moment
Operation of power networks profile data in voltage；If bus is only in thHistory run profile data, the t at moment0The current operation at moment
Profile data and tsIt puts into operation in an operation profile data in the real-time plan operation profile data at moment, then by bus
Voltage in the operation profile data is as it in (t0+ T) moment operation of power networks profile data in voltage；
(the t after state setting is thrown/stopped based on equipment0+ T) moment operation of power networks profile data, the hair that will wherein put into operation
Motor, load and converter station it is active and idle, its for being arranged via that above-mentioned processing obtains is in (t0+ T) moment power grid fortune
It is active and idle in row profile data, by the voltage of the bus wherein to put into operation, be arranged via that above-mentioned processing obtains its
(t0+ T) moment operation of power networks profile data in voltage, as final (t0+ T) moment operation of power networks profile data, into
Enter step 8)；
7) (the t after state setting is thrown/stopped respectively for equipment0+ T) moment operation of power networks profile data in the hair that puts into operation
Motor, load and converter station, based on it in t0The current operation profile data and t at momentsThe real-time plan at moment runs section number
It is active and idle in, using linear fit method respectively to its active and idle carry out interpolation calculation, it is obtained in (t0
+ T) moment operation of power networks profile data in it is active and idle；
(the t after state setting is thrown/stopped respectively for equipment0+ T) moment operation of power networks profile data in the mother that puts into operation
Line, if bus is in t0The current operation profile data and t at momentsIt all puts into operation in the real-time plan operation profile data at moment,
Then based on bus in t0Moment and tsVoltage in two operation profile datas at moment, using linear fit method to its voltage
Interpolation calculation is carried out, obtains it in (t0+ T) moment operation of power networks profile data in voltage；If bus is only in t0Moment works as
Preceding operation profile data and tsIt puts into operation in an operation profile data in the real-time plan operation profile data at moment, then
Using voltage of the bus in the operation profile data as it in (t0+ T) moment operation of power networks profile data in voltage；
(the t after state setting is thrown/stopped based on equipment0+ T) moment operation of power networks profile data, the hair that will wherein put into operation
Motor, load and converter station it is active and idle, its for being arranged via that above-mentioned processing obtains is in (t0+ T) moment power grid fortune
It is active and idle in row profile data, by the voltage of the bus wherein to put into operation, be arranged via that above-mentioned processing obtains its
(t0+ T) moment operation of power networks profile data in voltage, as final (t0+ T) moment operation of power networks profile data, into
Enter step 8)；
8) based on final (t0+ T) moment operation of power networks profile data, for (t0+ T) moment forecast failure collection Ft
Safety and stability evaluation is carried out, is entered step 9)；
If 9) FtIn all forecast failures security margin in minimum value less than power network safety operation requirement
Nargin threshold value ηcr, then based on final (t0+ T) moment operation of power networks profile data, meter and FtIn all forecast failures
Security margin in minimum value be more than or equal to ηcrConstraint condition, carry out safety and stability prevention and control Optimal Decision-making meter
Calculate, prevention and control Optimal Decision-making calculated result submitted into management and running controllers, return step 1), otherwise, return step
1)。
Further, the value range of the security margin in step 1) is [- 1,1], is equal to 0, expression is criticality safety
Stable；Greater than 0, expression is safety and stability；Less than 0, expression loses safety and stability；Numerical value is bigger, indicates that safety is steady
It is higher to determine degree.
Further, to measure the setting value of security margin in step 1), preferably 0.2.
The present invention by using safety and stability conservatism, estimate by history, current and real-time planning data based on power grid
Following operating status of the power grid between current time and plan moment in real time, realizes the prevention to power grid future operating status
It controls Rolling decision to calculate, so that the time of running in future of power grid corresponding to control decision result, which is later than, obtains control decision result
At the time of, to improve the reliability of control decision result, it is suitable for the fast-changing need of modern power network safety and stability characteristic
It asks.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention step 1- step 4.
Fig. 2 is the flow chart of the method for the present invention step 5- step 9.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and examples.
The flow chart of the present embodiment is as shown in Figure 1 and Figure 2, step 1: by current time t0Power grid in equipment throwing/stop shape
State and its operation information, as power grid in t0The operation profile data at moment is saved in historical data base, and is based on t0Moment
Operation of power networks profile data, for t0The forecast failure collection F at moment0Safety and stability evaluation is carried out, if F0In have security margin
Less than the forecast failure of setting value (usually may be configured as 0.2), then by F0Middle security margin is less than the anticipation of the setting value
The set of failure is denoted as Fc, 2 are entered step, otherwise, by the ascending sequence of security margin by F0Middle sequence is in anteposition
The set of max [1, int (λ × n)] a forecast failure is denoted as Fc, enter step 2；Max is the function for taking maximum value in the two,
Int is bracket function, and λ is the setup parameter (usually may be configured as 0.05) greater than 0, less than 1, n F0In forecast failure number；
Step 2: being no earlier than (t at the time of selection corresponding to operation profile data from the real-time planning data of power grid0+ T) and
Away from (t0+ T) nearest real-time plan operation profile data, t is denoted as at the time of which is run corresponding to profile datas,
Enter step 3；Wherein, relative to t at the time of T is corresponding to the following operation profile data for Rolling decision0Duration set
Definite value (usually may be configured as 3 minutes)；
Step 3: if [ts-(t0+ T)] be less than setting duration (usually may be configured as 1 minute), then by tsThe power grid at moment is real
When plan operation profile data as finally (t0+ T) moment operation of power networks profile data, 8 are entered step, otherwise, by t0When
The operation of power networks profile data at quarter is as initial (t0+ T) moment operation of power networks profile data, enter step 4；
Step 4: based on initial (t0+ T) moment operation of power networks profile data, for wherein each primary equipment, two
Secondary device carries out the following processing respectively, obtains in (t0+ T) moment power grid in primary equipment, secondary device throwing/stop state,
(the t after state setting is thrown/stopped to generating device0+ T) moment operation of power networks profile data, enter step 5；
If equipment is in t0Throwing in the operation of power networks profile data at moment/stop state in tsThe real-time plan at moment is run
State consistency is thrown/stopped in profile data, then by equipment in initial (t0+ T) moment operation of power networks profile data in throwing/stop
State is set as it in t0Throwing in the operation of power networks profile data at moment/stop state；Otherwise, for secondary device, then by it
In initial (t0+ T) moment operation of power networks profile data in throw/stop state and be set as stoppage in transit state；For primary equipment, then
Based in t0It is changed on the basis of the operation of power networks profile data at moment throws/stop the operation of power networks section number obtained after state
According to for FcSafety and stability evaluation is carried out, safety is steady before and after calculating the throwing of primary equipment/stop Status Change by formula (1)
The overall target △ η of nargin variation is determined, if △ η is greater than 0, by primary equipment in initial (t0+ T) moment operation of power networks it is disconnected
Throwing in face data/stop state is set as it in t0Throwing in the operation of power networks profile data at moment/stop state, otherwise, by one
Secondary device is in initial (t0+ T) moment operation of power networks profile data in throwing/stop state and be set as it in tsMoment it is real-time
Plan operation profile data in throwing/stop state；
In formula, m FcIn forecast failure number, ηiWith η 'iRespectively it is based on t0One in the operation of power networks profile data at moment
F under operation of power networks state before and after the throwing of secondary device/stop Status ChangecIn i-th of forecast failure security margin, a is
Setting value (usually may be configured as 2) greater than 1；
Step 5: if having in historical data base except t0Operation of power networks profile data except moment, then from historical data base
Away from t at the time of selection corresponding to operation section0Nearest history run profile data, will be corresponding to the history run profile data
At the time of be denoted as th, 6 are entered step, otherwise, enters step 7；
Step 6: throwing/stop respectively (the t after state setting for equipment0+ T) moment operation of power networks profile data in put into operation
Generator, load and converter station, based on its in thHistory run profile data, the t at moment0The current operation section number at moment
According to and tsIt is active and idle in the real-time plan operation profile data at moment, using conic fitting method respectively to its
Active and idle carry out interpolation calculation, obtains it in (t0+ T) moment operation of power networks profile data in it is active and idle；
(the t after state setting is thrown/stopped respectively for equipment0+ T) moment operation of power networks profile data in the mother that puts into operation
Line, if bus is in thHistory run profile data, the t at moment0The current operation profile data and t at momentsThe real-time plan at moment
It all puts into operation in operation profile data, then based on bus in thMoment, t0Moment and tsIn 3 operation profile datas at moment
Voltage, using conic fitting method to its voltage carry out interpolation calculation, obtain it in (t0+ T) moment operation of power networks
Voltage in profile data；If bus is only in thHistory run profile data, the t at moment0The current operation profile data at moment and
tsIt puts into operation in two operation profile datas in the real-time plan operation profile data at moment, then based on bus at the two
The voltage in profile data is run, interpolation calculation is carried out to its voltage using linear fit method, obtains it in (t0+ T) moment
Operation of power networks profile data in voltage；If bus is only in thHistory run profile data, the t at moment0The current operation at moment
Profile data and tsIt puts into operation in an operation profile data in the real-time plan operation profile data at moment, then by bus
Voltage in the operation profile data is as it in (t0+ T) moment operation of power networks profile data in voltage；
(the t after state setting is thrown/stopped based on equipment0+ T) moment operation of power networks profile data, the hair that will wherein put into operation
Motor, load and converter station it is active and idle, its for being arranged via that above-mentioned processing obtains is in (t0+ T) moment power grid fortune
It is active and idle in row profile data, by the voltage of the bus wherein to put into operation, be arranged via that above-mentioned processing obtains its
(t0+ T) moment operation of power networks profile data in voltage, as final (t0+ T) moment operation of power networks profile data, into
Enter step 8；
Step 7: throwing/stop respectively (the t after state setting for equipment0+ T) moment operation of power networks profile data in put into operation
Generator, load and converter station, based on its in t0The current operation profile data and t at momentsThe real-time plan operation at moment is disconnected
It is active and idle in face data, using linear fit method respectively to its active and idle carry out interpolation calculation, obtain it
In (t0+ T) moment operation of power networks profile data in it is active and idle；
(the t after state setting is thrown/stopped respectively for equipment0+ T) moment operation of power networks profile data in the mother that puts into operation
Line, if bus is in t0The current operation profile data and t at momentsIt all puts into operation in the real-time plan operation profile data at moment,
Then based on bus in t0Moment and tsVoltage in two operation profile datas at moment, using linear fit method to its voltage
Interpolation calculation is carried out, obtains it in (t0+ T) moment operation of power networks profile data in voltage；If bus is only in t0Moment works as
Preceding operation profile data and tsIt puts into operation in an operation profile data in the real-time plan operation profile data at moment, then
Using voltage of the bus in the operation profile data as it in (t0+ T) moment operation of power networks profile data in voltage；
(the t after state setting is thrown/stopped based on equipment0+ T) moment operation of power networks profile data, the hair that will wherein put into operation
Motor, load and converter station it is active and idle, its for being arranged via that above-mentioned processing obtains is in (t0+ T) moment power grid fortune
It is active and idle in row profile data, by the voltage of the bus wherein to put into operation, be arranged via that above-mentioned processing obtains its
(t0+ T) moment operation of power networks profile data in voltage, as final (t0+ T) moment operation of power networks profile data, into
Enter step 8；
Step 8: based on final (t0+ T) moment operation of power networks profile data, for (t0+ T) moment forecast failure
Collect FtSafety and stability evaluation is carried out, enters step 9；
Step 9: if FtIn all forecast failures security margin in minimum value be less than power network safety operation
It is required that nargin threshold value ηcr(usually may be configured as 0.05), then based on final (t0+ T) moment operation of power networks section number
According to meter and FtIn all forecast failures security margin in minimum value be more than or equal to ηcrConstraint condition, carry out safety
Stablize prevention and control Optimal Decision-making to calculate, prevention and control Optimal Decision-making calculated result is submitted into management and running controllers, is returned
Return step 1；Otherwise, return step 1).
The present invention is not limited to the above embodiments, all are belonged to using the technical solution that equivalent replacement or equivalence replacement are formed
The scope of protection of present invention.
Claims (6)
1. a kind of consider that the power system security planned in real time stablizes prevention and control Rolling decision method, which is characterized in that including
Following steps:
1) by current time t0Power grid in equipment throwing/stop state and its operation information, as power grid in t0The operation at moment is disconnected
Face data is saved in historical data base, and is based on the t0The operation of power networks profile data at moment, for t0The anticipation event at moment
Barrier collection F0Carry out safety and stability evaluation: if F0In have security margin be less than setting value forecast failure, then by F0Middle safety is steady
The set for determining nargin less than the forecast failure of the setting value is denoted as Fc, enter step 2), otherwise, by security margin by it is small to
Big sequence is by F0Middle sequence is denoted as F in the set of max [1, int (λ × n)] a forecast failure of antepositionc, enter step 2)；
Above-mentioned max is the function for taking maximum value in the two, and int is bracket function, and λ is greater than the 0, setup parameter less than 1, n F0
In forecast failure number；
2) t is no earlier than at the time of selection from the real-time planning data of power grid corresponding to operation profile data0+ T and away from t0+ T is nearest
The profile data of plan operation in real time is denoted as t at the time of by corresponding to the real-time plan operation profile datas, enter step 3)；
If 3) ts-(t0+ T) be less than setting duration, then by tsThe power grid at moment plans to run in real time profile data as final t0+
8) the operation of power networks profile data at T moment, enters step, otherwise, by t0The operation of power networks profile data at moment is as initial t0
4) the operation of power networks profile data at+T moment, enters step；
4) based on initial t0The operation of power networks profile data at+T moment carries out wherein each primary equipment, secondary device respectively
State setting is thrown/stops, the t after state setting is thrown/stopped to generating device05) the operation of power networks profile data at+T moment, enters step；
If 5) have in historical data base except t0Operation of power networks profile data except moment then chooses operation from historical data base
Away from t at the time of corresponding to section0Nearest history run profile data is remembered at the time of by corresponding to the history run profile data
For th, enter step 6), otherwise, enter step 7)；
6) t after state setting is thrown/stopped respectively for equipment0It is the generator that puts into operation in the operation of power networks profile data at+T moment, negative
Lotus, converter station and bus, based on power grid in thHistory run profile data, the t at moment0The current operation profile data at moment and
tsActive and reactive and bus the voltage of generator, load and converter station in the real-time plan operation profile data at moment, point
Other active and reactive and bus the voltage to generator, load and converter station carries out interpolation calculation, obtains generator, load
With converter station in t0Active and reactive and bus in the operation of power networks profile data at+T moment is in t0The operation of power networks at+T moment
Voltage in profile data；
The t after state setting is thrown/stopped to the equipment obtained after above-mentioned interpolation calculation0The operation of power networks profile data at+T moment,
As final t08) the operation of power networks profile data at+T moment, enters step；
7) t after state setting is thrown/stopped respectively for equipment0It is the generator that puts into operation in the operation of power networks profile data at+T moment, negative
Lotus, converter station and bus, based on power grid in t0The current operation profile data and t at momentsThe real-time plan at moment runs section number
According to active and reactive and bus the voltage of middle generator, load and converter station, respectively to generator, load and converter station
Active and reactive and bus voltage carries out interpolation calculation, obtains generator, load and converter station in t0The power grid at+T moment is transported
Active and reactive and bus in row profile data is in t0Voltage in the operation of power networks profile data at+T moment；
The t after state setting is thrown/stopped to the equipment obtained after above-mentioned interpolation calculation0The operation of power networks profile data at+T moment,
As final t08) the operation of power networks profile data at+T moment, enters step；
8) based on final t0The operation of power networks profile data at+T moment, for t0The forecast failure collection F at+T momenttCarry out safety
9) Stability Assessment enters step；
If 9) FtIn all forecast failures security margin in minimum value be less than power network safety operation require nargin
Threshold value ηcr, then based on final t0The operation of power networks profile data at+T moment, meter and FtIn all forecast failures safety it is steady
The minimum value determined in nargin is more than or equal to ηcrConstraint condition, carry out safety and stability prevention and control Optimal Decision-making calculate, will prevent
Control Optimal Decision-making calculated result submits to management and running controllers, return step 1)；Otherwise, return step 1).
2. according to the method described in claim 1, it is characterized in that, setting primary equipment, secondary device in the step 4)
Throw/stop the detailed process of state are as follows:
If equipment is in t0Throwing in the operation of power networks profile data at moment/stop state in tsThe real-time plan at moment runs section
State consistency is thrown/stopped in data, then by equipment in initial t0Throwing in the operation of power networks profile data at+T moment/stop state is set
It is set in t0Throwing in the operation of power networks profile data at moment/stop state；Otherwise, for secondary device, then by it initial
T0State is thrown/stopped in the operation of power networks profile data at+T moment be set as stoppage in transit state；For primary equipment, then based in t0
It is changed on the basis of the operation of power networks profile data at moment and throws/stop the operation of power networks profile data obtained after state, for Fc
Safety and stability evaluation is carried out, security margin changes before and after calculating the throwing of primary equipment/stop Status Change by formula (1)
Overall target Δ η, if Δ η be greater than 0, by primary equipment in initial t0In the operation of power networks profile data at+T moment
It throws/stops state and be set as it in t0Throwing in the operation of power networks profile data at moment/stop state, otherwise, by primary equipment first
The t of beginning0Throwing in the operation of power networks profile data at+T moment/stop state is set as it in tsThe real-time plan at moment runs section
Throwing in data/stop state；
In formula, m FcIn forecast failure number, ηiWith η 'iRespectively it is based on t0It is once set in the operation of power networks profile data at moment
F under operation of power networks state before and after standby throwing/stop Status ChangecIn i-th of forecast failure security margin, a be greater than 1
Setting value.
3. method according to claim 1 or 2, characterized in that carry out interpolation meter to the voltage of bus in the step 6)
The process of calculation are as follows:
If bus is in thHistory run profile data, the t at moment0The current operation profile data and t at momentsThe real-time meter at moment
It rows and all puts into operation in row profile data, then based on bus in thMoment, t0Moment and ts3 operation profile datas at moment
In voltage, using conic fitting method to its voltage carry out interpolation calculation, obtain it in t0The operation of power networks at+T moment
Voltage in profile data；If bus is only in thHistory run profile data, the t at moment0The current operation profile data at moment and
tsIt puts into operation in two operation profile datas in the real-time plan operation profile data at moment, then based on bus at the two
The voltage in profile data is run, interpolation calculation is carried out to its voltage using linear fit method, obtains it in t0+ T the moment
Voltage in operation of power networks profile data；If bus is only in thHistory run profile data, the t at moment0The current operation at moment is disconnected
Face data and tsIt puts into operation, then bus exists in an operation profile data in the real-time plan operation profile data at moment
Voltage in the operation profile data is as it in t0Voltage in the operation of power networks profile data at+T moment.
4. method according to claim 1 or 2, characterized in that carry out interpolation meter to the voltage of bus in the step 7)
The process of calculation are as follows:
If bus is in t0The current operation profile data and t at momentsIt all puts into operation in the real-time plan operation profile data at moment
, then based on bus in t0Moment and tsVoltage in two operation profile datas at moment, using linear fit method to its electricity
It is pressed into row interpolation calculating, obtains it in t0Voltage in the operation of power networks profile data at+T moment；If bus is only in t0Moment works as
Preceding operation profile data and tsIt puts into operation in an operation profile data in the real-time plan operation profile data at moment, then
Using voltage of the bus in the operation profile data as it in t0Voltage in the operation of power networks profile data at+T moment.
5. according to the method described in claim 1, it is characterized in that, the value range of the security margin in the step 1) is
[- 1,1] is equal to 0, and expression is that criticality safety is stable；Greater than 0, expression is safety and stability；Less than 0, expression is to lose safety
Stable.
6. according to the method described in claim 1, it is characterized in that, setting value in the step 1) is 0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220603.7A CN105139075B (en) | 2015-05-04 | 2015-05-04 | Consider that the power system security planned in real time stablizes prevention and control Rolling decision method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220603.7A CN105139075B (en) | 2015-05-04 | 2015-05-04 | Consider that the power system security planned in real time stablizes prevention and control Rolling decision method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105139075A CN105139075A (en) | 2015-12-09 |
| CN105139075B true CN105139075B (en) | 2019-07-05 |
Family
ID=54724417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510220603.7A Active CN105139075B (en) | 2015-05-04 | 2015-05-04 | Consider that the power system security planned in real time stablizes prevention and control Rolling decision method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105139075B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447154B (en) * | 2016-06-30 | 2019-11-05 | 国电南瑞科技股份有限公司 | Count and adjust successional operation plan safety and stability aid decision-making method |
| CN110351143A (en) * | 2019-07-17 | 2019-10-18 | 广东电网有限责任公司 | A kind of electric power communication resource management system, method, apparatus and readable storage medium storing program for executing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347613A (en) * | 2011-09-21 | 2012-02-08 | 国网电力科学研究院 | Method for automatically selecting on-line strategy and off-line strategy of transient security and stability emergency control of electrical power system |
| CN102638041A (en) * | 2012-04-17 | 2012-08-15 | 国网电力科学研究院 | Method forquickly checking safety and stability of scheduling operation of power system on line |
-
2015
- 2015-05-04 CN CN201510220603.7A patent/CN105139075B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347613A (en) * | 2011-09-21 | 2012-02-08 | 国网电力科学研究院 | Method for automatically selecting on-line strategy and off-line strategy of transient security and stability emergency control of electrical power system |
| CN102638041A (en) * | 2012-04-17 | 2012-08-15 | 国网电力科学研究院 | Method forquickly checking safety and stability of scheduling operation of power system on line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105139075A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105141029B (en) | Power system security stablizes adaptive emergency control system and method | |
| CN105894133B (en) | Wind turbine component maintenance and spare part demand forecasting method | |
| CN105046395B (en) | Method for compiling day-by-day rolling plan of power system containing multiple types of new energy | |
| EP3024110B1 (en) | System and method for improved regulation of power grids | |
| CA2908965C (en) | Multi-farm wind power generation system | |
| CN103746408B (en) | Large-scale wind power AGC control method for coordinating | |
| CN104820868B (en) | A kind of scheduling methods of exhibiting being predicted based on wind-powered electricity generation probability | |
| CN102930344A (en) | Method for forecasting ultra-short term bus load based on load trend changes | |
| CN101232182A (en) | Three-dimensional coordinated electric network energy managing system and method for controlling and evaluating electric network | |
| CN101271544B (en) | Prediction method of generatrix load in electric network | |
| CN104899798B (en) | A kind of transient state risk control method for the wind power integration system considering spinning reserve | |
| AU2021106780A4 (en) | Virtual power plant self-optimisation load track control method | |
| CN104821581A (en) | Optimum day-ahead reserve capacity determination method | |
| CN105139075B (en) | Consider that the power system security planned in real time stablizes prevention and control Rolling decision method | |
| Wehenkel et al. | Preventive vs. emergency control of power systems | |
| CN105162173B (en) | It is a kind of access wind-power electricity generation electric system spare capacity determine method | |
| Zelensky et al. | Development of a distributed multi-agent system monitoring and control networks of 0.4–35 kV | |
| CN106329515B (en) | A kind of horizontal determination method of electric network reliability based on static reliability probability level | |
| CN104809543A (en) | Power grid operation mode generating method based on monthly power transmission and distribution equipment maintenance plan | |
| Bento et al. | Analysis of the load growth direction variation in the dynamic security assessment | |
| Cai et al. | Intra-day Tie-line Scheduling Model Considering New Energy Fluctuation | |
| Kang et al. | Ultra-short-term wind power prediction and its application in early-warning system of power systems security and stability | |
| Attya | Integrating battery banks to wind farms for frequency support provision–capacity sizing and support algorithms | |
| CN103825301B (en) | A kind of unified interface modeling method of distributed energy access active distribution system | |
| Bento et al. | Computing the worst case scenario for electric power system dynamic security assessment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |