CN109873454A - The appraisal procedure and device of machine group voltage support ability in a kind of receiving end power grid - Google Patents
The appraisal procedure and device of machine group voltage support ability in a kind of receiving end power grid Download PDFInfo
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Abstract
The present invention provides the appraisal procedures and device of machine group voltage support ability in a kind of receiving end power grid, first determine the booting strategy of machine group in receiving end power grid, and the method for operation of the corresponding receiving end power grid of machine group booting strategy is arranged；Then the percentage of receiving end power grid maximum supply load incrementss opposite booting capacity when the lower based model for load duration of booting strategy increases disturbance is calculated；Finally assessment booting strategy, and machine group voltage support ability is assessed, it solves the problems, such as that separate unit generator voltage enabling capabilities can only be assessed, not adapt to assess machine group by being based on single machine model in the past, provides reference for reasonable booting strategy of formulating.And the principle of the invention is simple, operability and practical, it is contemplated that influence of many factors such as machine set type, position, capacity, reactive power regulation performance to voltage support ability, obtained assessment result is accurately and securely.
Description
Technical field
The present invention relates to power system security stabilization technique fields, and in particular to machine group voltage branch in a kind of receiving end power grid
The appraisal procedure and device of support ability.
Background technique
The contrary distribution feature of China's energy resources and load center on geographical location determines that there are two class weights in China
The power grid wanted: it undertakes large-scale Energy Base electric power and sends the sending end power grid of task and the receiving end electricity for the power supply of load center outside
Net.For the safety and reliability for guaranteeing customer power supply, the grid structure of China's receiving end power grid is constantly reinforced and is optimized, with
For Beijing Power Network, the grid structure of 500kV dual-ring network has been formd at present, and has divided several power supply zones, each confession
Electric subregion by more 500kV main transformers from major network by electricity, without direct electrical link between each power supply zone, to limit short-circuit electricity
Power flow transfer after stream and failure.
To guarantee that receiving end power network safety operation, different power supply zones have different electric power generator group accesses, provide to negative
The power supply on the spot of lotus supports.Under the constraint of Environmental Factors, the generating set requirement " going coalification " of subregion is accessed, combustion is used uniformly
Gas combined cycle unit, including " one-to-one " and " two drag one " two types, wherein " one-to-one " refers to, a set of unit includes 1
Platform Gas Generator Set and 1 Steam Turbine, share 2 generators, and " two drag one " refers to, a set of unit includes 2 Gas Generator Sets and 1
Platform Steam Turbine shares 3 generators.For accessing the voltage support capability evaluation of receiving end grid generator, it is currently based upon
From generator set end voltage is fallen after excitation system response intensity, rapidity and duration angle examine, due to
Based on single machine model, the machine group that can not be constituted to more generators is assessed.
Summary of the invention
In order to overcome it is above-mentioned in the prior art based on single machine model can not the voltage support ability to machine group assess
Defect, the present invention provides the appraisal procedure and device of machine group voltage support ability in a kind of receiving end power grid, first determines receiving end
The booting strategy of machine group in power grid, and the method for operation of the corresponding receiving end power grid of machine group booting strategy is set；Then basis
The method of operation of the corresponding receiving end power grid of machine group booting strategy calculates receiving end power grid when the lower based model for load duration of booting strategy increases disturbance
The percentage of the opposite booting capacity of maximum supply load incrementss；Finally increased according to based model for load duration under the booting strategy of machine group
The percentage assessment booting strategy of the opposite booting capacity of receiving end power grid maximum supply load incrementss when disturbance, and according to machine group
Booting strategy realize the assessment of machine group voltage support ability constituted to more generators, and solve previous based on single machine mould
Type can only assess separate unit generator voltage enabling capabilities, not adapt to the problem of assessing machine group, formulate booting to be reasonable
Strategy provides reference.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that:
On the one hand, the present invention provides a kind of appraisal procedure of machine group voltage support ability in receiving end power grid, comprising:
It determines the booting strategy of machine group in receiving end power grid, and the fortune of the corresponding receiving end power grid of machine group booting strategy is set
Line mode；
The tactful lower based model for load duration growth of booting is calculated according to the method for operation of the corresponding receiving end power grid of machine group booting strategy to disturb
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when dynamic；
Receiving end power grid maximum supply load incrementss phase when increasing disturbance according to based model for load duration under the booting strategy of machine group
It is switched on to the percentage assessment of booting capacity tactful, and determines the voltage support energy of machine group according to the booting strategy of machine group
Power.
Further, in the determining receiving end power grid before the booting strategy of machine group, comprising:
According to the initial launch mode of following principles setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure is cut off by the main protection of element when any element failure, it is described by
Hold power grid not unstability；
According to initial launch mode, and according to following processes obtain under initial launch mode when based model for load duration increases disturbance by
Hold the maximum supply load of power grid:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when based model for load duration increases disturbance under initial launch mode；The load increases
Rate is set as the 1%-5% for increasing initial load each second.
Further, in the determining receiving end power grid machine group booting strategy, comprising:
There are unit booting, and the minimum principle of booting number of units of subregion with each subregion in receiving end power grid, utilizes the method for exhaustion
Determine the booting strategy of machine group in receiving end power grid.
Further, the minimum booting number of units of the subregion determines in the following manner:
1) there is only gas Combined Cycle Units in subregion, and the minimum booting number of units of subregion is 2；
2) there are the units except gas Combined Cycle Unit in subregion, and the minimum booting number of units of subregion is 1；
3) unit is not installed, the minimum booting number of units of subregion is 0 in subregion.
Further, the method for operation of the corresponding receiving end power grid of the setting machine group booting strategy, comprising:
It is adjusted based on the booting in power supply zone with initial launch mode of the balancing the load Adjustment principle to receiving end power grid
It is whole, form the method for operation in the corresponding receiving end power grid of machine group booting strategy；
The unit that booting in the power supply zone includes: the lower operation of setting booting strategy with balancing the load Adjustment principle goes out
Power is nominal output, and increases the load of operating unit place power supply zone, guarantees that subregion is constant by electrical power from major network.
Further, negative under the method for operation calculating booting strategy of the tactful corresponding receiving end power grid that is switched on according to machine group
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when lotus sustainable growth disturbs, comprising:
Determine that the maximum of receiving end power grid is supplied when based model for load duration increases disturbance under the booting strategy of machine group according to following processes
Electric load:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when the lower based model for load duration of booting strategy increases disturbance；The load is advanced the speed
It is set as the 1%-5% for increasing initial load each second；
The maximum supply load of receiving end power grid when increasing disturbance according to the lower based model for load duration of the booting strategy of machine group, and press
Receiving end power grid maximum supply load incrementss are opposite when based model for load duration increases disturbance under the booting strategy of formula calculating machine group is switched on
The percentage of capacity:
Wherein, ηiIndicate that receiving end power grid maximum is powered when the lower based model for load duration of i-th of booting strategy of machine group increases disturbance
The percentage of the opposite booting capacity of load incrementss；Indicate booting capacity,Indicate i-th of booting strategy of machine group
The nominal output of lower jth platform unit, N indicate the unit number of units in machine group；ΔPiUnder i-th of booting strategy for indicating machine group
Receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance, and Δ Pi=Pi-P0, P0Indicate initial launch mode
The maximum supply load of receiving end power grid, P when lower based model for load duration increases disturbanceiIndicate the lower load of i-th of booting strategy of machine group
The maximum supply load of receiving end power grid when sustainable growth disturbs.
Further, receiving end power grid maximum is powered when based model for load duration increases disturbance under the booting strategy according to machine group
The percentage assessment booting strategy of the opposite booting capacity of load incrementss, and machine group is determined according to the booting strategy of machine group
Voltage support ability, comprising:
Compare receiving end power grid maximum supply load when based model for load duration increases disturbance under each booting strategy of machine group to increase
The percentage of the opposite booting capacity of amount, the booting strategy of the corresponding machine group of largest percentage are that optimal booting is tactful, it is described most
The tactful corresponding machine group of excellent booting has strongest voltage support ability.
On the other hand, the present invention also provides a kind of assessment devices of machine group voltage support ability in receiving end power grid, special
Sign is, comprising:
For determining the booting strategy of machine group in receiving end power grid, and machine group booting strategy is arranged in first determining module
The method of operation of corresponding receiving end power grid；
Computing module, for negative under the method for operation calculating booting strategy of tactful corresponding receiving end power grid that is switched on according to machine group
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when lotus sustainable growth disturbs；
Evaluation module, receiving end power grid maximum is powered when increasing disturbance for based model for load duration under the booting strategy according to machine group
The percentage assessment booting strategy of the opposite booting capacity of load incrementss, and machine group is determined according to the booting strategy of machine group
Voltage support ability.
Further comprise:
Setup module, for the initial launch mode according to following principles setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure is cut off by the main protection of element when any element failure, it is described by
Hold power grid not unstability；
Second determining module, for obtaining bearing under initial launch mode according to initial launch mode, and according to following processes
The maximum supply load of receiving end power grid when lotus sustainable growth disturbs:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when based model for load duration increases disturbance under initial launch mode；The load increases
Rate is set as the 1%-5% for increasing initial load each second.
First determining module includes:
Be switched on policy determining unit, for having unit booting, and the booting number of units of subregion with each subregion in receiving end power grid
Minimum principle determines the booting strategy of machine group in receiving end power grid using the method for exhaustion.
The booting policy determining unit is specifically used for:
The minimum booting number of units of subregion is determined in the following manner:
1) there is only gas Combined Cycle Units in subregion, and the minimum booting number of units of subregion is 2；
3) there are the units except gas Combined Cycle Unit in subregion, and the minimum booting number of units of subregion is 1；
3) unit is not installed, the minimum booting number of units of subregion is 0 in subregion.
First determining module includes:
Adjustment unit, for based in power supply zone booting and balancing the load Adjustment principle to the initial fortune of receiving end power grid
Line mode is adjusted, and forms the method for operation in the corresponding receiving end power grid of machine group booting strategy；
Booting in power supply zone includes: that the lower unit output run of setting booting strategy is with balancing the load Adjustment principle
Nominal output, and increase the load of operating unit place power supply zone, guarantee that subregion is constant by electrical power from major network.
The computing module includes:
Determination unit, receiving end when based model for load duration increases disturbance under the booting strategy for determining machine group according to following processes
The maximum supply load of power grid:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when the lower based model for load duration of booting strategy increases disturbance；The load is advanced the speed
It is set as the 1%-5% for increasing initial load each second；
Computing unit, the maximum of receiving end power grid supplies when increasing disturbance for the lower based model for load duration of booting strategy according to machine group
Electric load, and receiving end power grid maximum supply load when based model for load duration increases disturbance under the booting strategy of machine group is calculated as follows and increases
The percentage of the opposite booting capacity of dosage:
Wherein, ηiIndicate that receiving end power grid maximum is powered when the lower based model for load duration of i-th of booting strategy of machine group increases disturbance
The percentage of the opposite booting capacity of load incrementss；Indicate booting capacity,Indicate i-th of booting strategy of machine group
The nominal output of lower jth platform unit, N indicate the unit number of units in machine group；ΔPiUnder i-th of booting strategy for indicating machine group
Receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance, and Δ Pi=Pi-P0, P0Indicate initial launch mode
The maximum supply load of receiving end power grid, P when lower based model for load duration increases disturbanceiIndicate the lower load of i-th of booting strategy of machine group
The maximum supply load of receiving end power grid when sustainable growth disturbs.
The evaluation module is specifically used for:
Compare receiving end power grid maximum supply load when based model for load duration increases disturbance under each booting strategy of machine group to increase
The percentage of the opposite booting capacity of amount, the booting strategy of the corresponding machine group of largest percentage are that optimal booting is tactful, it is described most
The tactful corresponding machine group of excellent booting has strongest voltage support ability.
Compared with the immediate prior art, technical solution provided by the invention is had the advantages that
In receiving end power grid provided by the invention in the appraisal procedure of machine group voltage support ability, first determine in receiving end power grid
The booting strategy of machine group, and the method for operation of the corresponding receiving end power grid of machine group booting strategy is set；Then according to machine group
The method of operation of the corresponding receiving end power grid of booting strategy calculates receiving end power grid maximum when the lower based model for load duration of booting strategy increases disturbance and supplies
The percentage of the opposite booting capacity of electric load incrementss；When finally increasing disturbance according to based model for load duration under the booting strategy of machine group
The percentage assessment booting strategy of the opposite booting capacity of receiving end power grid maximum supply load incrementss, and according to the booting of machine group
Strategy realizes the assessment of the machine group voltage support ability constituted to more generators, and solving in the past could only based on single machine model
Assessment separate unit generator voltage enabling capabilities do not adapt to the problem of assessing machine group, mention for reasonable booting strategy of formulating
For reference；
The assessment device of machine group voltage support ability includes the first determining module, meter in receiving end power grid provided by the invention
It calculates module and evaluation module, the first determining module therein for determining the booting strategy of machine group in receiving end power grid, and is arranged
The method of operation of the corresponding receiving end power grid of machine group booting strategy, computing module therein, for calculating the lower load of booting strategy
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when sustainable growth disturbs；Evaluation module therein,
The machine group voltage support energy constituted to more generators is realized for assessing booting strategy, and according to the booting strategy of machine group
The assessment of power solves to be assessed separate unit generator voltage enabling capabilities based on single machine model in the past, not adapted to machine group
The problem of assessment, provides reference for reasonable booting strategy of formulating；
The appraisal procedure of machine group voltage support ability is based on the lower load of booting strategy in receiving end power grid provided by the invention
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss determines the optimal of machine group when sustainable growth disturbs
Booting strategy, it is contemplated that many factors such as machine set type, position, capacity, reactive power regulation performance are to voltage support ability
It influences, obtained assessment result is accurately and securely；
The appraisal procedure principle of machine group voltage support ability is simple in receiving end power grid provided by the invention, operability and
It is practical.
Detailed description of the invention
Fig. 1 is the appraisal procedure flow chart of machine group voltage support ability in receiving end power grid in the embodiment of the present invention 1.
Fig. 2 is the subregion and unit distribution schematic diagram of receiving end power grid A in the embodiment of the present invention 2.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provides a kind of appraisal procedure of machine group voltage support ability in receiving end power grid, this method
Specific flow chart as shown in Figure 1, specifically includes the following steps:
S101: determining the booting strategy of machine group in receiving end power grid, and the corresponding receiving end electricity of machine group booting strategy is arranged
The method of operation of net；
S102: the method for operation of the corresponding receiving end power grid of machine group booting strategy obtained according to S101 calculates under booting strategy
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance；
S103: receiving end power grid maximum supplies when increasing disturbance according to based model for load duration under the booting strategy of the obtained machine group of S102
The percentage assessment booting strategy of the opposite booting capacity of electric load incrementss, and machine group is determined according to the booting strategy of machine group
Voltage support ability.
Further, operations described below can be carried out before the booting strategy of machine group in the determination receiving end power grid of S101:
1, according to the initial launch mode of following principles setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure, receiving end electricity are cut off by the main protection of element when any element failure
Net not unstability；
2, according to initial launch mode, and when obtaining under initial launch mode based model for load duration according to following processes and increasing disturbance
The maximum supply load of receiving end power grid:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when based model for load duration increases disturbance under initial launch mode；Load is advanced the speed
It is set as the 1%-5% for increasing initial load each second.
Above-mentioned S101 specifically includes following procedure:
1, the booting strategy of machine group in receiving end power grid is determined, detailed process is as follows:
There are unit booting, and the minimum principle of booting number of units of subregion with each subregion in receiving end power grid, utilizes the method for exhaustion
Determine the booting strategy of machine group in receiving end power grid.
The minimum booting number of units of subregion therein determines in the following manner:
1) there is only gas Combined Cycle Units in subregion, and the minimum booting number of units of subregion is 2；
2) there are the units except gas Combined Cycle Unit in subregion, and the minimum booting number of units of subregion is 1；
3) unit is not installed, the minimum booting number of units of subregion is 0 in subregion.
2, the method for operation of the corresponding receiving end power grid of setting machine group booting strategy, detailed process is as follows:
It is adjusted based on the booting in power supply zone with initial launch mode of the balancing the load Adjustment principle to receiving end power grid
It is whole, form the method for operation in the corresponding receiving end power grid of machine group booting strategy；
Booting in power supply zone includes: that the lower unit output run of setting booting strategy is with balancing the load Adjustment principle
Nominal output, and increase the load of operating unit place power supply zone, guarantee that subregion is constant by electrical power from major network.
In above-mentioned S102, load under the method for operation calculating booting strategy of tactful corresponding receiving end power grid that is switched on according to machine group
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when sustainable growth disturbs, detailed process is as follows:
1, the maximum of receiving end power grid when based model for load duration increases disturbance under the booting strategy of machine group is determined according to following processes
Supply load:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when the lower based model for load duration of booting strategy increases disturbance；Load is advanced the speed setting
Increase the 1%-5% of initial load for each second；
2, the maximum supply load of receiving end power grid when increasing disturbance according to the lower based model for load duration of the booting strategy of machine group, and press
Receiving end power grid maximum supply load incrementss are opposite when based model for load duration increases disturbance under the booting strategy of following formula calculating machine group opens
The percentage of machine capacity:
Wherein, ηiIndicate that receiving end power grid maximum is powered when the lower based model for load duration of i-th of booting strategy of machine group increases disturbance
The percentage of the opposite booting capacity of load incrementss；Indicate booting capacity,Indicate i-th of booting strategy of machine group
The nominal output of lower jth platform unit, N indicate the unit number of units in machine group；ΔPiUnder i-th of booting strategy for indicating machine group
Receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance, and Δ Pi=Pi-P0, P0Indicate initial launch mode
The maximum supply load of receiving end power grid, P when lower based model for load duration increases disturbanceiIndicate the lower load of i-th of booting strategy of machine group
The maximum supply load of receiving end power grid when sustainable growth disturbs.
In above-mentioned S103, receiving end power grid maximum is powered negative when increasing disturbance according to based model for load duration under the booting strategy of machine group
The percentage assessment booting of the opposite booting capacity of lotus incrementss is tactful, and the electricity of machine group is determined according to the booting strategy of machine group
Enabling capabilities are pressed, detailed process is as follows:
Compare receiving end power grid maximum supply load when based model for load duration increases disturbance under each booting strategy of machine group to increase
The percentage of the opposite booting capacity of amount, the booting strategy of the corresponding machine group of largest percentage is optimal booting strategy, optimal to open
The corresponding machine group of machine strategy has strongest voltage support ability.
Based on the same inventive concept, the embodiment of the present invention 1 additionally provides machine group voltage support energy in a kind of receiving end power grid
The assessment device of power, the appraisal procedure phase of the principle that these equipment solve the problems, such as and machine group voltage support ability in receiving end power grid
Seemingly, the embodiment of the present invention 1 provide receiving end power grid in machine group voltage support ability assessment device include the first determining module,
Computing module and evaluation module introduce the concrete function of these modules separately below:
First determining module therein for determining the booting strategy of machine group in receiving end power grid, and is arranged machine group and opens
The method of operation of the corresponding receiving end power grid of machine strategy；
Computing module therein, for calculating booting plan according to the method for operation of the corresponding receiving end power grid of machine group booting strategy
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when based model for load duration slightly being descended to increase disturbance；
Evaluation module therein, most for receiving end power grid when based model for load duration growth disturbs under the booting strategy according to machine group
The percentage assessment booting strategy of big supply load incrementss booting capacity relatively, and machine is determined according to the booting strategy of machine group
The voltage support ability of group.
The assessment device of machine group voltage support ability in the receiving end power grid that the embodiment of the present invention 1 provides further include:
Setup module, for the initial launch mode according to following principles setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure, receiving end electricity are cut off by the main protection of element when any element failure
Net not unstability；
Second determining module, for obtaining bearing under initial launch mode according to initial launch mode, and according to following processes
The maximum supply load of receiving end power grid when lotus sustainable growth disturbs:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when based model for load duration increases disturbance under initial launch mode；Load is advanced the speed
It is set as the 1%-5% for increasing initial load each second.
The first above-mentioned determining module includes booting policy determining unit and adjustment unit, specific as follows:
1, be switched on policy determining unit, for having unit booting, and the booting platform of subregion with each subregion in receiving end power grid
The minimum principle of number, the booting strategy of machine group in receiving end power grid is determined using the method for exhaustion；
The minimum booting number of units of above-mentioned subregion determines in the following manner:
1) there is only gas Combined Cycle Units in subregion, and the minimum booting number of units of subregion is 2；
4) there are the units except gas Combined Cycle Unit in subregion, and the minimum booting number of units of subregion is 1；
3) unit is not installed, the minimum booting number of units of subregion is 0 in subregion.
2, adjustment unit, for based on the booting in power supply zone with balancing the load Adjustment principle to the initial of receiving end power grid
The method of operation is adjusted, and forms the method for operation in the corresponding receiving end power grid of machine group booting strategy；
Booting in power supply zone includes: that the lower unit output run of setting booting strategy is with balancing the load Adjustment principle
Nominal output, and increase the load of operating unit place power supply zone, guarantee that subregion is constant by electrical power from major network.
Above-mentioned computing module includes determination unit and computing unit, specific as follows:
1, determination unit, when based model for load duration increases disturbance under the booting strategy for determining machine group according to following processes by
Hold the maximum supply load of power grid:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is imitative by electric system time domain
True software obtains the maximum supply load of receiving end power grid when the lower based model for load duration of booting strategy increases disturbance；Load is advanced the speed setting
Increase the 1%-5% of initial load for each second；
2, computing unit, the maximum of receiving end power grid when increasing disturbance for the lower based model for load duration of booting strategy according to machine group
Supply load, and receiving end power grid maximum supply load when based model for load duration increases disturbance under the booting strategy of machine group is calculated as follows
The percentage of the opposite booting capacity of incrementss:
Wherein, ηiIndicate that receiving end power grid maximum is powered when the lower based model for load duration of i-th of booting strategy of machine group increases disturbance
The percentage of the opposite booting capacity of load incrementss；Indicate booting capacity,Under i-th of booting strategy for indicating machine group
The nominal output of jth platform unit, N indicate the unit number of units in machine group；ΔPiIndicate that i-th of booting strategy of machine group is lower negative
Receiving end power grid maximum supply load incrementss when lotus sustainable growth disturbs, and Δ Pi=Pi-P0, P0It indicates under initial launch mode
The maximum supply load of receiving end power grid, P when based model for load duration increases disturbanceiIndicate that the lower load of i-th of booting strategy of machine group is held
The continuous maximum supply load for increasing receiving end power grid when disturbing.
Receiving end power grid maximum supplies when above-mentioned evaluation module increases disturbance according to based model for load duration under the booting strategy of machine group
The percentage assessment booting strategy of the opposite booting capacity of electric load incrementss, and machine group is determined according to the booting strategy of machine group
Voltage support ability, detailed process is as follows:
Compare receiving end power grid maximum supply load when based model for load duration increases disturbance under each booting strategy of machine group to increase
The percentage of the opposite booting capacity of amount, the booting strategy of the corresponding machine group of largest percentage is optimal booting strategy, optimal to open
The corresponding machine group of machine strategy has strongest voltage support ability.
Embodiment 2
The subregion and unit distribution schematic diagram of receiving end power grid A are as shown in Fig. 2, receiving end power grid A has 2 power supply zones totally 6
Platform machine, subregion Z1 have 1 set of " one-to-one " Gas Generator Set, totally 2 generators, are denoted as the Z1-A-1 machine and Z1-A-2 machine of Z1-A set；
Subregion Z2 has 2 sets of " one-to-one " Gas Generator Sets, is denoted as the Z2-A-1 machine and Z2-A-2 machine of Z2-A set respectively；The Z2-B-1 of Z2-B set
Machine and Z2-B-2 machine.The rated capacity of every machine is 150MW in two subregions.For above-mentioned receiving end power grid A, the present invention is implemented
Example 2 provide receiving end power grid A in machine group voltage support ability appraisal procedure specifically includes the following steps:
1, the initial launch mode of receiving end power grid is set, and load under initial launch mode is determined according to initial launch mode
The maximum supply load of receiving end power grid when sustainable growth disturbs.
Wherein, detailed process is as follows for the initial launch mode of setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure is cut off by the main protection of element when any element failure, it is described by
Hold power grid not unstability.
Wherein, receiving end power grid is most when determining under initial launch mode that based model for load duration increases disturbance according to initial launch mode
Big supply load includes:
The load that each subregion in receiving end power grid is arranged advances the speed that (load, which is advanced the speed, is set as per second by identical load
Clock increases the 1% of initial load) increase, based model for load duration under initial launch mode is obtained by Power System Time Domain Simulation Under software and is increased
The maximum supply load P of receiving end power grid when long disturbance0=5000MW.
2, it determines the booting strategy of machine group in receiving end power grid, and the corresponding receiving end power grid of machine group booting strategy is set
The method of operation.
Wherein it is determined that in receiving end power grid machine group booting strategy, comprising:
There are unit booting, and the minimum principle of booting number of units of subregion with each subregion in receiving end power grid, utilizes the method for exhaustion
Determine the booting strategy of machine group in receiving end power grid.2 receiving end power grid of the embodiment of the present invention has 2 kinds of booting strategies, 2 power supply zones
Minimum booting number of units be 2.The booting of booting strategy 1: Z1-A-1 machine, Z1-A-2 machine, Z2-A-1 machine and Z2-A-2 machine；It opens
The booting of machine strategy 2: Z1-A-1 machine, Z1-A-2 machine, Z2-B-1 machine and Z2-B-2 machine.
Wherein, the method for operation of the corresponding receiving end power grid of setting machine group booting strategy, comprising:
It is adjusted based on the booting in power supply zone with initial launch mode of the balancing the load Adjustment principle to receiving end power grid
It is whole, form the method for operation in the corresponding receiving end power grid of machine group booting strategy；
Booting in power supply zone includes: that the lower unit output run of setting booting strategy is with balancing the load Adjustment principle
Nominal output 150MW, and increase the load of operating unit place power supply zone, guarantee that subregion is constant by electrical power from major network.
3, the tactful lower based model for load duration of booting is calculated according to the method for operation of the corresponding receiving end power grid of machine group booting strategy to increase
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss when disturbance.
Specifically includes the following steps:
(1) the maximum power supply for calculating receiving end power grid when based model for load duration increases disturbance under the 1st booting strategy of machine group is born
Lotus P1For 5500MW；
(2) the lower based model for load duration of the 1st booting strategy for calculating machine group increases maximum supply load incrementss Δ when disturbing
P1, Δ P1=P1-P0=500MW；
(3) the lower based model for load duration of the 1st booting strategy for calculating machine group increases receiving end power grid maximum supply load when disturbing
The percentage of the opposite booting capacity of incrementssWhereinFor the lower jth platform of the 1st booting strategy of machine group
The nominal output of unit, then η1=83.3%；
The step of front 3 is executed to the 2nd booting strategy of receiving end power grid respectively, corresponding based model for load duration is obtained and increases disturbance
The opposite volume percent that is switched on of maximum supply load incrementss, there is Δ P2=P2-P0=450MW, η2=75%；
(4) compare receiving end power grid maximum supply load when based model for load duration increases disturbance under each booting strategy of machine group to increase
The booting strategy of the percentage of the opposite booting capacity of dosage, the corresponding machine group of largest percentage is optimal booting strategy, most
Excellent booting strategy has strongest voltage support ability, and the strategy 1 that can must then be switched on is better than booting strategy 2.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field can still modify to a specific embodiment of the invention referring to above-described embodiment or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (14)
1. the appraisal procedure of machine group voltage support ability in a kind of receiving end power grid characterized by comprising
It determines the booting strategy of machine group in receiving end power grid, and the operation side of the corresponding receiving end power grid of machine group booting strategy is set
Formula；
When the tactful lower based model for load duration growth of the method for operation calculating booting for corresponding to receiving end power grid according to machine group booting strategy disturbs
The percentage of the opposite booting capacity of receiving end power grid maximum supply load incrementss；
Receiving end power grid maximum supply load incrementss are opposite when increasing disturbance according to based model for load duration under the booting strategy of machine group opens
The percentage assessment booting strategy of machine capacity, and according to the tactful voltage support ability for determining machine group of the booting of machine group.
2. the appraisal procedure of machine group voltage support ability in receiving end power grid according to claim 1, which is characterized in that institute
It states in determining receiving end power grid before the booting strategy of machine group, comprising:
According to the initial launch mode of following principles setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure, the receiving end electricity are cut off by the main protection of element when any element failure
Net not unstability；
Receiving end electricity when based model for load duration increases disturbance is obtained under initial launch mode according to initial launch mode, and according to following processes
The maximum supply load of net:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is soft by Power System Time Domain Simulation Under
Part obtains the maximum supply load of receiving end power grid when based model for load duration increases disturbance under initial launch mode；The load is advanced the speed
It is set as the 1%-5% for increasing initial load each second.
3. the appraisal procedure of machine group voltage support ability in receiving end power grid according to claim 1, which is characterized in that institute
State the booting strategy of machine group in determining receiving end power grid, comprising:
There are unit booting, and the minimum principle of booting number of units of subregion with each subregion in receiving end power grid, is determined using the method for exhaustion
The booting strategy of machine group in receiving end power grid.
4. the appraisal procedure of machine group voltage support ability in receiving end power grid according to claim 3, which is characterized in that institute
The minimum booting number of units for stating subregion determines in the following manner:
1) there is only gas Combined Cycle Units in subregion, and the minimum booting number of units of subregion is 2；
2) there are the units except gas Combined Cycle Unit in subregion, and the minimum booting number of units of subregion is 1；
3) unit is not installed, the minimum booting number of units of subregion is 0 in subregion.
5. the appraisal procedure of machine group voltage support ability in receiving end power grid according to claim 1, which is characterized in that institute
State the method for operation of the corresponding receiving end power grid of setting machine group booting strategy, comprising:
It is adjusted based on the booting in power supply zone with initial launch mode of the balancing the load Adjustment principle to receiving end power grid, shape
At the method for operation in the corresponding receiving end power grid of machine group booting strategy:
Booting in the power supply zone includes: that the lower unit output run of setting booting strategy is with balancing the load Adjustment principle
Nominal output, and increase the load of operating unit place power supply zone, guarantee that subregion is constant by electrical power from major network.
6. the appraisal procedure of machine group voltage support ability in receiving end power grid according to claim 1, which is characterized in that institute
State according to machine group be switched on the corresponding receiving end power grid of strategy the method for operation calculate when the lower based model for load duration of booting strategy increases disturbance by
Hold the percentage of the opposite booting capacity of power grid maximum supply load incrementss, comprising:
Determine that the maximum power supply of receiving end power grid when based model for load duration increases disturbance under the booting strategy of machine group is born according to following processes
Lotus:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is soft by Power System Time Domain Simulation Under
Part obtains the maximum supply load of receiving end power grid when the lower based model for load duration of booting strategy increases disturbance；The load is advanced the speed setting
Increase the 1%-5% of initial load for each second；
The maximum supply load of receiving end power grid when increasing disturbance according to the lower based model for load duration of the booting strategy of machine group, and count as the following formula
Calculate the opposite capacity that is switched on of receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance under the booting strategy of machine group
Percentage:
Wherein, ηiIndicate that receiving end power grid maximum supply load increases when the lower based model for load duration of i-th of booting strategy of machine group increases disturbance
The percentage of the opposite booting capacity of dosage；Indicate booting capacity,Indicate the lower jth platform of i-th of booting strategy of machine group
The nominal output of unit, N indicate the unit number of units in machine group；ΔPiIndicate that the lower load of i-th of booting strategy of machine group is held
It is continuous to increase receiving end power grid maximum supply load incrementss when disturbing, and Δ Pi=Pi-P0, P0Indicate load under initial launch mode
The maximum supply load of receiving end power grid, P when sustainable growth disturbsiIndicate that the lower based model for load duration of i-th of booting strategy of machine group increases
The maximum supply load of receiving end power grid when long disturbance.
7. the appraisal procedure of machine group voltage support ability in receiving end power grid according to claim 1, which is characterized in that institute
State the opposite booting of receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance under the booting strategy according to machine group
The percentage assessment booting strategy of capacity, and according to the tactful voltage support ability for determining machine group of the booting of machine group, comprising:
Compare receiving end power grid maximum supply load incrementss phase when based model for load duration increases disturbance under each booting strategy of machine group
To the percentage of booting capacity, the booting strategy of the corresponding machine group of largest percentage is that optimal booting is tactful, described optimal to open
The corresponding machine group of machine strategy has strongest voltage support ability.
8. the assessment device of machine group voltage support ability in a kind of receiving end power grid characterized by comprising
First determining module, for determining the booting strategy of machine group in receiving end power grid, and it is corresponding that machine group booting strategy is arranged
Receiving end power grid the method for operation；
Computing module is held for load under the method for operation calculating booting strategy of tactful corresponding receiving end power grid that is switched on according to machine group
The continuous percentage for increasing the opposite booting capacity of receiving end power grid maximum supply load incrementss when disturbing；
Evaluation module, receiving end power grid maximum supply load when increasing disturbance for based model for load duration under the booting strategy according to machine group
The percentage assessment booting of the opposite booting capacity of incrementss is tactful, and the voltage of machine group is determined according to the booting strategy of machine group
Enabling capabilities.
9. the assessment device of machine group voltage support ability in receiving end power grid according to claim 8, which is characterized in that into
One step includes:
Setup module, for the initial launch mode according to following principles setting receiving end power grid:
Receiving end power grid zero is arranged to be switched on, and failure, the receiving end electricity are cut off by the main protection of element when any element failure
Net not unstability；
Second determining module is used for according to initial launch mode, and obtains load under initial launch mode according to following processes and hold
The continuous maximum supply load for increasing receiving end power grid when disturbing:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is soft by Power System Time Domain Simulation Under
Part obtains the maximum supply load of receiving end power grid when based model for load duration increases disturbance under initial launch mode；The load is advanced the speed
It is set as the 1%-5% for increasing initial load each second.
10. the assessment device of machine group voltage support ability in receiving end power grid according to claim 8, which is characterized in that
First determining module includes:
Be switched on policy determining unit, and for having unit booting with each subregion in receiving end power grid, and the booting number of units of subregion is minimum
For principle, the booting strategy of machine group in receiving end power grid is determined using the method for exhaustion.
11. the assessment device of machine group voltage support ability in receiving end power grid according to claim 10, which is characterized in that
The booting policy determining unit is specifically used for:
The minimum booting number of units of subregion is determined in the following manner:
1) there is only gas Combined Cycle Units in subregion, and the minimum booting number of units of subregion is 2；
2) there are the units except gas Combined Cycle Unit in subregion, and the minimum booting number of units of subregion is 1；
3) unit is not installed, the minimum booting number of units of subregion is 0 in subregion.
12. the assessment device of machine group voltage support ability in receiving end power grid according to claim 8, which is characterized in that
First determining module includes:
Adjustment unit, for based in power supply zone booting and balancing the load Adjustment principle to the initial launch side of receiving end power grid
Formula is adjusted, and forms the method for operation in the corresponding receiving end power grid of machine group booting strategy；
Booting in the power supply zone includes: that the lower unit output run of setting booting strategy is with balancing the load Adjustment principle
Nominal output, and increase the load of operating unit place power supply zone, guarantee that subregion is constant by electrical power from major network.
13. the assessment device of machine group voltage support ability in receiving end power grid according to claim 8, which is characterized in that
The computing module includes:
Determination unit, receiving end power grid when based model for load duration increases disturbance under the booting strategy for determining machine group according to following processes
Maximum supply load:
The load of each subregion in receiving end power grid is arranged to advance the speed increase by identical load, it is soft by Power System Time Domain Simulation Under
Part obtains the maximum supply load of receiving end power grid when the lower based model for load duration of booting strategy increases disturbance；The load is advanced the speed setting
Increase the 1%-5% of initial load for each second；
Computing unit, the maximum power supply of receiving end power grid is negative when increasing disturbance for the lower based model for load duration of booting strategy according to machine group
Lotus, and receiving end power grid maximum supply load incrementss when based model for load duration increases disturbance under the booting strategy of machine group are calculated as follows
The percentage of opposite booting capacity:
Wherein, ηiIndicate that receiving end power grid maximum supply load increases when the lower based model for load duration of i-th of booting strategy of machine group increases disturbance
The percentage of the opposite booting capacity of dosage；Indicate booting capacity,Indicate the lower jth platform of i-th of booting strategy of machine group
The nominal output of unit, N indicate the unit number of units in machine group；ΔPiIndicate that the lower load of i-th of booting strategy of machine group is held
It is continuous to increase receiving end power grid maximum supply load incrementss when disturbing, and Δ Pi=Pi-P0, P0Indicate load under initial launch mode
The maximum supply load of receiving end power grid, P when sustainable growth disturbsiIndicate that the lower based model for load duration of i-th of booting strategy of machine group increases
The maximum supply load of receiving end power grid when long disturbance.
14. the assessment device of machine group voltage support ability in receiving end power grid according to claim 8, which is characterized in that
The evaluation module is specifically used for:
Compare receiving end power grid maximum supply load incrementss phase when based model for load duration increases disturbance under each booting strategy of machine group
To the percentage of booting capacity, the booting strategy of the corresponding machine group of largest percentage is that optimal booting is tactful, described optimal to open
The corresponding machine group of machine strategy has strongest voltage support ability.
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