CN104331751B - The power grid emergency DC power support method of more hydroenergy storage station collaborations - Google Patents
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Abstract
The present invention provides a kind of power grid emergency DC power support method of more hydroenergy storage station collaborations, including：The startup of Emergency Assistance：According to main website be issued to power station Emergency Assistance start preparation instruction, the startup of Emergency Assistance is realized in Emergency Assistance enabled instruction and Emergency Assistance target power order；The execution of Emergency Assistance：Power station group control system carries out Unit Commitment and Load Regulation according to load plan curve and the Emergency Assistance target power；Emergency Assistance exits：Main website issues Emergency Assistance and starts exit instruction to power station, and power station carries out Unit Commitment and spatial load forecasting, and when Emergency Assistance target power reduces to 0, main website issues Emergency Assistance and completes exit instruction, completes whole Emergency Assistance process.The present invention, using hydroenergy storage station locality control function in groups, realizes that pump, full hair and automatic opening generating set function are cut in a distant place automatically, there is provided Emergency Assistance power, realizes the recovery of mains frequency using the emergency duty ability of multiple hydroenergy storage stations.
Description
Technical field
The present invention relates to electric power system dispatching operation and control technology field, especially a kind of more hydroenergy storage station collaborations
Power grid em ergency power support control method.
Background technology
With the development of technology of transmission of electricity, the construction of extra-high voltage grid, the large-scale receiving end power grid in region by being returned direct current spy more
High-tension line is entered high-power electric, and the ability to transmit electricity of wall scroll transmission line of electricity is increasing so that the operating structure of power grid is increasingly
Complexity, the risk of safe and stable operation also constantly increase.One of the important signs that of the mains frequency as power grid operation, how
In regional power grid by under big power deletion condition, emergency DC power support is quickly provided, realizes frequency retrieval, and then avoids sending out
Raw large area power grid cascading accident, ensures the operation of power grid high-quality stable, and the receiving end regional power grid control centre for becoming big faces
Important operation challenge.
It is general to use the unit spinning reserve capacity increased in net and match somebody with somebody in order to strengthen receiving end mains frequency stability contorting
The means of frequency loadshedding equipment are set low, increase the spinning reserve of unit, it is necessary to larger operating cost, reduce the power generation effect of power plant
Rate；And the second defence line that Load Shedding According To Frequency is power grid, even more need larger economy, social cost.
Hydroenergy storage station be widely used in current electric system, a kind of energy storage technology that capacity is big, it is in power grid
Mainly it is configured to the functions such as peak-clipping and valley-filling, phase modulation, emergency duty and black starting-up.Pump-storage generator has quick response energy
Power, follow load is rapid, adapts to the change dramatically of load, can effectively improve operation of power networks frequency and the stabilization of quality of voltage
Property.In power grid day-to-day operation, hydroenergy storage station is currently used primarily in the peak-clipping and valley-filling of power grid, for as emergency duty,
The general method of operation is when power grid accident occurs, and is issued an order using scheduling artificial, by power station side manually start unit generation or
Cut off work of drawing water.Such working method is, it is necessary to rely on the scheduling experience of control centre, and by multilayer manual intervention, prolong
The recovery time of slow electric network fault and frequency.
Chinese invention patent CN103078326A (the China Power academy of sciences, a kind of raising mains frequency security and stability
Optimization method) it is directed to the emergency duty function of hydroenergy storage station, it is proposed that and when mains frequency is too low, excision operates in electric pump
Hydroenergy storage station unit under pattern, when mains frequency is excessive, the hydroenergy storage station of excision operation in generate mode
Unit, and and then according to mains frequency, the frequency stabilization control of the method progress power grid by adjusting DC line power, to subtract
Few low frequency load shedding, high frequency are made sure to keep in mind, and reduce influence of the electric power system fault to production run and people's lives.
Chinese invention patent CN102629760A (cut by State Network Electric Power Research Institute, the low frequency for being applicable in frequency security stabilization
Pump and off-load coordination optimizing method) give in the case of power grid low frequency, determine hydroenergy storage station according to frequency change rate
Pump is cut, and the frequency stabilization recovery and optimization method combined with low-frequency load shedding item.Realize the fault recovery of frequency.
Not yet find to be directed under more hydroenergy storage station full working scopes, power loss is occurred to power grid, there is provided frequency retrieval
Cooperate with optimal control method.
The content of the invention
It is an object of the invention to provide one kind when power loss occurs for power grid, the optimization distribution side of power support is carried out
Method, and Emergency Assistance power is quickly provided using more hydroenergy storage stations, realize the urgent power branch of the recovery of mains frequency
Help method.
In order to achieve the above object, the present invention provides a kind of power grid emergency DC power support of more hydroenergy storage station collaborations
Method, when monitoring the loss of electric network active rate, there is provided Emergency Assistance, the urgent work(of power grid of more hydroenergy storage station collaborations
Rate support method comprises the following steps：
The startup of Emergency Assistance：The double remote regulating orders of setting, double remote regulating orders include Emergency Assistance target power order
Moved back and pattern conversion command with Emergency Assistance control throwing, the Emergency Assistance control throwing is moved back and pattern conversion command includes urgent branch
Help and start preparation instruction and Emergency Assistance enabled instruction, the Emergency Assistance that each power station is issued to according to main website starts preparation
The startup of Emergency Assistance is realized in instruction, Emergency Assistance enabled instruction and Emergency Assistance target power order；
The execution of Emergency Assistance：By power station group control system according to load plan curve and the Emergency Assistance target
Power carry out power station Unit Commitment and Load Regulation to realize the execution of Emergency Assistance；
Emergency Assistance exits：Main website issues Emergency Assistance and starts exit instruction to power station, power station according to load curve and
Emergency Assistance target power carries out Unit Commitment and spatial load forecasting, and when Emergency Assistance target power reduces to 0, main website issues promptly
Support and complete exit instruction, complete whole Emergency Assistance process.
Further, when monitoring the loss of electric network active rate, meet that wasted power is more than power grid currently adjustable control
Region spinning reserve total amount, and difference is more than a pumped storage capacity minimum in region, the relevant mains frequency of power loss
When not recovering less than failure lower limit, in certain time to the normal frequency lower limit of setting, there is provided Emergency Assistance.
Further, in the startup of the Emergency Assistance, main website issues the Emergency Assistance and starts preparation instruction successively
With Emergency Assistance enabled instruction.
Further, exiting for the Emergency Assistance is carried out under the conditions of power constraint, the power constraint is all ginsengs
It is no more than given threshold with total the sum of power of supporting that the pump-up power station total load curve and plan of Emergency Assistance exit.
Further, carry out exiting for the Emergency Assistance under the constraints of power station, the power station be constrained to for by
In the reduction of Emergency Assistance power and the change of load plan curve so that power station group control system needs to generate electricity to shutdown
Or shut down to pumping operation, and cause the unit number of units that pump was shut down/opened in operation to meet power plant safety operation constraint.
Present invention also offers a kind of more hydroenergy storage station emergency DC power support distribution methods, apply and draw water above-mentioned more
In the power grid emergency DC power support method of storage station's collaboration, in the startup of the Emergency Assistance, according to the storages that draw water more
After energy power station emergency DC power support distribution method completes distribution, double remote regulating orders are reset, and each electricity is issued to according to main website
The Emergency Assistance stood starts preparation instruction, Emergency Assistance enabled instruction and the order of Emergency Assistance target power and realizes urgent branch
The startup helped, more hydroenergy storage station emergency DC power support distribution methods comprise the following steps：
Held according to the single-machine capacity that draws water of any one current plant, power generation single-machine capacity, generating set to the residue completely sent out
Amount and in groups unit number of units obtain the support power in the power station；
First priority, the are included according to power station operating mode and unit operating mode setting distribution priority, the distribution priority
Two priority and third priority, power station distribution power unit operating mode response priority be followed successively by first priority,
Second priority and third priority, first priority are：Power station in pumping operation mode is shut down, described second is preferential
Level be：To the power station in generating operation mode, will completely be sent out in generating operation mode and less than the unit of hair, the third priority is：
To the power station in generating operation mode, if unit is in generating operation mode and has completely sent out, the unit for making other be in shutdown status
Power generation；
For the power station of equal operating mode, the power station Emergency Assistance distribution priority according to setting carries out power distribution；
Using the round power method of salary distribution, i.e., distribute priority, each power station branch of distribution according to the power station Emergency Assistance
Support power capacity of the power less than the power station is helped, each power station first round can be first supported in power capacity in power station, distribution 1
The volumetric power of platform unit, after all participation power stations are assigned, if the power of support still in need, then start the second wheel point
Match somebody with somebody, cycle assignment is until be assigned.
Further, the sum of each power station support power of distribution is less than target support power, and causes its difference most
It is small..
Further, the support power in i-th of power station of distribution is Δ Pi, and
Wherein, i=1,2 ..., N, N be total power stations number,For the single-machine capacity that draws water in i-th of power station,For the power generation single-machine capacity in i-th of power station,Hold for i-th of power station current generator group to the residue completely sent out
Amount, M are the unit number of units in groups in the current power station.
Present invention primarily contemplates the accident for for large area receiving end power grid, making full use of multiple hydroenergy storage stations in net
Marginal capacity, considers electric network swim, the response speed in power station and support ability, carries out the optimization distribution of power support, and
Using hydroenergy storage station locality control function in groups, realize that a distant place cuts pump, full hair and automatically turns on generating set work(automatically
Can, it is quick that Emergency Assistance power is provided, realize the recovery of mains frequency.
Brief description of the drawings
Fig. 1 is the flow of the power grid emergency DC power support method of more hydroenergy storage station collaborations provided in an embodiment of the present invention
Figure；
Fig. 2 is the power dispatch logic schematic diagram of Emergency Assistance provided in an embodiment of the present invention；
Fig. 3 is the logical schematic of the startup of Emergency Assistance provided in an embodiment of the present invention；
Fig. 4 is the flow chart exited of Emergency Assistance provided in an embodiment of the present invention；
Emergency Assistance process schematic when Fig. 5 is power station generating operation mode provided in an embodiment of the present invention；
Emergency Assistance process schematic when Fig. 6 is power station pumping operation mode provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in more detail below in conjunction with schematic diagram.According to description below and
Claims, advantages and features of the invention will become apparent from.It should be noted that attached drawing is using very simplified form and
Using non-accurate ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
More water-storage em ergency power support control systems mainly contain main website side collaboration Optimal Control System and pumping
Electric power storage station side controls support system in groups.Pump-up power station side controls support system in groups to be changed on group control system
Make, can be supported under capacity, power station state and quick response main website to main website of dispatching of power netwoks control centre real-time report with realizing
Distant place Auto Power On/termination of pumping order of hair.The collaboration Optimal Control System work of the main description main website more pump-up power stations in side of the invention
Make principle.
Main website side contains the interactive mode of main website and power station, Emergency Assistance starts monitoring condition, more power station Emergency Assistances
Power distribution method, Emergency Assistance perform flow and Emergency Assistance exits constraint.
In order to ensure distant place Auto Power On or the correct of termination of pumping of drawing water perform, prevent remote regulating mistake from causing power station malfunction,
Main website sets command mode (being the main website and the interactive mode in power station) by double remote regulating and issues Emergency Assistance throwing to power station
Enter, exit instruction.Double remote regulating setting orders are Emergency Assistance target power order Δ P respectivelyTargetAnd Emergency Assistance control throwing move back and
Pattern conversion command, after power station receives correct response command logic, the input of automated execution Emergency Assistance, exit function.
As shown in Figure 1, the present invention provides a kind of power grid emergency DC power support method of more hydroenergy storage stations collaboration,
When monitoring the loss of electric network active rate, there is provided Emergency Assistance, the power grid emergency DC power support of more hydroenergy storage station collaborations
Method (i.e. described Emergency Assistance performs flow) comprises the following steps：
The startup of Emergency Assistance：The double remote regulating orders of setting, double remote regulating orders include Emergency Assistance target power order
Moved back and pattern conversion command with Emergency Assistance control throwing, the Emergency Assistance control throwing is moved back and pattern conversion command includes urgent branch
Help and start preparation instruction and Emergency Assistance enabled instruction, the Emergency Assistance that each power station is issued to according to main website starts preparation
The startup of Emergency Assistance is realized in instruction, Emergency Assistance enabled instruction and Emergency Assistance target power order；
The execution of Emergency Assistance：By power station group control system according to load plan curve and the Emergency Assistance target
Power carry out power station Unit Commitment and Load Regulation to realize the execution of Emergency Assistance；
Emergency Assistance exits：Main website issues Emergency Assistance and starts exit instruction to power station, power station according to load curve and
Emergency Assistance target power carries out Unit Commitment and spatial load forecasting, and when Emergency Assistance target power reduces to 0, main website issues promptly
Support and complete exit instruction, complete whole Emergency Assistance process.
The Emergency Assistance starts monitoring condition：Monitor that power grid has big power loss, and meet wasted power
More than power grid, currently adjustable control area spinning reserve total amount, difference are more than a pumped storage capacity minimum in region；Power
Lose relevant mains frequency and be less than failure lower limit fBad_lmt, the certain time t that persistently setsBad_frequenceDo not recover inside to setting
Fixed normal frequency lower limit fNormal_lmt。
Several planning cycles are set, as shown in Figure 5 and Figure 6 (TeFor the Emergency Assistance actual time started), first
Planning cycle is T0To T1, second planning cycle is T1To T2, and so on.Under normal circumstances, the time of each planning cycle
It is 5 minutes or 15 minutes.The process of Emergency Assistance is completed in a planning cycle or multiple planning cycles, that is, realizing will be tight
It is anxious to support target power order Δ PTargetIt is down to zero.In the present embodiment, the time of each planning cycle is 15 minutes,
The process of Emergency Assistance is completed in three planning cycles.
In addition, as shown in figure 3, in the startup of the Emergency Assistance, the startup of Emergency Assistance is touched by main website control system
Hair, using to power station transmission timing remote regulating logical order, sequencing issues Emergency Assistance and starts preparation instruction and Emergency Assistance
Enabled instruction the two Emergency Assistances control throwing is moved back and pattern conversion remote regulating command value, then, issues the urgent branch to need Backup
Help target power Δ PTargetRemote regulating instructs.After power station order receives above-mentioned remote regulating, according to control logic in groups, make an immediate response, carry out
Automatically machine/termination of pumping is opened, there is provided emergency DC power support.
In the execution of the Emergency Assistance, the execution after Emergency Assistance starts is independently complete by power station group control system
Into before second planning cycle starts to exit, power station group control system is urgent according to the load plan curve combining issued
Target power △ P are supported, carry out the Unit Commitment and Load Regulation in power station.
Emergency Assistance is exited since second planning cycle, and when startup is exited, main website issues Emergency Assistance and starts to exit
Pattern remote regulating instructs, and exits constraint according to Emergency Assistance, in several planning cycles, it is per minute issue calculate it is urgent
Support target power Δ PTargetRemote regulating instructs, and power station group control system is carried out according to load curve and Emergency Assistance target power
Unit Commitment and spatial load forecasting.As Emergency Assistance target power Δ PTargetWhen reducing to 0, main website issues Emergency Assistance and completes to exit mould
Formula remote regulating instructs, and completes whole Emergency Assistance process.
In order to prevent in a planning cycle, due to exiting for Emergency Assistance, power grid is caused to have excessive generating set to stop
Machine or startup are drawn water, and are had a negative impact to system frequency.Exit, constrained for the Emergency Assistance of pump-up power station, institute
Stating Emergency Assistance and exiting to constrain includes power constraint and power station constraint.
Exiting for the Emergency Assistance is carried out under the conditions of power constraint, the power constraint is all participation Emergency Assistances
Pump-up power station total load curve and total the sum of power of supporting for intending exiting be no more than given threshold PThresold。
Exiting for the Emergency Assistance is carried out under the constraints of power station, the power station is constrained to for due to Emergency Assistance
Power reduces and the change of load plan curve so that power station group control system needs to generate electricity to shutdown or shut down extremely
Pumping operation, and cause the unit number of units that pump was shut down/opened in operation to meet power plant safety operation constraint.
As shown in figure 4, the Emergency Assistance that Fig. 4 is given under power constraint and power station constraints exits flow chart, when
When plant load instruction is more than 0 during this sub-distribution, a compressor emergency shutdown is arranged to reduce Δ PTarget, when this sub-distribution, power station is born
When lotus instruction is equal to 0, a unit is arranged to draw water to reduce Δ PTarget, when when this sub-distribution, plant load instruction is less than 0, peace
One unit of row draws water to reduce Δ PTarget。
As shown in Fig. 2, present invention also offers a kind of more hydroenergy storage station emergency DC power support distribution methods are (i.e. described
More power station Emergency Assistance power distribution methods), apply the power grid emergency DC power support in more hydroenergy storage stations collaboration
In method, in the startup of the Emergency Assistance, completed according to more hydroenergy storage station emergency DC power support distribution methods
After distribution, double remote regulating orders are reset, and the Emergency Assistance for being issued to according to main website each power station starts preparation instruction, tight
The startup of Emergency Assistance is realized in anxious support enabled instruction and Emergency Assistance target power order, and more hydroenergy storage stations are urgent
Power is supported distribution method and is comprised the following steps：
Held according to the single-machine capacity that draws water of any one current plant, power generation single-machine capacity, generating set to the residue completely sent out
Amount and in groups unit number of units obtain the support power in the power station；
First priority, the are included according to power station operating mode and unit operating mode setting distribution priority, the distribution priority
Two priority and third priority, power station distribution power unit operating mode response priority be followed successively by first priority,
Second priority and third priority, first priority are：Power station in pumping operation mode is shut down and (drawn water to shutdown),
Second priority is：To the power station in generating operation mode, it will completely send out that (power generation is full in generating operation mode and less than the unit of hair
Hair), the third priority is：To the power station in generating operation mode, if unit is in generating operation mode and has completely sent out, make it
He is in the unit generation (shutting down to power generation) of shutdown status；
For the power station of equal operating mode, the power station Emergency Assistance distribution priority according to setting carries out power distribution；
Using the round power method of salary distribution, i.e., distribute priority, each power station branch of distribution according to the power station Emergency Assistance
Support power capacity of the power less than the power station is helped, each power station first round can be first supported in power capacity in power station, distribution 1
The volumetric power of platform unit, after all participation power stations are assigned, if the power of support still in need, then start the second wheel point
Match somebody with somebody, cycle assignment is until be assigned.By taking 4 power stations as an example, in the first round, according to power station priority, 1 is sequentially allocated to power station
The volumetric power of platform unit.If the first round terminates, 4 units in this 4 power stations also fail to provide enough Emergency Assistance work(
Rate, i.e., the power of support still in need, then start the second wheel distribution.In the second wheel distribution, 4 above have been assigned
Unit do not reallocate, then according to power station priority, power distribution is carried out to unit in power station, if the second wheel does not complete also,
Then and so on, until being assigned.
Each power station of distribution supports the sum of power and is less than target support power Δ PTarget, and make it that its difference is minimum, point
The support power in i-th of the power station matched somebody with somebody is Δ Pi, power Δ P is supported in i-th of power station of distributioniAppearance is supported less than the power station
AmountAnd
Wherein, i=1,2 ..., N, N be total power stations number,For the single-machine capacity that draws water in i-th of power station,For the power generation single-machine capacity in i-th of power station,Hold for i-th of power station current generator group to the residue completely sent out
Amount, M are the unit number of units in groups in the current power station.
To sum up, the present invention provides a kind of when high-power missing occurs for power grid, the automatic administrative multiple pumped storage electricity of quick calling
Stand, carry out distant place start and stop control, Emergency Assistance power, the control method of fast quick-recovery frequency are provided for power grid；Realize more factories
Collaboration of standing optimizes em ergency power support control strategy, i.e., for the administrative multiple pump-up power stations of power grid, the branch different according to power station
Help response time, current operating condition, the features such as capacity can be supported, there is provided multistation cooperates with, and equilibrium is supported, and is jointly power grid
Em ergency power support control is provided, to realize the Collaborative Control of more pump-up power station Emergency Assistances and fast automatic calling；Provide
Multi-level safety checks system, i.e. main website is put into using double remote regulating instruction secure patterns, exited control；And in start-up course,
It is controlled using sequential remote regulating pattern, that is, Emergency Assistance startup must be issued when starting successively and prepare to start this with Emergency Assistance
Two Emergency Assistance control throwings are moved back and pattern conversion remote regulating instruction, after verification confirms, issue Emergency Assistance target power, power station side
Just put into Emergency Assistance control process.
In order to ensure that the safety of remote regulating instruction is assigned, on IEC60870-5-104 protocol basis, real-time school is applied in increase
Function is tested, main station system verifies the power station that foldback is returned and receive remote regulating command value, is compared, if being abnormal, directly in real time
Carry out Emergency Assistance control function and stop locking.
Present invention primarily contemplates the accident for for large area receiving end power grid, making full use of multiple hydroenergy storage stations in net
Marginal capacity, considers electric network swim, the response speed in power station and support ability, carries out the optimization distribution of power support, and
Using hydroenergy storage station locality control function in groups, realize that a distant place cuts pump, full hair and automatically turns on generating set work(automatically
Can, it is quick that Emergency Assistance power is provided, realize the recovery of mains frequency.
The preferred embodiment of the present invention is above are only, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of technical scheme is not departed from, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent substitution or modification, belong to the content without departing from technical scheme, still
Belong within protection scope of the present invention.
Claims (8)
- A kind of 1. power grid emergency DC power support method of more hydroenergy storage stations collaboration, it is characterised in that monitoring that power grid has During power loss, there is provided Emergency Assistance, the power grid emergency DC power support method of more hydroenergy storage station collaborations is including following Step：The startup of Emergency Assistance：The double remote regulating orders of setting, double remote regulating orders are including the order of Emergency Assistance target power and tightly Anxious support control throwing is moved back and pattern conversion command, and the Emergency Assistance control throwing is moved back and pattern conversion command is opened including Emergency Assistance Dynamic preparation instruction and Emergency Assistance enabled instruction, the Emergency Assistance startup preparation that each power station is issued to according to main website refer to Make, the startup of Emergency Assistance is realized in Emergency Assistance enabled instruction and Emergency Assistance target power order；The execution of Emergency Assistance：By power station group control system according to load plan curve and the Emergency Assistance target power Carry out power station Unit Commitment and Load Regulation to realize the execution of Emergency Assistance；Emergency Assistance exits：Main website issues Emergency Assistance and starts exit instruction to power station, and power station is according to load curve and promptly Support target power and carry out Unit Commitment and spatial load forecasting, when Emergency Assistance target power reduces to 0, main website issues Emergency Assistance Exit instruction is completed, completes whole Emergency Assistance process.
- 2. the power grid emergency DC power support method of more hydroenergy storage station collaborations as claimed in claim 1, it is characterised in that When monitoring the loss of electric network active rate, meet that wasted power is more than power grid currently adjustable control area spinning reserve total amount, and And difference is more than a pumped storage capacity minimum in region, the relevant mains frequency of power loss is less than failure lower limit, continues one When not recovering to the normal frequency lower limit of setting in fixing time, there is provided Emergency Assistance.
- 3. the power grid emergency DC power support method of more hydroenergy storage station collaborations as claimed in claim 2, it is characterised in that In the startup of the Emergency Assistance, main website issues the Emergency Assistance and starts preparation instruction and Emergency Assistance enabled instruction successively.
- 4. the power grid emergency DC power support method of more hydroenergy storage station collaborations as claimed in claim 3, it is characterised in that Exiting for the Emergency Assistance is carried out under the conditions of power constraint, the power constraint is all pump-up power stations for participating in Emergency Assistances Total the sum of power of supporting that total load curve and plan exit is no more than given threshold.
- 5. the power grid emergency DC power support method of more hydroenergy storage station collaborations as claimed in claim 4, it is characterised in that Carry out exiting for the Emergency Assistance under the constraints of power station, the power station be constrained to for since Emergency Assistance power is reduced and The change of load plan curve so that power station group control system needs to generate electricity to shutdown or shut down to pumping operation, And the unit number of units that pump was shut down/opened in operation is caused to meet power plant safety operation constraint.
- 6. a kind of more hydroenergy storage station emergency DC power support distribution methods, are applied in such as claim 1-5 any one of them In the power grid emergency DC power support method of more hydroenergy storage station collaborations, it is characterised in that in the startup of the Emergency Assistance, After completing distribution according to the more hydroenergy storage station emergency DC power support distribution methods, double remote regulating orders are reset, and according to The Emergency Assistance that main website is issued to each power station starts preparation instruction, Emergency Assistance enabled instruction and Emergency Assistance target work( The startup of Emergency Assistance is realized in rate order, and more hydroenergy storage station emergency DC power support distribution methods comprise the following steps：According to the single-machine capacity that draws water of any one current plant, power generation single-machine capacity, generating set to the residual capacity completely sent out and Unit number of units obtains the support power in the power station in groups；According to power station operating mode and unit operating mode setting distribution priority, the distribution priority includes the first priority, second excellent First level and third priority, the unit operating mode response priority of power station distribution power are followed successively by first priority, second Priority and third priority, first priority are：Power station in pumping operation mode is shut down, second priority For：To the power station in generating operation mode, will completely be sent out in generating operation mode and less than the unit of hair, the third priority is：It is right Power station in generating operation mode, if unit is in generating operation mode and has completely sent out, makes other be in the unit of shutdown status hair Electricity；For the power station of equal operating mode, the power station Emergency Assistance distribution priority according to setting carries out power distribution；Using the round power method of salary distribution, i.e., priority is distributed according to the power station Emergency Assistance, work(is supported in each power station of distribution Rate is less than the power capacity of supporting in the power station, and each power station first round can be first supported in power capacity in power station, distribute 1 machine The volumetric power of group, after all participation power stations are assigned, if the power of support still in need, then start the distribution of the second wheel, follow Ring distribution is until be assigned.
- 7. more hydroenergy storage station emergency DC power support distribution methods as claimed in claim 6, it is characterised in that distribution it is each A power station supports the sum of power and is less than target support power, and make it that its difference is minimum.
- 8. more hydroenergy storage station emergency DC power support distribution methods as claimed in claim 7, it is characterised in that the of distribution The support power in i power station is Δ Pi, andWherein, i=1,2 ..., N, N be total power stations number,For the single-machine capacity that draws water in i-th of power station,For The power generation single-machine capacity in i-th of power station,It is current for i-th of power station current generator group to the residual capacity completely sent out, M The unit number of units in groups in the power station.
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