CN109768577A - A kind of power station Poewr control method comprising energy storage primary frequency control system - Google Patents
A kind of power station Poewr control method comprising energy storage primary frequency control system Download PDFInfo
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Abstract
A kind of power station Poewr control method comprising energy storage primary frequency control system, includes the following steps；The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy storage primary frequency control system；The energy storage input of energy storage primary frequency control system and the coupling of constant value control system, the present invention optimizes the original active power controller strategy in power station, allow to compatible energy storage primary frequency control system, the various power control regulating systems in power station are avoided to clash in adjustment process, to maximize the power regulation performance for promoting power station.
Description
Technical field
The present invention relates to hydro-generating Unit automatically control and electric power system stability control technical field, in particular to one
Kind includes the power station Poewr control method of energy storage primary frequency control system.
Background technique
The functional module that active power regulation is responsible in power station includes: constant value control system and primary frequency control system, wherein
The former is mainly according to the instruction of scheduling frequency modulation frequency modulation, the variation of plan load curve, operations staff's operational order to power station and unit
Output power is adjusted；The latter is then after mains frequency deviation rated frequency is more than primary frequency modulation threshold, to the defeated of unit
Power is adjusted out, before frequency modulation frequency modulation plays a role, inhibits mains frequency to deviate rated frequency in advance to a certain extent
Amplitude will not be excessive.
Constant value control system includes the AGC module of power station layer, the power closed-loop adjustment module of unit layer, Principles of Regulation
It is 1) AGC module receives the active setting value of whole station of scheduling or power station setting, and 2) the active setting value of whole station is decomposed into each
The active setting value of the single machine of unit, 3) the active setting value of single machine is sent to power of the assembling unit closed loop adjustment module, 4) power of the assembling unit
Closed loop adjustment module is defeated to the single machine of unit according to the active setting value of single machine according to the closed loop feedbacks calculation such as preset PID
Power is adjusted out, and single machine output power is made to be intended to the active setting value of single machine and stablize adjusting in dead zone range.
Primary frequency control system is adjusted unit output power according to mains frequency f, its calculation formula is:In formula (1): gfFor primary frequency modulation target regulated quantity；KfpFor coefficient of frequency modulation,
Reflect that primary frequency modulation target regulated quantity and mains frequency deviate the corresponding relationship between rated frequency degree；GrateFor the specified appearance of unit
Amount；ε is primary frequency modulation threshold, and in most cases, fired power generating unit primary frequency modulation threshold is 0.0333Hz, hydroelectric units primary tune
Frequency threshold is 0.05Hz.
Related with the adjustment mechanism of unit, compared with fired power generating unit, Hydropower Unit shows Hydropower Unit in Set-value adjustment
Preferably, frequency modulation frequency modulation performance is more excellent, and the primary frequency modulation performance of fired power generating unit is then better than water power.Therefore when energy-storage system is applied to fire
When power station, it is commonly used for frequency modulation frequency modulation purpose, when being applied to power station, is then used as primary frequency modulation purpose.
(CN 108321817A) disclose one kind with document one " a kind of meter and the distributed frequency modulation frequency modulation control method of energy storage "
Meter and the distributed frequency modulation frequency modulation control method of energy storage, belong to and are related to the technical field of power generation of electric grid secondary frequency modulation.
Document two " method and device that a kind of energy-storage system participates in the control of one secondary frequencies of power grid " (CN 105633988A) is public
The Sharp criteria of energy storage primary frequency modulation starting and the calculation method of frequency modulation power are opened.
Document three " a kind of short-term power grid frequency modulation control method and system based on energy-storage battery " (CN 108321822A) mentions
The method that energy-storage battery output power is calculated according to frequency shift (FS) curve is gone out, the purpose is to improve energy-storage battery utilization rate and most
Bigization energy storage economic benefit.
Document four " a kind of compressed-air energy storage electric power station system and its control method for primary frequency modulation "
(CN108506056A) a kind of compressed-air energy storage electric power station system and its control method for primary frequency modulation is disclosed.
Document five " a kind of device and method of thermoelectricity joint energy storage response primary frequency modulation and frequency modulation frequency modulation "
(CN108539764A) device and method of a kind of thermoelectricity joint energy storage response primary frequency modulation and frequency modulation frequency modulation is disclosed, but is existed
Railway Project: 1) fitting method of energy-storage system Yu thermoelectricity original power regulating system is not provided；2) several adjusting systems are not provided
It unites the quantitative calculation of respective output power；3) there are the confounding issues of basic definition, such as explain Automatic Generation Control
When (AGC, Automatic Generation Control), automatic growth control (AGC, Automatic Gain is accidentally used
Control) definition description.
Since document above is not directed to, or fail to provide, power station energy storage primary frequency control system and the original function in power station
The cooperation of rate regulating system or coupling process.Therefore after power station increases energy storage primary frequency control system newly, how to modify original
Set-value adjustment strategy and primary frequency modulation strategy make newly-increased energy storage primary frequency control system and the original power regulating system in power station
Seamless compatibility avoids the two from clashing in power adjustment procedure, and solves energy storage primary frequency control system in energy storage input
Power compensation problem, thus maximize promoted power station power regulation performance, mono- problem to be solved of Shang Shi.
Summary of the invention
It in order to overcome the above-mentioned deficiencies of the prior art, include energy storage primary frequency modulation system the purpose of the present invention is to provide one kind
The power station Poewr control method of system is designed adjustment to the original active power controller strategy in power station, allows to simultaneous
Hold energy storage primary frequency control system.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of power station Poewr control method comprising energy storage primary frequency control system, includes the following steps；
S1000) the coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy storage primary frequency control system
It closes；
S2000) the energy storage input of energy storage primary frequency control system and the coupling of constant value control system.
The S1000 includes:
S1100 in the case of) energy storage primary frequency control system or unit primary frequency control system individually undertake primary frequency modulation task, storage
The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy primary frequency control system, i.e., when energy storage is once adjusted
It is when the rated power and stored energy capacitance of display system fully meet power station primary frequency modulation demand, energy storage primary frequency control system is complete
Original unit primary frequency control system in power station is substituted, unit primary frequency modulation is spare as energy storage primary frequency modulation；
S1200) energy storage primary frequency control system is stored up in the case of unit primary frequency control system shared primary frequency modulation task
The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy primary frequency control system, i.e., when energy storage is once adjusted
When the rated power and stored energy capacitance of display system cannot fully meet power station primary frequency modulation demand, by energy storage primary frequency control system
The supplement of original unit primary frequency control system as power station, energy storage primary frequency modulation and unit primary frequency modulation complete one jointly
Secondary frequency modulation is adjusted.
The S1100 includes that energy storage primary frequency control system or unit primary frequency control system individually undertake primary frequency modulation task
In the case of, the output of the frequency modulation of energy storage primary frequency control system and the coupling of constant value control system, unit primary frequency control system include with
Lower step:
S1110 the primary frequency control system being active, energy storage primary frequency control system and unit primary frequency modulation system) are determined
The switch logic of system includes:
S1111) default energy storage primary frequency control system is primary, when putting into primary frequency function, if energy storage is once adjusted
Display system and unit primary frequency control system are available, then activate energy storage primary frequency control system；If energy storage primary frequency control system can
With unit primary frequency control system is unavailable, then activates energy storage primary frequency control system；If energy storage primary frequency control system is unavailable,
Unit primary frequency control system is available, then activates unit primary frequency control system；
S1112 when) primary frequency function has been put into, if the primary frequency control system failure being active, freezes
The primary frequency control system of failure activates the primary frequency control system of stand-by state；If energy storage primary frequency control system and unit are primary
The equal failure of frequency modulation system, then exit primary frequency function；
S1113) when operations staff issues the switching command of primary frequency control system, to the primary frequency modulation for being in stand-by state
The availability of system is detected, to the primary frequency control system of state of activation and the primary frequency modulation system of stand-by state if it is available
System carry out state switching, otherwise refuses switching command.
S1120) when energy storage primary frequency control system is active, primary frequency modulation is undertaken by energy storage primary frequency control system
Task, comprising the following steps:
S1121 the general objective regulated quantity of power station primary frequency control system, and the mesh as energy storage primary frequency control system) are calculated
Mark regulated quantity pf, calculation formula isI is unit serial number in formula；N is Hydropower Plant quantity；θiFor machine
The power generation mark of group i, is 1 when unit generation, is otherwise 0；The single machine being calculated for unit i according to formula (1) is primary
Frequency modulation target regulated quantity.If the p being calculatedfHigher than the rated output power upper limit of energy storage primary frequency modulation, or it is lower than energy storage one
The rated output power lower limit of secondary frequency modulation is then adjusted according to the rated output power limit value of energy storage primary frequency control system；
S1122) energy storage primary frequency control system adjusts strategy according to preset closed loop feedback and output power is adjusted, and makes
Output power is intended to primary frequency modulation target regulated quantity, and stablizes and adjusting in dead zone range, constant value control system and energy storage one
Secondary frequency modulation system works independently, and the controlled plant of Set-value adjustment is unit output power, and the controlled plant of primary frequency modulation is energy storage
System output power, for the angle of power station, Set-value adjustment and primary frequency modulation are in nature overlaying state.
S1130) when unit primary frequency control system is active, energy storage primary frequency control system is defeated without power
Out, Set-value adjustment and primary frequency modulation adopt the original power control strategy in power station, and details are not described herein again.
Energy storage primary frequency control system described in the S1200 and unit primary frequency control system shared primary frequency modulation are appointed
In the case of business, the frequency modulation output of energy storage primary frequency control system and the coupling of constant value control system, unit primary frequency control system include
Following steps:
S1210 the general objective regulated quantity of power station primary frequency control system) is calculated, calculation formula is using the formula in S1121
(2)；
S1220) constant value control system and unit primary frequency control system adopt the original power control strategy in power station and carry out
It adjusts；
S1230) to all primary frequency control systems in power station (including all unit primary frequency control systems and energy storage primary frequency modulation
System) total practical adjustments amount F calculated, method are as follows:
It S1231 is more than) primary frequency modulation threshold with mains frequency, the Rule of judgment as the starting of power station primary frequency modulation；
S1232) if power station primary frequency modulation acts, whole station output power is in the active setting value of whole station and adjusts dead zone
In range, then before receiving the new active setting value of Set-value adjustment whole station, F=H-Hs, H is current time power station in formula
Gross output, HsFor the gross output in primary frequency modulation start time power station；
S1233) if power station primary frequency modulation acts, whole station output power is in the active setting value of whole station and adjusts dead zone
Outside range, or new Set-value adjustment whole station active setting value is had received during primary frequency modulation, then F=H-Hset, in formula
HsetFor the active setting value of whole station in power station.
S1240 the target regulated quantity p of energy storage primary frequency control system) is calculatedf, calculation formula is
P ' in formulafFor the current regulated quantity of energy storage primary frequency control system.If the p being calculatedfHigher than the rated output function of energy storage primary frequency modulation
The rate upper limit, or lower than the rated output power lower limit of energy storage primary frequency modulation, then according to the rated output of energy storage primary frequency control system
Power limit is adjusted.
The step S2000 includes:
S2100) when energy storage primary frequency control system, which needs to carry out filling to energy storage device, can, let out energy, energy storage primary frequency modulation system
Plan energy storage input power B is calculated according to self-characteristic in systemt；
S2200) energy storage primary frequency control system is intended to energy storage input power BtIt is sent in a manner of analog or digital communication
To constant value control system AGC module；
S2300) constant value control system AGC module is according to plan energy storage input power Bt, the active setting of the whole station in power station
Value Hset, calculate whole station AGC total allocation power Hagc, Hagc=Hset+Bt；
S2400) constant value control system AGC module is according to power station actual conditions, under the premise of meeting every constraint condition,
By whole station AGC total allocation power HagcIt distributes to each unit；
S2500) energy storage primary frequency control system is by BtIt send in a manner of analog or digital communication to constant value control system
After AGC module, after the T that is delayed, energy storage input is carried out.Delay T herein, should be Hydropower Unit according to BtCarry out corresponding power
It adjusts, in signal transmission, the calculating of AGC distributive operation, PID closed loop, adjusts the links such as delay (fluid inertia, machinery inertial cause)
The lag time summation of consumption, although having certain randomness, fluctuation range is little, while considering energy storage input power
Power station output power is much smaller than in ratio, therefore adjusting according to operating experience to delay T can be primary by energy storage
The control of whole station output power deviation caused by frequency modulation system energy storage inputs is in acceptable degree.
Beneficial effects of the present invention:
1. the present invention optimizes the original active power controller strategy in power station, allows to compatible energy storage and once adjust
Display system avoids the various power control regulating systems in power station from clashing in adjustment process, to maximize promotion water power
The power regulation performance stood.
2. except adjust delay, regulations speed, the necessary regulating index of primary frequency modulations such as degree of regulation and stored energy capacitance,
Energy storage speed etc. is other to meet outside the necessary design objective of primary frequency modulation requirement, tool of the present invention to energy storage primary frequency control system
For body realization mechanism without constraint, the difference (battery energy storage, compressed-air energy storage, thermal storage and energy accumulation) of energy storage principle nor affects on this
The validity of invention, to make the present invention that there is wide applicability.
3. when the target regulated quantity to energy storage primary frequency control system calculates, not using the defeated according to unit of routine
The method that power is calculated out, but the gross output in power station has been used to be calculated, its significance lies in that, eliminate storage
The influence factor of energy primary frequency control system energy storage input power, simplifies calculating process, and improve the robustness of control strategy.
4. passing through after the active setting value of whole station of the energy storage input power and power station of energy storage primary frequency control system is added up
AGC module assignment is to power of the assembling unit closed loop adjustment module, indeed through the entire power constant value control system in power station to storage
Can primary frequency control system energy storage input compensates, on the one hand shield the power station mode of connection (mainly Hydropower Unit and
The mode of connection of energy storage primary frequency control system) influence that may cause, it is generally applicable to the present invention one-to-one, a pair of
On the other hand the different energy storage input modes of more, many-one, multi-to-multi avoid in customization adjusting and primary frequency modulation superposition, match
On the basis of conjunction etc. is problematic, the complexity of unit side power control strategy is further increased.
Detailed description of the invention
Fig. 1 is the main flow chart of power station Poewr control method of the present invention comprising energy storage primary frequency control system；
Fig. 2 is the logical flow chart for determining the primary frequency control system being active.
Fig. 3 is power station routine primary frequency modulation simulation model.
Fig. 4 is the power station primary frequency modulation simulation model comprising energy storage primary frequency control system.
Fig. 5 is the simulation waveform of power station routine primary frequency modulation.
The primary frequency modulation that energy storage primary frequency modulation and unit primary frequency modulation are adjusted jointly when Fig. 6 is without energy storage input emulates
Waveform.
Fig. 7 is the primary frequency modulation emulation wave that energy storage primary frequency modulation and unit primary frequency modulation are adjusted jointly when carrying out energy storage input
Shape 1.
Fig. 8 is the primary frequency modulation emulation wave that energy storage primary frequency modulation and unit primary frequency modulation are adjusted jointly when carrying out energy storage input
Shape 2.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Power station Poewr control method provided by the invention comprising energy storage primary frequency control system, as shown in Figure 1, include with
Lower content:
S1000) the coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy storage primary frequency control system
It closes:
S1100 in the case of) energy storage primary frequency control system or unit primary frequency control system individually undertake primary frequency modulation task, storage
The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy primary frequency control system:
S1110 the primary frequency control system being active, energy storage primary frequency control system and unit primary frequency modulation system) are determined
The logic of system is as shown in Figure 2, comprising:
S1111) default energy storage primary frequency control system is primary, when putting into primary frequency function, if energy storage is once adjusted
Display system and unit primary frequency control system are available, then activate energy storage primary frequency control system；If energy storage primary frequency control system can
With unit primary frequency control system is unavailable, then activates energy storage primary frequency control system；If energy storage primary frequency control system is unavailable,
Unit primary frequency control system is available, then activates unit primary frequency control system；
S1112 when) primary frequency function has been put into, if the primary frequency control system failure being active, freezes
The primary frequency control system of failure activates the primary frequency control system of stand-by state；If energy storage primary frequency control system and unit are primary
The equal failure of frequency modulation system, then exit primary frequency function；
S1113) when operations staff issues the switching command of primary frequency control system, to the primary frequency modulation for being in stand-by state
The availability of system is detected, to the primary frequency control system of state of activation and the primary frequency modulation system of stand-by state if it is available
System carry out state switching, otherwise refuses switching command
S1120) when energy storage primary frequency control system is active, primary frequency modulation is undertaken by energy storage primary frequency control system
Task, comprising the following steps:
S1121 the general objective regulated quantity of power station primary frequency control system, and the mesh as energy storage primary frequency control system) are calculated
Regulated quantity pf is marked, calculation formula isI is unit serial number in formula；N is Hydropower Plant quantity；θiFor unit i
Power generation mark, when unit generation be 1, be otherwise 0；The single machine primary frequency modulation being calculated for unit i according to formula (1)
Target regulated quantity.If the pf being calculated is higher than the rated output power upper limit of energy storage primary frequency modulation, or once adjusts lower than energy storage
The rated output power lower limit of frequency is then adjusted according to the rated output power limit value of energy storage primary frequency control system；
S1122) energy storage primary frequency control system adjusts strategy according to preset closed loop feedback and output power is adjusted, and makes
Output power is intended to primary frequency modulation target regulated quantity, and stablizes and adjusting in dead zone range.
S1130) when unit primary frequency control system is active, energy storage primary frequency control system is defeated without power
Out, Set-value adjustment and primary frequency modulation adopt the original power control strategy in power station.
S1200) energy storage primary frequency control system is stored up in the case of unit primary frequency control system shared primary frequency modulation task
The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy primary frequency control system:
S1210 the general objective regulated quantity of power station primary frequency control system) is calculated, calculation formula is using the formula in S1121
(2)；
S1220) constant value control system and unit primary frequency control system adopt the original power control strategy in power station and carry out
It adjusts；
S1230) to all primary frequency control systems in power station (including all unit primary frequency control systems and energy storage primary frequency modulation
System) total practical adjustments amount F calculated, method are as follows:
It S1231 is more than) primary frequency modulation threshold with mains frequency, the Rule of judgment as the starting of power station primary frequency modulation；
S1232) if power station primary frequency modulation acts, whole station output power is in the active setting value of whole station and adjusts dead zone
In range, then before receiving the new active setting value of Set-value adjustment whole station, F=H-Hs, H is current time power station in formula
Gross output, HsFor the gross output in primary frequency modulation start time power station；
S1233) if power station primary frequency modulation acts, whole station output power is in the active setting value of whole station and adjusts dead zone
Outside range, or new Set-value adjustment whole station active setting value is had received during primary frequency modulation, then F=H-Hset, in formula
HsetFor the active setting value of whole station in power station.
S1240 the target regulated quantity p of energy storage primary frequency control system) is calculatedf, calculation formula is
P' in formulafFor the current regulated quantity of energy storage primary frequency control system.If the pf being calculated is higher than the rated output of energy storage primary frequency modulation
The upper limit of the power, or lower than the rated output power lower limit of energy storage primary frequency modulation, then according to the specified defeated of energy storage primary frequency control system
Power limit is adjusted out.
S2000) the energy storage input of energy storage primary frequency control system and the coupling of constant value control system:
S2100) when energy storage primary frequency control system, which needs to carry out filling to energy storage device, can, let out energy, energy storage primary frequency modulation system
Plan energy storage input power B is calculated according to self-characteristic in systemt；
S2200) energy storage primary frequency control system is intended to energy storage input power BtIt is sent in a manner of analog or digital communication
To constant value control system AGC module；
S2300) constant value control system AGC module is according to energy storage input power Bt, the active setting value of the whole station in power station
Hset, calculate whole station AGC total allocation power Hagc, Hagc=Hset+Bt；
S2400) constant value control system AGC module is according to power station actual conditions, under the premise of meeting every constraint condition,
By whole station AGC total allocation power HagcIt distributes to each unit；
S2500) energy storage primary frequency control system is by BtIt send in a manner of analog or digital communication to constant value control system
After AGC module, after the T that is delayed, energy storage input is carried out, in the case where energy storage primary frequency control system allows, it may be considered that will
Energy storage input power is increased or decreased according to given pace to plan energy storage input power BtIt is total to power station to further decrease
The influence of output power.
When being proposed due to the present invention, application of the energy storage primary frequency control system in power station does not have economically feasible temporarily
Property (equipment cost, maintenance cost, occupied area, scheduled strategy not in place etc.), so being proposed without condition to the present invention
Strategy carry out comprehensive verification.It but still can be by the regulation performance of power station routine primary frequency modulation under Part load and this hair
Bright primary frequency modulation regulation performance carries out emulation comparison, to verify to effectiveness of the invention.
1) it constructs the simulation model (such as Fig. 3) of power station routine primary frequency modulation and has energy storage primary frequency control system (specified
Output power 30MW) power station primary frequency modulation simulation model (such as Fig. 4), simulation parameter table is as follows:
| Title | Symbol | If value |
| Adjust delay of feedback | Tf | 1 |
| Servomotor responsive time constant | Ty | 0.1 |
| Fluid inertia time constant | Tw | 2 |
| Unit (load) inertia time constant | Ta | 5 |
| Unit (load) static frequency self-regulation (characteristic) coefficient | en | 1.5 |
| Coefficient of frequency modulation | Kfp | 300 |
| PID adjusts scale parameter | PID_P | 0.8 |
| PID adjusts integral parameter | PID_I | 0.25 |
| PID adjusts differential parameter | PID_D | 0.05 |
2) simulation waveform of power station routine primary frequency modulation, as shown in Figure 5；
3) without under energy storage input condition, energy storage primary frequency control system and unit primary frequency control system adjust jointly one
Secondary frequency modulation simulation waveform, as shown in Figure 6；
4) after the T that is delayed, directly to plan energy storage input power Bt(10MW) is carried out under energy storage input condition, energy storage one
The primary frequency modulation simulation waveform that secondary frequency modulation system and unit primary frequency control system are adjusted jointly, as shown in Figure 7；
5) after the T that is delayed, energy storage input power is increased or decreased according to given pace to plan energy storage input power Bt
(10MW) to carry out under energy storage input condition, primary tune that energy storage primary frequency control system and unit primary frequency control system are adjusted jointly
Frequency simulation waveform, as shown in Figure 8.
Fig. 6, Fig. 7, Fig. 8 are the primary frequency modulations of power station Poewr control method of the present invention comprising energy storage primary frequency control system
Simulation result shows that the present invention can effectively realize the coupling of energy storage primary frequency control system and former power regulating system, improves water
The regulations speed of power station primary frequency modulation, and even if energy storage is carried out to energy storage primary frequency control system in primary frequency modulation action process
Input will not interfere the primary frequency modulation regulating effect in power station.The reason of not emulating to S1233 operating condition be,
(such as frequency modulation frequency modulation instruction is received during primary frequency modulation) is difficult to the regulated quantity to Set-value adjustment and one under S1233 operating condition
The regulated quantity of secondary frequency modulation is effectively distinguished, to necessarily lead to the inexactness of primary frequency modulation, so scheduling is to S1233 at present
Power station primary frequency modulation regulating effect under operating condition also tends to not examine.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (7)
1. a kind of power station Poewr control method comprising energy storage primary frequency control system, which is characterized in that include the following steps；
S1000) the coupling of the frequency modulation output and constant value control system, unit primary frequency control system of energy storage primary frequency control system；
S2000) the energy storage input of energy storage primary frequency control system and the coupling of constant value control system.
2. a kind of power station Poewr control method comprising energy storage primary frequency control system according to claim 1, feature
It is, the S1000 includes:
S1100 in the case of) energy storage primary frequency control system or unit primary frequency control system individually undertake primary frequency modulation task, energy storage one
The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of secondary frequency modulation system, i.e., when energy storage primary frequency modulation system
When the rated power and stored energy capacitance of system fully meet power station primary frequency modulation demand, energy storage primary frequency control system is substituted completely
Original unit primary frequency control system in power station, unit primary frequency modulation are spare as energy storage primary frequency modulation；
S1200) in the case of energy storage primary frequency control system and unit primary frequency control system shared primary frequency modulation task, energy storage one
The coupling of the frequency modulation output and constant value control system, unit primary frequency control system of secondary frequency modulation system, i.e., when energy storage primary frequency modulation system
When the rated power and stored energy capacitance of system cannot fully meet power station primary frequency modulation demand, using energy storage primary frequency control system as
The supplement of original unit primary frequency control system in power station, energy storage primary frequency modulation and unit primary frequency modulation are completed once to adjust jointly
Frequency modulation section.
3. a kind of power station Poewr control method comprising energy storage primary frequency control system according to claim 2, feature
It is, the S1100 includes that energy storage primary frequency control system or unit primary frequency control system individually undertake primary frequency modulation task feelings
Under condition, the frequency modulation output of energy storage primary frequency control system and the coupling of constant value control system, unit primary frequency control system include following
Step:
S1110 the primary frequency control system being active, energy storage primary frequency control system and unit primary frequency control system) are determined
Logic includes:
S1111) default energy storage primary frequency control system is primary, when putting into primary frequency function, if energy storage primary frequency modulation system
System and unit primary frequency control system are available, then activate energy storage primary frequency control system；If energy storage primary frequency control system is available, machine
Group primary frequency control system is unavailable, then activates energy storage primary frequency control system；If energy storage primary frequency control system is unavailable, unit one
Secondary frequency modulation system is available, then activates unit primary frequency control system；
S1112 when) primary frequency function has been put into, if the primary frequency control system failure being active, freezes failure
Primary frequency control system, activate the primary frequency control system of stand-by state；If energy storage primary frequency control system and unit primary frequency modulation
The equal failure of system, then exit primary frequency function；
S1113) when operations staff issues the switching command of primary frequency control system, to the primary frequency control system for being in stand-by state
Availability detected, if it is available to the primary frequency control system of the primary frequency control system of state of activation and stand-by state into
The switching of row state, otherwise refuses switching command.
4. a kind of power station Poewr control method comprising energy storage primary frequency control system according to claim 3, feature
It is, S1120) when energy storage primary frequency control system is active, primary frequency modulation is undertaken by energy storage primary frequency control system and is appointed
Business, comprising the following steps:
S1121 the general objective regulated quantity of power station primary frequency control system, and the target tune as energy storage primary frequency control system) are calculated
Section amount pf, calculation formula isI is unit serial number in formula；N is Hydropower Plant quantity；θiFor unit i's
Power generation mark is 1 when unit generation, is otherwise 0；The single machine primary frequency modulation mesh being calculated for unit i according to formula (1)
Regulated quantity is marked, if the p being calculatedfHigher than the rated output power upper limit of energy storage primary frequency modulation, or it is lower than energy storage primary frequency modulation
Rated output power lower limit, then be adjusted according to the rated output power limit value of energy storage primary frequency control system；
S1122) energy storage primary frequency control system adjusts strategy according to preset closed loop feedback and output power is adjusted, and makes to export
Power is intended to primary frequency modulation target regulated quantity, and stablizes and adjusting in dead zone range, and constant value control system is once adjusted with energy storage
Display system works independently, and the controlled plant of Set-value adjustment is unit output power, and the controlled plant of primary frequency modulation is energy-storage system
Output power, for the angle of power station, Set-value adjustment and primary frequency modulation are in nature overlaying state.
5. a kind of power station Poewr control method comprising energy storage primary frequency control system according to claim 3, feature
It is, S1130) when unit primary frequency control system is active, energy storage primary frequency control system is fixed without power output
Value is adjusted and primary frequency modulation adopts the original power control strategy in power station, and details are not described herein again.
6. a kind of power station Poewr control method comprising energy storage primary frequency control system according to claim 2, feature
It is, in the case of the S1200 energy storage primary frequency control system and unit primary frequency control system shared primary frequency modulation task,
Energy storage primary frequency control system frequency modulation output with constant value control system, unit primary frequency control system coupling the following steps are included:
S1210 the general objective regulated quantity of power station primary frequency control system) is calculated, calculation formula is using the formula (2) in S1121；
S1220) constant value control system and unit primary frequency control system adopt the original power control strategy in power station and are adjusted；
S1230) total practical adjustments amount F of all primary frequency control systems in power station is calculated, method are as follows:
It S1231 is more than) primary frequency modulation threshold with mains frequency, the Rule of judgment as the starting of power station primary frequency modulation；
S1232) if power station primary frequency modulation acts, whole station output power is in the active setting value of whole station and adjusts dead zone range
It is interior, then before receiving the new active setting value of Set-value adjustment whole station, F=H-Hs, H is the total defeated of current time power station in formula
Power out, HsFor the gross output in primary frequency modulation start time power station；
S1233) if power station primary frequency modulation acts, whole station output power is in the active setting value of whole station and adjusts dead zone range
Outside, or during primary frequency modulation the new active setting value of Set-value adjustment whole station is had received, then F=H-Hset, H in formulasetFor
The active setting value of the whole station in power station；
S1240 the target regulated quantity p of energy storage primary frequency control system) is calculatedf, calculation formula isIn formula
p'fFor the current regulated quantity of energy storage primary frequency control system, if the p being calculatedfOn rated output power higher than energy storage primary frequency modulation
Limit, or lower than the rated output power lower limit of energy storage primary frequency modulation, then according to the rated output power of energy storage primary frequency control system
Limit value is adjusted.
7. a kind of power station Poewr control method comprising energy storage primary frequency control system according to claim 1, feature
It is, the step S2000 includes:
S2100) when energy storage primary frequency control system, which needs to carry out filling to energy storage device, can, let out energy, energy storage primary frequency control system root
Plan energy storage input power B is calculated according to self-characteristict；
S2200) energy storage primary frequency control system is intended to energy storage input power BtIt send in a manner of analog or digital communication to definite value
Regulating system AGC module；
S2300) constant value control system AGC module is according to energy storage input power Bt, the active setting value H of the whole station in power stationset, calculate
Whole station AGC total allocation power Hagc, Hagc=Hset+Bt；
S2400) constant value control system AGC module will be full under the premise of meeting every constraint condition according to power station actual conditions
Stand AGC total allocation power HagcIt distributes to each unit；
S2500) energy storage primary frequency control system is by BtIt send in a manner of analog or digital communication to constant value control system AGC mould
After block, after the T that is delayed, energy storage input is carried out, delay T herein should be Hydropower Unit according to BtCorresponding power adjusting is carried out,
The lag time summation of the links such as delay consumption is calculated, adjusts in signal transmission, AGC distributive operation, PID closed loop, although having
Certain randomness, but fluctuation range is little, while in view of energy storage input power is much smaller than power station output work in ratio
Rate, therefore being adjusted according to operating experience to delay T can be by whole station caused by energy storage primary frequency control system energy storage input
Output power deviation controls in acceptable degree.
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