CN-121984068-A - Energy storage system design method and related device for Sha Gehuang wind-solar new energy station

CN121984068ACN 121984068 ACN121984068 ACN 121984068ACN-121984068-A

Abstract

The invention discloses a design method and a related device of an energy storage system of a sand-go barren wind-light new energy station, which belong to the technical field of energy storage configuration of wind-light new energy stations, the method comprises the steps of collecting environment parameters of a target Sha Ge barren area and historical operation parameters of a matched wind-light new energy station, screening to obtain output data sets of a high-temperature period and a normal-temperature period, further calculating to obtain output fluctuation amplitude of the high-temperature period and the normal-temperature period, carrying out basic selection of a battery model and a protection structure based on the environment parameters, carrying out redundancy correction on the selection by utilizing the historical operation parameters of the wind-light new energy station, combining Sha Gehuang temperature compensation requirements with wind-light new energy station capacity redundancy requirements, carrying out cooperative calculation of total power of heating plates and energy storage design capacity, setting charge-discharge power limit and heat dissipation mode switching logic under different working conditions based on the output fluctuation amplitude, and cooperatively optimizing self-cleaning period and cleaning period of the energy storage system according to the environment parameters of the Sha Ge barren area and the wind-light new energy station historical wind-abandoning rate.

Inventors

CHENG QIAN
PING XIAOFAN
YANG CHAORAN
Duan Zhaorong
LIU WEI
WEI YU
WANG NING
SONG JISHUO
LIU MINGYI
CAO XI
LI JING
GUO XIAOWEI
YIN LIJUAN
Hao sai
CAO CHUANZHAO
LEI HAODONG

Assignees

中国华能集团清洁能源技术研究院有限公司
华能平山清洁能源有限责任公司
华能国际电力股份有限公司河北清洁能源分公司

Dates

Publication Date: 20260505
Application Date: 20260114

Claims (10)

1. The design method of the energy storage system of the sand-gossypii wind-light new energy station is characterized by comprising the following steps of: Synchronously collecting environmental parameters of a target Sha Ge barren area and historical operation parameters of a matched wind-solar new energy station, screening to obtain a high-temperature period output data set and a normal-temperature period output data set, and further calculating to obtain output fluctuation amplitude of the high-temperature period and the normal-temperature period; performing basic model selection of battery models and protective structures based on environmental parameters of Sha Ge barren areas, and performing redundancy correction on model selection by utilizing historical operation parameters of wind-solar new energy stations; Combining Sha Gehuang temperature compensation requirements with capacity redundancy requirements of the wind-solar new energy station, and carrying out cooperative calculation on total power of the heating plate and energy storage design capacity; Setting charge-discharge power limit and heat dissipation mode switching logic under different working conditions based on the fluctuation amplitude of the output; and according to the environmental parameters of Sha Ge barren areas and the historical wind abandoning rate of the wind-solar new energy station, the self-cleaning period and the cleaning period of the energy storage system are cooperatively optimized, and the design of the energy storage system is completed.
2. The method for designing an energy storage system of a sand-gossypii new energy station according to claim 1, wherein the step of synchronously collecting the environmental parameters of the target Sha Ge barren area and the historical operation parameters of the matched wind-solar new energy station, screening to obtain a high-temperature output data set and a normal-temperature output data set, and further calculating to obtain the output fluctuation amplitude of the high-temperature period and the normal-temperature period specifically comprises the following steps: The method comprises the steps of synchronously collecting environmental parameters of a target Sha Ge barren region and historical operating parameters of a matched wind and light new energy field station, wherein the environmental parameters of the Sha Ge barren region comprise an extreme high temperature value T max , a day-and-night temperature difference average value delta T, a month-average sand and dust concentration maximum value S max and a sand and dust weather month frequency F, and the historical operating parameters of the wind and light new energy field station comprise a historical maximum output sudden rise value delta P up , a historical maximum output sudden drop value delta P down , wind and light new energy field station rated power P rated , rated energy storage capacity E rated and wind and light new energy field station 10-minute output data; The output data of the wind-solar new energy field station is screened based on the extreme high temperature value in the environmental parameter, and a high-temperature output data set P high and a normal-temperature output data set P normal are respectively obtained; the fluctuation amplitude of the output force in the high temperature period and the normal temperature period is calculated, and the specific calculation formula is as follows: In the formula, Standard deviation of P high ; Is the standard deviation of P normal .
3. The method for designing an energy storage system of a new energy station of a sand-gossypii scene as claimed in claim 1, wherein the steps of performing basic model selection of a battery model and a protection structure based on the environmental parameters of Sha Ge barren areas and performing redundancy correction on the model selection by utilizing the historical operation parameters of the new energy station of the scene specifically comprise: Performing basic model selection on the battery model by using the environmental parameters of Sha Ge barren areas to obtain the battery with the high Wen Rongliang retention rate of more than or equal to 1- (T max -25 ℃) multiplied by 0.005, and correcting the basic model selection by using the historical operation parameters of the wind-solar new energy station to obtain the battery with the high Wen Rongliang retention rate of more than or equal to [1- (T max -25 ℃) multiplied by 0.005] +5%; IP65 protection is selected when the maximum value S max of the average sand and dust concentration in the month is more than or equal to 500 mu g/m3, and IP55 protection is selected when the maximum value S max of the average sand and dust concentration in the month is less than 500 mu g/m 3; the power correction formula of the cooling fan is that the final fan power= (T max -45 ℃) x 0.5+ basic fan power x 1.1.
4. The method for designing an energy storage system of a new energy station of sand-gossypii scene as claimed in claim 1, wherein the calculation formula of the total power of the heating plate is as follows: P heat =（E rated X1000/cell voltage) X0.1X DeltaT X (1+DeltaP up /200) Wherein E rated multiplied by 1000/battery cell voltage is the total capacity of the battery pack, and delta P up /200 is the power redundancy coefficient caused by fluctuation of a wind-solar new energy station; the calculation formula of the energy storage design capacity is as follows: E design =E rated ×（1+ΔP up /100）×（1+（T max -45°C)/100) Wherein (1+DeltaP up /100) is the capacity redundancy coefficient corresponding to the maximum output sudden rise of the wind-solar new energy field station, and (1+ (T max -45 ℃) and 100) is the redundancy coefficient corresponding to the high-temperature capacity attenuation and high-temperature period fluctuation increase of Sha Gehuang.
5. The method for designing an energy storage system of a sand-gorgon wind-solar new energy station according to claim 1, wherein the charge-discharge power limitation includes: When the wind power rises suddenly by DeltaP up ≥ΔP up multiplied by 0.8 and the extremely high temperature value T max is more than or equal to 45 ℃, the charge and discharge power limit P limit =P rated ×（1+ΔP up /100) multiplied by 1.05; When the wind power suddenly drops by DeltaP up ≤-ΔP down multiplied by 0.8 and the extremely high temperature value T max is less than or equal to 15 ℃, the charge and discharge power limit P limit =P rated ×（1+ΔP down /100) multiplied by 0.95; the heat dissipation mode switching logic is as follows: When the extreme high temperature value T max is more than or equal to 45 ℃ and the fluctuation delta P of the wind-solar new energy field station output is more than or equal to 20%, starting the heat pipe and the fan to perform heat radiation in a combined way; When 15 ℃ is less than an extremely high temperature value T max is less than 45 ℃ and delta P is less than 20%, only heat pipe heat dissipation is started; When the extremely high temperature value T max is less than or equal to 15 ℃ and the delta P is less than or equal to-20%, the fan is turned off and the heat preservation layer and the heating plate are started.
6. The method for designing an energy storage system of a sand-gossypii new energy station according to claim 1, wherein the calculation formula of the self-cleaning period is as follows: t clean =24/(F/30) × (1-historical rate of wind disposal/200) Wherein F/30 is the frequency of the day-averaged dust weather, and the historical wind abandon rate/200 is the wind abandon rate correction coefficient, and T clean is the self-cleaning period; the cleaning period is preferentially set to be started in a period that the historical wind abandoning rate of the wind-solar new energy station is more than or equal to 10 percent.
7. The method for designing an energy storage system of a sand-gossypii new energy station as claimed in claim 1, further comprising: And uniformly verifying the designed energy storage system, and if the verification index does not meet the preset requirement, synchronously fine-adjusting related parameters, wherein the verification index comprises that the battery temperature is less than or equal to 50 ℃ in a Sha Gehuang high-temperature period, the battery charge-discharge cycle life is more than or equal to 5000 times in the high-temperature period, and the fluctuation of the output voltage of the system is less than or equal to +/-5%.
8. An energy storage system design system of a sand gorgeous scene new energy station is characterized by comprising: The data acquisition module is used for synchronously acquiring the environmental parameters of the target Sha Ge barren area and the historical operation parameters of the matched wind-solar new energy station, screening to obtain a high-temperature output data set and a normal-temperature output data set, and further calculating to obtain the output fluctuation amplitude of the high-temperature period and the normal-temperature period; the battery and protection model selection module is used for performing basic model selection of battery models and protection structures based on environmental parameters of Sha Ge barren areas, and performing redundancy correction on model selection by utilizing historical operation parameters of the wind-solar new energy station; The collaborative capacity configuration module is used for combining Sha Gehuang temperature compensation requirements with capacity redundancy requirements of the wind-solar new energy station to perform collaborative calculation of total power of the heating plate and energy storage design capacity; The operation control strategy setting module is used for setting charge and discharge power limitation and heat dissipation mode switching logic under different working conditions based on the output fluctuation range; And the maintenance strategy optimization module is used for cooperatively optimizing the self-cleaning period and the cleaning period of the energy storage system according to the environmental parameters of Sha Ge barren areas and the historical wind abandoning rate of the wind-solar new energy station to complete the design of the energy storage system.
9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, carries out the steps of a method for designing an energy storage system of a new energy station of the sand gorboom scene as claimed in any one of claims 1-7.
10. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of a method for designing an energy storage system of a sand-gorboom wind-solar new energy station according to any one of claims 1-7.

Description

Energy storage system design method and related device for Sha Gehuang wind-solar new energy station Technical Field The invention belongs to the technical field of energy storage configuration of wind and light new energy stations, and relates to a design method and a related device of an energy storage system of a sand and gossypii wind and light new energy station. Background As global energy structures are transformed to clean low carbon, renewable energy duty ratios, represented by wind energy, solar energy, continue to rise. The construction of a large Sha Gehuang wind and light new energy station base is an important component of an energy strategy. However, wind power output has inherent characteristics of intermittence, volatility and randomness, and large-scale grid connection is challenging to the stable operation of a power grid. To solve this problem, the energy storage system is configured, and a cooperative operation mode of 'renewable energy sources and energy storage' is established, which has become industry consensus and standard configuration. The energy storage system can smooth wind power output fluctuation, participate in peak regulation and frequency modulation of the power grid, improve wind power absorption capacity, and is a key technical means for guaranteeing safe and stable operation of the high-proportion renewable energy power grid. At present, most design methods for configuring an energy storage system in a wind-solar new energy station still use a generalized and templated idea. The traditional design method only considers macroscopic output characteristics (such as rated power and maximum sudden change rate) of the wind-solar new energy field station and standard performance parameters of the energy storage equipment, but fails to deeply combine the specific physical environment of the energy storage system and the long-term historical operation characteristics of the specific wind-solar new energy field station served by the specific physical environment. The design and application scene are disjointed, and increasingly remarkable limitations are exposed in Sha Ge barren areas with extremely severe environmental conditions, and the design and application scene mainly show the following aspects. First, scene interoperability is lost, resulting in reduced system reliability. Sha Ge the barren environment has the remarkable characteristics of extremely high temperature, huge day and night temperature difference, high dust concentration and the like. These environmental factors not only directly affect the rate of performance decay, cycle life and safe operation of the energy storage device (especially the electrochemical cells), but also indirectly affect the operational state of the wind turbine generator set itself. For example, extremely high temperatures may cause a reduction in wind turbine efficiency or trigger a down run, causing its output profile to exhibit different fluctuation characteristics than in normal temperature regions. The existing design method regards the environmental impact factors and the operation impact of the wind-solar new energy station as two isolated dimensions, and fails to perform integrated association analysis. As a result, when the designed energy storage system faces the special high-temperature high-fluctuation coupling working condition in Sha Ge barren areas, the heat dissipation system may have insufficient capacity, the attenuation of the battery is accelerated, the system failure is frequently generated finally, the shutdown rate is increased, and the harsh requirement of the Sha Gehuang wind power base on the long-term stable operation of the energy storage system cannot be met. Second, full life cycle costs and performance considerations are inadequate, resulting in poor economics. The design of generic templates tends to adopt conservative redundant configuration to ensure safety, easily causes 'over design', and has high cost of investment at one time. However, this approach may ignore operational maintenance costs and system efficiency over the full life cycle. In Sha Ge barren environment, dust and sand can block the cooling air duct and the filter screen, aggravate equipment heat dissipation burden, if not according to local dust and sand frequency and wind-light new energy station abandon the clean maintenance period of time period intelligence planning, will lead to the maintenance cost to increase greatly, and frequent maintenance shut down also can influence the power station income. Third, the dynamic response characteristics are not matched with the actual requirements of the power grid, resulting in poor synergistic stability. The regulation of the power grid to the energy storage system often requires a quick, accurate response. Sha Gehuang wind and light new energy stations may have more variability in the amplitude and rate of the output fluctuation due to their environmental specificity. The existing design metho