CN115764939A - Energy storage energy management method and system for offshore wind power absorption and peak shaving frequency modulation - Google Patents

Energy storage energy management method and system for offshore wind power absorption and peak shaving frequency modulation Download PDF

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CN115764939A
CN115764939A CN202211370155.5A CN202211370155A CN115764939A CN 115764939 A CN115764939 A CN 115764939A CN 202211370155 A CN202211370155 A CN 202211370155A CN 115764939 A CN115764939 A CN 115764939A
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power
energy storage
wind farm
offshore wind
power station
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李相俊
吴荣宇
陈金玉
董立志
张伟骏
李智诚
邓超平
熊嘉丽
贾学翠
李煜阳
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
State Grid Fujian Electric Power Co Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
State Grid Fujian Electric Power Co Ltd
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Abstract

本发明公开了一种海上风电消纳和调峰调频的储能能量管理方法及系统，包括：获取当前时刻风电场运行数据和储能电站荷电状态数据；根据当前时刻风电场运行数据和储能电站荷电状态数据得到海上风电场的限电状态；若限电，海上风电场按限电调度计划出力，储能电站以最大功率充电；若非限电，将风电场和储能电站运行模式选择为调频模式或者调峰模式；根据调频模式或者调峰模式中修正结果修正风电场和储能出力。本发明方法能够对储能电站充放电功率和荷电状态进行实时调控，实现提升海上风电消纳和调峰调频的目的，同时优化了储能电站的能量管理。

Figure 202211370155

The invention discloses an energy storage energy management method and system for offshore wind power consumption and peak regulation and frequency regulation, comprising: obtaining the current moment wind farm operation data and the charge state data of the energy storage station; The state of charge of the energy station can be used to obtain the power limit status of the offshore wind farm; if there is a power limit, the offshore wind farm will output power according to the power limit dispatch plan, and the energy storage power station will charge at the maximum power; Select the frequency modulation mode or peak shaving mode; correct the wind farm and energy storage output according to the correction results in the frequency modulation mode or peak shaving mode. The method of the invention can perform real-time regulation on the charging and discharging power and charge state of the energy storage power station, realize the purpose of improving offshore wind power consumption and peak regulation and frequency regulation, and simultaneously optimize the energy management of the energy storage power station.

Figure 202211370155

Description

海上风电消纳和调峰调频的储能能量管理方法及系统Energy storage energy management method and system for offshore wind power consumption and peak regulation and frequency regulation

技术领域technical field

本发明设计电力管理技术领域，具体涉及一种储能电站的能量管理，尤其涉及一种海上风电消纳和调峰调频的储能能量管理方法及系统。The invention relates to the technical field of electric power management, and specifically relates to energy management of an energy storage power station, in particular to an energy storage energy management method and system for offshore wind power consumption and peak regulation and frequency regulation.

背景技术Background technique

在全球减少碳排放的大背景下，新能源发电逐渐成为一次能源消费的主要来源，大力发展新能源有助于各国能源消费多元化，优化能源结构和提升应对突发情况的能力。随着对新能源发展潜力的发掘，海上风电场因无需考虑地形对风速的影响、发电利用率高和对生态环境影响小等特点，从陆上风电场到海上风电场现成为一种趋势。Under the background of global reduction of carbon emissions, new energy power generation has gradually become the main source of primary energy consumption. Vigorously developing new energy will help countries diversify energy consumption, optimize energy structure and improve the ability to deal with emergencies. With the exploration of new energy development potential, offshore wind farms have become a trend from onshore wind farms to offshore wind farms because they do not need to consider the influence of terrain on wind speed, high power generation utilization rate, and low impact on the ecological environment.

随着各类储能电池及其集成装配技术的迅猛发展，新能源场站配置储能电站解决新能源因波动性、间歇性和季节性引起等问题，同时储能电站也能参与电网的调峰调频、削峰填谷、跟踪计划出力和平滑风功率波动等单一或多重应用。With the rapid development of various energy storage batteries and their integrated assembly technology, new energy stations are equipped with energy storage power stations to solve problems caused by new energy fluctuations, intermittent and seasonality, and energy storage power stations can also participate in grid regulation. Single or multiple applications such as peak frequency modulation, peak shaving and valley filling, tracking planned output and smoothing wind power fluctuations.

目前海上风电场的能量管理方法基本是依靠风电场本身调节或者是通过海底高压直流电缆传输到陆上换流站，再由换流站实现调峰调频，并未能够良好地实现海上风电场能量管理的远距离消纳和调峰调频目的，而为了提升海上风电调峰调频能力，海上风电场与大容量储能电站联合发电能够很好地解决海上风电能量远距离管理的问题。At present, the energy management method of offshore wind farms basically relies on the adjustment of the wind farm itself or transmits it to the onshore converter station through the submarine high-voltage DC cable, and then the converter station realizes peak regulation and frequency modulation, which has not been able to realize the energy of offshore wind farms well. The purpose of long-distance consumption and peak regulation and frequency regulation of management, and in order to improve the peak regulation and frequency regulation capability of offshore wind power, the joint generation of offshore wind farms and large-capacity energy storage power stations can well solve the problem of long-distance management of offshore wind power energy.

在海上风电场配置储能电站后，如何实现储能电站的能量管理以满足提升海上风电场消调峰调频需求是核心问题。目前缺少了海上风电场配置大容量储能电站的能量管理方法。After the energy storage power station is configured in the offshore wind farm, how to realize the energy management of the energy storage power station to meet the needs of the peak frequency regulation of the offshore wind farm is the core issue. At present, there is a lack of energy management methods for configuring large-capacity energy storage power stations in offshore wind farms.

发明内容Contents of the invention

为了克服上述现有技术的不足，本发明提供了一种海上风电消纳和调峰调频的储能能量管理方法及系统。本发明方法能够对储能电站充放电功率和荷电状态进行实时调控，实现提升海上风电消纳和调峰调频的目的，同时优化了储能电站的能量管理。In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an energy storage energy management method and system for offshore wind power accommodation and peak regulation and frequency regulation. The method of the invention can perform real-time regulation on the charging and discharging power and charge state of the energy storage power station, realize the purpose of improving offshore wind power consumption and peak regulation and frequency regulation, and simultaneously optimize the energy management of the energy storage power station.

为达到上述目的，本发明采用以下技术方案予以实现：In order to achieve the above object, the present invention adopts the following technical solutions to achieve:

一种海上风电消纳和调峰调频的储能能量管理方法，包括：An energy storage energy management method for offshore wind power consumption and peak regulation and frequency regulation, comprising:

获取当前时刻风电场运行数据和储能电站荷电状态数据；Obtain current wind farm operation data and energy storage power station charge state data;

根据当前时刻风电场运行数据和储能电站荷电状态数据得到海上风电场的限电状态；若限电，海上风电场按限电调度计划出力，储能电站以最大功率充电；若非限电，将风电场和储能电站运行模式选择为调频模式或者调峰模式；According to the current operation data of the wind farm and the state of charge data of the energy storage power station, the curtailment status of the offshore wind farm is obtained; if the power is curtailed, the offshore wind farm will output power according to the power curtailment scheduling plan, and the energy storage power station will charge at the maximum power; if there is no power curtailment, Select the operation mode of wind farm and energy storage power station as frequency regulation mode or peak regulation mode;

根据调频模式或者调峰模式中修正结果修正风电场和储能出力。Correct the output of wind farms and energy storage according to the correction results in frequency regulation mode or peak regulation mode.

作为本发明的进一步改进，所述根据当前时刻风电场运行数据和储能电站荷电状态数据得到海上风电场的限电状态包括：As a further improvement of the present invention, the obtaining the power-limited state of the offshore wind farm according to the current moment wind farm operation data and the state-of-charge data of the energy storage power station includes:

从风电场日前调度数据中得到海上风电场的限电计划和非限电计划，Obtain the curtailment plan and non-restriction plan of the offshore wind farm from the day-ahead scheduling data of the wind farm,

根据当前时刻风电场运行数据和储能电站荷电状态数据判断海上风电场为限电计划或非限电计划，得到海上风电场的限电状态。According to the operation data of the wind farm at the current moment and the state of charge data of the energy storage power station, it is judged whether the offshore wind farm is a power curtailment plan or a non-power curtailment plan, and the power curtailment status of the offshore wind farm is obtained.

作为本发明的进一步改进，所述调频模式包括：As a further improvement of the present invention, the frequency modulation mode includes:

获取陆上换流站频率数据

Figure BDA0003925216650000021
和风电场调频数据；Obtain frequency data of onshore converter stations
Figure BDA0003925216650000021
and wind farm frequency modulation data;

通过风电场调频数据计算海上风电场节点处频率测量值

Figure BDA0003925216650000022
计算海上风电场与陆上换流站的频率差值
Figure BDA0003925216650000023
Calculation of frequency measurements at nodes of offshore wind farms from frequency modulation data of wind farms
Figure BDA0003925216650000022
Calculation of frequency difference between offshore wind farm and onshore converter station
Figure BDA0003925216650000023

比较频率差值是否小于调频死区，若是，则海上风电场维持原状态，储能电站不动作；若否，则判断当前调频需求为短时尖峰需求或长时稳态需求，若当前调频需求为短时尖峰需求，则海上风电场转为分布式集群控制，修正风电场内电机输出功率；若当前调频需求为长时稳态需求，则大容量储能电站采用下垂控制调节电站输出功率；Compare whether the frequency difference is smaller than the frequency modulation dead zone. If yes, the offshore wind farm maintains the original state and the energy storage power station does not operate; if not, it is determined that the current frequency modulation demand is a short-term peak demand or a long-term steady-state demand. If it is a short-term peak demand, the offshore wind farm will switch to distributed cluster control to correct the output power of the motor in the wind farm; if the current frequency modulation demand is a long-term steady-state demand, the large-capacity energy storage power station will use droop control to adjust the output power of the power station;

输出调频模式调节结果。Output the adjustment result of the frequency modulation mode.

作为本发明的进一步改进，所述大容量储能电站采用下垂控制调节电站输出功率，控制调节系数δt为：As a further improvement of the present invention, the large-capacity energy storage power station adopts droop control to adjust the output power of the power station, and the control adjustment coefficient δt is:

Figure BDA0003925216650000031
Figure BDA0003925216650000031

式中，δt为控制调节系数；

Figure BDA0003925216650000032
为实时频率与工频的差值；
Figure BDA0003925216650000033
为实时频率；α为一次调频死区；
Figure BDA0003925216650000034
为电网工频；In the formula, δt is the control adjustment coefficient;
Figure BDA0003925216650000032
is the difference between the real-time frequency and the power frequency;
Figure BDA0003925216650000033
is the real-time frequency; α is the primary frequency modulation dead zone;
Figure BDA0003925216650000034
is the power frequency of the power grid;

且满足如下约束：And satisfy the following constraints:

-0.1≤δt≤0.1-0.1≤δt ≤0.1

当

Figure BDA0003925216650000035
且δt>0时，修正为：δt＝0，则储能电站的输出功率为：when
Figure BDA0003925216650000035
And when δ t >0, the correction is: δ t = 0, then the output power of the energy storage power station is:

Figure BDA0003925216650000036
Figure BDA0003925216650000036

式中，

Figure BDA0003925216650000037
为储能电站的输出功率；
Figure BDA0003925216650000038
为储能电站的额定功率。In the formula,
Figure BDA0003925216650000037
is the output power of the energy storage power station;
Figure BDA0003925216650000038
is the rated power of the energy storage power station.

作为本发明的进一步改进，所述调峰模式包括：As a further improvement of the present invention, the peak regulation mode includes:

获得风电场预测输出功率数据和风电场各节点电压电流数据；Obtain the predicted output power data of the wind farm and the voltage and current data of each node of the wind farm;

根据风电场各节点电压电流数据计算各节点风电场输出功率；根据各节点风电场输出功率计算海上风电场实际输出功率，其与预测输出功率的差值；Calculate the output power of each node wind farm according to the voltage and current data of each node of the wind farm; calculate the actual output power of the offshore wind farm according to the output power of each node wind farm, and the difference between it and the predicted output power;

判断实际和预测差值的绝对值是否小于预设调峰死区，若是，则海上风电场按日前预测计划出力；若否，判断当前时刻风电场是否能够自我调峰消纳；若是，重新修正风电场各风机的出力因子，根据修正后的出力因子调节各风机的输出功率；若否，则判断当前时刻大容量储能电站SOC状态；根据上述储能电站SOC状态，修正储能电站输出功率；Judging whether the absolute value of the difference between the actual and predicted values is less than the preset peak-shaving dead zone, if so, the offshore wind farm will output power according to the day-ahead forecast plan; if not, judge whether the wind farm can self-schedule and absorb the peak at the current moment; if so, re-correct The output factor of each wind turbine in the wind farm, adjust the output power of each wind turbine according to the corrected output factor; if not, judge the SOC state of the large-capacity energy storage power station at the current moment; according to the SOC state of the energy storage power station above, correct the output power of the energy storage power station ;

输出调峰模式调节结果。Output the adjustment result of peak shaving mode.

作为本发明的进一步改进，所述判断当前时刻大容量储能电站SOC状态，SOC计算公式如下：As a further improvement of the present invention, the SOC calculation formula for judging the SOC state of the large-capacity energy storage power station at the current moment is as follows:

Figure BDA0003925216650000041
Figure BDA0003925216650000041

式中，

Figure BDA0003925216650000042
为t时刻储能电站的荷电状态；
Figure BDA0003925216650000043
为储能电站初始时刻的荷电状态；Δt为调峰消纳模式数据采样间隔；T为一天内总采样数；
Figure BDA00039252166500000411
为储能电站的输出功率；
Figure BDA0003925216650000044
为储能电站额定容量；In the formula,
Figure BDA0003925216650000042
is the state of charge of the energy storage power station at time t;
Figure BDA0003925216650000043
is the state of charge of the energy storage power station at the initial moment; Δt is the data sampling interval of the peak regulation consumption mode; T is the total number of samples in one day;
Figure BDA00039252166500000411
is the output power of the energy storage power station;
Figure BDA0003925216650000044
is the rated capacity of the energy storage power station;

设置储能电站的SOC工作范围，避免电站因过充过放而缩短使用寿命，设置范围如下：Set the SOC working range of the energy storage power station to avoid shortening the service life of the power station due to overcharging and overdischarging. The setting range is as follows:

Figure BDA0003925216650000045
Figure BDA0003925216650000045

作为本发明的进一步改进，所述根据上述储能电站SOC状态，修正储能电站输出功率，As a further improvement of the present invention, the output power of the energy storage power station is corrected according to the above SOC state of the energy storage power station,

将储能电站SOC状态分为4种充放电形式，具体如下：The SOC state of the energy storage power station is divided into four charging and discharging forms, as follows:

Figure BDA0003925216650000046
Figure BDA0003925216650000046

式中，

Figure BDA0003925216650000047
为t时刻储能电站的放电最大功率；
Figure BDA0003925216650000048
为t时刻储能电站的放电功率；
Figure BDA0003925216650000049
为t时刻储能电站的充电功率；
Figure BDA00039252166500000410
为t时刻储能电站的放电最大功率。In the formula,
Figure BDA0003925216650000047
is the maximum discharge power of the energy storage power station at time t;
Figure BDA0003925216650000048
is the discharge power of the energy storage power station at time t;
Figure BDA0003925216650000049
is the charging power of the energy storage power station at time t;
Figure BDA00039252166500000410
is the maximum discharge power of the energy storage power station at time t.

作为本发明的进一步改进，所述将风电场和储能电站运行模式选择为调频模式或者调峰模式包括：As a further improvement of the present invention, the selection of the operation mode of the wind farm and the energy storage power station as the frequency regulation mode or the peak regulation mode includes:

判断模式标志位Flag是否为1，若Flag＝1，则风电场和储能电站运行模式选择为调峰模式，反之，则选择为调频模式。It is judged whether the mode flag Flag is 1, if Flag=1, the operation mode of the wind farm and the energy storage power station is selected as the peak regulation mode, otherwise, the frequency regulation mode is selected.

一种海上风电消纳和调峰调频的储能能量管理系统，包括：An energy storage energy management system for offshore wind power consumption and peak regulation and frequency regulation, including:

获取模块，用于获取当前时刻风电场运行数据和储能电站荷电状态数据；The obtaining module is used to obtain the operation data of the wind farm and the state of charge data of the energy storage power station at the current moment;

选择模块，用于根据当前时刻风电场运行数据和储能电站荷电状态数据得到海上风电场的限电状态；若限电，海上风电场按限电调度计划出力，储能电站以最大功率充电；若非限电，将风电场和储能电站运行模式选择为调频模式或者调峰模式；The selection module is used to obtain the limited power status of the offshore wind farm according to the current operation data of the wind farm and the state of charge data of the energy storage power station; if the power is limited, the offshore wind farm will output power according to the limited power scheduling plan, and the energy storage power station will charge at the maximum power ;If the power is not limited, select the operation mode of the wind farm and energy storage power station as frequency regulation mode or peak regulation mode;

修正模块，用于根据调频模式或者调峰模式中修正结果修正风电场和储能出力。The correction module is used to correct the wind farm and energy storage output according to the correction results in the frequency regulation mode or the peak regulation mode.

一种电子设备，包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现所述海上风电消纳和调峰调频的储能能量管理方法的步骤。An electronic device, comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program, the offshore wind power accommodation and peak shaving are realized Steps of frequency modulation energy storage energy management method.

一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现所述海上风电消纳和调峰调频的储能能量管理方法的步骤。A computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the energy storage energy management method for offshore wind power accommodation and peak regulation and frequency regulation are realized.

与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:

本发明提出一种提升海上风电调峰调频能力的储能电站能量管理方法，通过实时采集海上风电场各风机输出功率、电流电压和储能电站的荷电状态，调节风电场和储能电站的输出功率以满足海上风电场的调峰调频需求。在离岸电力系统中，不仅通过配置储能电站解决因风力特性导致的风电机组输出功率波动性和间歇性的问题，同时解决海上风电场调峰调频的困难。本发明具有兼顾海上风功率预测误差、检测大容量储能电站荷电状态的功能，从而可以满足海上风电场持续稳定的调峰调频需求。该策略主要结合海上风功率预测结果、海上风功率调峰调频死区、储能电站SOC值，能够对储能电站充放电功率和荷电状态进行实时调控，实现提升海上风电消纳和调峰调频的目的，同时优化了储能电站的能量管理。The present invention proposes an energy management method for an energy storage power station that improves the peak-shaving and frequency-regulating capabilities of offshore wind power. By collecting in real time the output power, current and voltage of each wind turbine in the offshore wind farm and the state of charge of the energy storage power station, the energy of the wind farm and the energy storage power station is adjusted. The output power can meet the peak regulation and frequency regulation requirements of offshore wind farms. In the offshore power system, it not only solves the problem of fluctuation and intermittency of the output power of the wind turbine caused by the characteristics of the wind by configuring the energy storage power station, but also solves the difficulty of peak regulation and frequency regulation of the offshore wind farm. The invention has the functions of taking into account the prediction error of offshore wind power and detecting the state of charge of a large-capacity energy storage power station, so as to meet the continuous and stable demand for peak regulation and frequency regulation of offshore wind farms. This strategy mainly combines the prediction results of offshore wind power, the dead zone of offshore wind power peak regulation and frequency modulation, and the SOC value of energy storage power stations, and can perform real-time regulation on the charging and discharging power and state of charge of energy storage power stations, so as to realize the improvement of offshore wind power consumption and peak regulation. The purpose of frequency regulation, while optimizing the energy management of the energy storage power station.

附图说明Description of drawings

图1为海上风电场拓扑结构示意图；Figure 1 is a schematic diagram of the topology of an offshore wind farm;

图2为本发明控制主要流程图；Fig. 2 is the main flowchart of the control of the present invention;

图3为能量管理调频部分流程图；Figure 3 is a flow chart of the energy management frequency modulation part;

图4为能量管理调峰消纳部分流程图；Figure 4 is a flow chart of the energy management peak regulation and consumption part;

图5为本发明一种海上风电消纳和调峰调频的储能能量管理系统；Fig. 5 is an energy storage energy management system for offshore wind power consumption and peak regulation and frequency regulation according to the present invention;

图6为本发明一种电子设备示意图。Fig. 6 is a schematic diagram of an electronic device of the present invention.

具体实施方式Detailed ways

为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

针对储能电站提升海上风电调峰调频能力等问题，本发明的目的是提供一种提升海上风电消纳和调峰调频的储能能量管理方法，该策略既能够解决海上风电场大规模并入电网时对电网造成的频率扰动问题，也能有效管理海上风电场能量分配和提升调峰调频、电网响应等能力。海上风电场通过合理配置储能电站，将显著提升风力发电的稳定性，优化电网能源消费结构和提升电网可靠性和技术性。Aiming at the problems of improving the peak-shaving and frequency-regulating capabilities of offshore wind power by energy storage power stations, the purpose of the present invention is to provide an energy storage energy management method for improving offshore wind power consumption and peak-shaving and frequency regulation. The frequency disturbance problem caused by the power grid can also effectively manage the energy distribution of offshore wind farms and improve the peak-shaving and frequency modulation and grid response capabilities. The rational allocation of energy storage power stations in offshore wind farms will significantly improve the stability of wind power generation, optimize the energy consumption structure of the power grid, and improve the reliability and technicality of the power grid.

实施例1Example 1

如图2所示，一种海上风电消纳和调峰调频的储能能量管理方法，包括以下步骤：As shown in Figure 2, an energy storage energy management method for offshore wind power consumption and peak regulation and frequency regulation includes the following steps:

(1)能量管理控制策略主要步骤：(1) Main steps of energy management control strategy:

步骤1，获取风电场日前调度数据、当前时刻风电场运行数据和储能电站荷电状态数据(SOC)；Step 1, obtain the scheduling data of the wind farm ahead of time, the operation data of the wind farm at the current moment, and the state of charge (SOC) data of the energy storage power station;

步骤2，判断调度中心是否让海上风电场处于限电状态；若切换至限电模式，则海上风电场按限电调度计划出力，储能电站以最大功率充电；若非切换至限电模式，则进入步骤3；Step 2. Determine whether the dispatch center puts the offshore wind farm in a power-limited state; if it is switched to the power-limited mode, the offshore wind farm will output power according to the power-limited scheduling plan, and the energy storage power station will charge at the maximum power; if it is not switched to the power-limited mode, then Go to step 3;

其中，可选的，判断调度中心是否让海上风电场处于限电状态包括：Wherein, optionally, judging whether the dispatching center puts the offshore wind farm in a state of curtailment includes:

从风电场日前调度数据中得到海上风电场的限电计划和非限电计划，Obtain the curtailment plan and non-restriction plan of the offshore wind farm from the day-ahead scheduling data of the wind farm,

根据当前时刻风电场运行数据和储能电站荷电状态数据判断海上风电场为限电计划或非限电计划，得到海上风电场的限电状态。According to the operation data of the wind farm at the current moment and the state of charge data of the energy storage power station, it is judged whether the offshore wind farm is a power curtailment plan or a non-power curtailment plan, and the power curtailment status of the offshore wind farm is obtained.

步骤3，调节海上风电场调节模式，将风电场和储能电站运行模式选择为调频或者调峰模式，并进入步骤4；Step 3, adjust the adjustment mode of the offshore wind farm, select the operation mode of the wind farm and the energy storage power station as frequency regulation or peak regulation mode, and enter step 4;

步骤4，将两模式中修正结果发送到海上风电场和储能电站处修正其出力情况。Step 4. Send the correction results in the two modes to the offshore wind farm and the energy storage power station to correct their output.

本发明提供的储能能量管理方法，具有兼顾海上风功率预测误差、检测大容量储能电站荷电状态的功能，从而可以满足海上风电场持续稳定的调峰调频需求。该策略主要结合海上风功率预测结果、海上风功率调峰调频死区、储能电站SOC值，能够对储能电站充放电功率和荷电状态进行实时调控，实现提升海上风电消纳和调峰调频的目的，同时优化了储能电站的能量管理。The energy storage energy management method provided by the present invention has the function of taking into account the prediction error of offshore wind power and detecting the state of charge of a large-capacity energy storage power station, so as to meet the continuous and stable peak regulation and frequency regulation requirements of offshore wind farms. This strategy mainly combines the prediction results of offshore wind power, the dead zone of offshore wind power peak regulation and frequency modulation, and the SOC value of energy storage power stations, and can perform real-time regulation on the charging and discharging power and state of charge of energy storage power stations, so as to realize the improvement of offshore wind power consumption and peak regulation. The purpose of frequency regulation, while optimizing the energy management of the energy storage power station.

其中，作为本发明的进一步改进，如图3所示，调频部分包括：Wherein, as a further improvement of the present invention, as shown in Figure 3, the frequency modulation part includes:

步骤21：获取陆上换流站频率数据

Figure BDA0003925216650000071
和风电场调频数据；Step 21: Obtain frequency data of onshore converter stations
Figure BDA0003925216650000071
and wind farm frequency modulation data;

步骤22：通过风电场调频数据计算海上风电场节点处频率测量值

Figure BDA0003925216650000072
Step 22: Calculate the frequency measurement value at the node of the offshore wind farm through the frequency modulation data of the wind farm
Figure BDA0003925216650000072

步骤23：计算海上风电场与陆上换流站的频率差值

Figure BDA0003925216650000073
Step 23: Calculate the frequency difference between the offshore wind farm and the onshore converter station
Figure BDA0003925216650000073

步骤24：判断频率差值是否小于调频死区，若是，则转至步骤25，若否，则转至步骤26；Step 24: judging whether the frequency difference is smaller than the frequency modulation dead zone, if so, then go to step 25, if not, then go to step 26;

步骤25：海上风电场维持原状态，储能电站不动作；Step 25: The offshore wind farm maintains the original state, and the energy storage power station does not operate;

步骤26：判断当前调频需求为短时尖峰需求或长时稳态需求，若当前调频需求为短时尖峰需求，则海上风电场转为分布式集群控制，修正风电场内电机输出功率；若当前调频需求为长时稳态需求，则大容量储能电站采用下垂控制调节电站输出功率；Step 26: Determine whether the current frequency modulation demand is a short-term peak demand or a long-term steady-state demand. If the current frequency modulation demand is a short-time peak demand, the offshore wind farm will switch to distributed cluster control, and the output power of the motors in the wind farm will be corrected; if the current If the frequency regulation demand is a long-term steady-state demand, the large-capacity energy storage power station adopts droop control to adjust the output power of the power station;

步骤7：将上述调节结果反馈给主程序。Step 7: Feedback the above adjustment results to the main program.

其中，作为本发明的进一步改进，如图4所示，调峰消纳部分包括：Wherein, as a further improvement of the present invention, as shown in Figure 4, the peak regulation and accommodation part includes:

步骤31：风电场预测输出功率数据和风电场各节点电压电流数据；Step 31: The predicted output power data of the wind farm and the voltage and current data of each node of the wind farm;

步骤32：根据风电场各节点电压电流数据计算各节点风电场输出功率；Step 32: Calculate the output power of each node of the wind farm according to the voltage and current data of each node of the wind farm;

步骤33：根据各节点风电场输出功率计算海上风电场实际输出功率，其与预测输出功率的差值；Step 33: Calculate the difference between the actual output power of the offshore wind farm and the predicted output power according to the output power of the wind farm at each node;

步骤34：判断实际和预测差值的绝对值是否小于预设调峰死区，若是，则海上风电场按日前预测计划出力；若否，则进入步骤35；Step 34: Determine whether the absolute value of the actual and predicted difference is smaller than the preset peak shaving dead zone, if yes, then the offshore wind farm will output power according to the day-ahead forecast plan; if not, go to step 35;

步骤35：判断当前时刻风电场是否能够自我调峰消纳，若是，则进入步骤36，若否，则进入步骤38；Step 35: Judging whether the wind farm can self-peak adjustment and consumption at the current moment, if so, go to step 36, if not, go to step 38;

步骤36：重新修正风电场各风机的出力因子；Step 36: re-correct the output factors of each fan in the wind farm;

步骤37：根据修正后的出力因子调节各风机的输出功率；Step 37: Adjust the output power of each fan according to the corrected output factor;

步骤38：判断当前时刻大容量储能电站SOC状态(荷电状态)；Step 38: Determine the SOC state (state of charge) of the large-capacity energy storage power station at the current moment;

步骤39：根据上述储能电站SOC状态，修正储能电站输出功率；Step 39: Correct the output power of the energy storage power station according to the above SOC state of the energy storage power station;

步骤310：将上述修正结果反馈回主程序。Step 310: Feedback the above correction result to the main program.

以下结合具体实施例对本发明的方法进行详细说明。The method of the present invention will be described in detail below in conjunction with specific examples.

实施例2Example 2

本发明的能量管理方法是应用于离岸距离较大的海上风电场，同时调节海上风电场内多台风电机组，储能电站采用多类型储能系统。The energy management method of the present invention is applied to offshore wind farms with relatively large offshore distances, and simultaneously adjusts multiple wind turbines in the offshore wind farm, and the energy storage power station adopts multiple types of energy storage systems.

下面结合具体实施步骤，对能量管理方法进行详细说明，如图1所示，海上风电场拓扑结构包含场内的n台风电机组，通过n台海上变压器、n台AC\DC转换、n台DC\DC转换等，将海上风电场的电能通过陆上换流站与陆上储能电站联合发电传输到电网。The following describes the energy management method in detail in conjunction with specific implementation steps. As shown in Figure 1, the topology of an offshore wind farm includes n wind turbines in the field, through n offshore transformers, n AC/DC conversion, and n DC \DC conversion, etc., the electric energy of the offshore wind farm is transmitted to the power grid through the combined power generation of the onshore converter station and the onshore energy storage power station.

如图2所示，能量管理控制策略主要控制包括以下步骤：As shown in Figure 2, the main control of the energy management control strategy includes the following steps:

步骤1风电场日前调度数据、当前时刻风电场运行数据和储能电站荷电状态数据(SOC)；Step 1: Wind farm day-ahead scheduling data, current wind farm operation data and energy storage power station state of charge data (SOC);

步骤2判断调度中心是否让海上风电场处于限电状态；若是，则切换至限电模式，则海上风电场按限电调度计划

Figure BDA0003925216650000091
出力，储能电站以最大功率
Figure BDA0003925216650000092
充电；若否，则进入步骤3；Step 2. Determine whether the dispatching center puts the offshore wind farm in a power-limited state; if so, switch to the power-limited mode, and the offshore wind farm follows the power-limited dispatch plan
Figure BDA0003925216650000091
Output, energy storage power station with maximum power
Figure BDA0003925216650000092
Charging; if not, go to step 3;

步骤3调节海上风电场和大容量储能电站运行模式，判断模式标志位Flag是否为1，若Flag＝1，则风电场和储能电站运行模式选择为调峰模式，反之，则选择为调频模式，并进入步骤4；Step 3 Adjust the operating mode of the offshore wind farm and large-capacity energy storage power station, and judge whether the mode flag Flag is 1. If Flag=1, the operating mode of the wind farm and energy storage power station is selected as the peak regulation mode, otherwise, it is selected as frequency modulation mode, and go to step 4;

步骤4将两模式中修正结果发送到海上风电场和储能电站处修正其出力情况。In step 4, the correction results in the two modes are sent to the offshore wind farm and the energy storage power station to correct their output.

如图3所示，能量管理控制策略的调频部分包括以下步骤：As shown in Figure 3, the frequency modulation part of the energy management control strategy includes the following steps:

步骤21：获取陆上换流站频率数据

Figure BDA0003925216650000093
和风电场调频数据；Step 21: Obtain frequency data of onshore converter stations
Figure BDA0003925216650000093
and wind farm frequency modulation data;

步骤22：通过风电场调频数据计算海上风电场节点处频率测量值

Figure BDA0003925216650000094
Step 22: Calculate the frequency measurement value at the node of the offshore wind farm through the frequency modulation data of the wind farm
Figure BDA0003925216650000094

步骤23：计算海上风电场与陆上换流站的频率差值

Figure BDA0003925216650000095
其中
Figure BDA0003925216650000096
为陆上换流站的频率；Step 23: Calculate the frequency difference between the offshore wind farm and the onshore converter station
Figure BDA0003925216650000095
in
Figure BDA0003925216650000096
is the frequency of the onshore converter station;

步骤24：判断频率差值

Figure BDA0003925216650000097
是否小于调频死区α，若是，则转至步骤5，若否，则转至步骤26；Step 24: Determine the frequency difference
Figure BDA0003925216650000097
Whether it is less than the frequency modulation dead zone α, if so, then go to step 5, if not, then go to step 26;

步骤25：海上风电场按调度计划

Figure BDA0003925216650000098
输出功率，储能电站不动作即
Figure BDA0003925216650000099
Step 25: Offshore Wind Farm According to Dispatch Plan
Figure BDA0003925216650000098
Output power, when the energy storage power station does not operate
Figure BDA0003925216650000099

步骤26：判断当前调频需求为短时尖峰需求或长时稳态需求，若当前调频需求为短时尖峰需求，则海上风电场转为分布式集群控制，修正风电场内各电机输出功率以满足当前时刻调频的短时尖峰需求；若当前调频需求为长时稳态需求，则储能电站采用下垂控制调节其输出功率。Step 26: Determine whether the current frequency modulation demand is a short-term peak demand or a long-term steady-state demand. If the current frequency modulation demand is a short-time peak demand, the offshore wind farm is converted to distributed cluster control, and the output power of each motor in the wind farm is corrected to meet The short-term peak demand of frequency regulation at the current moment; if the current frequency regulation demand is a long-term steady-state demand, the energy storage power station adopts droop control to adjust its output power.

分布式集群控制是将风电场内各机组过根据具体调频需求调节机组输出功率，由于风电机组一般运行在MPPT状态下，所以能够提供多余的调频功率有限，则适用于响应系统的短时尖峰需求；储能电站采用下垂控制，则其控制调节系数δt为：Distributed cluster control is to adjust the output power of each unit in the wind farm according to the specific frequency regulation requirements. Since the wind turbines generally operate in the MPPT state, they can provide limited redundant frequency regulation power, which is suitable for responding to the short-term peak demand of the system. ; The energy storage power station adopts droop control, then its control adjustment coefficient δ t is:

Figure BDA0003925216650000101
Figure BDA0003925216650000101

式中，δt为控制调节系数；

Figure BDA0003925216650000102
为海上风电场与陆上换流站的频率差值；
Figure BDA0003925216650000103
为陆上换流站实时频率；α为一次调频死区；
Figure BDA0003925216650000104
为海上风电场实时频率。In the formula, δt is the control adjustment coefficient;
Figure BDA0003925216650000102
is the frequency difference between the offshore wind farm and the onshore converter station;
Figure BDA0003925216650000103
is the real-time frequency of the onshore converter station; α is the primary frequency modulation dead zone;
Figure BDA0003925216650000104
Real-time frequency for offshore wind farms.

且满足如下约束：And satisfy the following constraints:

-0.1≤δt≤0.1-0.1≤δt ≤0.1

当

Figure BDA0003925216650000105
且δt>0时，修正为：δt＝0，则储能电站的输出功率为：when
Figure BDA0003925216650000105
And when δ t >0, the correction is: δ t = 0, then the output power of the energy storage power station is:

Figure BDA0003925216650000106
Figure BDA0003925216650000106

式中，

Figure BDA0003925216650000107
为储能电站的输出功率；
Figure BDA0003925216650000108
为储能电站的额定功率；In the formula,
Figure BDA0003925216650000107
is the output power of the energy storage power station;
Figure BDA0003925216650000108
is the rated power of the energy storage power station;

步骤7：将上述调节结果反馈给主程序。Step 7: Feedback the above adjustment results to the main program.

如图4所示，能量管理控制策略调峰消纳部分包括以下步骤：As shown in Figure 4, the energy management control strategy peak regulation and consumption part includes the following steps:

步骤31：风电场预测输出功率数据和风电场各节点电压电流数据；Step 31: The predicted output power data of the wind farm and the voltage and current data of each node of the wind farm;

步骤32：根据风电场各节点电压电流数据计算各节点风电场输出功率

Figure BDA0003925216650000109
Step 32: Calculate the output power of each node of the wind farm according to the voltage and current data of each node of the wind farm
Figure BDA0003925216650000109

步骤33：根据各节点风电场输出功率计算海上风电场实际输出功率，其与预测输出功率的差值

Figure BDA00039252166500001010
Step 33: Calculate the actual output power of the offshore wind farm based on the output power of the wind farm at each node, and the difference between it and the predicted output power
Figure BDA00039252166500001010

步骤34：判断实际和预测差值的绝对值

Figure BDA00039252166500001011
是否小于预设调峰死区β，若是，则海上风电场按日前预测计划
Figure BDA00039252166500001012
出力；若否，则进入步骤35；Step 34: Determine the absolute value of the actual and predicted difference
Figure BDA00039252166500001011
Is it less than the preset peak shaving dead zone β? If so, the offshore wind farm will be planned according to the day-ahead forecast
Figure BDA00039252166500001012
output; if not, proceed to step 35;

步骤35：判断当前时刻风电场机组是否能够自我调峰消纳，若是，则进入步骤36，若否，则进入步骤37；Step 35: Judging whether the wind farm unit can self-peak adjustment and consumption at the current moment, if so, go to step 36, if not, go to step 37;

步骤36-1：重新修正风电场各风机的出力因子λi；Step 36-1: re-correct the output factor λ i of each fan in the wind farm;

步骤36-2：根据修正后的出力因子调节各风机的输出功率

Figure BDA0003925216650000111
进入步骤38；Step 36-2: Adjust the output power of each fan according to the corrected output factor
Figure BDA0003925216650000111
Go to step 38;

步骤37-1：判断当前时刻储能电站SOC状态，SOC计算公式如下：Step 37-1: Judging the SOC status of the energy storage power station at the current moment, the SOC calculation formula is as follows:

Figure BDA0003925216650000112
Figure BDA0003925216650000112

式中，

Figure BDA0003925216650000113
为t时刻储能电站的荷电状态；
Figure BDA0003925216650000114
为储能电站初始时刻的荷电状态；Δt为调峰消纳模式数据采样间隔，此处设置为1min；T为一天内总采样数，设置为1440；
Figure BDA0003925216650000115
为储能电站的输出功率；
Figure BDA0003925216650000116
为储能电站额定容量；In the formula,
Figure BDA0003925216650000113
is the state of charge of the energy storage power station at time t;
Figure BDA0003925216650000114
is the state of charge of the energy storage power station at the initial moment; Δt is the data sampling interval of the peak regulation consumption mode, which is set to 1min here; T is the total number of samples in one day, which is set to 1440;
Figure BDA0003925216650000115
is the output power of the energy storage power station;
Figure BDA0003925216650000116
is the rated capacity of the energy storage power station;

设置储能电站的SOC工作范围，避免电站因过充过放而缩短使用寿命，设置范围如下：Set the SOC working range of the energy storage power station to avoid shortening the service life of the power station due to overcharging and overdischarging. The setting range is as follows:

Figure BDA0003925216650000117
Figure BDA0003925216650000117

步骤37-2：根据上述储能电站SOC状态，修正储能电站输出功率

Figure BDA0003925216650000118
将储能电站SOC状态分为4种充放电形式，具体如下：Step 37-2: Correct the output power of the energy storage power station according to the above SOC state of the energy storage power station
Figure BDA0003925216650000118
The SOC state of the energy storage power station is divided into four charging and discharging forms, as follows:

Figure BDA0003925216650000119
Figure BDA0003925216650000119

式中，

Figure BDA00039252166500001110
为t时刻储能电站的放电最大功率；
Figure BDA00039252166500001111
为t时刻储能电站的放电功率；
Figure BDA00039252166500001112
为t时刻储能电站的充电功率；
Figure BDA00039252166500001113
为t时刻储能电站的放电最大功率；In the formula,
Figure BDA00039252166500001110
is the maximum discharge power of the energy storage power station at time t;
Figure BDA00039252166500001111
is the discharge power of the energy storage power station at time t;
Figure BDA00039252166500001112
is the charging power of the energy storage power station at time t;
Figure BDA00039252166500001113
is the maximum discharge power of the energy storage power station at time t;

步骤38：将上述修正结果反馈回主程序。Step 38: Feedback the above correction results to the main program.

采用上述技术方案，本发明具有对海上风电场削峰填谷和主动支撑的作用，储能电站不仅能够响应海上风电场对电网频率的调节需求，也能够满足陆上电网对调峰消纳的需求。其次本发明具有储能电站的快充快放的特点，能够迅速响应电网对海上风电场的调峰调频等的需求，而且能够解决海上风电场大规模并入电网时对电网造成的频率扰动。海上风电场通过合理配置储能电站，将显著提升风力发电的稳定性，优化电网能源消费结构和提升电网可靠性和技术性。By adopting the above-mentioned technical scheme, the present invention has the function of peak-shaving and valley-filling and active support for offshore wind farms. The energy storage power station can not only respond to the adjustment requirements of the offshore wind farm for the frequency of the power grid, but also meet the requirements of the on-shore power grid for peak regulation and accommodation. need. Secondly, the invention has the characteristics of fast charging and fast discharging of energy storage power stations, can quickly respond to the demand of the power grid for peak regulation and frequency modulation of offshore wind farms, and can solve the frequency disturbance caused by large-scale integration of offshore wind farms into the power grid. The rational allocation of energy storage power stations in offshore wind farms will significantly improve the stability of wind power generation, optimize the energy consumption structure of the power grid, and improve the reliability and technicality of the power grid.

如图5所示，本发明还提供一种海上风电消纳和调峰调频的储能能量管理系统，包括：As shown in Figure 5, the present invention also provides an energy storage energy management system for offshore wind power consumption and peak regulation and frequency regulation, including:

获取模块，用于获取当前时刻风电场运行数据和储能电站荷电状态数据；The obtaining module is used to obtain the operation data of the wind farm and the state of charge data of the energy storage power station at the current moment;

选择模块，用于根据当前时刻风电场运行数据和储能电站荷电状态数据得到海上风电场的限电状态；若限电，海上风电场按限电调度计划出力，储能电站以最大功率充电；若非限电，将风电场和储能电站运行模式选择为调频模式或者调峰模式；The selection module is used to obtain the limited power status of the offshore wind farm according to the current operation data of the wind farm and the state of charge data of the energy storage power station; if the power is limited, the offshore wind farm will output power according to the limited power scheduling plan, and the energy storage power station will charge at the maximum power ;If the power is not limited, select the operation mode of the wind farm and energy storage power station as frequency regulation mode or peak regulation mode;

修正模块，用于根据调频模式或者调峰模式中修正结果修正风电场和储能出力。The correction module is used to correct the wind farm and energy storage output according to the correction results in the frequency regulation mode or the peak regulation mode.

其中，选择模块包括调频模块和调峰模块；Wherein, the selection module includes a frequency modulation module and a peak regulation module;

所述调频模块包括：The frequency modulation module includes:

第一获取单元，用于获取陆上换流站频率数据

Figure BDA0003925216650000121
和风电场调频数据；The first acquisition unit is used to acquire the frequency data of the onshore converter station
Figure BDA0003925216650000121
and wind farm frequency modulation data;

第一计算单元，用于通过风电场调频数据计算海上风电场节点处频率测量值

Figure BDA0003925216650000122
计算海上风电场与陆上换流站的频率差值
Figure BDA0003925216650000123
The first calculation unit is used to calculate the frequency measurement value at the node of the offshore wind farm through the frequency modulation data of the wind farm
Figure BDA0003925216650000122
Calculation of frequency difference between offshore wind farm and onshore converter station
Figure BDA0003925216650000123

第一控制单元，用于比较频率差值是否小于调频死区，若是，则海上风电场维持原状态，储能电站不动作；若否，则判断当前调频需求为短时尖峰需求或长时稳态需求，若当前调频需求为短时尖峰需求，则海上风电场转为分布式集群控制，修正风电场内电机输出功率；若当前调频需求为长时稳态需求，则大容量储能电站采用下垂控制调节电站输出功率；The first control unit is used to compare whether the frequency difference is smaller than the frequency modulation dead zone. If yes, the offshore wind farm maintains the original state, and the energy storage power station does not operate; If the current frequency regulation demand is a short-term peak demand, the offshore wind farm will switch to distributed cluster control to correct the output power of the motor in the wind farm; if the current frequency regulation demand is a long-term steady-state demand, the large-capacity energy storage power station will use Droop control to adjust the output power of the power station;

第一输出单元，用于输出调频模式调节结果。The first output unit is configured to output the adjustment result of the frequency modulation mode.

所述调峰模块包括：The peak regulation module includes:

第二获取单元，风电场预测输出功率数据和风电场各节点电压电流数据；The second acquisition unit is the predicted output power data of the wind farm and the voltage and current data of each node of the wind farm;

第二计算单元，用于根据风电场各节点电压电流数据计算各节点风电场输出功率；根据各节点风电场输出功率计算海上风电场实际输出功率，其与预测输出功率的差值；The second calculation unit is used to calculate the output power of each node wind farm according to the voltage and current data of each node of the wind farm; calculate the actual output power of the offshore wind farm according to the output power of each node wind farm, and the difference between it and the predicted output power;

第二控制单元，用于判断实际和预测差值的绝对值是否小于预设调峰死区，若是，则海上风电场按日前预测计划出力；若否，判断当前时刻风电场是否能够自我调峰消纳；若是，重新修正风电场各风机的出力因子，根据修正后的出力因子调节各风机的输出功率；若否，则判断当前时刻大容量储能电站SOC状态；根据上述储能电站SOC状态，修正储能电站输出功率；The second control unit is used to judge whether the absolute value of the actual and predicted difference is smaller than the preset peak-shaving dead zone, if so, the offshore wind farm will output power according to the day-ahead forecast plan; if not, judge whether the wind farm can self-peak-shaving at the current moment consumption; if yes, re-correct the output factor of each fan in the wind farm, and adjust the output power of each fan according to the revised output factor; if not, judge the SOC status of the large-capacity energy storage power station at the current moment; , correct the output power of the energy storage power station;

第二输出单元，用于输出调峰模式调节结果。The second output unit is used to output the adjustment result of the peak regulation mode.

如图6所示，本发明提供一种电子设备，包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现所述海上风电消纳和调峰调频的储能能量管理方法的步骤。As shown in FIG. 6, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the computer program is implemented. The steps of the energy storage energy management method for offshore wind power accommodation and peak regulation and frequency regulation.

所述海上风电消纳和调峰调频的储能能量管理方法包括以下步骤：The energy storage energy management method for offshore wind power consumption and peak regulation and frequency regulation includes the following steps:

获取风电场日前调度数据、当前时刻运行数据和储能电站状态数据；Obtain the day-ahead scheduling data of the wind farm, the current operation data and the status data of the energy storage power station;

得到海上风电场的限电计划，若限电，海上风电场按限电调度计划出力，储能电站以最大功率充电；若非限电，将风电场和储能电站运行模式选择为调频或者调峰模式；Obtain the power limit plan of the offshore wind farm. If there is a power limit, the offshore wind farm will output power according to the power limit dispatch plan, and the energy storage power station will charge at the maximum power; if there is no power limit, select the operation mode of the wind farm and the energy storage power station as frequency regulation or peak regulation model;

根据调频或者调峰模式中修正结果修正风电场和储能出力。Correct the output of wind farms and energy storage according to the correction results in frequency regulation or peak regulation mode.

本发明第还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现所述海上风电消纳和调峰调频的储能能量管理方法的步骤。The present invention also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the energy storage and energy management of the offshore wind power consumption and peak regulation and frequency regulation are realized. method steps.

所述海上风电消纳和调峰调频的储能能量管理方法包括以下步骤：The energy storage energy management method for offshore wind power consumption and peak regulation and frequency regulation includes the following steps:

获取风电场日前调度数据、当前时刻运行数据和储能电站状态数据；Obtain the day-ahead scheduling data of the wind farm, the current operation data and the status data of the energy storage power station;

得到海上风电场的限电计划，若限电，海上风电场按限电调度计划出力，储能电站以最大功率充电；若非限电，将风电场和储能电站运行模式选择为调频或者调峰模式；Obtain the power limit plan of the offshore wind farm. If there is a power limit, the offshore wind farm will output power according to the power limit dispatch plan, and the energy storage power station will charge at the maximum power; if there is no power limit, select the operation mode of the wind farm and the energy storage power station as frequency regulation or peak regulation model;

根据调频或者调峰模式中修正结果修正风电场和储能出力。Correct the output of wind farms and energy storage according to the correction results in frequency regulation or peak regulation mode.

本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参照上述实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者等同替换，而未脱离本发明精神和范围的任何修改或者等同替换，其均应涵盖在本发明的权利要求保护范围之内。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (11)

1. An energy storage energy management method for offshore wind power absorption and peak regulation and frequency modulation is characterized by comprising the following steps:
acquiring the current wind power plant operation data and the energy storage power station charge state data;
obtaining the power limiting state of the offshore wind farm according to the current wind farm operation data and the energy storage power station charge state data; if the power is limited, the offshore wind farm outputs power according to the power limiting scheduling plan, and the energy storage power station is charged at the maximum power; if the power is not limited, the operation modes of the wind power plant and the energy storage power station are selected to be a frequency modulation mode or a peak regulation mode;
and correcting the output of the wind power plant and the stored energy according to the correction result in the frequency modulation mode or the peak regulation mode.
2. The offshore wind power consumption and peak shaving frequency modulation energy storage energy management method according to claim 1, wherein the obtaining of the power limiting state of the offshore wind farm according to the current wind farm operation data and the energy storage power station state of charge data comprises:
obtaining a power limit plan and a non-power limit plan of an offshore wind farm from the day-ahead scheduling data of the wind farm,
and judging whether the offshore wind farm is in a power limiting plan or a non-power limiting plan according to the current wind farm operation data and the energy storage power station charge state data to obtain the power limiting state of the offshore wind farm.
3. The offshore wind power consumption and peak shaving frequency modulation stored energy management method of claim 1, wherein the frequency modulation mode comprises:
obtaining frequency data for land based converter stations
Figure FDA0003925216640000011
Frequency modulation data of a wind farm;
calculating frequency measurement value at offshore wind farm node through wind farm frequency modulation data
Figure FDA0003925216640000012
Calculating the frequency difference between the offshore wind farm and the onshore converter station
Figure FDA0003925216640000013
Comparing whether the frequency difference is smaller than the frequency modulation dead zone, if so, maintaining the original state of the offshore wind farm, and not operating the energy storage power station; if not, judging that the current frequency modulation requirement is a short-time peak requirement or a long-time steady-state requirement, if the current frequency modulation requirement is the short-time peak requirement, converting the offshore wind farm into distributed cluster control, and correcting the output power of the motor in the wind farm; if the current frequency modulation requirement is a long-term steady-state requirement, the high-capacity energy storage power station adopts droop control to adjust the output power of the power station;
and outputting the frequency modulation mode adjustment result.
4. The offshore wind power consumption and peak and frequency modulation energy storage energy management method according to claim 3, characterized in that the high-capacity energy storage power station adopts droop control to adjust the output power of the power station and control the adjustment coefficient delta t Comprises the following steps:
Figure FDA0003925216640000021
in the formula, delta t To control the adjustment factor;
Figure FDA0003925216640000022
the difference value of the real-time frequency and the power frequency is obtained;
Figure FDA0003925216640000023
is a real-time frequency; alpha is a primary frequency modulation dead zone;
Figure FDA0003925216640000024
the power frequency of the power grid is obtained;
and satisfies the following constraints:
-0.1≤δ t ≤0.1
when in use
Figure FDA0003925216640000025
And delta t >At 0, the correction is: delta t And =0, the output power of the energy storage power station is:
Figure FDA0003925216640000026
in the formula (I), the compound is shown in the specification,
Figure FDA0003925216640000027
the output power of the energy storage power station;
Figure FDA0003925216640000028
the rated power of the energy storage power station.
5. The offshore wind power consumption and peak shaving frequency modulation stored energy management method of claim 1, wherein the peak shaving mode comprises:
obtaining voltage and current data of each node of the wind power plant;
calculating the output power of the wind power plant of each node according to the voltage and current data of each node of the wind power plant; calculating the actual output power of the offshore wind farm according to the output power of the wind farm at each node to obtain the difference value between the actual output power and the predicted output power of the offshore wind farm;
judging whether the absolute value of the actual difference value and the predicted difference value is smaller than a preset peak-shaving dead zone, if so, outputting the output of the offshore wind farm according to a day-ahead prediction plan; if not, judging whether the wind power plant can adjust the peak to be consumed at the current moment or not; if so, revising the output factor of each fan in the wind power plant, and adjusting the output power of each fan according to the revised output factor; if not, judging the SOC state of the high-capacity energy storage power station at the current moment; correcting the output power of the energy storage power station according to the SOC state of the energy storage power station;
and outputting a peak shaving mode adjusting result.
6. The offshore wind power consumption and peak shaving frequency modulation energy storage energy management method according to claim 5, wherein the SOC state of the large-capacity energy storage power station at the current moment is judged, and the SOC calculation formula is as follows:
Figure FDA0003925216640000031
in the formula (I), the compound is shown in the specification,
Figure FDA0003925216640000032
the state of charge of the energy storage power station at the moment t;
Figure FDA0003925216640000033
the state of charge of the energy storage power station at the initial moment is obtained; delta t is a data sampling interval of the peak regulation and absorption mode; t is the total number of samples in one day;
Figure FDA0003925216640000034
is the output power of the energy storage power station;
Figure FDA0003925216640000035
rated capacity for the energy storage power station;
the SOC working range of the energy storage power station is set, the phenomenon that the service life of the power station is shortened due to overcharge and overdischarge is avoided, and the setting range is as follows:
Figure FDA0003925216640000036
7. the offshore wind power consumption and peak shaving frequency modulation energy storage energy management method according to claim 5, characterized in that said energy storage power station output power is corrected according to said energy storage power station SOC state,
the SOC state of the energy storage power station is divided into 4 charging and discharging forms, which are as follows:
Figure FDA0003925216640000037
in the formula (I), the compound is shown in the specification,
Figure FDA0003925216640000038
the maximum discharge power of the energy storage power station at the moment t;
Figure FDA0003925216640000039
the discharge power of the energy storage power station at the moment t;
Figure FDA00039252166400000310
the charging power of the energy storage power station at the moment t;
Figure FDA00039252166400000311
the maximum discharge power of the energy storage power station at the moment t.
8. The offshore wind power consumption and peak shaving frequency modulation energy storage energy management method of claim 1, wherein said selecting a wind farm and energy storage power plant operating mode as a frequency modulation mode or a peak shaving mode comprises:
and judging whether the mode Flag bit Flag is 1, if Flag =1, selecting the operation mode of the wind power plant and the energy storage power station as a peak shaving mode, and otherwise, selecting the operation mode as a frequency modulation mode.
9. The utility model provides an energy storage energy management system of marine wind power consumption and peak shaving frequency modulation which characterized in that includes:
the acquisition module is used for acquiring the operation data of the wind power plant at the current moment and the charge state data of the energy storage power station;
the selection module is used for obtaining the electricity limiting state of the offshore wind farm according to the current wind farm operation data and the energy storage power station charge state data; if the power is limited, the offshore wind farm outputs power according to the power-limiting dispatching plan, and the energy storage power station is charged with the maximum power; if the power is not limited, the operation modes of the wind power plant and the energy storage power station are selected to be a frequency modulation mode or a peak regulation mode;
and the correction module is used for correcting the wind power plant and the stored energy output according to the correction result in the frequency modulation mode or the peak regulation mode.
10. An electronic device comprising a memory, a processor and a computer program stored in said memory and executable on said processor, said processor implementing the steps of the method for offshore wind power consumption and peak shaving energy management according to any of claims 1-8 when executing said computer program.
11. A computer-readable storage medium, having stored thereon a computer program for implementing the steps of the method for offshore wind power consumption and peak and frequency modulation stored energy management according to any of claims 1-8 when being executed by a processor.
CN202211370155.5A 2022-11-03 2022-11-03 Energy storage energy management method and system for offshore wind power absorption and peak shaving frequency modulation Pending CN115764939A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116632880A (en) * 2023-07-25 2023-08-22 深圳量云能源网络科技有限公司 Multifunctional coordination control method and device for wind farm energy storage system and terminal equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116632880A (en) * 2023-07-25 2023-08-22 深圳量云能源网络科技有限公司 Multifunctional coordination control method and device for wind farm energy storage system and terminal equipment
CN116632880B (en) * 2023-07-25 2024-04-30 深圳量云能源网络科技有限公司 Multifunctional coordination control method and device for wind farm energy storage system and terminal equipment

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