CN115146872A - Method, device, equipment and medium for flexible aggregation of adjustable resources in distribution network - Google Patents

Method, device, equipment and medium for flexible aggregation of adjustable resources in distribution network Download PDF

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CN115146872A
CN115146872A CN202210903140.4A CN202210903140A CN115146872A CN 115146872 A CN115146872 A CN 115146872A CN 202210903140 A CN202210903140 A CN 202210903140A CN 115146872 A CN115146872 A CN 115146872A
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胡泽春
文艺林
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Abstract

The application relates to the technical field of flexible resource aggregation, in particular to a flexible aggregation method, a device, equipment and a medium for adjustable resources in a power distribution network, wherein the method comprises the following steps: determining flexible resources on each node in the power distribution network; constructing a feasible region aggregation model of the power distribution network according to preset safety constraint conditions of the power distribution network and flexible resources on each node; and calculating at least one safety constraint parameter of the feasible region aggregation model according to the expected target of the linear power flow constraint, and optimizing the feasible region aggregation model based on the at least one safety constraint parameter so as to perform linear power flow safety constraint on the power distribution network by using the optimized feasible region aggregation model. Therefore, the problems that the aggregation feasible domain of the flexible resources in the distribution network is not comprehensively considered, the flexibility of the flexible resources cannot be utilized to the maximum extent, the economical efficiency and the safety of the operation of the whole network are reduced, and the like in the related technology are solved.

Description

配电网中可调资源的灵活性聚合方法、装置、设备及介质Method, device, equipment and medium for flexible aggregation of adjustable resources in distribution network

技术领域technical field

本申请涉及灵活资源聚合技术领域，特别涉及一种配电网中可调资源的灵活性聚合方法、装置、设备及介质。The present application relates to the technical field of flexible resource aggregation, and in particular, to a method, device, equipment and medium for flexible aggregation of adjustable resources in a power distribution network.

背景技术Background technique

风电光伏等间歇性可再生能源的高比例渗透增加了对电网调节能力的需求，在这一背景下，电网不能再仅依靠传统机组的调节作用，发挥需求侧灵活资源的调节能力势在必行。一些典型的需求侧灵活资源包括分布式发电，电动汽车，分布式储能，热控负荷等。需求侧灵活资源参与电网调控，可以保障电网的安全稳定运行，促进新能源消纳，以及减少用户用电成本。由于在电网调度时考虑所有需求侧资源的参数过于复杂，并且不利于保护电力用户的隐私，所以需求侧灵活资源需要聚合后参与电网调控。在这种模式下，首先由灵活资源聚合商向配电网运营商提交总功率的可行域，配电网运营商考虑其所辖范围内所有聚合商上报的可行域以及配网的安全约束，计算得到配电网的总功率的可行域上报给主网运营商。出清或调度计算完成后，每个配电网的总功率确定，这一总功率在被逐层分配到每个灵活资源上执行。因此，需要精确地构建配网中灵活资源的聚合灵活性模型，以确保分配的顺利进行，且不应导致过大的计算复杂度。The high penetration of intermittent renewable energy sources such as wind power and photovoltaics has increased the demand for grid regulation capabilities. In this context, the grid can no longer rely solely on the regulation role of traditional units, and it is imperative to give full play to the regulation capacity of flexible resources on the demand side. . Some typical demand-side flexible resources include distributed generation, electric vehicles, distributed energy storage, thermally controlled loads, etc. The participation of flexible resources on the demand side in grid regulation can ensure the safe and stable operation of the grid, promote new energy consumption, and reduce electricity costs for users. Since the parameters of all demand-side resources considered during grid scheduling are too complex and are not conducive to protecting the privacy of power users, demand-side flexible resources need to be aggregated to participate in grid regulation. In this mode, the flexible resource aggregator first submits the feasible region of the total power to the distribution network operator, and the distribution network operator considers the feasible region reported by all aggregators within its jurisdiction and the security constraints of the distribution network. Calculate the feasible area of the total power of the distribution network and report it to the main network operator. After the clearing or scheduling calculation is completed, the total power of each distribution network is determined, and this total power is allocated to each flexible resource layer by layer. Therefore, it is necessary to accurately build an aggregation flexibility model of flexible resources in the distribution network to ensure smooth allocation without causing excessive computational complexity.

现行的市场规则对配网中灵活资源的聚合可行域考虑比较简单。例如PJM电力线市场是仅考虑功率的上下调整边界。华北市场对储能、V2G充电桩考虑功率和能量容量，对普通充电桩、电采暖等可控负荷仅考虑功率调节容量。这些方法描述的可行域一般都与实际的聚合可行域差距较大。已有的文献中对计算配网中灵活资源的聚合可行域已经达成了共识，即这是一个求高维空间多面体的闵可夫斯基和或求高维空间可行域投影的问题，一般情况下没有高效的算法。现有文献的研究往往集中在从内部或外部近似这一可行域，没有精确聚合可行域的建模方法和计算方法。The current market rules are relatively simple to consider the feasible region of aggregation of flexible resources in the distribution network. For example, the PJM powerline market is an upper and lower adjustment boundary that only considers power. The North China market considers power and energy capacity for energy storage and V2G charging piles, and only considers power regulation capacity for controllable loads such as ordinary charging piles and electric heating. The feasible regions described by these methods are generally far from the actual aggregated feasible regions. In the existing literature, a consensus has been reached on the aggregation feasible region of flexible resources in the computing distribution network, that is, it is a problem of finding the Minkowski sum of polyhedra in high-dimensional space or finding the feasible region projection of high-dimensional space. Generally, there is no problem. Efficient algorithm. The research in the existing literature often focuses on approximating this feasible region from the inside or the outside, and there is no modeling method and calculation method for accurately aggregating the feasible region.

发明内容SUMMARY OF THE INVENTION

本申请提供一种配电网中可调资源的灵活性聚合方法、装置、设备及介质，以解决现行的市场规则对配网中灵活资源的聚合可行域考虑不全面，无法最大化地利用灵活资源的灵活性，降低了全网运行的经济性和安全性等问题。The present application provides a flexible aggregation method, device, equipment and medium of adjustable resources in a distribution network, so as to solve the problem that the current market rules do not fully consider the feasible domain of the aggregation of flexible resources in the distribution network, and cannot maximize the use of flexible resources. The flexibility of resources reduces the economy and security of the entire network operation.

本申请第一方面实施例提供一种配电网中可调资源的灵活性聚合方法，包括以下步骤：确定配电网中各个节点上的灵活资源；根据所述配电网的预设安全约束条件和所述各个节点上的灵活资源构建所述配电网的可行域聚合模型；根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，以利用优化后的可行域聚合模型对所述配电网进行线性潮流安全约束。An embodiment of the first aspect of the present application provides a flexible aggregation method for adjustable resources in a distribution network, including the following steps: determining flexible resources on each node in the distribution network; according to preset security constraints of the distribution network condition and flexible resources on each node to construct a feasible domain aggregation model of the distribution network; calculate at least one safety constraint parameter of the feasible domain aggregation model according to the expected target of linear power flow constraints, based on the at least one safety constraint Parameter optimization of the feasible region aggregation model, so as to perform linear power flow safety constraints on the distribution network by using the optimized feasible region aggregation model.

可选地，在本申请的一个实施例中，所述根据所述配电网的预设安全约束条件和所述各个节点上的灵活资源构建所述配电网的可行域聚合模型，包括：根据预设时间间隔将预设时间窗划分为多个时间段；根据每个节点上灵活资源在每个时间段的边界参数构建所述每个节点上灵活资源的聚合可行域；根据预设配网安全约束和预设线性配网潮流方程聚合所述每个节点上灵活资源的聚合可行域，得到所述配电网的可行域聚合模型。Optionally, in an embodiment of the present application, the construction of a feasible domain aggregation model of the distribution network according to preset security constraints of the distribution network and flexible resources on each node includes: Divide the preset time window into multiple time periods according to the preset time interval; construct the aggregate feasible region of the flexible resources on each node according to the boundary parameters of the flexible resources on each node in each time period; according to the preset configuration Network security constraints and preset linear distribution network power flow equations aggregate the aggregated feasible regions of the flexible resources on each node to obtain an aggregated feasible region model of the distribution network.

可选地，在本申请的一个实施例中，所述可行域聚合模型的表达公式为：Optionally, in an embodiment of the present application, the expression formula of the feasible domain aggregation model is:

Figure BDA0003771621950000021
Figure BDA0003771621950000021

其中，X0表示所述可行域聚合模型，t是时间段下标，

Figure BDA0003771621950000022
表示所有时间段的集合，T表示时间段的总数量，
Figure BDA0003771621950000023
表示根节点处的有功功率，
Figure BDA0003771621950000024
是
Figure BDA0003771621950000025
的任意子集，
Figure BDA0003771621950000026
和
Figure BDA0003771621950000027
分别表示功率
Figure BDA0003771621950000028
在时间段集合
Figure BDA0003771621950000029
上积分的上下界，上标n表示节点功率，
Figure BDA00037716219500000210
表示由
Figure BDA00037716219500000211
构成的T维列向量。Among them, X 0 represents the feasible domain aggregation model, t is the subscript of the time period,
Figure BDA0003771621950000022
represents the set of all time periods, T represents the total number of time periods,
Figure BDA0003771621950000023
represents the active power at the root node,
Figure BDA0003771621950000024
Yes
Figure BDA0003771621950000025
any subset of ,
Figure BDA0003771621950000026
and
Figure BDA0003771621950000027
power respectively
Figure BDA0003771621950000028
collection in time
Figure BDA0003771621950000029
The upper and lower bounds of the upper integral, the superscript n represents the node power,
Figure BDA00037716219500000210
represented by
Figure BDA00037716219500000211
Consists of a T-dimensional column vector.

可选地，在本申请的一个实施例中，所述线性潮流约束的期望目标包括第一线性潮流约束目标和第二线性潮流约束目标。Optionally, in an embodiment of the present application, the desired target of the linear power flow constraint includes a first linear power flow constraint target and a second linear power flow constraint target.

可选地，在本申请的一个实施例中，当所述线性潮流约束的期望目标为所述第一线性潮流约束目标时，所述根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，包括：Optionally, in an embodiment of the present application, when the expected target of the linear power flow constraint is the first linear power flow constraint target, the calculation of the feasible domain aggregation model according to the expected target of the linear power flow constraint is performed. At least one security constraint parameter, optimizing the feasible domain aggregation model based on the at least one security constraint parameter, including:

将配网中所有变量的可行域均转化为

Figure BDA00037716219500000212
其中，n是变量的编号，xn,t是潮流方程中的第n个变量在时段t的值，xn表示由xn,t构成的T维列向量；The feasible regions of all variables in the distribution network are transformed into
Figure BDA00037716219500000212
Among them, n is the number of the variable, x n, t is the value of the nth variable in the power flow equation in the time period t, x n represents the T-dimensional column vector composed of x n, t ;

对于目标集合

Figure BDA00037716219500000213
的非空子集
Figure BDA00037716219500000214
使得
Figure BDA00037716219500000215
Figure BDA00037716219500000216
满足约束：
Figure BDA00037716219500000217
和潮流约束
Figure BDA00037716219500000218
其中，m是等式的编号，am,n是xn,t在第m个等式中的系数；for the target set
Figure BDA00037716219500000213
nonempty subset of
Figure BDA00037716219500000214
make
Figure BDA00037716219500000215
Figure BDA00037716219500000216
Satisfy the constraints:
Figure BDA00037716219500000217
and current constraints
Figure BDA00037716219500000218
where m is the equation number and a m,n is the coefficient of x n,t in the mth equation;

根据第一优化公式计算安全约束参数

Figure BDA00037716219500000219
和
Figure BDA00037716219500000220
所述第一优化公式为：
Figure BDA0003771621950000031
其中，
Figure BDA0003771621950000032
是
Figure BDA0003771621950000033
的最小值，
Figure BDA0003771621950000034
是
Figure BDA0003771621950000035
的最大值，s.t.表示约束条件；Calculate the safety constraint parameters according to the first optimization formula
Figure BDA00037716219500000219
and
Figure BDA00037716219500000220
The first optimization formula is:
Figure BDA0003771621950000031
in,
Figure BDA0003771621950000032
Yes
Figure BDA0003771621950000033
the minimum value of ,
Figure BDA0003771621950000034
Yes
Figure BDA0003771621950000035
The maximum value of , st represents the constraints;

根据所述安全约束参数

Figure BDA0003771621950000036
和
Figure BDA0003771621950000037
优化所述可行域聚合模型。According to the safety constraint parameters
Figure BDA0003771621950000036
and
Figure BDA0003771621950000037
The feasible domain aggregation model is optimized.

可选地，在本申请的一个实施例中，当所述线性潮流约束的期望目标为所述第二线性潮流约束目标时，所述根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，包括：Optionally, in an embodiment of the present application, when the expected target of the linear power flow constraint is the second linear power flow constraint target, the calculation of the feasible domain aggregation model according to the expected target of the linear power flow constraint is performed. At least one security constraint parameter, optimizing the feasible domain aggregation model based on the at least one security constraint parameter, including:

根据以下公式计算潮流转移分布因子描述的配网潮流约束：The distribution network power flow constraints described by the power flow transfer distribution factor are calculated according to the following formula:

Figure BDA0003771621950000038
Figure BDA0003771621950000038

Figure BDA0003771621950000039
Figure BDA0003771621950000039

Figure BDA00037716219500000310
Figure BDA00037716219500000310

Figure BDA00037716219500000311
Figure BDA00037716219500000311

Figure BDA00037716219500000312
Figure BDA00037716219500000312

其中，

Figure BDA00037716219500000313
是支路l在时段t的有功增量，
Figure BDA00037716219500000314
是节点i的有功增量，
Figure BDA00037716219500000315
是支路l的基准功率，
Figure BDA00037716219500000316
是节点i的基准功率，sl,i是支路l关于节点i的潮流转移分布因子，意为节点i的功率增加1个单位使得支路l功率的增量，
Figure BDA00037716219500000317
是配网中所有节点的集合，
Figure BDA00037716219500000318
是去掉平衡节点后的节点集合，
Figure BDA00037716219500000319
是含灵活资源聚合商的节点集合，
Figure BDA00037716219500000320
是配网支路的集合，
Figure BDA00037716219500000321
和
Figure BDA00037716219500000322
分别是由
Figure BDA00037716219500000323
和
Figure BDA00037716219500000324
构成的T维列向量，
Figure BDA00037716219500000325
表示灵活资源聚合商节点处的功率可行域；in,
Figure BDA00037716219500000313
is the active power increment of branch l in time period t,
Figure BDA00037716219500000314
is the active power increment of node i,
Figure BDA00037716219500000315
is the reference power of branch l,
Figure BDA00037716219500000316
is the reference power of node i, s l,i is the power flow transfer distribution factor of branch l about node i, which means that the power of node i increases by 1 unit to make the power of branch l increase,
Figure BDA00037716219500000317
is the set of all nodes in the distribution network,
Figure BDA00037716219500000318
is the set of nodes after removing the balance node,
Figure BDA00037716219500000319
is a set of nodes with flexible resource aggregators,
Figure BDA00037716219500000320
is a collection of distribution network branches,
Figure BDA00037716219500000321
and
Figure BDA00037716219500000322
respectively by
Figure BDA00037716219500000323
and
Figure BDA00037716219500000324
Constitute a T-dimensional column vector,
Figure BDA00037716219500000325
represents the power feasible region at the flexible resource aggregator node;

根据所述潮流转移分布因子描述的配网潮流约束从叶节点沿道路不断根据支路的传输容量修正可行域直到根节点，得到安全约束参数，其中，每次修正进行比较和求和运算；基于所述安全约束参数优化所述可行域聚合模型。According to the power flow constraint of the distribution network described by the power flow transfer distribution factor, the feasible region is continuously modified from the leaf node along the road to the root node according to the transmission capacity of the branch, and the safety constraint parameter is obtained. The security constraint parameter optimizes the feasible region aggregation model.

本申请第二方面实施例提供一种配电网中可调资源的灵活性聚合装置，包括：确定模块，用于确定配电网中各个节点上的灵活资源；构建模块，用于根据所述配电网的预设安全约束条件和所述各个节点上的灵活资源构建所述配电网的可行域聚合模型；约束模块，用于根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，以利用优化后的可行域聚合模型对所述配电网进行线性潮流安全约束。An embodiment of the second aspect of the present application provides an apparatus for flexibility aggregation of adjustable resources in a distribution network, including: a determination module for determining flexible resources on each node in the distribution network; a construction module for The preset safety constraints of the distribution network and the flexible resources on each node construct a feasible domain aggregation model of the distribution network; the constraint module is used to calculate the feasible domain aggregation model according to the expected target of the linear power flow constraint. At least one safety constraint parameter, and the feasible region aggregation model is optimized based on the at least one safety constraint parameter, so as to use the optimized feasible region aggregation model to perform linear power flow safety constraints on the power distribution network.

可选地，在本申请的一个实施例中，所述构建模块，进一步用于根据预设时间间隔将预设时间窗划分为多个时间段，根据每个节点上灵活资源在每个时间段的边界参数构建所述每个节点上灵活资源的聚合可行域；根据预设配网安全约束和预设线性配网潮流方程聚合所述每个节点上灵活资源的聚合可行域，得到所述配电网的可行域聚合模型。Optionally, in an embodiment of the present application, the building module is further configured to divide the preset time window into multiple time periods according to the preset time interval, and according to the flexible resources on each node, in each time period The boundary parameters are used to construct an aggregate feasible region of flexible resources on each node; the aggregation feasible region of flexible resources on each node is aggregated according to preset distribution network security constraints and preset linear distribution network power flow equations to obtain the distribution network. A Feasible Domain Aggregation Model of the Power Grid.

可选地，在本申请的一个实施例中，所述可行域聚合模型的表达公式为：Optionally, in an embodiment of the present application, the expression formula of the feasible domain aggregation model is:

Figure BDA0003771621950000041
Figure BDA0003771621950000041

其中，X0表示所述可行域聚合模型，t是时间段下标，

Figure BDA0003771621950000042
表示所有时间段的集合，T表示时间段的总数量，
Figure BDA0003771621950000043
表示根节点处的有功功率，
Figure BDA0003771621950000044
是
Figure BDA0003771621950000045
的任意子集，
Figure BDA0003771621950000046
和
Figure BDA0003771621950000047
分别表示功率
Figure BDA0003771621950000048
在时间段集合
Figure BDA0003771621950000049
上积分的上下界，上标n表示节点功率，
Figure BDA00037716219500000410
表示由
Figure BDA00037716219500000411
构成的T维列向量。Among them, X 0 represents the feasible domain aggregation model, t is the subscript of the time period,
Figure BDA0003771621950000042
represents the set of all time periods, T represents the total number of time periods,
Figure BDA0003771621950000043
represents the active power at the root node,
Figure BDA0003771621950000044
Yes
Figure BDA0003771621950000045
any subset of ,
Figure BDA0003771621950000046
and
Figure BDA0003771621950000047
power respectively
Figure BDA0003771621950000048
collection in time
Figure BDA0003771621950000049
The upper and lower bounds of the upper integral, the superscript n represents the node power,
Figure BDA00037716219500000410
represented by
Figure BDA00037716219500000411
Consists of a T-dimensional column vector.

可选地，在本申请的一个实施例中，所述线性潮流约束的期望目标包括第一线性潮流约束目标和第二线性潮流约束目标。Optionally, in an embodiment of the present application, the desired target of the linear power flow constraint includes a first linear power flow constraint target and a second linear power flow constraint target.

可选地，在本申请的一个实施例中，当所述线性潮流约束的期望目标为所述第一线性潮流约束目标时，所述约束模块，进一步用于将配网中所有变量的可行域均转化为

Figure BDA00037716219500000412
其中，xn,t是潮流方程中的第n个变量在时段t的值，xn表示由xn,t构成的T维列向量；Optionally, in an embodiment of the present application, when the desired target of the linear power flow constraint is the first linear power flow constraint target, the constraint module is further configured to determine the feasible region of all variables in the distribution network. are converted into
Figure BDA00037716219500000412
Among them, x n, t is the value of the nth variable in the power flow equation in the time period t, and x n represents the T-dimensional column vector composed of x n, t ;

对于目标集合

Figure BDA00037716219500000413
的非空子集
Figure BDA00037716219500000414
使得
Figure BDA00037716219500000415
Figure BDA00037716219500000416
满足约束：
Figure BDA00037716219500000417
和潮流约束
Figure BDA00037716219500000418
其中，m是等式的编号，am,n是xn,t在第m个等式中的系数；for the target set
Figure BDA00037716219500000413
nonempty subset of
Figure BDA00037716219500000414
make
Figure BDA00037716219500000415
Figure BDA00037716219500000416
Satisfy the constraints:
Figure BDA00037716219500000417
and current constraints
Figure BDA00037716219500000418
where m is the equation number and a m,n is the coefficient of x n,t in the mth equation;

根据第一优化公式计算安全约束参数

Figure BDA00037716219500000419
和
Figure BDA00037716219500000420
所述第一优化公式为：
Figure BDA00037716219500000421
其中，
Figure BDA00037716219500000422
是
Figure BDA00037716219500000423
的最小值，
Figure BDA00037716219500000424
是
Figure BDA00037716219500000425
的最大值，s.t.表示约束条件；Calculate the safety constraint parameters according to the first optimization formula
Figure BDA00037716219500000419
and
Figure BDA00037716219500000420
The first optimization formula is:
Figure BDA00037716219500000421
in,
Figure BDA00037716219500000422
Yes
Figure BDA00037716219500000423
the minimum value of ,
Figure BDA00037716219500000424
Yes
Figure BDA00037716219500000425
The maximum value of , st represents the constraints;

根据所述安全约束参数

Figure BDA00037716219500000426
和
Figure BDA00037716219500000427
优化所述可行域聚合模型。According to the safety constraint parameters
Figure BDA00037716219500000426
and
Figure BDA00037716219500000427
The feasible domain aggregation model is optimized.

可选地，在本申请的一个实施例中，当所述线性潮流约束的期望目标为所述第二线性潮流约束目标时，所述约束模块，进一步用于根据以下公式计算潮流转移分布因子描述的配网潮流约束：Optionally, in an embodiment of the present application, when the desired target of the linear power flow constraint is the second linear power flow constraint target, the constraint module is further configured to calculate the power flow transfer distribution factor description according to the following formula: The distribution network flow constraints:

Figure BDA0003771621950000051
Figure BDA0003771621950000051

Figure BDA0003771621950000052
Figure BDA0003771621950000052

Figure BDA0003771621950000053
Figure BDA0003771621950000053

Figure BDA0003771621950000054
Figure BDA0003771621950000054

Figure BDA0003771621950000055
Figure BDA0003771621950000055

其中，

Figure BDA0003771621950000056
是支路l在时段t的有功增量，
Figure BDA0003771621950000057
是节点i的有功增量，
Figure BDA0003771621950000058
是支路l的基准功率，
Figure BDA0003771621950000059
是节点i的基准功率，sl,i是支路l关于节点i的潮流转移分布因子，意为节点i的功率增加1个单位使得支路l功率的增量，
Figure BDA00037716219500000510
是配网中所有节点的集合，
Figure BDA00037716219500000511
是去掉平衡节点后的节点集合，
Figure BDA00037716219500000512
是含灵活资源聚合商的节点集合，
Figure BDA00037716219500000513
是配网支路的集合，
Figure BDA00037716219500000514
和
Figure BDA00037716219500000515
分别是由
Figure BDA00037716219500000516
和
Figure BDA00037716219500000517
构成的T维列向量，
Figure BDA00037716219500000518
表示灵活资源聚合商节点处的功率可行域；in,
Figure BDA0003771621950000056
is the active power increment of branch l in time period t,
Figure BDA0003771621950000057
is the active power increment of node i,
Figure BDA0003771621950000058
is the reference power of branch l,
Figure BDA0003771621950000059
is the reference power of node i, s l,i is the power flow transfer distribution factor of branch l about node i, which means that the power of node i increases by 1 unit to make the power of branch l increase,
Figure BDA00037716219500000510
is the set of all nodes in the distribution network,
Figure BDA00037716219500000511
is the set of nodes after removing the balance node,
Figure BDA00037716219500000512
is a set of nodes with flexible resource aggregators,
Figure BDA00037716219500000513
is a collection of distribution network branches,
Figure BDA00037716219500000514
and
Figure BDA00037716219500000515
respectively by
Figure BDA00037716219500000516
and
Figure BDA00037716219500000517
Constitute a T-dimensional column vector,
Figure BDA00037716219500000518
represents the power feasible region at the flexible resource aggregator node;

根据所述潮流转移分布因子描述的配网潮流约束从叶节点沿道路不断根据支路的传输容量修正可行域直到根节点，得到安全约束参数，其中，每次修正进行比较和求和运算；基于所述安全约束参数优化所述可行域聚合模型。According to the power flow constraint of the distribution network described by the power flow transfer distribution factor, the feasible region is continuously modified from the leaf node along the road to the root node according to the transmission capacity of the branch, and the safety constraint parameter is obtained. The security constraint parameter optimizes the feasible region aggregation model.

本申请第三方面实施例提供一种电子设备，包括：存储器、处理器及存储在所述存储器上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程序，以实现如上述实施例所述的配电网中可调资源的灵活性聚合方法。An embodiment of a third aspect of the present application provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to achieve The flexible aggregation method of adjustable resources in the distribution network as described in the above embodiments.

本申请第四方面实施例提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行，以用于实现如上述实施例所述的配电网中可调资源的灵活性聚合方法。Embodiments of the fourth aspect of the present application provide a computer-readable storage medium on which a computer program is stored, and the program is executed by a processor, so as to realize the flexibility of adjustable resources in a power distribution network as described in the foregoing embodiments Sexual aggregation method.

由此，本申请至少具有如下有益效果：Therefore, the present application at least has the following beneficial effects:

根据灵活资源在各个节点上的聚合可行域模型，计算出考虑配网潮流安全约束的配网灵活资源聚合可行域，能够在保证配网潮流安全和功率分配可行性的前提下，最大化地利用灵活资源的功率灵活性。由此，解决了相关技术对配网中灵活资源的聚合可行域考虑不全面，无法最大化地利用灵活资源的灵活性，降低了全网运行的经济性和安全性等问题。According to the aggregation feasible region model of flexible resources on each node, the feasible region of distribution network flexible resource aggregation considering the security constraints of distribution network power flow is calculated, which can maximize the utilization of the distribution network under the premise of ensuring the safety of distribution network power flow and the feasibility of power distribution. Power flexibility for flexible resources. As a result, the related technologies do not fully consider the feasible domain of aggregation of flexible resources in the distribution network, cannot maximize the flexibility of flexible resources, and reduce the economy and security of the entire network operation.

本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。Additional aspects and advantages of the present application will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of the present application.

附图说明Description of drawings

本申请上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

图1为根据本申请实施例提供的一种配电网中可调资源的灵活性聚合方法的流程图；FIG. 1 is a flowchart of a method for flexible aggregation of adjustable resources in a distribution network provided according to an embodiment of the present application;

图2为根据本申请实施例提供的一种配电网中可调资源的灵活性聚合装置的方框示意图；2 is a schematic block diagram of a flexible aggregation device for adjustable resources in a distribution network provided according to an embodiment of the present application;

图3为根据本申请实施例提供的电子设备的结构示意图。FIG. 3 is a schematic structural diagram of an electronic device provided according to an embodiment of the present application.

附图标记说明：确定模块-100、构建模块-200、约束模块-300、存储器-301、处理器-302、通信接口-303。Reference numeral description: determination module-100, building module-200, constraint module-300, memory-301, processor-302, communication interface-303.

具体实施方式Detailed ways

下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application.

下面参考附图描述本申请实施例的配电网中可调资源的灵活性聚合方法、装置、电子设备及存储介质。针对上述背景技术中提到的问题，本申请提供了一种配电网中可调资源的灵活性聚合方法，在该方法中，通过确定配电网中各个节点上的灵活资源；根据配电网的预设安全约束条件和各个节点上的灵活资源构建配电网的可行域聚合模型；根据线性潮流约束的期望目标计算可行域聚合模型的至少一个安全约束参数，基于至少一个安全约束参数优化可行域聚合模型，以利用优化后的可行域聚合模型对配电网进行线性潮流安全约束。由此，解决了现行的市场规则对配网中灵活资源的聚合可行域考虑不全面，无法最大化地利用灵活资源的灵活性，降低了全网运行的经济性和安全性等问题。The method, apparatus, electronic device, and storage medium for flexible aggregation of adjustable resources in a power distribution network according to embodiments of the present application are described below with reference to the accompanying drawings. In view of the problems mentioned in the above background art, the present application provides a flexible aggregation method of adjustable resources in a distribution network. In this method, by determining the flexible resources on each node in the distribution network; The pre-set safety constraints of the network and the flexible resources on each node are used to construct a feasible region aggregation model of the distribution network; at least one safety constraint parameter of the feasible region aggregation model is calculated according to the expected objective of the linear power flow constraint, and the optimization is based on at least one safety constraint parameter. Feasible region aggregation model to use the optimized feasible region aggregation model to impose linear power flow safety constraints on the distribution network. This solves the problems that the current market rules do not fully consider the aggregation feasible region of flexible resources in the distribution network, cannot maximize the flexibility of flexible resources, and reduce the economy and security of the entire network operation.

具体而言，图1为本申请实施例所提供的一种配电网中可调资源的灵活性聚合方法的流程示意图。Specifically, FIG. 1 is a schematic flowchart of a method for flexible aggregation of adjustable resources in a power distribution network provided by an embodiment of the present application.

如图1所示，该配电网中可调资源的灵活性聚合方法包括以下步骤：As shown in Figure 1, the flexible aggregation method of tunable resources in the distribution network includes the following steps:

在步骤S101中，确定配电网中各个节点上的灵活资源。In step S101, the flexible resources on each node in the distribution network are determined.

可以理解的是，需求侧灵活资源参与电网调控，可以保障电网的安全稳定运行，促进新能源消纳，减少用户用电成本。由于在电网调度时考虑所有需求侧资源的参数过于复杂，并且不利于保护电力用户的隐私，需求侧灵活资源需要聚合后参与电网调控，因此，本申请实施例首先需要确定配电网中各个节点上的灵活资源。It is understandable that the participation of flexible resources on the demand side in power grid regulation can ensure the safe and stable operation of the power grid, promote new energy consumption, and reduce electricity costs for users. Since the parameters of all demand-side resources considered during power grid scheduling are too complex, and it is not conducive to protecting the privacy of power users, and demand-side flexible resources need to be aggregated to participate in power grid regulation, therefore, in this embodiment of the present application, each node in the power distribution network needs to be determined first. flexible resources on .

在步骤S102中，根据配电网的预设安全约束条件和各个节点上的灵活资源构建配电网的可行域聚合模型。In step S102, a feasible domain aggregation model of the distribution network is constructed according to the preset security constraints of the distribution network and the flexible resources on each node.

本申请实施例中可以在已知配网中单个节点的灵活资源聚合可行域的前提下，考虑配网潮流安全约束，计算出配网中灵活资源的可行域聚合模型，可以保证可行域内的任一每一条功率曲线，都可以在满足潮流安全约束的前提下被无误差地分配到每个灵活资源的可行域内；不在精确可行域内的功率曲线，一定不能在满足潮流安全约束的前提下被无误差地分配到每个灵活资源的可行域内，为灵活资源参与大电网的经济调度或市场出清的决策提供模型基础，能够最大化地利用灵活资源的灵活性，提升全网运行的经济性和安全性。In the embodiment of the present application, on the premise that the feasible region of flexible resource aggregation of a single node in the distribution network is known, and considering the security constraints of the power flow of the distribution network, the feasible region aggregation model of the flexible resources in the distribution network can be calculated, which can ensure that any operation in the feasible region can be guaranteed. Each power curve can be allocated to the feasible region of each flexible resource without error under the premise of satisfying the power flow safety constraint; the power curve that is not in the exact feasible region must not be distributed without error under the premise of satisfying the power flow safety constraint Errors are allocated to the feasible region of each flexible resource, providing a model basis for flexible resources to participate in the economic dispatch of large power grids or decision-making for market clearing, which can maximize the use of the flexibility of flexible resources and improve the economy and efficiency of the entire network operation. safety.

在本申请的一个实施例中，根据配电网的预设安全约束条件和各个节点上的灵活资源构建配电网的可行域聚合模型，包括：根据预设时间间隔将预设时间窗划分为多个时间段；根据每个节点上灵活资源在每个时间段的边界参数构建每个节点上灵活资源的聚合可行域；根据预设配网安全约束和预设线性配网潮流方程聚合每个节点上灵活资源的聚合可行域，得到配电网的可行域聚合模型。In an embodiment of the present application, constructing a feasible domain aggregation model of the distribution network according to preset security constraints of the distribution network and flexible resources on each node includes: dividing the preset time window into Multiple time periods; construct an aggregation feasible region of flexible resources on each node according to the boundary parameters of flexible resources on each node in each time period; aggregate each node according to preset distribution network security constraints and preset linear distribution network power flow equations. Aggregate feasible region of flexible resources on nodes, and obtain the feasible region aggregation model of distribution network.

具体而言，本申请实施例可以构建考虑配网安全约束的灵活资源可行域聚合模型，包括以下步骤：Specifically, the embodiment of the present application can construct a flexible resource feasible domain aggregation model considering the security constraints of the distribution network, including the following steps:

1)将时间离散化，按ΔT的时间间隔将优化所考虑的时间窗划分为共T个时间段，所有时段的集合用

Figure BDA0003771621950000071
来表示。1) The time is discretized, and the time window considered for optimization is divided into a total of T time periods according to the time interval of ΔT.
Figure BDA0003771621950000071
To represent.

2)配网中各个节点上的灵活资源精确聚合可行域都统一表示为：2) The feasible regions of precise aggregation of flexible resources on each node in the distribution network are uniformly expressed as:

Figure BDA0003771621950000072
Figure BDA0003771621950000072

其中XA表示单个节点上灵活资源的精确聚合可行域，Pt A表示单个节点上灵活资源在时段t的总功率，PA是由所有Pt A(从t＝1到t＝T)组成的T维列向量，本申请随后所示的加粗字母均为相应变量组成的T维列向量，

Figure BDA0003771621950000073
是
Figure BDA0003771621950000074
的任意子集，
Figure BDA0003771621950000075
和
Figure BDA0003771621950000076
是与
Figure BDA0003771621950000077
相关的边界参数。where X A represents the exact aggregate feasible region of flexible resources on a single node, P t A represents the total power of flexible resources on a single node in time period t, and P A is composed of all P t A (from t=1 to t=T) The T-dimensional column vector of , the bold letters shown subsequently in this application are the T-dimensional column vector composed of corresponding variables,
Figure BDA0003771621950000073
Yes
Figure BDA0003771621950000074
any subset of ,
Figure BDA0003771621950000075
and
Figure BDA0003771621950000076
With
Figure BDA0003771621950000077
relevant boundary parameters.

用xt来泛指所有变量，则可以把形如XA的可行域一般化，即定义以下集合：By using x t to refer to all variables, the feasible region of the form X A can be generalized, that is, the following set can be defined:

Figure BDA0003771621950000078
Figure BDA0003771621950000078

设所有能按照上述形式定义的可行域构成集合

Figure BDA0003771621950000079
Let all feasible domains that can be defined in the above form form the set
Figure BDA0003771621950000079

3)转化配网安全约束和线性配网潮流方程，安全约束中的传输容量约束和电压上下限约束等决定的可行域可以统一写为：3) Transforming the distribution network security constraints and the linear distribution network power flow equation, the feasible region determined by the transmission capacity constraints and the voltage upper and lower limit constraints in the security constraints can be written as:

Figure BDA00037716219500000710
Figure BDA00037716219500000710

这种形式的可行域属于

Figure BDA00037716219500000711
因为
Figure BDA00037716219500000712
Figure BDA00037716219500000713
Feasible domains of this form belong to
Figure BDA00037716219500000711
because
Figure BDA00037716219500000712
Figure BDA00037716219500000713

安全约束中的固定负荷约束和平衡节点电压相角约束等决定的可行域可以统一写为：The feasible region determined by the fixed load constraint and the equilibrium node voltage phase angle constraint in the safety constraints can be written uniformly as:

Figure BDA0003771621950000081
Figure BDA0003771621950000081

这种形式的可行域也属于

Figure BDA0003771621950000082
因为
Figure BDA0003771621950000083
Feasible domains of this form also belong to
Figure BDA0003771621950000082
because
Figure BDA0003771621950000083

线性配网潮流方程的每个等式可以统一表示为：Each equation of the linear distribution network power flow equation can be uniformly expressed as:

Figure BDA0003771621950000084
Figure BDA0003771621950000084

其中xn,t是潮流方程中的第n个变量在时段t的值，m是等式的编号，am,n是xn,t在第m个等式中的系数，与t无关，则上述潮流方程也可以等价地写为：where x n,t is the value of the nth variable in the power flow equation at time period t, m is the equation number, a m,n is the coefficient of xn ,t in the mth equation, independent of t, The above power flow equation can also be equivalently written as:

Figure BDA0003771621950000085
Figure BDA0003771621950000085

4)考虑一般的辐射状配电网，则配网灵活资源可行域的精确聚合模型就是配网平衡节点(即根节点)的有功功率可行域。设根节点处的有功功率为变量

Figure BDA0003771621950000086
则考虑配网中灵活资源的可行域和潮流安全约束决定的可行域后，
Figure BDA0003771621950000087
的可行域精确模型可以表示为：4) Considering the general radial distribution network, the accurate aggregation model of the feasible region of flexible resources of the distribution network is the feasible region of active power of the balance node (ie the root node) of the distribution network. Let the active power at the root node be a variable
Figure BDA0003771621950000086
Then, after considering the feasible region of the flexible resources in the distribution network and the feasible region determined by the safety constraints of the power flow,
Figure BDA0003771621950000087
The feasible region accurate model of can be expressed as:

Figure BDA0003771621950000088
Figure BDA0003771621950000088

其中，参数

Figure BDA0003771621950000089
和
Figure BDA00037716219500000810
的计算方法在随后的第2)步和第3)步中结合具体的潮流方程给出。X0表示所述可行域聚合模型，t是时间段下标，
Figure BDA00037716219500000811
表示所有时间段的集合，T表示时间段的总数量，
Figure BDA00037716219500000812
表示根节点处的有功功率，
Figure BDA00037716219500000813
是
Figure BDA00037716219500000814
的任意子集，
Figure BDA00037716219500000815
和
Figure BDA00037716219500000816
分别表示功率
Figure BDA00037716219500000817
在时间段集合
Figure BDA00037716219500000818
上积分的上下界，上标n表示节点功率，
Figure BDA00037716219500000819
表示由
Figure BDA00037716219500000820
构成的T维列向量。Among them, the parameter
Figure BDA0003771621950000089
and
Figure BDA00037716219500000810
The calculation method of is given in the following steps 2) and 3) combined with the specific power flow equation. X 0 represents the feasible domain aggregation model, t is the subscript of the time period,
Figure BDA00037716219500000811
represents the set of all time periods, T represents the total number of time periods,
Figure BDA00037716219500000812
represents the active power at the root node,
Figure BDA00037716219500000813
Yes
Figure BDA00037716219500000814
any subset of ,
Figure BDA00037716219500000815
and
Figure BDA00037716219500000816
power respectively
Figure BDA00037716219500000817
collection in time
Figure BDA00037716219500000818
The upper and lower bounds of the upper integral, the superscript n represents the node power,
Figure BDA00037716219500000819
represented by
Figure BDA00037716219500000820
Consists of a T-dimensional column vector.

精确模型中，

Figure BDA00037716219500000821
的任一非空子集均对应一对有效的上下界约束，当T较大时模型复杂度较高，这里给出一种近似模型，命名为二阶近似可行域，可以表示为：In the exact model,
Figure BDA00037716219500000821
Any non-empty subset of , corresponds to a pair of effective upper and lower bound constraints. When T is larger, the model complexity is higher. Here is an approximate model named second-order approximate feasible region, which can be expressed as:

Figure BDA00037716219500000822
Figure BDA00037716219500000822

可见，二阶近似可行域对应于那些由任意两个时间段t1和t2之间的所有时间段所构成的集合，这是

Figure BDA00037716219500000823
的子集中的一小部分，参数
Figure BDA00037716219500000824
和
Figure BDA00037716219500000825
也是
Figure BDA00037716219500000826
和
Figure BDA00037716219500000827
中对应于上述子集的那部分。It can be seen that the second-order approximate feasible region corresponds to the set of all time periods between any two time periods t 1 and t 2 , which is
Figure BDA00037716219500000823
A small subset of the subset, the parameter
Figure BDA00037716219500000824
and
Figure BDA00037716219500000825
Too
Figure BDA00037716219500000826
and
Figure BDA00037716219500000827
The part of the corresponding to the above subset.

需要说明的是，本申请实施例还可以通过选择

Figure BDA00037716219500000828
子集中的其它部分来构建近似模型，此处不再进行赘述，但只要是通过选择
Figure BDA0003771621950000091
的部分子集来构建近似模型的方式，都在本申请的权力要求范围之内。It should be noted that, in this embodiment of the present application, it is also possible to select
Figure BDA00037716219500000828
other parts of the subset to build an approximate model, which will not be repeated here, but only by selecting
Figure BDA0003771621950000091
It is within the scope of the claims of this application to construct an approximate model of a partial subset.

在步骤S103中，根据线性潮流约束的期望目标计算可行域聚合模型的至少一个安全约束参数，基于至少一个安全约束参数优化可行域聚合模型，以利用优化后的可行域聚合模型对配电网进行线性潮流安全约束。In step S103, at least one safety constraint parameter of the feasible region aggregation model is calculated according to the expected target of the linear power flow constraint, and the feasible region aggregation model is optimized based on the at least one safety constraint parameter, so as to use the optimized feasible region aggregation model to conduct the distribution network operation. Linear Power Flow Safety Constraints.

在本申请的一个实施例中，线性潮流约束的期望目标包括第一线性潮流约束目标和第二线性潮流约束目标。In one embodiment of the present application, the desired objectives of the linear power flow constraint include a first linear power flow constraint objective and a second linear power flow constraint objective.

其中，第一线性潮流约束目标可以适用于任何线性配网潮流安全约束，第二线性潮流约束目标可以适用于潮流转移分布因子描述的线性潮流安全约束。Among them, the first linear power flow constraint objective can be applied to any linear distribution network power flow safety constraints, and the second linear power flow constraint objective can be applied to the linear power flow safety constraints described by the power flow transfer distribution factor.

本申请实施例可以在线性配网潮流约束下准确地计算出配网中灵活资源可行域聚合模型的安全约束参数，并对模型进行优化，利用优化后的行域聚合模型对配电网进行线性潮流安全约束，可以在保证配网潮流安全和功率分配可行性的同时，最大化地利用灵活资源的灵活性，提升全网运行的经济性和安全性。The embodiment of the present application can accurately calculate the security constraint parameters of the feasible domain aggregation model of flexible resources in the distribution network under the constraints of the linear distribution network power flow, optimize the model, and use the optimized row domain aggregation model to linearly perform the distribution network. The power flow safety constraint can ensure the power flow safety and power distribution feasibility of the distribution network, and maximize the flexibility of flexible resources to improve the economy and safety of the entire network operation.

在本申请的一个实施例中，当线性潮流约束的期望目标为第一线性潮流约束目标时，根据线性潮流约束的期望目标计算可行域聚合模型的至少一个安全约束参数，基于至少一个安全约束参数优化可行域聚合模型，包括：In an embodiment of the present application, when the desired target of the linear power flow constraint is the first linear power flow constraint target, at least one safety constraint parameter of the feasible region aggregation model is calculated according to the desired target of the linear power flow constraint, and based on the at least one safety constraint parameter Optimize the feasible domain aggregation model, including:

将配网中所有变量的可行域均转化为

Figure BDA0003771621950000092
其中，n是变量的编号，xn,t是潮流方程中的第n个变量在时段t的值，xn表示由xn,t构成的T维列向量；对于目标集合
Figure BDA0003771621950000093
的非空子集
Figure BDA0003771621950000094
使得
Figure BDA0003771621950000095
Figure BDA0003771621950000096
满足约束：
Figure BDA0003771621950000097
和潮流约束
Figure BDA0003771621950000098
其中，m是等式的编号，am,n是xn,t在第m个等式中的系数；The feasible regions of all variables in the distribution network are transformed into
Figure BDA0003771621950000092
Among them, n is the number of the variable, x n, t is the value of the nth variable in the power flow equation in the time period t, x n represents the T-dimensional column vector composed of x n, t ; for the target set
Figure BDA0003771621950000093
nonempty subset of
Figure BDA0003771621950000094
make
Figure BDA0003771621950000095
Figure BDA0003771621950000096
Satisfy the constraints:
Figure BDA0003771621950000097
and current constraints
Figure BDA0003771621950000098
where m is the equation number and a m,n is the coefficient of x n,t in the mth equation;

根据第一优化公式计算安全约束参数

Figure BDA0003771621950000099
和
Figure BDA00037716219500000910
第一优化公式为：Calculate the safety constraint parameters according to the first optimization formula
Figure BDA0003771621950000099
and
Figure BDA00037716219500000910
The first optimization formula is:

Figure BDA00037716219500000911
Figure BDA00037716219500000911

Figure BDA00037716219500000912
Figure BDA00037716219500000912

Figure BDA00037716219500000913
Figure BDA00037716219500000913

Figure BDA00037716219500000914
Figure BDA00037716219500000914

Figure BDA00037716219500000915
Figure BDA00037716219500000915

Figure BDA00037716219500000916
Figure BDA00037716219500000916

其中，

Figure BDA00037716219500000917
是
Figure BDA00037716219500000918
的最小值，
Figure BDA00037716219500000919
是
Figure BDA00037716219500000920
的最大值，s.t.表示约束条件；根据安全约束参数
Figure BDA0003771621950000101
和
Figure BDA0003771621950000102
优化可行域聚合模型。in,
Figure BDA00037716219500000917
Yes
Figure BDA00037716219500000918
the minimum value of ,
Figure BDA00037716219500000919
Yes
Figure BDA00037716219500000920
The maximum value of , st represents the constraint condition; according to the security constraint parameter
Figure BDA0003771621950000101
and
Figure BDA0003771621950000102
Optimizing Feasible Domain Aggregation Models.

在本申请实施例中，对任意给定的

Figure BDA0003771621950000103
求解上述优化问题确定
Figure BDA0003771621950000104
和
Figure BDA0003771621950000105
则经过2(2T-1)次优化计算后，即可确定所有的
Figure BDA0003771621950000106
和
Figure BDA0003771621950000107
这种通过求解优化问题计算
Figure BDA0003771621950000108
和
Figure BDA0003771621950000109
的方法被称为灵活性优化法。对于
Figure BDA00037716219500001010
和
Figure BDA00037716219500001011
上述
Figure BDA00037716219500001012
的选择并不是任意的，而是只有T(T+1)/2种，同样利用灵活性优化法，经过T(T+1)次优化计算即可确定所有的
Figure BDA00037716219500001013
和
Figure BDA00037716219500001014
In the embodiments of this application, for any given
Figure BDA0003771621950000103
Solve the above optimization problem to determine
Figure BDA0003771621950000104
and
Figure BDA0003771621950000105
Then after 2(2 T -1) optimization calculations, all the
Figure BDA0003771621950000106
and
Figure BDA0003771621950000107
This is calculated by solving an optimization problem
Figure BDA0003771621950000108
and
Figure BDA0003771621950000109
The method is called flexibility optimization method. for
Figure BDA00037716219500001010
and
Figure BDA00037716219500001011
the above
Figure BDA00037716219500001012
The choice of is not arbitrary, but there are only T(T+1)/2 kinds, also using the flexibility optimization method, after T(T+1) times of optimization calculation, all the
Figure BDA00037716219500001013
and
Figure BDA00037716219500001014

为了便于理解，本申请实施例通过一种具体的线性潮流方程和安全约束进行详细说明，如下：For ease of understanding, the embodiments of the present application are described in detail through a specific linear power flow equation and safety constraints, as follows:

Figure BDA00037716219500001015
Figure BDA00037716219500001015

Figure BDA00037716219500001016
Figure BDA00037716219500001016

Figure BDA00037716219500001017
Figure BDA00037716219500001017

Figure BDA00037716219500001018
Figure BDA00037716219500001018

Figure BDA00037716219500001019
Figure BDA00037716219500001019

Figure BDA00037716219500001020
Figure BDA00037716219500001020

Figure BDA00037716219500001021
Figure BDA00037716219500001021

Figure BDA00037716219500001022
Figure BDA00037716219500001022

Figure BDA00037716219500001023
Figure BDA00037716219500001023

Figure BDA00037716219500001024
Figure BDA00037716219500001024

V0,t＝1,θ0,t＝0V 0,t =1,θ 0,t =0

Figure BDA00037716219500001025
Figure BDA00037716219500001025

其中，i，j为节点的编号，0表示根节点，

Figure BDA00037716219500001026
表示所有节点的集合，
Figure BDA00037716219500001027
表示去除平衡节点的节点集合，
Figure BDA00037716219500001028
表示含有灵活资源的节点集合，ij表示始于节点i终于节点j的支路，
Figure BDA00037716219500001029
是所有支路的集合，
Figure BDA00037716219500001030
和
Figure BDA00037716219500001031
分别表示支路ij在时段t的有功和无功功率，Vi,t表示节点i的电压，θi,t表示节点i的相角，Gij和Bij分别表示节点导纳矩阵中第i行第j列的实部和虚部，
Figure BDA0003771621950000111
和
Figure BDA0003771621950000112
分别表示节点i的有功和无功功率，γi是节点i的功率因数角，
Figure BDA0003771621950000113
表示支路ij的传输容量，Vi 和
Figure BDA0003771621950000114
分别表示节点i的电压上下限，
Figure BDA0003771621950000115
和
Figure BDA0003771621950000116
分别表示固定负荷节点i的负荷值。Among them, i, j is the number of the node, 0 represents the root node,
Figure BDA00037716219500001026
represents the set of all nodes,
Figure BDA00037716219500001027
represents the set of nodes with balanced nodes removed,
Figure BDA00037716219500001028
represents a set of nodes with flexible resources, ij represents a branch starting from node i and ending at node j,
Figure BDA00037716219500001029
is the set of all branches,
Figure BDA00037716219500001030
and
Figure BDA00037716219500001031
respectively represent the active and reactive power of branch ij in time period t, V i,t represents the voltage of node i, θ i,t represents the phase angle of node i, G ij and B ij represent the i-th node admittance matrix, respectively the real and imaginary parts of row j, column j,
Figure BDA0003771621950000111
and
Figure BDA0003771621950000112
are the active and reactive power of node i, respectively, γ i is the power factor angle of node i,
Figure BDA0003771621950000113
represents the transmission capacity of branch ij, V i and
Figure BDA0003771621950000114
represent the upper and lower voltage limits of node i, respectively,
Figure BDA0003771621950000115
and
Figure BDA0003771621950000116
respectively represent the load value of fixed load node i.

前5条约束对应于

Figure BDA0003771621950000117
第6、7条约束对应于
Figure BDA0003771621950000118
第8、9、10条约束对应于
Figure BDA0003771621950000119
最后一条约束则对应于
Figure BDA00037716219500001110
因此，本申请实施例潮流方程、安全约束和资源灵活性约束完全符合使用灵活性优化法的条件，可以通过灵活性优化法来计算配网中灵活资源的聚合可行域。The first 5 constraints correspond to
Figure BDA0003771621950000117
Constraints 6 and 7 correspond to
Figure BDA0003771621950000118
Constraints 8, 9, and 10 correspond to
Figure BDA0003771621950000119
The last constraint corresponds to
Figure BDA00037716219500001110
Therefore, the power flow equation, security constraints, and resource flexibility constraints in the embodiments of the present application fully meet the conditions for using the flexibility optimization method, and the flexibility optimization method can be used to calculate the aggregate feasible region of flexible resources in the distribution network.

在本申请的一个实施例中，当线性潮流约束的期望目标为第二线性潮流约束目标时，根据线性潮流约束的期望目标计算可行域聚合模型的至少一个安全约束参数，基于至少一个安全约束参数优化可行域聚合模型，包括：In an embodiment of the present application, when the desired target of the linear power flow constraint is the second linear power flow constraint target, at least one safety constraint parameter of the feasible domain aggregation model is calculated according to the desired target of the linear power flow constraint, and based on the at least one safety constraint parameter Optimize the feasible domain aggregation model, including:

根据以下公式计算潮流转移分布因子描述的配网潮流约束：The distribution network power flow constraints described by the power flow transfer distribution factor are calculated according to the following formula:

Figure BDA00037716219500001111
Figure BDA00037716219500001111

Figure BDA00037716219500001112
Figure BDA00037716219500001112

Figure BDA00037716219500001113
Figure BDA00037716219500001113

Figure BDA00037716219500001114
Figure BDA00037716219500001114

其中，

Figure BDA00037716219500001115
是支路l在时段t的有功增量，
Figure BDA00037716219500001116
是节点i的有功增量，
Figure BDA00037716219500001117
是支路l的基准功率，
Figure BDA00037716219500001118
是节点i的基准功率，sl,i是支路l关于节点i的潮流转移分布因子，意为节点i的功率增加1个单位使得支路l功率的增量，
Figure BDA00037716219500001119
是配网中所有节点的集合，
Figure BDA00037716219500001120
是去掉平衡节点后的节点集合，
Figure BDA00037716219500001121
是含灵活资源聚合商的节点集合，
Figure BDA00037716219500001122
是配网支路的集合，
Figure BDA00037716219500001123
和
Figure BDA00037716219500001124
分别是由
Figure BDA00037716219500001125
和
Figure BDA00037716219500001126
构成的T维列向量，
Figure BDA00037716219500001127
表示灵活资源聚合商节点处的功率可行域；in,
Figure BDA00037716219500001115
is the active power increment of branch l in time period t,
Figure BDA00037716219500001116
is the active power increment of node i,
Figure BDA00037716219500001117
is the reference power of branch l,
Figure BDA00037716219500001118
is the reference power of node i, s l,i is the power flow transfer distribution factor of branch l about node i, which means that the power of node i increases by 1 unit to make the power of branch l increase,
Figure BDA00037716219500001119
is the set of all nodes in the distribution network,
Figure BDA00037716219500001120
is the set of nodes after removing the balance node,
Figure BDA00037716219500001121
is a set of nodes with flexible resource aggregators,
Figure BDA00037716219500001122
is a collection of distribution network branches,
Figure BDA00037716219500001123
and
Figure BDA00037716219500001124
respectively by
Figure BDA00037716219500001125
and
Figure BDA00037716219500001126
Constitute a T-dimensional column vector,
Figure BDA00037716219500001127
represents the power feasible region at the flexible resource aggregator node;

根据潮流转移分布因子描述的配网潮流约束从叶节点沿道路不断根据支路的传输容量修正可行域直到根节点，得到安全约束参数，其中，每次修正进行比较和求和运算；基于安全约束参数优化可行域聚合模型。According to the distribution network power flow constraint described by the power flow transfer distribution factor, the feasible region is continuously modified according to the transmission capacity of the branch along the road to the root node, and the safety constraint parameters are obtained. Parameter Optimization Feasible Region Aggregation Model.

在本申请实施例中，记

Figure BDA00037716219500001128
构成的矩阵为S，在辐射状配电网中，假设所有功率不平衡量均由平衡节点(即根节点提供平衡)，则S等价于该辐射状电网的支路-道路关联矩阵，这一结论的物理意义为：当某个节点的负荷增加1，有且仅有其道路上的支路的功率增加1。In the embodiments of this application, the
Figure BDA00037716219500001128
The formed matrix is S. In the radial distribution network, assuming that all power imbalances are provided by the balance node (ie, the root node provides balance), then S is equivalent to the branch-road correlation matrix of the radial power grid. This The physical meaning of the conclusion is: when the load of a node increases by 1, the power of some and only branches on its road increases by 1.

记

Figure BDA0003771621950000121
的可行域为
Figure BDA0003771621950000122
其中
Figure BDA0003771621950000123
Figure BDA0003771621950000124
记
Figure BDA0003771621950000125
的可行域为
Figure BDA0003771621950000126
remember
Figure BDA0003771621950000121
The feasible domain of is
Figure BDA0003771621950000122
in
Figure BDA0003771621950000123
Figure BDA0003771621950000124
remember
Figure BDA0003771621950000125
The feasible domain of is
Figure BDA0003771621950000126

配网中灵活资源的聚合可行域就是求

Figure BDA0003771621950000127
的可行域，在潮流转移分布因子描述的配网线性潮流约束下，精确的
Figure BDA0003771621950000128
可行域模型中的参数可以使用回溯消去法计算，包括以下步骤：The feasible region of aggregation of flexible resources in the distribution network is to seek
Figure BDA0003771621950000127
The feasible region of , under the linear power flow constraints of the distribution network described by the power flow transfer distribution factor, the accurate
Figure BDA0003771621950000128
The parameters in the feasible region model can be calculated using the backtracking elimination method, which includes the following steps:

输入：节点集合

Figure BDA0003771621950000129
支路集合
Figure BDA00037716219500001210
每个节点的功率可行域
Figure BDA00037716219500001211
每条支路的功率可行域Yl Δ；Input: node collection
Figure BDA0003771621950000129
branch collection
Figure BDA00037716219500001210
Power Feasible Region of Each Node
Figure BDA00037716219500001211
The power feasible region Y l Δ of each branch;

输出：

Figure BDA00037716219500001212
的可行域
Figure BDA00037716219500001213
output:
Figure BDA00037716219500001212
feasible domain
Figure BDA00037716219500001213

1、while

Figure BDA00037716219500001214
do1. while
Figure BDA00037716219500001214
do

2、找出一个叶节点i，以及它所在的支路l和它的父节点j2. Find a leaf node i, its branch l and its parent node j

3、for

Figure BDA00037716219500001215
do3. for
Figure BDA00037716219500001215
do

4、赋值

Figure BDA00037716219500001216
4. Assignment
Figure BDA00037716219500001216

5、end for5. end for

6、从

Figure BDA00037716219500001217
中删除节点i，从
Figure BDA00037716219500001218
中删除支路l6. From
Figure BDA00037716219500001217
delete node i from
Figure BDA00037716219500001218
delete branch l

7、end while7. end while

8、return

Figure BDA00037716219500001219
8. return
Figure BDA00037716219500001219

本申请实施例根据潮流转移分布因子描述的配网潮流约束从叶节点沿道路不断根据支路的传输容量限制修正可行域直到根节点，每次修正只需进行比较和求和运算，无需计算优化问题，大大简化了计算复杂度。According to the power flow constraint of the distribution network described by the power flow transfer distribution factor in the embodiment of the present application, the feasible region is continuously modified according to the transmission capacity limit of the branch along the road to the root node, and each modification only needs to perform comparison and summation operations, and no calculation optimization is required. problem, which greatly simplifies the computational complexity.

根据本申请实施例提出的配电网中可调资源的灵活性聚合方法，根据灵活资源在各个节点上的聚合可行域模型，计算出考虑配网潮流安全约束的配网灵活资源聚合可行域，能够在保证配网潮流安全和功率分配可行性的前提下，最大化地利用灵活资源的功率灵活性。由此，解决了相关技术对配网中灵活资源的聚合可行域考虑不全面，无法最大化地利用灵活资源的灵活性，降低了全网运行的经济性和安全性等问题。According to the flexible aggregation method of adjustable resources in the distribution network proposed in the embodiment of the present application, and according to the aggregation feasible region model of flexible resources on each node, the feasible region of the flexible resource aggregation of the distribution network considering the security constraints of the distribution network power flow is calculated, It can maximize the power flexibility of flexible resources on the premise of ensuring the safety of the power flow of the distribution network and the feasibility of power distribution. As a result, the related technologies do not fully consider the feasible domain of aggregation of flexible resources in the distribution network, cannot maximize the flexibility of flexible resources, and reduce the economy and security of the entire network operation.

其次参照附图描述根据本申请实施例提出的一种配电网中可调资源的灵活性聚合装置。Next, a flexible aggregation device for adjustable resources in a power distribution network proposed according to an embodiment of the present application will be described with reference to the accompanying drawings.

图2是本申请实施例的一种配电网中可调资源的灵活性聚合装置的方框示意图。FIG. 2 is a schematic block diagram of an apparatus for flexibility aggregation of adjustable resources in a power distribution network according to an embodiment of the present application.

如图2所示，该配电网中可调资源的灵活性聚合装置10包括：确定模块100、构建模块200和约束模块300。As shown in FIG. 2 , the apparatus 10 for aggregating the flexibility of adjustable resources in the distribution network includes: a determination module 100 , a construction module 200 and a constraint module 300 .

其中，确定模块100，用于确定配电网中各个节点上的灵活资源；构建模块200，用于根据配电网的预设安全约束条件和各个节点上的灵活资源构建配电网的可行域聚合模型；约束模块300，用于根据线性潮流约束的期望目标计算可行域聚合模型的至少一个安全约束参数，基于至少一个安全约束参数优化可行域聚合模型，以利用优化后的可行域聚合模型对配电网进行线性潮流安全约束。Among them, the determination module 100 is used to determine the flexible resources on each node in the distribution network; the construction module 200 is used to construct the feasible domain of the distribution network according to the preset safety constraints of the distribution network and the flexible resources on each node Aggregation model; the constraint module 300 is configured to calculate at least one safety constraint parameter of the feasible region aggregation model according to the desired target of the linear power flow constraint, and optimize the feasible region aggregation model based on the at least one safety constraint parameter, so as to utilize the optimized feasible region aggregation model to The distribution network is subject to linear power flow safety constraints.

可选地，在本申请的一个实施例中，构建模块200，进一步用于根据预设时间间隔将预设时间窗划分为多个时间段，根据每个节点上灵活资源在每个时间段的边界参数构建每个节点上灵活资源的聚合可行域；根据预设配网安全约束和预设线性配网潮流方程聚合每个节点上灵活资源的聚合可行域，得到配电网的可行域聚合模型。Optionally, in an embodiment of the present application, the building module 200 is further configured to divide the preset time window into multiple time periods according to the preset time interval, and according to the flexible resources on each node in each time period The boundary parameters construct the aggregate feasible region of flexible resources on each node; according to the preset distribution network security constraints and the preset linear distribution network power flow equation, the aggregated feasible region of flexible resources on each node is aggregated, and the feasible region aggregation model of the distribution network is obtained. .

可选地，在本申请的一个实施例中，可行域聚合模型的表达公式为：Optionally, in an embodiment of the present application, the expression formula of the feasible domain aggregation model is:

Figure BDA0003771621950000131
Figure BDA0003771621950000131

其中，X0表示所述可行域聚合模型，t是时间段下标，

Figure BDA0003771621950000132
表示所有时间段的集合，T表示时间段的总数量，
Figure BDA0003771621950000133
表示根节点处的有功功率，
Figure BDA0003771621950000134
是
Figure BDA0003771621950000135
的任意子集，
Figure BDA0003771621950000136
和
Figure BDA0003771621950000137
分别表示功率
Figure BDA0003771621950000138
在时间段集合
Figure BDA0003771621950000139
上积分的上下界，上标n表示节点功率，
Figure BDA00037716219500001310
表示由
Figure BDA00037716219500001311
构成的T维列向量。Among them, X 0 represents the feasible domain aggregation model, t is the subscript of the time period,
Figure BDA0003771621950000132
represents the set of all time periods, T represents the total number of time periods,
Figure BDA0003771621950000133
represents the active power at the root node,
Figure BDA0003771621950000134
Yes
Figure BDA0003771621950000135
any subset of ,
Figure BDA0003771621950000136
and
Figure BDA0003771621950000137
power respectively
Figure BDA0003771621950000138
collection in time
Figure BDA0003771621950000139
The upper and lower bounds of the upper integral, the superscript n represents the node power,
Figure BDA00037716219500001310
represented by
Figure BDA00037716219500001311
Consists of a T-dimensional column vector.

可选地，在本申请的一个实施例中，线性潮流约束的期望目标包括第一线性潮流约束目标和第二线性潮流约束目标。Optionally, in an embodiment of the present application, the desired target of the linear power flow constraint includes a first linear power flow constraint target and a second linear power flow constraint target.

可选地，在本申请的一个实施例中，当线性潮流约束的期望目标为第一线性潮流约束目标时，约束模块300，进一步用于将配网中所有变量的可行域均转化为

Figure BDA00037716219500001312
其中，xn,t是潮流方程中的第n个变量在时段t的值，xn表示由xn,t构成的T维列向量；Optionally, in an embodiment of the present application, when the desired target of the linear power flow constraint is the first linear power flow constraint target, the constraint module 300 is further configured to convert the feasible domains of all variables in the distribution network into
Figure BDA00037716219500001312
Among them, x n, t is the value of the nth variable in the power flow equation in the time period t, and x n represents the T-dimensional column vector composed of x n, t ;

对于目标集合

Figure BDA00037716219500001313
的非空子集
Figure BDA00037716219500001314
使得
Figure BDA00037716219500001315
Figure BDA00037716219500001316
满足约束：
Figure BDA00037716219500001317
和潮流约束
Figure BDA00037716219500001318
其中，m是等式的编号，am,n是xn,t在第m个等式中的系数；for the target set
Figure BDA00037716219500001313
nonempty subset of
Figure BDA00037716219500001314
make
Figure BDA00037716219500001315
Figure BDA00037716219500001316
Satisfy the constraints:
Figure BDA00037716219500001317
and current constraints
Figure BDA00037716219500001318
where m is the equation number and a m,n is the coefficient of x n,t in the mth equation;

根据第一优化公式计算安全约束参数

Figure BDA00037716219500001319
和
Figure BDA00037716219500001320
第一优化公式为：
Figure BDA0003771621950000141
其中，
Figure BDA0003771621950000142
是
Figure BDA0003771621950000143
的最小值，
Figure BDA0003771621950000144
是
Figure BDA0003771621950000145
的最大值，s.t.表示约束条件；Calculate the safety constraint parameters according to the first optimization formula
Figure BDA00037716219500001319
and
Figure BDA00037716219500001320
The first optimization formula is:
Figure BDA0003771621950000141
in,
Figure BDA0003771621950000142
Yes
Figure BDA0003771621950000143
the minimum value of ,
Figure BDA0003771621950000144
Yes
Figure BDA0003771621950000145
The maximum value of , st represents the constraints;

根据安全约束参数

Figure BDA0003771621950000146
和
Figure BDA0003771621950000147
优化可行域聚合模型。According to safety constraint parameters
Figure BDA0003771621950000146
and
Figure BDA0003771621950000147
Optimizing Feasible Domain Aggregation Models.

可选地，在本申请的一个实施例中，当线性潮流约束的期望目标为第二线性潮流约束目标时，约束模块300，进一步用于根据以下公式计算潮流转移分布因子描述的配网潮流约束：Optionally, in an embodiment of the present application, when the desired target of the linear power flow constraint is the second linear power flow constraint target, the constraint module 300 is further configured to calculate the distribution network power flow constraint described by the power flow transfer distribution factor according to the following formula: :

Figure BDA0003771621950000148
Figure BDA0003771621950000148

Figure BDA0003771621950000149
Figure BDA0003771621950000149

Figure BDA00037716219500001410
Figure BDA00037716219500001410

Figure BDA00037716219500001411
Figure BDA00037716219500001411

Figure BDA00037716219500001412
Figure BDA00037716219500001412

其中，

Figure BDA00037716219500001413
是支路l在时段t的有功增量，
Figure BDA00037716219500001414
是节点i的有功增量，
Figure BDA00037716219500001415
是支路l的基准功率，
Figure BDA00037716219500001416
是节点i的基准功率，sl,i是支路l关于节点i的潮流转移分布因子，意为节点i的功率增加1个单位使得支路l功率的增量，
Figure BDA00037716219500001417
是配网中所有节点的集合，
Figure BDA00037716219500001418
是去掉平衡节点后的节点集合，
Figure BDA00037716219500001419
是含灵活资源聚合商的节点集合，
Figure BDA00037716219500001420
是配网支路的集合，
Figure BDA00037716219500001421
和
Figure BDA00037716219500001422
分别是由
Figure BDA00037716219500001423
和
Figure BDA00037716219500001424
构成的T维列向量，
Figure BDA00037716219500001425
表示灵活资源聚合商节点处的功率可行域；in,
Figure BDA00037716219500001413
is the active power increment of branch l in time period t,
Figure BDA00037716219500001414
is the active power increment of node i,
Figure BDA00037716219500001415
is the reference power of branch l,
Figure BDA00037716219500001416
is the reference power of node i, s l,i is the power flow transfer distribution factor of branch l about node i, which means that the power of node i increases by 1 unit to make the power of branch l increase,
Figure BDA00037716219500001417
is the set of all nodes in the distribution network,
Figure BDA00037716219500001418
is the set of nodes after removing the balance node,
Figure BDA00037716219500001419
is a set of nodes with flexible resource aggregators,
Figure BDA00037716219500001420
is a collection of distribution network branches,
Figure BDA00037716219500001421
and
Figure BDA00037716219500001422
respectively by
Figure BDA00037716219500001423
and
Figure BDA00037716219500001424
Constitute a T-dimensional column vector,
Figure BDA00037716219500001425
represents the power feasible region at the flexible resource aggregator node;

根据潮流转移分布因子描述的配网潮流约束从叶节点沿道路不断根据支路的传输容量修正可行域直到根节点，得到安全约束参数，其中，每次修正进行比较和求和运算；基于安全约束参数优化可行域聚合模型。According to the distribution network power flow constraint described by the power flow transfer distribution factor, the feasible region is continuously modified according to the transmission capacity of the branch along the road to the root node, and the safety constraint parameters are obtained. Parameter Optimization Feasible Region Aggregation Model.

需要说明的是，前述对配电网中可调资源的灵活性聚合方法实施例的解释说明也适用于该实施例的配电网中可调资源的灵活性聚合装置，此处不再赘述。It should be noted that, the foregoing explanation of the embodiment of the flexible aggregation method for adjustable resources in the distribution network is also applicable to the flexible aggregation device for adjustable resources in the distribution network in this embodiment, and details are not repeated here.

根据本申请实施例提出的配电网中可调资源的灵活性聚合装置，根据灵活资源在各个节点上的聚合可行域模型，计算出考虑配网潮流安全约束的配网灵活资源聚合可行域，能够在保证配网潮流安全和功率分配可行性的前提下，最大化地利用灵活资源的功率灵活性。由此，解决了相关技术对配网中灵活资源的聚合可行域考虑不全面，无法最大化地利用灵活资源的灵活性，降低了全网运行的经济性和安全性等问题。According to the flexible aggregation device for adjustable resources in the distribution network proposed in the embodiment of the present application, according to the aggregation feasible region model of the flexible resources on each node, the feasible region of the flexible resource aggregation of the distribution network considering the security constraints of the power flow of the distribution network is calculated, It can maximize the power flexibility of flexible resources on the premise of ensuring the safety of the power flow of the distribution network and the feasibility of power distribution. As a result, the related technologies do not fully consider the feasible domain of aggregation of flexible resources in the distribution network, cannot maximize the flexibility of flexible resources, and reduce the economy and security of the entire network operation.

图3为本申请实施例提供的电子设备的结构示意图。该电子设备可以包括：FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. The electronic device may include:

存储器301、处理器302及存储在存储器301上并可在处理器302上运行的计算机程序。Memory 301 , processor 302 , and computer programs stored on memory 301 and executable on processor 302 .

处理器302执行程序时实现上述实施例中提供的配电网中可调资源的灵活性聚合方法。When the processor 302 executes the program, the flexible aggregation method of the adjustable resources in the power distribution network provided in the above embodiments is implemented.

进一步地，电子设备还包括：Further, the electronic device also includes:

通信接口303，用于存储器301和处理器302之间的通信。The communication interface 303 is used for communication between the memory 301 and the processor 302 .

存储器301，用于存放可在处理器302上运行的计算机程序。The memory 301 is used to store computer programs that can be executed on the processor 302 .

存储器301可能包含高速RAM(Random Access Memory，随机存取存储器)存储器，也可能还包括非易失性存储器，例如至少一个磁盘存储器。The memory 301 may include a high-speed RAM (Random Access Memory, random access memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

如果存储器301、处理器302和通信接口303独立实现，则通信接口303、存储器301和处理器302可以通过总线相互连接并完成相互间的通信。总线可以是ISA(IndustryStandard Architecture，工业标准体系结构)总线、PCI(Peripheral Component，外部设备互连)总线或EISA(Extended Industry Standard Architecture，扩展工业标准体系结构)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图3中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。If the memory 301, the processor 302 and the communication interface 303 are independently implemented, the communication interface 303, the memory 301 and the processor 302 can be connected to each other through a bus and complete communication with each other. The bus may be an ISA (IndustryStandard Architecture, industry standard architecture) bus, a PCI (Peripheral Component, peripheral device interconnection) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 3, but it does not mean that there is only one bus or one type of bus.

可选的，在具体实现上，如果存储器301、处理器302及通信接口303，集成在一块芯片上实现，则存储器301、处理器302及通信接口303可以通过内部接口完成相互间的通信。Optionally, in specific implementation, if the memory 301, the processor 302 and the communication interface 303 are integrated on a chip, the memory 301, the processor 302 and the communication interface 303 can communicate with each other through the internal interface.

处理器302可能是一个CPU(Central Processing Unit，中央处理器)，或者是ASIC(Application Specific Integrated Circuit，特定集成电路)，或者是被配置成实施本申请实施例的一个或多个集成电路。The processor 302 may be a CPU (Central Processing Unit, central processing unit), or an ASIC (Application Specific Integrated Circuit, specific integrated circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

本申请实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现如上的配电网中可调资源的灵活性聚合方法。Embodiments of the present application further provide a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the above flexible aggregation method of adjustable resources in a power distribution network.

在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不是必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或N个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or N of the embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“N个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present application, "N" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更N个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or N more executable instructions for implementing custom logical functions or steps of the process , and the scope of the preferred embodiments of the present application includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present application belong.

应当理解，本申请的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，N个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列，现场可编程门阵列等。It should be understood that various parts of this application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the N steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays, field programmable gate arrays, etc.

本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。Those skilled in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, one or a combination of the steps of the method embodiment is included.

Claims (10)

1.一种配电网中可调资源的灵活性聚合方法，其特征在于，包括以下步骤：1. a flexible aggregation method of adjustable resources in a distribution network, characterized in that, comprising the following steps: 确定配电网中各个节点上的灵活资源；Identify flexible resources at various nodes in the distribution network; 根据所述配电网的预设安全约束条件和所述各个节点上的灵活资源构建所述配电网的可行域聚合模型；constructing a feasible domain aggregation model of the distribution network according to the preset security constraints of the distribution network and flexible resources on the respective nodes; 根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，以利用优化后的可行域聚合模型对所述配电网进行线性潮流安全约束。Calculate at least one safety constraint parameter of the feasible region aggregation model according to the expected objective of linear power flow constraints, and optimize the feasible region aggregation model based on the at least one safety constraint parameter, so as to use the optimized feasible region aggregation model to perform a The power grid is subject to linear power flow safety constraints. 2.根据权利要求1所述的方法，其特征在于，所述根据所述配电网的预设安全约束条件和所述各个节点上的灵活资源构建所述配电网的可行域聚合模型，包括：2. The method according to claim 1, characterized in that, constructing a feasible domain aggregation model of the power distribution network according to preset security constraints of the power distribution network and flexible resources on each node, include: 根据预设时间间隔将预设时间窗划分为多个时间段；Divide the preset time window into multiple time periods according to the preset time interval; 根据每个节点上灵活资源在每个时间段的边界参数构建所述每个节点上灵活资源的聚合可行域；Constructing the aggregate feasible region of the flexible resources on each node according to the boundary parameters of the flexible resources on each node in each time period; 根据预设配网安全约束和预设线性配网潮流方程聚合所述每个节点上灵活资源的聚合可行域，得到所述配电网的可行域聚合模型。According to the preset distribution network security constraints and the preset linear distribution network power flow equation, the aggregation feasible region of the flexible resources on each node is aggregated, and the feasible region aggregation model of the distribution network is obtained. 3.根据权利要求2所述的方法，其特征在于，所述可行域聚合模型的表达公式为：3. The method according to claim 2, wherein the expression formula of the feasible domain aggregation model is:
Figure FDA0003771621940000011
Figure FDA0003771621940000011
 其中，X0表示所述可行域聚合模型，t是时间段下标，
Figure FDA0003771621940000012
表示所有时间段的集合，T表示时间段的总数量，
Figure FDA0003771621940000013
表示根节点处的有功功率，
Figure FDA0003771621940000014
是
Figure FDA0003771621940000015
的任意子集，
Figure FDA0003771621940000016
和
Figure FDA0003771621940000017
分别表示功率
Figure FDA0003771621940000018
在时间段集合
Figure FDA0003771621940000019
上积分的上下界，上标n表示节点功率，
Figure FDA00037716219400000110
表示由
Figure FDA00037716219400000111
构成的T维列向量。Among them, X 0 represents the feasible domain aggregation model, t is the subscript of the time period,
Figure FDA0003771621940000012
represents the set of all time periods, T represents the total number of time periods,
Figure FDA0003771621940000013
represents the active power at the root node,
Figure FDA0003771621940000014
Yes
Figure FDA0003771621940000015
any subset of ,
Figure FDA0003771621940000016
and
Figure FDA0003771621940000017
power respectively
Figure FDA0003771621940000018
collection in time
Figure FDA0003771621940000019
The upper and lower bounds of the upper integral, the superscript n represents the node power,
Figure FDA00037716219400000110
represented by
Figure FDA00037716219400000111
Consists of a T-dimensional column vector. 4.根据权利要求1所述的方法，其特征在于，所述线性潮流约束的期望目标包括第一线性潮流约束目标和第二线性潮流约束目标。4. The method of claim 1, wherein the desired objectives of the linear power flow constraint include a first linear power flow constraint objective and a second linear power flow constraint objective. 5.根据权利要求4所述的方法，其特征在于，当所述线性潮流约束的期望目标为所述第一线性潮流约束目标时，所述根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，包括：5 . The method according to claim 4 , wherein when the desired target of the linear power flow constraint is the first linear power flow constraint target, the feasible region aggregation is calculated according to the desired target of the linear power flow constraint. 6 . At least one security constraint parameter of the model, and optimizing the feasible domain aggregation model based on the at least one security constraint parameter, including: 将配网中所有变量的可行域均转化为
Figure FDA00037716219400000112
其中，n是变量的编号，xn,t是潮流方程中的第n个变量在时段t的值，xn表示由xn,t构成的T维列向量；The feasible regions of all variables in the distribution network are transformed into
Figure FDA00037716219400000112
Among them, n is the number of the variable, x n, t is the value of the nth variable in the power flow equation in the time period t, x n represents the T-dimensional column vector composed of x n, t ; 对于目标集合
Figure FDA00037716219400000213
的非空子集
Figure FDA00037716219400000232
使得
Figure FDA0003771621940000021
Figure FDA0003771621940000022
满足约束：
Figure FDA0003771621940000023
和潮流约束
Figure FDA0003771621940000024
其中，m是等式的编号，am,n是xn,t在第m个等式中的系数；for the target set
Figure FDA00037716219400000213
nonempty subset of
Figure FDA00037716219400000232
make
Figure FDA0003771621940000021
Figure FDA0003771621940000022
Satisfy the constraints:
Figure FDA0003771621940000023
and current constraints
Figure FDA0003771621940000024
where m is the equation number and a m,n is the coefficient of x n,t in the mth equation; 根据第一优化公式计算安全约束参数
Figure FDA0003771621940000025
和
Figure FDA0003771621940000026
所述第一优化公式为：
Figure FDA0003771621940000027
其中，
Figure FDA00037716219400000214
是
Figure FDA00037716219400000215
的最小值，
Figure FDA00037716219400000216
是
Figure FDA00037716219400000217
的最大值，s.t.表示约束条件；Calculate the safety constraint parameters according to the first optimization formula
Figure FDA0003771621940000025
and
Figure FDA0003771621940000026
The first optimization formula is:
Figure FDA0003771621940000027
in,
Figure FDA00037716219400000214
Yes
Figure FDA00037716219400000215
the minimum value of ,
Figure FDA00037716219400000216
Yes
Figure FDA00037716219400000217
The maximum value of , st represents the constraints; 根据所述安全约束参数
Figure FDA00037716219400000218
和
Figure FDA00037716219400000219
优化所述可行域聚合模型。According to the safety constraint parameters
Figure FDA00037716219400000218
and
Figure FDA00037716219400000219
The feasible domain aggregation model is optimized. 6.根据权利要求4所述的方法，其特征在于，当所述线性潮流约束的期望目标为所述第二线性潮流约束目标时，所述根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，包括：6 . The method according to claim 4 , wherein when the desired target of the linear power flow constraint is the second linear power flow constraint target, the feasible region aggregation is calculated according to the expected target of the linear power flow constraint. 7 . At least one security constraint parameter of the model, and optimizing the feasible domain aggregation model based on the at least one security constraint parameter, including: 根据以下公式计算潮流转移分布因子描述的配网潮流约束：The distribution network power flow constraints described by the power flow transfer distribution factor are calculated according to the following formula:
Figure FDA0003771621940000028
Figure FDA0003771621940000028
Figure FDA0003771621940000029
Figure FDA0003771621940000029
Figure FDA00037716219400000210
Figure FDA00037716219400000210
Figure FDA00037716219400000211
Figure FDA00037716219400000211
Figure FDA00037716219400000212
Figure FDA00037716219400000212
 其中，
Figure FDA00037716219400000220
是支路l在时段t的有功增量，
Figure FDA00037716219400000221
是节点i的有功增量，
Figure FDA00037716219400000222
是支路l的基准功率，
Figure FDA00037716219400000223
是节点i的基准功率，sl,i是支路l关于节点i的潮流转移分布因子，意为节点i的功率增加1个单位使得支路l功率的增量，
Figure FDA00037716219400000224
是配网中所有节点的集合，
Figure FDA00037716219400000225
是去掉平衡节点后的节点集合，
Figure FDA00037716219400000226
是含灵活资源聚合商的节点集合，
Figure FDA00037716219400000227
是配网支路的集合，ΔPi n和
Figure FDA00037716219400000231
分别是由
Figure FDA00037716219400000229
和
Figure FDA00037716219400000228
构成的T维列向量，
Figure FDA00037716219400000230
表示灵活资源聚合商节点处的功率可行域；in,
Figure FDA00037716219400000220
is the active power increment of branch l in time period t,
Figure FDA00037716219400000221
is the active power increment of node i,
Figure FDA00037716219400000222
is the reference power of branch l,
Figure FDA00037716219400000223
is the reference power of node i, s l,i is the power flow transfer distribution factor of branch l about node i, which means that the power of node i increases by 1 unit to make the power of branch l increase,
Figure FDA00037716219400000224
is the set of all nodes in the distribution network,
Figure FDA00037716219400000225
is the set of nodes after removing the balance node,
Figure FDA00037716219400000226
is a set of nodes with flexible resource aggregators,
Figure FDA00037716219400000227
is the set of distribution network branches, ΔP i n and
Figure FDA00037716219400000231
respectively by
Figure FDA00037716219400000229
and
Figure FDA00037716219400000228
Constitute a T-dimensional column vector,
Figure FDA00037716219400000230
represents the power feasible region at the flexible resource aggregator node; 根据所述潮流转移分布因子描述的配网潮流约束从叶节点沿道路不断根据支路的传输容量修正可行域直到根节点，得到安全约束参数，其中，每次修正进行比较和求和运算；According to the power flow constraint of the distribution network described by the power flow transfer distribution factor, the feasible region is continuously modified according to the transmission capacity of the branch along the road to the root node, and the safety constraint parameter is obtained, wherein, a comparison and summation operation is performed for each modification; 基于所述安全约束参数优化所述可行域聚合模型。The feasible region aggregation model is optimized based on the security constraint parameters. 7.一种配电网中可调资源的灵活性聚合装置，其特征在于，包括：7. A flexible aggregation device for adjustable resources in a power distribution network, characterized in that it comprises: 确定模块，用于确定配电网中各个节点上的灵活资源；A determination module for determining flexible resources on various nodes in the distribution network; 构建模块，用于根据所述配电网的预设安全约束条件和所述各个节点上的灵活资源构建所述配电网的可行域聚合模型；a building module for building a feasible domain aggregation model of the power distribution network according to preset security constraints of the power distribution network and flexible resources on the respective nodes; 约束模块，用于根据线性潮流约束的期望目标计算所述可行域聚合模型的至少一个安全约束参数，基于所述至少一个安全约束参数优化所述可行域聚合模型，以利用优化后的可行域聚合模型对所述配电网进行线性潮流安全约束。A constraint module, configured to calculate at least one safety constraint parameter of the feasible region aggregation model according to the desired objective of the linear power flow constraint, and optimize the feasible region aggregation model based on the at least one safety constraint parameter to utilize the optimized feasible region aggregation The model imposes linear power flow safety constraints on the distribution network. 8.根据权利要求7所述的装置，其特征在于，所述构建模块，进一步用于：8. The apparatus of claim 7, wherein the building block is further used for: 根据预设时间间隔将预设时间窗划分为多个时间段，根据每个节点上灵活资源在每个时间段的边界参数构建所述每个节点上灵活资源的聚合可行域；根据预设配网安全约束和预设线性配网潮流方程聚合所述每个节点上灵活资源的聚合可行域，得到所述配电网的可行域聚合模型。The preset time window is divided into multiple time periods according to the preset time interval, and the aggregate feasible region of the flexible resources on each node is constructed according to the boundary parameters of the flexible resources on each node in each time period; Network security constraints and preset linear distribution network power flow equations aggregate the aggregated feasible regions of the flexible resources on each node to obtain an aggregated feasible region model of the distribution network. 9.一种电子设备，其特征在于，包括：存储器、处理器及存储在所述存储器上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程序，以实现如权利要求1-6任一项所述的配电网中可调资源的灵活性聚合方法。9. An electronic device, characterized in that it comprises: a memory, a processor and a computer program stored on the memory and running on the processor, the processor executing the program to realize the method as claimed in the claim The flexible aggregation method of adjustable resources in a distribution network according to any one of requirements 1-6. 10.一种计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行，以用于实现如权利要求1-6任一项所述的配电网中可调资源的灵活性聚合方法。10. A computer-readable storage medium on which a computer program is stored, characterized in that the program is executed by a processor to implement the adjustable power distribution network according to any one of claims 1-6. A flexible aggregation method for resources.
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CN116131259A (en) * 2023-02-09 2023-05-16 中国南方电网有限责任公司 Power resource scheduling method and device based on time aggregation and computer equipment
CN116131259B (en) * 2023-02-09 2024-02-06 中国南方电网有限责任公司 Power resource scheduling method and device based on time aggregation and computer equipment
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