CN110190613A - Power distribution adjustment device and power distribution adjustment method - Google Patents
Power distribution adjustment device and power distribution adjustment method Download PDFInfo
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Abstract
本发明的实施例提供的配电调节装置和配电调节方法，涉及电力电子技术领域。该配电调节装置包括多个储能器和多个电流采集器，多个储能器的一端均电连接于配电变压器与目标负载之间，且配电变压器的每一相与目标负载形成的支路上均设置有一连接点，连接点与多个储能器中的其中一个电连接，连接点与目标负载之间的线路上设置多个电流采集器中的其中一个，多个电流采集器与多个储能器一一对应电连接；电流采集器实时采集配电变压器的其中一相向目标负载提供的电流信息；若电流信息对应的电流值不低于第一预设电流值，储能器则向目标负载提供补偿电流。通过该配电调节装置可以提高配电变压器的供电可靠性和使用寿命。
The power distribution regulating device and the power distribution regulating method provided by the embodiments of the present invention relate to the technical field of power electronics. The power distribution regulation device includes a plurality of energy storage devices and a plurality of current collectors, one end of the plurality of energy storage devices is electrically connected between the distribution transformer and the target load, and each phase of the distribution transformer and the target load form a There is a connection point on each branch, the connection point is electrically connected to one of the multiple energy storage devices, one of the multiple current collectors is set on the line between the connection point and the target load, and the multiple current collectors One-to-one electrical connection with multiple energy storage devices; the current collector collects the current information provided by one of the phases of the distribution transformer to the target load in real time; if the current value corresponding to the current information is not lower than the first preset current value, the energy storage The converter provides compensation current to the target load. The power distribution regulating device can improve the power supply reliability and service life of the distribution transformer.
Description
技术领域technical field
本发明涉及电力电子技术领域，具体而言，涉及一种配电调节装置和配电调节方法。The present invention relates to the technical field of power electronics, in particular, to a power distribution regulating device and a power distribution regulating method.
背景技术Background technique
由于季节的变化，居民对用电的需求会不一样，故会对配电变压器造成季节性过载的问题。目前的季节性过载治理策略一般是扩大配电变压器容量或三相并网储能馈电补偿，采用扩大配电变压器容量的策略会在正常负荷功率时，台变负载率过低，且不能解决配电变压器三相电流不平衡的问题。采用三相并网储能馈电补偿的策略在对配电变压器进行馈电补偿时，对每相补偿的电流是相同幅值，并不能解决配电变压器三相电流不平衡的问题。Due to seasonal changes, residents' demand for electricity will be different, so it will cause seasonal overload problems for distribution transformers. The current seasonal overload control strategy is generally to expand the capacity of distribution transformers or three-phase grid-connected energy storage feed compensation. The strategy of expanding the capacity of distribution transformers will cause the load rate of the transformer to be too low under normal load power and cannot solve the problem. The problem of unbalanced three-phase current of distribution transformers. When using the three-phase grid-connected energy storage feed compensation strategy to compensate the distribution transformer, the compensation current for each phase is the same amplitude, which cannot solve the problem of unbalanced three-phase current of the distribution transformer.
发明内容Contents of the invention
本发明的目的包括，例如，提供了一种配电调节装置和配电调节方法，其能够在解决配电变压器季节性过载时，也能解决配电变压器三相电流不平衡的问题。The purpose of the present invention includes, for example, to provide a power distribution regulating device and a power distribution regulating method, which can solve the problem of unbalanced three-phase current of the distribution transformer while solving the seasonal overload of the distribution transformer.
本发明的实施例可以这样实现：Embodiments of the present invention can be realized like this:
第一方面，本发明实施例提供一种配电调节装置，包括多个储能器和多个电流采集器，所述多个储能器的一端均电连接于配电变压器与目标负载之间，且所述配电变压器的每一相与所述目标负载形成的支路上均设置有一连接点，所述连接点用于与所述多个储能器中的其中一个电连接，所述连接点与所述目标负载之间的线路上设置所述多个电流采集器中的其中一个，所述多个电流采集器与所述多个储能器一一对应电连接；所述电流采集器用于实时采集所述配电变压器的其中一相向所述目标负载提供的电流信息，并将所述电流信息传输至所述储能器；所述储能器用于将所述电流信息对应的电流值与第一预设电流值进行比较，若所述电流信息对应的电流值不低于所述第一预设电流值，则向所述目标负载提供补偿电流。In the first aspect, an embodiment of the present invention provides a power distribution regulating device, including a plurality of energy storage devices and a plurality of current collectors, and one end of the plurality of energy storage devices is electrically connected between the distribution transformer and the target load , and each phase of the distribution transformer and the branch formed by the target load are provided with a connection point, the connection point is used to electrically connect with one of the plurality of energy storage devices, the connection One of the plurality of current collectors is set on the line between the point and the target load, and the plurality of current collectors are electrically connected to the plurality of energy storage devices in one-to-one correspondence; Collecting the current information provided by one of the phases of the distribution transformer to the target load in real time, and transmitting the current information to the energy storage; the energy storage is used to store the current value corresponding to the current information Comparing with the first preset current value, if the current value corresponding to the current information is not lower than the first preset current value, then provide the compensation current to the target load.
在可选的实施方式中，所述连接点在所述支路上的位置与所述目标负载相距预设距离。In an optional embodiment, the position of the connection point on the branch road is a preset distance away from the target load.
在可选的实施方式中，所述储能器采用储能变流器。In an optional embodiment, the energy storage device is an energy storage converter.
在可选的实施方式中，所述电流采集器采用开口电流采集互感器。In an optional implementation manner, the current collector adopts an open current collecting transformer.
第二方面，本发明实施例提供一种配电调节方法，应用于储能器，多个所述储能器的一端均电连接于配电变压器与目标负载之间，且所述配电变压器的每一相与所述目标负载形成的支路上均设置有一连接点，所述连接点用于与多个所述储能器中的其中一个电连接，所述连接点与所述目标负载之间的线路上设置有电流采集器，多个所述电流采集器与多个所述储能器一一对应电连接，所述电流采集器用于实时采集所述配电变压器的其中一相向所述目标负载提供的电流信息，所述方法包括：接收所述电流采集器发送的所述电流信息，并得到所述电流信息对应的电流值；若所述电流信息对应的电流值不低于第一预设电流值，则向所述目标负载提供补偿电流。In the second aspect, an embodiment of the present invention provides a power distribution adjustment method, which is applied to an energy storage device. One end of a plurality of the energy storage devices is electrically connected between the distribution transformer and the target load, and the distribution transformer A connection point is provided on the branch formed between each phase of each phase and the target load, and the connection point is used to electrically connect with one of the plurality of energy storage devices, between the connection point and the target load A current collector is arranged on the line between, and a plurality of the current collectors are electrically connected to a plurality of the energy storage devices one by one, and the current collector is used to collect in real time one of the phases of the distribution transformer. The current information provided by the target load, the method includes: receiving the current information sent by the current collector, and obtaining the current value corresponding to the current information; if the current value corresponding to the current information is not lower than the first If the preset current value is set, the compensation current is provided to the target load.
在可选的实施方式中，所述储能器向所述目标负载提供补偿电流的步骤包括：根据所述电流信息对应的电流值、所述第一预设电流值计算得到所述补偿电流。In an optional implementation manner, the step of the energy storage providing compensation current to the target load includes: calculating the compensation current according to a current value corresponding to the current information and the first preset current value.
在可选的实施方式中，所述补偿电流采用以下公式计算得到：In an optional implementation manner, the compensation current is calculated using the following formula:
Imse＝ImL-Imset；Imse=ImL-Imset;
其中，所述ImL表示所述电流信息对应的电流值，所述Imset表示所述第一预设电流值。Wherein, the ImL represents a current value corresponding to the current information, and the Imset represents the first preset current value.
在可选的实施方式中，所述第一预设电流值根据所述配电变压器的任意一相与所述目标负载形成的支路的额定电流和与所述支路电连接的储能器的额定电流计算得到。In an optional embodiment, the first preset current value is based on the rated current of the branch circuit formed by any phase of the distribution transformer and the target load and the energy storage device electrically connected to the branch circuit The rated current is calculated.
在可选的实施方式中，所述第一预设电流值采用以下公式计算得到：In an optional implementation manner, the first preset current value is calculated using the following formula:
Imset＝e*Ime-Imc；Imset = e*Ime-Imc;
其中，所述e表示余量参数，所述Ime表示所述配电变压器的任意一相与所述目标负载形成的支路的额定电流；所述Imc表示与所述支路电连接的储能器的额定电流。Wherein, the e represents a margin parameter, the Ime represents the rated current of the branch formed by any phase of the distribution transformer and the target load; the Imc represents the energy storage electrically connected to the branch rated current of the device.
在可选的实施方式中，所述配电调节方法还包括：若所述电流信息对应的电流值低于所述第一预设电流值，则处于待机状态或处于充电状态。In an optional implementation manner, the method for regulating power distribution further includes: if the current value corresponding to the current information is lower than the first preset current value, being in a standby state or in a charging state.
本发明实施例的配电调节装置和配电调节方法具有以下有益效果：通过在配电变压器的每一相与目标负载形成的支路上均设置有一连接点，该连接点用于与多个储能器中的其中一个电连接，该连接点与目标负载之间的线路上设置多个电流采集器中的其中一个；电流采集器用于实时采集配电变压器的其中一相向目标负载提供的电流信息，并将电流信息传输至储能器；储能器用于将该电流信息对应的电流值与第一预设电流值进行比较，若电流信息对应的电流值不低于第一预设电流值，则向目标负载提供补偿电流。可见，在配电变压器的某一相向目标负载供电时，若出现过载情况，该相与目标负载形成的支路上电连接的储能器提供补偿电流，就能解决配电变压器季节性过载的问题。同时，由于配电变压器的每一相与目标负载供电的支路均分别对应电连接有储能器，每个支路电连接的储能器能够根据对应连接的支路的实际过载情况，对应提供不同的补偿电流，能够使得配电变压器三相电流处于平衡状态。通过一套配电调节装置既能解决配电变压器的季节性过载问题，还能解决配电变压器的三相电流不平衡的问题，不仅成本低，还提高了供电可靠性，延长了配电变压器的使用寿命。The power distribution regulating device and the power distribution regulating method in the embodiments of the present invention have the following beneficial effects: by setting a connection point on the branch formed by each phase of the distribution transformer and the target load, the connection point is used to connect with multiple power storage one of the energy devices, and one of the multiple current collectors is set on the line between the connection point and the target load; the current collector is used to collect the current information provided by one of the phases of the distribution transformer to the target load in real time , and transmit the current information to the energy storage; the energy storage is used to compare the current value corresponding to the current information with the first preset current value, if the current value corresponding to the current information is not lower than the first preset current value, Then provide compensation current to the target load. It can be seen that when a certain phase of the distribution transformer supplies power to the target load, if an overload occurs, the energy storage connected to the branch formed by the phase and the target load can provide compensation current, which can solve the problem of seasonal overload of the distribution transformer . At the same time, since each phase of the distribution transformer is electrically connected to the branch circuit supplied by the target load with an energy storage device, the energy storage device connected to each branch circuit can Providing different compensation currents can make the three-phase current of the distribution transformer in a balanced state. A set of power distribution regulating device can not only solve the seasonal overload problem of distribution transformers, but also solve the problem of unbalanced three-phase current of distribution transformers. service life.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.
图1为本发明实施例提供的配电调节装置的应用环境示意图；FIG. 1 is a schematic diagram of an application environment of a power distribution regulating device provided by an embodiment of the present invention;
图2为本发明实施例提供的配电调节装置的一种结构示意图；Fig. 2 is a schematic structural diagram of a power distribution regulating device provided by an embodiment of the present invention;
图3为本发明实施例提供的配电调节装置的另一种结构示意图；Fig. 3 is another schematic structural diagram of a power distribution regulating device provided by an embodiment of the present invention;
图4为本发明实施例提供的配电调节方法的一种流程示意图；FIG. 4 is a schematic flowchart of a power distribution regulation method provided by an embodiment of the present invention;
图5为本发明实施例提供的配电调节方法的另一种流程示意图。FIG. 5 is another schematic flow chart of a power distribution regulation method provided by an embodiment of the present invention.
图标：10-配电调节系统；100-配电调节装置；110-储能器；120-电流采集器；130-支路；140-连接点；200-配电变压器；300-负载；310-目标负载。Icons: 10-distribution regulation system; 100-distribution regulation device; 110-energy storage; 120-current collector; 130-branch; 140-connection point; 200-distribution transformer; 300-load; 310- target load.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.
在本发明的描述中，需要说明的是，若出现术语“上”、“下”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be noted that if the orientation or positional relationship indicated by the terms "upper", "lower", "inner" and "outer" appear, it is based on the orientation or positional relationship shown in the drawings, or It is the orientation or positional relationship that the invention product is usually placed in use, and it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , and therefore cannot be construed as a limitation of the present invention.
此外，若出现术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。In addition, terms such as "first" and "second" are used only for distinguishing descriptions, and should not be understood as indicating or implying relative importance.
需要说明的是，在不冲突的情况下，本发明的实施例中的特征可以相互结合。It should be noted that, in the case of no conflict, the features in the embodiments of the present invention may be combined with each other.
请参考图1，为本实施例提供了的配电调节装置100的环境示意图，该配电调节装置100应用于配电调节系统10，配电调节系统10还包括配电变压器200。配电调节装置100设置在配电变压器200与负载300之间，配电变压器200可以同时向多个负载300供电，即配电变压器200的三相输电线路与多个负载300形成多个支路，配电变压器200的三相输电线路与多个负载300形成的多个支路上均设置有配电调节装置100。通过该配电调节装置100能够实时监控每个支路的实际过载情况，为每个支路对应提供不同的补偿电流。通过一套配电调节装置100既能解决配电变压器200的季节性过载问题，还能解决配电变压器200的三相电流不平衡的问题。不仅成本低，还提高了供电可靠性，延长了配电变压器200的使用寿命。Please refer to FIG. 1 , which is a schematic diagram of an environment of a power distribution regulation device 100 provided in this embodiment. The power distribution regulation device 100 is applied to a power distribution regulation system 10 , and the power distribution regulation system 10 also includes a distribution transformer 200 . The power distribution regulating device 100 is arranged between the distribution transformer 200 and the load 300, and the distribution transformer 200 can supply power to multiple loads 300 at the same time, that is, the three-phase transmission line of the distribution transformer 200 forms multiple branches with multiple loads 300 , on multiple branches formed by the three-phase power transmission line of the distribution transformer 200 and multiple loads 300, the power distribution regulating device 100 is arranged on each. The power distribution regulating device 100 can monitor the actual overload situation of each branch in real time, and provide different compensation currents for each branch. A set of power distribution regulating device 100 can not only solve the problem of seasonal overload of the distribution transformer 200 , but also solve the problem of unbalanced three-phase current of the distribution transformer 200 . Not only the cost is low, but also the reliability of power supply is improved, and the service life of the distribution transformer 200 is prolonged.
由于配电调节装置100对配电变压器200的三相输电线路与多个负载300形成的每个支路的工作原理均相同，在本实施例中只对电调节装置设置在配电变压器200的三相输电线路与目标负载形成的三个支路进行详细说明，其中目标负载为多个负载300中的一个。请参照图2和图3，为配电调节装置100的示意图，该配电调节装置100包括多个储能器110和多个电流采集器120，多个储能器110的一端均电连接于配电变压器200与目标负载310之间，且配电变压器200的每一相与目标负载310形成的支路130上均设置有连接点140，连接点140用于与多个储能器110中的其中一个电连接，连接点140与目标负载310之间的线路上设置多个电流采集器120中的其中一个，多个电流采集器120与多个储能器110一一对应电连接。Since the power distribution regulating device 100 works the same for each branch formed by the three-phase transmission line of the distribution transformer 200 and multiple loads 300, in this embodiment only the power regulating device is installed on the distribution transformer 200 The three branches formed by the three-phase transmission line and the target load will be described in detail, where the target load is one of the multiple loads 300 . Please refer to FIG. 2 and FIG. 3, which are schematic diagrams of a power distribution regulation device 100, which includes a plurality of energy storage devices 110 and a plurality of current collectors 120, and one end of the plurality of energy storage devices 110 is electrically connected to Between the distribution transformer 200 and the target load 310, and on the branch circuit 130 formed by each phase of the distribution transformer 200 and the target load 310, a connection point 140 is provided, and the connection point 140 is used to connect with multiple energy storage devices 110 One of the electrical connections, one of the plurality of current collectors 120 is provided on the line between the connection point 140 and the target load 310 , and the plurality of current collectors 120 are electrically connected to the plurality of energy storage devices 110 in one-to-one correspondence.
在本实施例中，电流采集器120用于实时采集配电变压器200的其中一相向目标负载310提供的电流信息，并将电流信息传输至储能器110。储能器110用于将该电流信息对应的电流值与第一预设电流值进行比较，若电流信息对应的电流值不低于第一预设电流值，则向目标负载310提供补偿电流。In this embodiment, the current collector 120 is used to collect the current information provided by one phase of the distribution transformer 200 to the target load 310 in real time, and transmit the current information to the energy storage device 110 . The energy storage 110 is used to compare the current value corresponding to the current information with the first preset current value, and provide compensation current to the target load 310 if the current value corresponding to the current information is not lower than the first preset current value.
可以理解，配电变压器200的A相、B相和C相与目标负载310会分别形成三个支路130，多个储能器110包括第一储能器、第二储能器和第三储能器，多个电流采集器120包括第一电流采集器、第二电流采集器和第三电流采集器。配电变压器200的A相与目标负载310形成的支路130上设置有第一连接点，第一连接点用于与第一储能器的一端电连接，第一连接点与目标负载310之间的线路上设置有第一电流采集器；配电变压器200的B相与目标负载310形成的支路130上设置有第二连接点，第二连接点用于与第二储能器的一端电连接，第二连接点与目标负载310之间的线路上设置有第二电流采集器；配电变压器200的C相与目标负载310形成的支路130上设置有第三连接点，第三连接点用于与第三储能器的一端电连接，第三连接点与目标负载310之间的线路上设置有第三电流采集器。It can be understood that the phase A, phase B and phase C of the distribution transformer 200 and the target load 310 will respectively form three branches 130, and the multiple energy storages 110 include a first energy storage, a second energy storage and a third energy storage. Energy storage, the plurality of current collectors 120 includes a first current collector, a second current collector and a third current collector. The branch circuit 130 formed by the phase A of the distribution transformer 200 and the target load 310 is provided with a first connection point. The first connection point is used to electrically connect with one end of the first energy storage device. A first current collector is arranged on the line between; a second connection point is arranged on the branch circuit 130 formed by the B phase of the distribution transformer 200 and the target load 310, and the second connection point is used for connecting with one end of the second energy storage electrical connection, a second current collector is set on the line between the second connection point and the target load 310; a third connection point is set on the branch circuit 130 formed by the C phase of the distribution transformer 200 and the target load 310, and the third The connection point is used to electrically connect with one end of the third energy storage, and a third current collector is arranged on the line between the third connection point and the target load 310 .
其中，第一电流采集器用于实时采集配电变压器200的A相向目标负载310提供的第一电流信息，并将第一电流信息传输至第一储能器；第一储能器用于将第一电流信息对应的电流值与第一预设电流值进行比较，若第一电流信息对应的电流值不低于第一预设电流值，第一储能器则向目标负载310提供第一补偿电流。第二电流采集器用于实时采集配电变压器200的B相向目标负载310提供的第二电流信息，并将第二电流信息传输至第二储能器；第二储能器用于将第二电流信息对应的电流值与第一预设电流值进行比较，若第二电流信息对应的电流值不低于第一预设电流值，第二储能器则向目标负载310提供第二补偿电流。第三电流采集器用于实时采集配电变压器200的C相向目标负载310提供的第三电流信息，并将第三电流信息传输至第三储能器；第三储能器用于将第三电流信息对应的电流值与第一预设电流值进行比较，若第三电流信息对应的电流值不低于第一预设电流值，第三储能器则向目标负载310提供第三补偿电流。Wherein, the first current collector is used to collect the first current information provided by the A phase of the distribution transformer 200 to the target load 310 in real time, and transmit the first current information to the first energy storage; The current value corresponding to the current information is compared with the first preset current value, and if the current value corresponding to the first current information is not lower than the first preset current value, the first energy storage provides the first compensation current to the target load 310 . The second current collector is used to collect the second current information provided by the B-phase of the distribution transformer 200 to the target load 310 in real time, and transmit the second current information to the second energy storage; the second energy storage is used to store the second current information The corresponding current value is compared with the first preset current value, and if the current value corresponding to the second current information is not lower than the first preset current value, the second energy storage provides the second compensation current to the target load 310 . The third current collector is used to collect the third current information provided by the C-phase of the distribution transformer 200 to the target load 310 in real time, and transmit the third current information to the third energy storage; the third energy storage is used to transfer the third current information The corresponding current value is compared with the first preset current value, and if the current value corresponding to the third current information is not lower than the first preset current value, the third energy storage provides the third compensation current to the target load 310 .
可以理解，电流信息包括第一电流信息、第二电流信息和第三电流信息，补偿电流包括第一补偿电流、第二补偿电流和第三补偿电流。由于目标负载310对配电变压器200的A相提供的电能需求、目标负载310对配电变压器200的B相提供的电能需求和目标负载310对配电变压器200的C相提供的电能需求一般情况下并不会完全一样。所以第一电流采集器采集的第一电流信息、第二电流采集器采集的第二电流信息和第三电流采集器采集的第三电流信息不会相同，那么第一储能器对应提供的第一补偿电流、第二储能器对应提供的第二补偿电流和第三储能器对应提供的第三补偿电流也不会相同。It can be understood that the current information includes first current information, second current information, and third current information, and the compensation current includes a first compensation current, a second compensation current, and a third compensation current. Due to the power demand provided by the target load 310 on the A phase of the distribution transformer 200, the power demand provided by the target load 310 on the B phase of the distribution transformer 200, and the power demand provided by the target load 310 on the C phase of the distribution transformer 200 It won't be exactly the same. Therefore, the first current information collected by the first current collector, the second current information collected by the second current collector, and the third current information collected by the third current collector will not be the same. The compensation current, the second compensation current provided by the second energy storage and the third compensation current provided by the third energy storage will not be the same.
可见，通过在每个支路130电连接有储能器110，以及每个支路130设置有电流采集器120，能够实时监控每个支路130的实际过载情况，为每个支路130提供对应的补偿电流。在解决配电变压器200的季节性过载问题的同时，还能使得配电变压器200三相电流处于平衡状态。It can be seen that by electrically connecting the energy storage 110 to each branch 130, and each branch 130 is provided with a current collector 120, the actual overload situation of each branch 130 can be monitored in real time, and each branch 130 can be provided with Corresponding compensation current. While solving the seasonal overload problem of the distribution transformer 200, the three-phase current of the distribution transformer 200 can also be kept in a balanced state.
在本实施例中，储能器110根据电流信息对应的电流值、第一预设电流值计算得到补偿电流。可以理解，第一储能器根据配电变压器200的A相向目标负载310提供的第一电流信息和第一预设电流值计算得到第一补偿电流，第二储能器根据配电变压器200的B相向目标负载310提供的第二电流信息和第一预设电流值计算得到第二补偿电流，第三储能器根据配电变压器200的C相向目标负载310提供的第三电流信息和第一预设电流值计算得到第三补偿电流。In this embodiment, the energy storage device 110 calculates the compensation current according to the current value corresponding to the current information and the first preset current value. It can be understood that the first energy storage device calculates the first compensation current according to the first current information provided by the A-phase of the distribution transformer 200 to the target load 310 and the first preset current value, and the second energy storage device calculates the first compensation current according to the distribution transformer 200 The second compensation current is obtained by calculating the second current information provided by phase B to the target load 310 and the first preset current value, and the third energy storage device provides the third current information and the first The preset current value is calculated to obtain the third compensation current.
具体地，可以采用以下公式计算得到补偿电流：Specifically, the compensation current can be calculated using the following formula:
Imse＝ImL-Imset；Imse=ImL-Imset;
其中，ImL表示电流信息对应的电流值，Imset表示第一预设电流值。Wherein, ImL represents a current value corresponding to the current information, and Imset represents a first preset current value.
可以理解，当第一储能器根据配电变压器200的A相向目标负载310提供的第一电流信息和第一预设电流值计算得到第一补偿电流时，ImL表示第一电流信息对应的电流值；当第二储能器根据配电变压器200的B相向目标负载310提供的第二电流信息和第一预设电流值计算得到第二补偿电流时，ImL表示第二电流信息对应的电流值；当第三储能器根据配电变压器200的C相向目标负载310提供的第三电流信息和第一预设电流值计算得到第三补偿电流时，ImL表示第三电流信息对应的电流值。It can be understood that when the first energy storage device calculates the first compensation current according to the first current information provided by the A-phase of the distribution transformer 200 to the target load 310 and the first preset current value, ImL represents the current corresponding to the first current information value; when the second energy storage device calculates the second compensation current according to the second current information provided by the B-phase of the distribution transformer 200 to the target load 310 and the first preset current value, ImL represents the current value corresponding to the second current information ; When the third accumulator calculates the third compensation current according to the third current information provided by the C-phase of the distribution transformer 200 to the target load 310 and the first preset current value, ImL represents the current value corresponding to the third current information.
在本实施例中，第一预设电流值可以根据配电变压器200的任意一相与目标负载310形成的支路130的额定电流和与支路130电连接的储能器110的额定电流计算得到。In this embodiment, the first preset current value can be calculated according to the rated current of the branch circuit 130 formed by any phase of the distribution transformer 200 and the target load 310 and the rated current of the energy storage device 110 electrically connected to the branch circuit 130 get.
可以理解，当第一储能器根据配电变压器200的A相向目标负载310提供的第一电流信息和第一预设电流值计算得到第一补偿电流时，第一预设电流值根据配电变压器200的A相与目标负载310形成的支路130的额定电流和第一储能器的额定电流计算得到。当第二储能器根据配电变压器200的B相向目标负载310提供的第二电流信息和第一预设电流值计算得到第二补偿电流时，第一预设电流值根据配电变压器200的B相与目标负载310形成的支路130的额定电流和第二储能器的额定电流计算得到。当第三储能器根据配电变压器200的C相向目标负载310提供的第三电流信息和第一预设电流值计算得到第三补偿电流时，第一预设电流值根据配电变压器200的C相与目标负载310形成的支路130的额定电流和第三储能器的额定电流计算得到。It can be understood that when the first energy storage device calculates the first compensation current according to the first current information provided by the A-phase of the distribution transformer 200 to the target load 310 and the first preset current value, the first preset current value is based on the power distribution The rated current of the branch circuit 130 formed by the phase A of the transformer 200 and the target load 310 and the rated current of the first energy storage are calculated. When the second energy storage device calculates the second compensation current according to the second current information provided by the B-phase of the distribution transformer 200 to the target load 310 and the first preset current value, the first preset current value is calculated according to the distribution transformer 200 The rated current of the branch circuit 130 formed by phase B and the target load 310 and the rated current of the second energy storage are calculated. When the third energy storage device calculates the third compensation current according to the third current information provided by the C-phase of the distribution transformer 200 to the target load 310 and the first preset current value, the first preset current value is based on the distribution transformer 200 The rated current of the branch circuit 130 formed by phase C and the target load 310 and the rated current of the third energy storage are calculated.
具体地，第一预设电流值可以采用以下公式计算得到：Specifically, the first preset current value can be calculated using the following formula:
Imset＝e*Ime-Imc；Imset = e*Ime-Imc;
其中，e表示余量参数，Ime表示配电变压器200的任意一相与目标负载310形成的支路130的额定电流；Imc表示与支路130电连接的储能器110的额定电流。Wherein, e represents the margin parameter, Ime represents the rated current of the branch circuit 130 formed by any phase of the distribution transformer 200 and the target load 310 ; Imc represents the rated current of the energy storage device 110 electrically connected to the branch circuit 130 .
可以理解，当第一预设电流值根据配电变压器200的A相与目标负载310形成的支路130的额定电流和第一储能器的额定电流计算得到时，Ime表示配电变压器200的A相与目标负载310形成的支路130的额定电流，Imc表示第一储能器的额定电流。当第一预设电流值根据配电变压器200的B相与目标负载310形成的支路130的额定电流和第二储能器的额定电流计算得到时，Ime表示配电变压器200的B相与目标负载310形成的支路130的额定电流，Imc表示第二储能器的额定电流。当第一预设电流值根据配电变压器200的C相与目标负载310形成的支路130的额定电流和第三储能器的额定电流计算得到时，Ime表示配电变压器200的C相与目标负载310形成的支路130的额定电流，Imc表示第三储能器的额定电流。It can be understood that when the first preset current value is calculated according to the rated current of the branch circuit 130 formed by the phase A of the distribution transformer 200 and the target load 310 and the rated current of the first energy storage, Ime represents the current value of the distribution transformer 200 The rated current of the branch circuit 130 formed by phase A and the target load 310 , Imc represents the rated current of the first energy storage. When the first preset current value is calculated according to the rated current of the branch circuit 130 formed by the B-phase of the distribution transformer 200 and the target load 310 and the rated current of the second energy storage, Ime represents the B-phase and the target load 310 of the distribution transformer 200. The rated current of the branch circuit 130 formed by the target load 310 , Imc denotes the rated current of the second energy store. When the first preset current value is calculated according to the rated current of the branch circuit 130 formed by the C-phase of the distribution transformer 200 and the target load 310 and the rated current of the third energy storage device, Ime represents the C-phase of the distribution transformer 200 and the target load 310. The rated current of the branch circuit 130 formed by the target load 310 , Imc denotes the rated current of the third energy store.
其中，配电变压器200的A相与目标负载310形成的支路130的额定电流、配电变压器200的B相与目标负载310形成的支路130的额定电流以及配电变压器200的C相与目标负载310形成的支路130的额定电流可以相同，也可以不同。第一储能器的额定电流、第二储能器的额定电流以及第三储能器的额定电流可以相同，也可以不同。Among them, the rated current of the branch circuit 130 formed by the phase A of the distribution transformer 200 and the target load 310, the rated current of the branch circuit 130 formed by the phase B of the distribution transformer 200 and the target load 310, and the phase C of the distribution transformer 200 and the target load 310 The rated currents of the branches 130 formed by the target loads 310 may be the same or different. The rated current of the first energy storage, the rated current of the second energy storage and the rated current of the third energy storage may be the same or different.
在本实施例中，为了保证每个支路130出现过载时，储能器110有一定的反应时间，余量参数e可以设置为80％。当然，可以根据实际情况对余量参数e进行设定，在此并不作限定。In this embodiment, in order to ensure that the energy storage device 110 has a certain response time when each branch 130 is overloaded, the margin parameter e can be set to 80%. Of course, the margin parameter e can be set according to actual conditions, which is not limited here.
进一步地，在本实施例中，储能器110用于将电流信息对应的电流值与第一预设电流值进行比较时，若电流信息对应的电流值低于第一预设电流值，储能器110则处于待机状态或充电状态。Further, in this embodiment, when the energy storage device 110 is used to compare the current value corresponding to the current information with the first preset current value, if the current value corresponding to the current information is lower than the first preset current value, the storage The energy device 110 is in a standby state or a charging state.
可以理解，第一储能器用于将第一电流采集器采集的配电变压器200的A相向目标负载310提供的第一电流信息与第一预设电流值进行比较，若第一电流信息对应的电流值低于第一预设电流值，第一储能器则处于待机状态或充电状态。第一储能器处于待机状态可以理解为：第一储能器即不向目标负载310提供第一补偿电流，也不会接收配电变压器200的A相提供的电能。第一储能器处于充电状态可以理解为：第一储能器接收配电变压器200的A相提供的电能进行充电。It can be understood that the first energy storage is used to compare the first current information collected by the first current collector from the A-phase of the distribution transformer 200 to the target load 310 with the first preset current value, if the first current information corresponds to If the current value is lower than the first preset current value, the first energy storage device is in a standby state or a charging state. It can be understood that the first energy storage is in the standby state: the first energy storage neither provides the first compensation current to the target load 310 nor receives the electric energy provided by the A-phase of the distribution transformer 200 . The fact that the first energy storage is in the charging state can be understood as: the first energy storage receives electric energy provided by phase A of the distribution transformer 200 for charging.
第二储能器用于将第二电流采集器采集的配电变压器200的B相向目标负载310提供的第二电流信息与第一预设电流值进行比较，若第二电流信息对应的电流值低于第一预设电流值，第二储能器则处于待机状态或充电状态。第二储能器处于待机状态可以理解为：第二储能器即不向目标负载310提供第二补偿电流，也不会接收配电变压器200的B相提供的电能。第二储能器处于充电状态可以理解为：第二储能器接收配电变压器200的B相提供的电能进行充电。The second energy storage is used to compare the second current information provided by the B-phase of the distribution transformer 200 to the target load 310 collected by the second current collector with the first preset current value, if the current value corresponding to the second current information is low At the first preset current value, the second energy storage device is in a standby state or a charging state. It can be understood that the second energy storage is in the standby state: the second energy storage neither provides the second compensation current to the target load 310 nor receives the electric energy provided by the B-phase of the distribution transformer 200 . The fact that the second energy storage is in the charging state can be understood as: the second energy storage receives electric energy provided by phase B of the distribution transformer 200 for charging.
第三储能器用于将第三电流采集器采集的配电变压器200的C相向目标负载310提供的第三电流信息与第一预设电流值进行比较，若第三电流信息对应的电流值低于第一预设电流值，第三储能器则处于待机状态或充电状态。第三储能器处于待机状态可以理解为：第三储能器即不向目标负载310提供第三补偿电流，也不会接收配电变压器200的C相提供的电能。第三储能器处于充电状态可以理解为：第三储能器接收配电变压器200的C相提供的电能进行充电。The third energy storage device is used to compare the third current information provided by the C-phase of the distribution transformer 200 to the target load 310 collected by the third current collector with the first preset current value, and if the current value corresponding to the third current information is low At the first preset current value, the third energy storage device is in a standby state or a charging state. It can be understood that the third energy storage is in the standby state: the third energy storage neither provides the third compensation current to the target load 310 nor receives the electric energy provided by the C-phase of the distribution transformer 200 . The fact that the third energy storage is in the charging state can be understood as: the third energy storage receives electric energy provided by phase C of the distribution transformer 200 for charging.
在本实施例中，将电流采集器120设置在连接点140与目标负载310之间的线路上，使得电流采集器120采集的电流信息为配电变压器200的其中一相向目标负载310提供的。若将电流采集器120设置在连接点140与配电变压器200之间的线路上，那么电流采集器120采集的电流信息可能会是配电变压器200的其中一相向多个负载300提供的，也可能是配电变压器200的其中一相向目标负载310和电连接于该支路130上的储能器110提供的。In this embodiment, the current collector 120 is set on the line between the connection point 140 and the target load 310 , so that the current information collected by the current collector 120 is provided by one phase of the distribution transformer 200 to the target load 310 . If the current collector 120 is set on the line between the connection point 140 and the distribution transformer 200, then the current information collected by the current collector 120 may be provided by one of the phases of the distribution transformer 200 to multiple loads 300, or It may be provided by one of the phases of the distribution transformer 200 to the target load 310 and the energy storage 110 electrically connected to the branch 130 .
在本实施例中，连接点140在支路130上的位置与目标负载310相距预设距离。其中，预设距离可以为500m，也可以为200m，在此并不作限定。但在本实施例中，优选于200m，即每个支路130上的连接点140与负载300之间相距200m。将每个支路130上的连接点140与负载300之间的距离设置为200m，使得配电调节装置100对解决配电变压器200的季节性过载和三相电流不平衡的效果最佳。In this embodiment, the position of the connection point 140 on the branch 130 is a predetermined distance away from the target load 310 . Wherein, the preset distance may be 500m or 200m, which is not limited here. But in this embodiment, it is preferably less than 200m, that is, the distance between the connection point 140 on each branch 130 and the load 300 is 200m. The distance between the connection point 140 on each branch 130 and the load 300 is set to 200m, so that the power distribution regulation device 100 has the best effect on solving the seasonal overload and three-phase current imbalance of the distribution transformer 200 .
进一步地，在本实施例中，储能器110可以采用储能变流器(Power ConversionSystem，PCS)，储能变流器由DC/AC双向变流器(图未示)、控制单元(图未示)等构成。控制单元用于接收电流采集器120发送的实时采集配电变压器200的其中一相向目标负载310提供的电流信息，并将该电流信息对应的电流值与第一预设电流值进行比较，若电流信息对应的电流值不低于第一预设电流值，控制单元则控制DC/AC双向变流器向目标负载310提供补偿电流。若电流信息对应的电流值低于第一预设电流值，控制单元则控制DC/AC双向变流器处于待机状态或充电状态。其中，待机状态是指即DC/AC双向变流器即不向目标负载310提供补偿电流，也不接收配电变压器200提供的电能进行充电；充电状态是指DC/AC双向变流器接收配电变压器200提供的电能进行充电。Further, in this embodiment, the energy storage device 110 may adopt a power storage converter (Power Conversion System, PCS), and the power storage converter is composed of a DC/AC bidirectional converter (not shown in the figure), a control unit (in the figure not shown) etc. The control unit is used to receive the real-time collection of current information provided by one of the phases of the distribution transformer 200 to the target load 310 sent by the current collector 120, and compare the current value corresponding to the current information with the first preset current value, if the current The current value corresponding to the information is not lower than the first preset current value, and the control unit controls the DC/AC bidirectional converter to provide compensation current to the target load 310 . If the current value corresponding to the current information is lower than the first preset current value, the control unit controls the DC/AC bidirectional converter to be in a standby state or a charging state. Among them, the standby state means that the DC/AC bidirectional converter neither provides compensation current to the target load 310 nor receives the electric energy provided by the distribution transformer 200 for charging; the charging state means that the DC/AC bidirectional converter receives distribution The electric energy provided by the electric transformer 200 is used for charging.
进一步地，在本实施例中，电流采集器120可以采用开口电流采集互感器，也可以采用霍尔传感器。在本实施例中，优选于开口电流采集互感器。当电流采集器120采用开口电流采集互感器时，电流采集互感器是套设于每个支路130上的连接点140与目标负载310之间的线路上。Further, in this embodiment, the current collector 120 may use an open current collecting transformer, or may use a Hall sensor. In this embodiment, an open current collection transformer is preferred. When the current collector 120 adopts an open current collecting transformer, the current collecting transformer is sleeved on the line between the connection point 140 on each branch 130 and the target load 310 .
在本实施例中，为了能够在解决配电变压器200季节性过载时，也能解决配电变压器200三相电流不平衡的问题。下面，基于图4对本发明实施例提供的配电调节方法进行详细阐述，该配电调节方法应用于储能器110，该方法主要包括：In this embodiment, in order to solve the problem of unbalanced three-phase current of the distribution transformer 200 when the distribution transformer 200 is seasonally overloaded. Next, based on Fig. 4, the power distribution adjustment method provided by the embodiment of the present invention will be described in detail. The power distribution adjustment method is applied to the energy storage device 110, and the method mainly includes:
步骤S101，接收电流采集器发送的电流信息，并得到电流信息对应的电流值。Step S101, receiving the current information sent by the current collector, and obtaining the current value corresponding to the current information.
步骤S102，判断电流信息对应的电流值是否低于第一预设电流值。Step S102, judging whether the current value corresponding to the current information is lower than a first preset current value.
步骤S103，若电流信息对应的电流值不低于第一预设电流值，则向目标负载提供补偿电流。In step S103, if the current value corresponding to the current information is not lower than the first preset current value, then provide compensation current to the target load.
在本实施例中，该步骤S101至S103可与前述电流采集器120和储能器110的功能描述内容对应，故未提及部分，可以参考前述电流采集器120和储能器110的功能描述的相应内容。In this embodiment, the steps S101 to S103 may correspond to the functional descriptions of the current collector 120 and the energy storage device 110 described above, so the parts not mentioned can refer to the functional descriptions of the aforementioned current collector 120 and the energy storage device 110 corresponding content.
进一步地，请参照图5，在本实施例中，配电调节方法还包括以下步骤：Further, please refer to FIG. 5, in this embodiment, the power distribution adjustment method further includes the following steps:
步骤S104，若电流信息对应的电流值低于第一预设电流值，则处于待机状态或处于充电状态。Step S104, if the current value corresponding to the current information is lower than the first preset current value, it is in the standby state or in the charging state.
在本实施例中，该步骤S104可与前述储能器110的功能描述内容对应，故未提及部分，可以参考前述储能器110的功能描述的相应内容。In this embodiment, this step S104 may correspond to the content of the functional description of the aforementioned energy storage device 110 , so for the parts not mentioned, reference may be made to the corresponding content of the aforementioned functional description of the energy storage device 110 .
综上所述，本发明实施例提供了一种配电调节装置和配电调节方法，通过在配电变压器的每一相与目标负载形成的支路上均设置有一连接点，该连接点用于与多个储能器中的其中一个电连接，该连接点与目标负载之间的线路上设置多个电流采集器中的其中一个；电流采集器用于实时采集配电变压器的其中一相向目标负载提供的电流信息，并将电流信息传输至储能器；储能器用于将该电流信息对应的电流值与第一预设电流值进行比较，若电流信息对应的电流值不低于第一预设电流值，则向目标负载提供补偿电流。可见，在配电变压器的某一相向目标负载供电时，出现过载情况时，该相与目标负载形成的支路上电连接的储能器提供补偿电流，就能解决配电变压器季节性过载的问题。同时，由于配电变压器的每一相与目标负载供电的支路均分别对应电连接有储能器，每个支路电连接的储能器能够根据对应连接的支路的实际过载情况，对应提供不同的补偿电流，能够使得配电变压器三相电流处于平衡状态。通过一套配电调节装置既能解决配电变压器的季节性过载问题，还能解决配电变压器的三相电流不平衡的问题，不仅成本低，还提高了供电可靠性，延长了配电变压器的使用寿命。To sum up, the embodiments of the present invention provide a power distribution regulation device and a power distribution regulation method, by setting a connection point on the branch formed by each phase of the distribution transformer and the target load, and the connection point is used for It is electrically connected to one of the multiple energy storage devices, and one of the multiple current collectors is set on the line between the connection point and the target load; the current collector is used to collect one of the phase-facing target loads of the distribution transformer in real time provided current information, and transmit the current information to the accumulator; the accumulator is used to compare the current value corresponding to the current information with the first preset current value, if the current value corresponding to the current information is not lower than the first preset current value Set the current value to provide compensation current to the target load. It can be seen that when a certain phase of the distribution transformer supplies power to the target load, when an overload occurs, the energy storage connected to the branch formed by the phase and the target load provides compensation current, which can solve the problem of seasonal overload of the distribution transformer . At the same time, since each phase of the distribution transformer is electrically connected to the branch circuit supplied by the target load with an energy storage device, the energy storage device connected to each branch circuit can Providing different compensation currents can make the three-phase current of the distribution transformer in a balanced state. A set of power distribution regulating device can not only solve the seasonal overload problem of distribution transformers, but also solve the problem of unbalanced three-phase current of distribution transformers. service life.
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
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