CN111049197A - Low-voltage distribution network energy storage device configuration method, device and equipment - Google Patents
Low-voltage distribution network energy storage device configuration method, device and equipment Download PDFInfo
- Publication number
- CN111049197A CN111049197A CN201911158936.6A CN201911158936A CN111049197A CN 111049197 A CN111049197 A CN 111049197A CN 201911158936 A CN201911158936 A CN 201911158936A CN 111049197 A CN111049197 A CN 111049197A
- Authority
- CN
- China
- Prior art keywords
- preset
- energy storage
- voltage
- node
- storage device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application discloses a method, a device and equipment for configuring energy storage devices of a low-voltage distribution network, which are characterized in that a low-voltage distribution network simulation model is established based on practical application scenes, and the configuration of the energy storage devices of the low-voltage distribution network simulation model is analyzed under the condition of preset voltage constraint, so that the installation position and the installation capacity of the energy storage devices in the low-voltage distribution network simulation model are reasonably determined, a set of systematic and scientific low-voltage distribution network energy storage device configuration process is established, the configuration of the energy storage devices of the low-voltage distribution network is effectively and reliably realized, the configuration experience of engineering technicians with rich experience is not required, the defect that the configuration reliability is reduced due to errors caused by human factors is avoided, the selection mode of the installation capacity and the installation position of the energy storage devices of the low-voltage distribution network in the prior art is solved, the selection mode, the reliability is lower.
Description
Technical Field
The application relates to the technical field of low-voltage distribution networks, in particular to a method, a device and equipment for configuring an energy storage device of a low-voltage distribution network.
Background
With the development of power science and technology, the requirement of power consumers on voltage quality is higher and higher, and the problem of low voltage brings much inconvenience to the power consumers, so that the problem of low voltage is needed to be solved by a power provider.
The method for solving the low-voltage problem by using a newly-built distribution area is a common solution at present, but although shortening the power supply radius by newly-built lifting and improving the level of a basic grid frame are fundamental means for solving the low-voltage problem, the existing selection mode of the installation capacity and the installation position of the energy storage device of the low-voltage distribution network is realized by installing the energy storage device with reasonable capacity at the reasonable node position of the low-voltage distribution network through manual experience screening by engineering technicians with rich experience, the selection error caused by human factors exists, and the reliability is low.
Disclosure of Invention
The application provides a method, a device and equipment for configuring an energy storage device of a low-voltage distribution network, which are used for solving the technical problems that the existing selection mode of the installation capacity and the installation position of the energy storage device of the low-voltage distribution network depends on the experience level of engineering technicians, selection errors caused by artificial factors exist, and the reliability is low.
In view of this, a first aspect of the present application provides a method for configuring an energy storage device of a low-voltage distribution network, including:
constructing a low-voltage distribution network simulation model;
acquiring the voltage of each node of the low-voltage distribution network simulation model under a preset rated load;
if the node which does not meet the preset voltage constraint condition exists, installing an energy storage device with preset active power at any node of all nodes which do not meet the preset voltage constraint condition;
traversing all nodes which do not meet the preset voltage constraint condition, and determining the energy storage device installation node which enables the voltage of each node of the voltage distribution network simulation model under the preset rated load to meet the preset voltage constraint condition and has the maximum node voltage lifting amplitude as the energy storage device configuration node of the low-voltage distribution network simulation model;
controlling the configuration nodes of the energy storage device to output preset reactive power, and acquiring the minimum reactive power output by the configuration nodes of the energy storage device when the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets the preset voltage constraint condition;
and calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the energy storage device configuration node.
Optionally, if there is a node that does not satisfy the preset voltage constraint condition, installing an energy storage device with preset active power at any node of all nodes that do not satisfy the preset voltage constraint condition, specifically including:
if the node which does not meet the preset voltage constraint condition exists, calculating the minimum active power capacity of the voltage distribution network simulation model at each node voltage under the preset rated load meeting the preset voltage constraint condition based on an exploratory method at any node of all the nodes which do not meet the preset voltage constraint condition, taking the minimum active power capacity as the preset active power, and installing an energy storage device of the preset active power at any node.
Optionally, the controlling the energy storage device configuration node to output preset reactive power, and obtaining that the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets the preset voltage constraint condition, where when the output active power is minimum, the minimum reactive power output by the energy storage device configuration node specifically includes:
controlling the energy storage device configuration node to output preset reactive power, and adjusting the preset reactive power output by the energy storage device configuration node based on an exploratory method;
and acquiring the minimum reactive power output by the configuration node of the energy storage device when the output active power is the minimum under the condition that the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
Optionally, the preset rated load is 30% or 100%.
Optionally, the preset voltage constraint condition is that the node voltage of the press-fit network simulation model is greater than or equal to 0.93 pu.
The application second aspect provides a net energy memory configuration device is joined in marriage to low pressure includes:
the modeling module is used for constructing a low-voltage distribution network simulation model;
the acquisition module is used for acquiring the voltage of each node of the low-voltage distribution network simulation model under a preset rated load;
the active power constraint module is used for installing an energy storage device with preset active power at any node of all nodes which do not meet the preset voltage constraint condition if the nodes which do not meet the preset voltage constraint condition exist;
the traversing module is used for traversing all nodes which do not meet the preset voltage constraint condition, so that the voltage of each node of the voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition, and the energy storage device installation node with the maximum node voltage lifting amplitude is determined as the energy storage device configuration node of the low-voltage distribution network simulation model;
the reactive power constraint module is used for controlling the energy storage device configuration node to output preset reactive power, acquiring that the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets the preset voltage constraint condition, and outputting the minimum reactive power output by the energy storage device configuration node when the output active power is minimum;
and the superposition module is used for calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the energy storage device configuration node.
Optionally, the active constraint module is specifically configured to:
if the node which does not meet the preset voltage constraint condition exists, calculating the minimum active power capacity of the voltage distribution network simulation model at each node voltage under the preset rated load meeting the preset voltage constraint condition based on an exploratory method at any node of all the nodes which do not meet the preset voltage constraint condition, taking the minimum active power capacity as the preset active power, and installing an energy storage device of the preset active power at any node.
Optionally, the reactive power constraint module is specifically configured to:
controlling the energy storage device configuration node to output preset reactive power, and adjusting the preset reactive power output by the energy storage device configuration node based on an exploratory method;
and acquiring the minimum reactive power output by the configuration node of the energy storage device when the output active power is the minimum under the condition that the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
A third aspect of the present application provides a low-voltage distribution network energy storage device configuration apparatus, including a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute any one of the low-voltage distribution network energy storage device configuration methods of the first aspect according to instructions in the program code.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing any one of the methods for configuring a low-voltage distribution network energy storage device of the first aspect.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a method for configuring an energy storage device of a low-voltage distribution network, which comprises the following steps: constructing a low-voltage distribution network simulation model; acquiring the voltage of each node of a low-voltage distribution network simulation model under a preset rated load; if the node which does not meet the preset voltage constraint condition exists, installing an energy storage device with preset active power at any node of all nodes which do not meet the preset voltage constraint condition; traversing all nodes which do not meet the preset voltage constraint condition, and determining the energy storage device installation node which enables the voltage of each node of the pressure distribution network simulation model under the preset rated load to meet the preset voltage constraint condition and has the maximum node voltage lifting amplitude as the energy storage device configuration node of the low-voltage distribution network simulation model; controlling configuration nodes of the energy storage device to output preset reactive power, and acquiring the minimum reactive power output by the configuration nodes of the energy storage device when the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets a preset voltage constraint condition; and calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the configuration node of the energy storage device.
The method for configuring the energy storage device of the low-voltage distribution network is characterized in that a low-voltage distribution network simulation model is established based on practical application scenes, the method comprises the steps of analyzing the configuration of the energy storage device of the low-voltage distribution network simulation model under the preset voltage constraint condition, reasonably determining the installation position and the installation capacity of the energy storage device in the low-voltage distribution network simulation model, establishing a set of systematic and scientific low-voltage distribution network energy storage device configuration process, effectively and reliably realizing the configuration of the energy storage device of the low-voltage distribution network, avoiding the defect of low configuration reliability caused by errors caused by human factors due to the fact that configuration experience of engineering technicians is not needed, and solving the technical problems that the existing selection mode of the installation capacity and the installation position of the low-voltage distribution network energy storage device depends on the experience level of the engineering technicians, selection errors caused by human factors exist, and the reliability is low.
Drawings
Fig. 1 is a schematic flow chart of a method for configuring an energy storage device of a low-voltage distribution network according to an embodiment of the present application;
fig. 2 is another schematic flow chart of a method for configuring an energy storage device of a low-voltage distribution network according to an embodiment of the present application;
fig. 3 is a schematic diagram of an overall installation structure of a distributed energy storage system provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a low-voltage distribution network simulation model provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a configuration device of an energy storage device of a low-voltage distribution network provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For easy understanding, please refer to fig. 1, an embodiment of a method for configuring an energy storage device of a low-voltage distribution network according to the present application includes:
It should be noted that, an overall structural schematic diagram of solving the low voltage problem by using the energy storage system is shown in fig. 3, under the condition that the voltage of the first node is constant and the line impedance is constant, the voltage loss is composed of two parts, namely, the voltage loss caused by active power transmission and the voltage loss caused by reactive power transmission, and the low voltage problem is solved by using the energy storage device. The energy storage device is charged when the load is underestimated, and the energy storage device is discharged when the load is in a peak along with the condition that the voltage of the tail end node of the power grid is low (the value is lower than a voltage threshold), so that the voltage of the tail end line is restored to a normal range.
In the embodiment of the application, a low-voltage distribution network simulation model corresponding to an actual low-voltage distribution network circuit result is firstly established according to an actual application scene, the low-voltage distribution network simulation model can be as shown in fig. 4, a low-voltage line of the low-voltage distribution network simulation model in fig. 4 adopts BLV-120, the length is 1km, the load is uniformly distributed, the rated load capacity of each section is 20kVA, the power factor is 0.9, and the type of a transformer T1 is S13-200.
And 102, acquiring the voltage of each node of the low-voltage distribution network simulation model under a preset rated load.
It should be noted that after the low-voltage distribution network simulation model is established, the voltage condition under the preset rated load of the distribution room is calculated, the preset rated load may be a 30% rated load, may also be a 100% rated load, and may also be a rated load of other sizes, specifically, the preset rated load may be selected and determined according to the actual application condition, and the preset rated load is determined to be 30% or 100% as an empirical value based on the test process and result of the present application, and has a better configuration effect compared with other values.
And 103, if the nodes which do not meet the preset voltage constraint condition exist, installing an energy storage device with preset active power at any node of all the nodes which do not meet the preset voltage constraint condition.
It should be noted that energy storage configuration is a multi-objective optimization problem, and the solution to the capacity configuration problem needs to be performed under a voltage constraint condition, so in this embodiment of the present application, a preset voltage constraint condition needs to be set, where the preset voltage constraint condition may be that the voltage of each node of the voltage-distribution network simulation model cannot be lower than 0.93pu, in practical application, 0.9pu is a qualified voltage lower limit, and the preset voltage constraint condition is set to be not lower than 0.93pu and is a target threshold selected by leaving a margin of 0.03pu, so that the configuration result of the energy storage device can be more reliable.
If the node which does not meet the preset voltage constraint condition exists in the distribution room under the preset rated load, one node can be selected at will from all the nodes which do not meet the preset voltage constraint condition, and the energy storage device with preset active power is installed. The preset active power may be the active power of the smallest energy storage device installation that meets the preset voltage constraint determined by an exploratory method.
And 104, traversing all nodes which do not meet the preset voltage constraint condition, and determining the energy storage device installation node which enables the voltage of each node of the pressure distribution network simulation model under the preset rated load to meet the preset voltage constraint condition and has the largest node voltage lifting amplitude as the energy storage device configuration node of the low-voltage distribution network simulation model.
It should be noted that, under the preset rated load, there may be more than one node in the distribution room which does not satisfy the preset voltage constraint condition, and therefore, all the nodes which do not satisfy the preset voltage constraint condition need to be traversed, and a most reasonable node is determined to install the energy storage device, where the most reasonable node may be an energy storage device installation node which makes the voltages of all the nodes of the press-fit network simulation model under the preset rated load satisfy the preset voltage constraint condition and has the largest node voltage boosting amplitude.
And 105, controlling the configuration nodes of the energy storage device to output preset reactive power, and acquiring the minimum reactive power output by the configuration nodes of the energy storage device when the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
It should be noted that the energy storage device shown in fig. 3 includes an energy storage converter (PCS, power conversion System), and in consideration of that the PCS can send out reactive power, the PCS outputs reactive power of a preset magnitude, and calculates the energy storage capacity required to be configured by the low-voltage distribution network simulation model, and in the case that the PCS outputs reactive power, the active capacity required to be configured gradually decreases as the reactive power of the PCS increases, so that on the premise that the preset voltage constraint condition is satisfied, the energy storage device configuration node can make the reactive power with the minimum energy storage active capacity.
And 106, calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the configuration node of the energy storage device.
It should be noted that the total power capacity of the energy storage device is the sum of the preset active power and the minimum reactive power, i.e. SEnergy storage device＝PPCS+jQPCS(ii) a Wherein, PPCSFor storing active power of energy storage devices, QPCSAnd the energy storage reactive power of the energy storage device is obtained.
The configuration method of the energy storage device of the low-voltage distribution network provided by the embodiment of the application establishes a simulation model of the low-voltage distribution network based on an actual application scene, the method comprises the steps of analyzing the configuration of the energy storage device of the low-voltage distribution network simulation model under the preset voltage constraint condition, reasonably determining the installation position and the installation capacity of the energy storage device in the low-voltage distribution network simulation model, establishing a set of systematic and scientific low-voltage distribution network energy storage device configuration process, effectively and reliably realizing the configuration of the energy storage device of the low-voltage distribution network, avoiding the defect of low configuration reliability caused by errors caused by human factors due to the fact that configuration experience of engineering technicians is not needed, and solving the technical problems that the existing selection mode of the installation capacity and the installation position of the low-voltage distribution network energy storage device depends on the experience level of the engineering technicians, selection errors caused by human factors exist, and the reliability is low.
For convenience of understanding, referring to fig. 2 to 4, another embodiment of a method for configuring an energy storage device of a low-voltage distribution network is provided in an embodiment of the present application, including:
And 203, if the nodes which do not meet the preset voltage constraint condition exist, calculating the minimum active power capacity of each node voltage of the press-fit network simulation model under the preset rated load meeting the preset voltage constraint condition at any node of all the nodes which do not meet the preset voltage constraint condition based on an exploratory method, taking the minimum active power capacity as the preset active power, and installing an energy storage device with the preset active power at any node.
And 204, traversing all nodes which do not meet the preset voltage constraint condition, so that the voltage of each node of the pressure distribution network simulation model under the preset rated load meets the preset voltage constraint condition, and determining the energy storage device installation node with the maximum node voltage lifting amplitude as an energy storage device configuration node of the low-voltage distribution network simulation model.
And 205, controlling the configuration node of the energy storage device to output preset reactive power, and adjusting the preset reactive power output by the configuration node of the energy storage device based on an exploratory method.
And step 206, acquiring the minimum reactive power output by the configuration node of the energy storage device when the output active power is the minimum under the condition that the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
And step 207, calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the energy storage device configuration node.
In order to describe the configuration method of the low-voltage distribution network energy storage device in the embodiment of the present application more specifically, a specific application example of the configuration method of the low-voltage distribution network energy storage device is provided below for description.
As shown in fig. 4, the low-voltage line of the low-voltage distribution network simulation model used in the present application example is BLV-120, the length is 1km, the loads are uniformly distributed, the rated load capacity of each segment is 20kVA, the power factor is 0.9, and the type of the transformer T1 is S13-200.
First, the voltage at the rated load of 30% and 100% in the distribution area was calculated, and the calculation results are shown in table 1.
TABLE 1 Low-voltage distribution network simulation model Voltage situation (pu) before installation of energy storage device
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| 100% rated load | 1.01 | 0.967 | 0.930 | 0.900 | 0.879 | 0.865 | 0.858 |
| 30% rated load | 1.022 | 1.007 | 0.995 | 0.985 | 0.978 | 0.973 | 0.971 |
It can be seen from table 1 that at 100% rated load, the voltages at nodes 4, 5, 6, and 7 are all equal to or lower than 0.9pu, and at 30% rated load, the voltages at each node pass, with a minimum voltage of 0.971 pu.
And installing energy storage at a node 5 in the middle position of the line, wherein the power is 50% of the total active power of the rated load and is 54kW, and calculating the voltage condition of each node again, wherein the calculation result is shown in Table 2.
TABLE 2 node Voltage conditions (pu) after installation of energy storage device at node 5
As can be seen from Table 2, the voltages at the nodes are all acceptable, the minimum voltage is 0.930pu, and the voltage boosting amplitude is about 0.072 pu.
Assuming that the predetermined voltage value is reached, the minimum active power value required for the energy storage device at a certain installation point can be calculated. Still taking the model in fig. 4 as an example, energy storage is configured at four nodes 4, 5, 6, and 7, respectively, and the calculation results are shown in table 3.
TABLE 3 influence of different mounting positions on the energy storage capacity of the energy storage device
| Energy storage (kW) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| Node 4 | 80 | 1.015 | 0.994 | 0.981 | 0.977 | 0.954 | 0.938 | 0.93 |
| |
54 | 1.014 | 0.986 | 0.965 | 0.963 | 0.948 | 0.935 | 0.93 |
| Node 6 | 45 | 1.014 | 0.982 | 0.959 | 0.944 | 0.936 | 0.937 | 0.93 |
| |
41 | 1.013 | 0.981 | 0.956 | 0.94 | 0.931 | 0.93 | 0.937 |
It can be seen from table 3 that when the energy storage is installed at the end, the voltage of each node can reach the predetermined value only by configuring the capacity of 41kW, and thus it can be determined that the installation point is the 7 th node, and the active power capacity of the energy storage is 41 kW.
Considering that the PCS contained in the energy storage device can generate reactive power, energy storage is configured at the node 7, and simultaneously the PCS respectively outputs reactive power of 5, 10, 15 and 20kVar, and the energy storage capacity required to be configured is calculated, as shown in table 4.
TABLE 4 PCS output reactive power impact on active capacity
As can be seen from table 4, in the case where the PCS outputs reactive power, the active capacity that needs to be configured gradually decreases as the PCS reactive power increases. On the premise of meeting the minimum limit value of the node voltage, taking 20kVar as an example, the reactive power output is 40% of the total rated reactive power demand, and the energy storage active capacity can be reduced by nearly 44% compared with the energy storage active capacity when the PCS does not output reactive power.
Therefore, when the energy storage capacity of the energy storage device is actually calculated, the energy storage active power P obtained according to the method of the applicationPCSAnd energy storage reactive power QPCSAnd then, according to the limit conditions of active power and reactive power required by the actual application site, a combination mode of matching the active power and the reactive power of the energy storage device can be flexibly designed. Finally, the total power capacity of the energy storage device can be calculated: sEnergy storage device＝PPCS+jQPCS。
For ease of understanding, referring to fig. 5, an embodiment of a low-voltage distribution network energy storage device configuration apparatus is provided, including:
and the modeling module is used for constructing a low-voltage distribution network simulation model.
And the acquisition module is used for acquiring the voltage of each node of the low-voltage distribution network simulation model under the preset rated load.
And the active power constraint module is used for installing an energy storage device with preset active power at any node of all nodes which do not meet the preset voltage constraint condition if the nodes which do not meet the preset voltage constraint condition exist.
And the traversal module is used for traversing all nodes which do not meet the preset voltage constraint condition, so that the voltage of each node of the pressure distribution network simulation model under the preset rated load meets the preset voltage constraint condition, and the energy storage device installation node with the maximum node voltage lifting amplitude is determined as the energy storage device configuration node of the low-voltage distribution network simulation model.
And the reactive power constraint module is used for controlling the configuration node of the energy storage device to output preset reactive power, acquiring that the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets a preset voltage constraint condition, and outputting the minimum reactive power output by the configuration node of the energy storage device when the output active power is minimum.
And the superposition module is used for calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the configuration node of the energy storage device.
Further, the active power constraint module is specifically configured to:
if the node which does not meet the preset voltage constraint condition exists, the minimum active power capacity of the voltage of each node of the press-fit network simulation model under the preset rated load meeting the preset voltage constraint condition is calculated at any node of all the nodes which do not meet the preset voltage constraint condition based on an exploratory method, the minimum active power capacity is used as the preset active power, and an energy storage device of the preset active power is installed at any node.
Further, the reactive power constraint module is specifically configured to:
controlling the configuration node of the energy storage device to output preset reactive power, and adjusting the preset reactive power output by the configuration node of the energy storage device based on an exploratory method;
and acquiring the minimum reactive power output by the configuration node of the energy storage device when the output active power is minimum under the condition that the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
The application also provides an embodiment of a low-voltage distribution network energy storage device configuration device, which comprises a processor and a memory:
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is configured to execute any one of the aforementioned low-voltage distribution network energy storage device configuration method embodiments according to instructions in the program code.
Embodiments of a computer-readable storage medium for storing program code for performing any of the aforementioned embodiments of a method for configuring an energy storage device for a low-voltage distribution network are also provided.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A method for configuring an energy storage device of a low-voltage distribution network is characterized by comprising the following steps:
constructing a low-voltage distribution network simulation model;
acquiring the voltage of each node of the low-voltage distribution network simulation model under a preset rated load;
if the node which does not meet the preset voltage constraint condition exists, installing an energy storage device with preset active power at any node of all nodes which do not meet the preset voltage constraint condition;
traversing all nodes which do not meet the preset voltage constraint condition, and determining the energy storage device installation node which enables the voltage of each node of the voltage distribution network simulation model under the preset rated load to meet the preset voltage constraint condition and has the maximum node voltage lifting amplitude as the energy storage device configuration node of the low-voltage distribution network simulation model;
controlling the configuration nodes of the energy storage device to output preset reactive power, and acquiring the minimum reactive power output by the configuration nodes of the energy storage device when the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets the preset voltage constraint condition;
and calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the energy storage device configuration node.
2. The method according to claim 1, wherein if there is a node that does not satisfy the preset voltage constraint condition, an energy storage device with preset active power is installed at any node of all nodes that do not satisfy the preset voltage constraint condition, and specifically includes:
if the node which does not meet the preset voltage constraint condition exists, calculating the minimum active power capacity of the voltage distribution network simulation model at each node voltage under the preset rated load meeting the preset voltage constraint condition based on an exploratory method at any node of all the nodes which do not meet the preset voltage constraint condition, taking the minimum active power capacity as the preset active power, and installing an energy storage device of the preset active power at any node.
3. The method according to claim 1, wherein the controlling the energy storage device configuration nodes to output preset reactive power obtains that the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets the preset voltage constraint condition, and when the output active power is minimum, the minimum reactive power output by the energy storage device configuration nodes specifically includes:
controlling the energy storage device configuration node to output preset reactive power, and adjusting the preset reactive power output by the energy storage device configuration node based on an exploratory method;
and acquiring the minimum reactive power output by the configuration node of the energy storage device when the output active power is the minimum under the condition that the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
4. The method of claim 1, wherein the preset rated load is 30% or 100%.
5. The method of claim 1, wherein the preset voltage constraint condition is that a node voltage of the press-fit network simulation model is greater than or equal to 0.93 pu.
6. A low voltage distribution network energy storage device configuration device, comprising:
the modeling module is used for constructing a low-voltage distribution network simulation model;
the acquisition module is used for acquiring the voltage of each node of the low-voltage distribution network simulation model under a preset rated load;
the active power constraint module is used for installing an energy storage device with preset active power at any node of all nodes which do not meet the preset voltage constraint condition if the nodes which do not meet the preset voltage constraint condition exist;
the traversing module is used for traversing all nodes which do not meet the preset voltage constraint condition, so that the voltage of each node of the voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition, and the energy storage device installation node with the maximum node voltage lifting amplitude is determined as the energy storage device configuration node of the low-voltage distribution network simulation model;
the reactive power constraint module is used for controlling the energy storage device configuration node to output preset reactive power, acquiring that the voltage of each node of the low-voltage distribution network simulation model under a preset rated load meets the preset voltage constraint condition, and outputting the minimum reactive power output by the energy storage device configuration node when the output active power is minimum;
and the superposition module is used for calculating the sum of the preset active power and the minimum reactive power to obtain the energy storage capacity of the energy storage device configuration node.
7. The low-voltage distribution network energy storage device configuration device according to claim 6, wherein the active constraint module is specifically configured to:
if the node which does not meet the preset voltage constraint condition exists, calculating the minimum active power capacity of the voltage distribution network simulation model at each node voltage under the preset rated load meeting the preset voltage constraint condition based on an exploratory method at any node of all the nodes which do not meet the preset voltage constraint condition, taking the minimum active power capacity as the preset active power, and installing an energy storage device of the preset active power at any node.
8. The low-voltage distribution network energy storage device configuration device of claim 6, wherein the reactive power constraint module is specifically configured to:
controlling the energy storage device configuration node to output preset reactive power, and adjusting the preset reactive power output by the energy storage device configuration node based on an exploratory method;
and acquiring the minimum reactive power output by the configuration node of the energy storage device when the output active power is the minimum under the condition that the voltage of each node of the low-voltage distribution network simulation model under the preset rated load meets the preset voltage constraint condition.
9. A low-voltage distribution network energy storage device configuration device, the device comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the method for configuring a low-voltage distribution network energy storage device according to any one of claims 1 to 5 according to instructions in the program code.
10. A computer readable storage medium for storing program code for performing the low voltage distribution network energy storage device configuration method of any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911158936.6A CN111049197B (en) | 2019-11-22 | 2019-11-22 | Low-voltage distribution network energy storage device configuration method, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911158936.6A CN111049197B (en) | 2019-11-22 | 2019-11-22 | Low-voltage distribution network energy storage device configuration method, device and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111049197A true CN111049197A (en) | 2020-04-21 |
| CN111049197B CN111049197B (en) | 2021-09-24 |
Family
ID=70233129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911158936.6A Active CN111049197B (en) | 2019-11-22 | 2019-11-22 | Low-voltage distribution network energy storage device configuration method, device and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111049197B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069638A (en) * | 2020-09-08 | 2020-12-11 | 广东电网有限责任公司电力科学研究院 | Low-voltage distribution network energy storage equipment access point location method and related device |
| CN113517699A (en) * | 2021-07-28 | 2021-10-19 | 盾石磁能科技有限责任公司 | Voltage supporting method and device for long and large interval of traction network and terminal equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011182516A (en) * | 2010-02-26 | 2011-09-15 | Tamotsu Minagawa | Electric power supply and demand leveling system |
| CN103475013A (en) * | 2013-09-27 | 2013-12-25 | 清华大学 | Method and system for comprehensively optimizing energy storing power station planning and operating |
| CN104361405A (en) * | 2014-10-28 | 2015-02-18 | 广东电网有限责任公司电力科学研究院 | Micro grid energy storage device design method based on capacity limit value constrain |
| CN104810861A (en) * | 2015-04-23 | 2015-07-29 | 广西电网有限责任公司电力科学研究院 | Optimal locating and constant volume method for distributed power supply in low-voltage distribution network |
| CN105069704A (en) * | 2015-08-14 | 2015-11-18 | 中国电力科学研究院 | Quick traversing power distribution network reconstruction method for improving distributed power supply permeability |
| CN105976055A (en) * | 2016-05-04 | 2016-09-28 | 东北电力大学 | Distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss |
| CN106130007A (en) * | 2016-06-27 | 2016-11-16 | 华北电力大学 | A kind of active distribution network energy storage planing method theoretical based on vulnerability |
| US9536198B2 (en) * | 2013-11-22 | 2017-01-03 | International Business Machines Corporation | Non-technical loss detection and localization |
| JP2017518725A (en) * | 2014-06-20 | 2017-07-06 | ゼネラル・エレクトリック・カンパニイ | Power control system and method for energy storage and charging station |
| CN107834585A (en) * | 2017-12-11 | 2018-03-23 | 中国船舶重工集团公司第七〇九研究所 | A kind of energy storage PCS in parallel power distribution method |
| CN110212558A (en) * | 2019-05-09 | 2019-09-06 | 宁波永耀电力投资集团有限公司 | A kind of addressing constant volume configuration method of distributed energy storage system |
| CN110311397A (en) * | 2019-07-26 | 2019-10-08 | 国网湖南省电力有限公司 | The more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation |
| CN110930031A (en) * | 2019-11-22 | 2020-03-27 | 广东电网有限责任公司 | Method, device and equipment for site selection of installation platform area of low-voltage distribution network energy storage device |
-
2019
- 2019-11-22 CN CN201911158936.6A patent/CN111049197B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011182516A (en) * | 2010-02-26 | 2011-09-15 | Tamotsu Minagawa | Electric power supply and demand leveling system |
| CN103475013A (en) * | 2013-09-27 | 2013-12-25 | 清华大学 | Method and system for comprehensively optimizing energy storing power station planning and operating |
| US9536198B2 (en) * | 2013-11-22 | 2017-01-03 | International Business Machines Corporation | Non-technical loss detection and localization |
| JP2017518725A (en) * | 2014-06-20 | 2017-07-06 | ゼネラル・エレクトリック・カンパニイ | Power control system and method for energy storage and charging station |
| CN104361405A (en) * | 2014-10-28 | 2015-02-18 | 广东电网有限责任公司电力科学研究院 | Micro grid energy storage device design method based on capacity limit value constrain |
| CN104810861A (en) * | 2015-04-23 | 2015-07-29 | 广西电网有限责任公司电力科学研究院 | Optimal locating and constant volume method for distributed power supply in low-voltage distribution network |
| CN105069704A (en) * | 2015-08-14 | 2015-11-18 | 中国电力科学研究院 | Quick traversing power distribution network reconstruction method for improving distributed power supply permeability |
| CN105976055A (en) * | 2016-05-04 | 2016-09-28 | 东北电力大学 | Distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss |
| CN106130007A (en) * | 2016-06-27 | 2016-11-16 | 华北电力大学 | A kind of active distribution network energy storage planing method theoretical based on vulnerability |
| CN107834585A (en) * | 2017-12-11 | 2018-03-23 | 中国船舶重工集团公司第七〇九研究所 | A kind of energy storage PCS in parallel power distribution method |
| CN110212558A (en) * | 2019-05-09 | 2019-09-06 | 宁波永耀电力投资集团有限公司 | A kind of addressing constant volume configuration method of distributed energy storage system |
| CN110311397A (en) * | 2019-07-26 | 2019-10-08 | 国网湖南省电力有限公司 | The more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation |
| CN110930031A (en) * | 2019-11-22 | 2020-03-27 | 广东电网有限责任公司 | Method, device and equipment for site selection of installation platform area of low-voltage distribution network energy storage device |
Non-Patent Citations (3)
| Title |
|---|
| GIANNI CELLI: "Assessment of Energy Storage Systems Installation in Smart Distribution Networks", 《2018 AEIT INTERNATIONAL ANNUAL CONFERENCE》 * |
| 刘波: "主动配电网储能优化规划", 《仪器仪表学报》 * |
| 陈徽: "配电网中分布式储能***的优化配置", 《四川理工学院学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069638A (en) * | 2020-09-08 | 2020-12-11 | 广东电网有限责任公司电力科学研究院 | Low-voltage distribution network energy storage equipment access point location method and related device |
| CN113517699A (en) * | 2021-07-28 | 2021-10-19 | 盾石磁能科技有限责任公司 | Voltage supporting method and device for long and large interval of traction network and terminal equipment |
| CN113517699B (en) * | 2021-07-28 | 2022-05-10 | 盾石磁能科技有限责任公司 | Voltage supporting method and device for long and large interval of traction network and terminal equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111049197B (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11152786B2 (en) | Dispatch method and device for power system | |
| CN111049197B (en) | Low-voltage distribution network energy storage device configuration method, device and equipment | |
| US20160063153A1 (en) | Simulation method and apparatus for wind farm common coupling region | |
| CN107862103B (en) | Simulation model generation method and system based on ADPSS | |
| CN112398151B (en) | Offshore wind power energy storage configuration method and device, electronic equipment and storage medium | |
| Xu et al. | State estimation of systems with UPFCs using the interior point method | |
| CN104731636A (en) | Dispatcher Training Simulating Device And Operation Method Thereof | |
| CN110930031B (en) | Method, device and equipment for site selection of installation platform area of low-voltage distribution network energy storage device | |
| CN110414796B (en) | AC/DC hybrid power distribution network frame planning method and device and storage medium | |
| CN115912493A (en) | Distributed power supply access method, electronic equipment, power distribution network and storage medium | |
| CN112186764A (en) | Access optimization method and device for power distribution network equipment and electronic equipment | |
| CN116488267A (en) | Modeling-based wind farm reactive capacity limit simulation calculation method and device | |
| US20120221270A1 (en) | Capacitance Placement in wind farms | |
| Parihar et al. | Power flow analysis of balanced radial distribution system with composite load model | |
| CN114123236A (en) | Frequency response control method and device for power electronic equipment | |
| CN110350507B (en) | Method and device for determining equivalent capacitance of direct-current microgrid and computer-readable storage medium | |
| CN110148065B (en) | Short-circuit current calculation processing method and system considering flexible and direct influence | |
| CN110797906B (en) | Method and device for determining maximum installed capacity of wind power base and storage medium | |
| CN111080024A (en) | Method for optimal configuration of voltage sag treatment equipment | |
| CN111384720B (en) | Test sequence optimization method and device for multi-terminal direct current transmission system | |
| CN115133535A (en) | Energy configuration method and device | |
| CN107908877B (en) | Method and device for establishing mathematical model of distributed power supply planning | |
| CN116976117A (en) | Reliability optimization method, device and equipment for power distribution network topology and storage medium | |
| CN116681471A (en) | Direct current line address selection method and related device of alternating current-direct current system | |
| CN117171502B (en) | Method for calculating DC fault overvoltage peak value of multi-DC external power supply system by bundling wind and fire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |