Dynamic stepless real-time management device and method for power quality in distribution network area

Abstract

The present invention relates to a dynamic stepless real-time management method for power quality in a distribution network substation, and relates to the technical field of power quality management, which includes: a series transformer unit connected between a power grid and a local load for voltage adjustment; a series inverter unit connected between a control interface of the series transformer unit and the power grid, for isolating voltage disturbances on the power grid side; a parallel inverter unit connected between the series inverter unit and the power grid, and for harmonic compensation of load-side current. The present invention has the effect of improving the power quality of a distribution network substation.

Description

Technical Field

[0001] The present invention relates to the technical field of power quality management, and in particular to a dynamic stepless real-time management device and method for power quality in a distribution network area. Background Art

[0002] Power quality refers to the physical property of a power supply device that does not interrupt or interfere with the user's use of electricity under normal working conditions. Power quality is crucial to ensuring the stable operation of the power system and the normal operation of electrical equipment, so power quality needs to be managed.

[0003] A distribution network area refers to a local area where high-voltage electricity is converted into low-voltage electricity suitable for home and industrial use, thereby distributing electricity to end users. Power quality is crucial to distribution network areas because it is directly related to the stable operation of the power system and the power consumption experience of power users.

[0004] With the large-scale access of new energy sources such as distributed generation and charging piles to the power grid, the access of a large number of power electronic equipment loads, and the diversity, randomness and volatility of user loads, the power quality of the distribution network substation will be affected, resulting in a decrease in the power quality of the distribution network substation, and then reducing the user experience. Summary of the invention

[0005] In order to improve the power quality of the distribution network substation, the present invention provides a dynamic stepless real-time management device and method for the power quality of the distribution network substation.

[0006] In the first aspect, the present invention provides a dynamic stepless real-time management device for power quality in a distribution network area, which adopts the following technical solution:

[0007] A dynamic stepless real-time management device for power quality in a distribution network area, comprising:

[0008] A series transformer unit connected between the power grid and the local load for voltage adjustment;

[0009] A series inverter unit, connected between the control interface of the series transformer unit and the power grid, and used to isolate voltage disturbances on the power grid side;

[0010] The parallel inverter unit is connected between the series inverter unit and the power grid and is used to perform harmonic compensation on the load side current.

[0011] Optionally, a bypass unit for controlling opening and closing is connected between the control interface of the series inverter unit and the series transformer unit.

[0012] Optionally, the bypass unit includes an on-off module and a contactless switch module for controlling on-off, and the on-off module and the contactless switch module are connected in parallel between the control interface of the series inverter unit and the series transformer unit.

[0013] Optionally, the bypass unit is connected to a communication unit for communicating with the outside world, and the communication unit is used to control the opening and closing of the bypass unit.

[0014] Optionally, a voltage regulating unit for voltage regulation is further connected between the series inverter unit and the parallel inverter unit.

[0015] Optionally, a parallel transformer unit is connected between the parallel inverter unit and the power grid, and an energy storage unit for storing or releasing energy is also connected between the series inverter unit and the parallel inverter unit.

[0016] In a second aspect, the present invention provides a method for managing the power quality of a distribution network area using a dynamic stepless real-time management device, which adopts the following technical solution:

[0017] A method for managing the power quality of a distribution network area using a dynamic stepless real-time management device, comprising:

[0018] Obtaining actual operating status information and power grid condition information of the bypass unit;

[0019] Determine the required operation status information based on the power grid situation information analysis;

[0020] According to the consistency between the actual operating status information and the required operating status information, the operating status adjustment information is determined and output.

[0021] Optionally, the method for determining the required operating status information includes:

[0022] Analyze the deviation between the power grid condition information and the preset power grid reference condition information and use it as the power grid condition deviation information;

[0023] Retrieving deviation type information based on power grid situation deviation information;

[0024] Determine whether there is a complementary type of deviation type information;

[0025] If yes, the deviation category information of the complementary category is used as the complementary category information;

[0026] According to the correspondence between the complementary type information and the preset complementary type status information, the complementary type status information corresponding to the complementary type information is determined, and the complementary type status information is used as the required operation status information;

[0027] If not, then according to the correspondence between the deviation type information and the preset deviation type status information, the deviation type status information corresponding to the deviation type information is determined, and the deviation type status information is used as the required operation status information.

[0028] Optionally, the method further includes steps after outputting the operation status adjustment information, which are as follows:

[0029] Get communication location information;

[0030] Determine whether the area is in a high proportion of new energy access based on communication location information;

[0031] If yes, outputting the preset energy storage start control information to the communication unit;

[0032] If not, continue to output the operation status adjustment information.

[0033] Optionally, the method further includes steps before obtaining the actual operation status information and grid condition information of the bypass unit, which are specifically as follows:

[0034] Get the demand management location point;

[0035] Based on the demand management location point, retrieve the historical variable capacity of the substation;

[0036] Select energy storage specification value and energy storage capacity value based on the historical capacity change of the substation area;

[0037] The energy storage arrangement specification information is determined by matching the energy storage specification value and the energy storage capacity value, and the energy storage unit is arranged according to the energy storage arrangement specification information.

[0038] In summary, the present invention includes at least one of the following beneficial technical effects:

[0039] 1. Isolate the voltage disturbance on the grid side through the series inverter unit, and compensate the harmonics of the load side current through the parallel inverter unit, so as to reduce the impact of the changes in the grid and load, and then improve the power quality of the distribution network station area;

[0040] 2. By connecting a bypass unit between the control interfaces of the series inverter unit and the series transformer unit, the bypass unit is used to control the on / off, so as to timely adjust and control the connection or disconnection of the series inverter unit and the series transformer unit according to the changes in the power grid and the load, thereby improving the power quality of the distribution network station area;

[0041] 3. By connecting a communication unit to the bypass unit, connecting to the outside world through the communication unit and controlling the opening and closing of the bypass unit, it is convenient to control the connection or disconnection of the series inverter unit and the series transformer unit, thereby improving the power quality of the distribution network station area. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a circuit schematic diagram of a dynamic stepless real-time management device for power quality in a distribution network area according to the first embodiment of the present application.

[0043] Figure 2 It is a circuit schematic diagram of the dynamic stepless real-time management device of the power quality of the distribution network area in the second embodiment of the present application.

[0044] Figure 3 It is a flow chart of the method for managing the power quality of the distribution network area using the dynamic stepless real-time management device of the embodiment of the present application.

[0045] Figure 4 It is a method flow chart of a method for determining demand operation status information according to an embodiment of the present application.

[0046] Figure 5 It is a method flow chart of the steps after outputting the operation status adjustment information in an embodiment of the present application.

[0047] Figure 6 It is a method flow chart of the steps before obtaining the actual operating status information and power grid condition information of the bypass unit in an embodiment of the present application.

[0048] Explanation of the accompanying drawings: 1. Series transformer unit; 2. Series inverter unit; 3. Parallel inverter unit; 4. Bypass unit; 5. Opening and closing module; 6. Contactless switch module; 7. Communication unit; 8. Voltage regulating unit; 9. Parallel transformer unit; 10. Energy storage unit. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0050] Embodiment 1:

[0051] Reference Figure 1, Embodiment 1 of the present invention discloses a dynamic stepless real-time management device for power quality in a distribution network substation. The dynamic stepless real-time management device for power quality in a distribution network substation includes a series transformer unit 1 for voltage adjustment, a series inverter unit 2 for isolating voltage disturbances on the grid side, and a parallel inverter unit 3 for harmonic compensation of load-side current. The series transformer unit 1 is connected between the grid and the local load, the series inverter unit 2 is connected between the control interface of the series transformer unit 1 and the grid, and the parallel inverter unit 3 is connected between the series inverter unit 2 and the grid. A voltage regulating unit 8 for voltage regulation is also connected between the series inverter unit 2 and the parallel inverter unit 3, a bypass unit 4 for controlling opening and closing is connected between the control interface of the series inverter unit 2 and the series transformer unit 1, the bypass unit 4 includes an opening and closing module 5 and a contactless switch module 6 connected in parallel and both used to control opening and closing, and a communication unit 7 for communicating with the outside world and controlling the opening and closing of the bypass unit 4 is connected to the bypass unit 4. The opening and closing of the bypass unit 4 is controlled by the communication unit 7, so that the series inverter unit 2 and the parallel inverter unit 3 are connected between the power grid and the local load. The series inverter unit 2 and the parallel inverter unit 3 are used to timely reduce the impact of changes in the power grid and the load, thereby improving the power quality of the distribution network substation.

[0052] In this embodiment, the series transformer unit 1 is a series coupling transformer T1 and its model is BPXZ-216 / 216KV. The series inverter unit 2 is a series side inverter, and the series side inverter includes a transistor VT1 and a diode D1. The model of the transistor VT1 is IRFP450, and the model of the diode D1 is GMK3045-ASEMI. The parallel inverter unit 3 is a parallel side inverter, and the parallel side inverter includes a transistor VT2 and a diode D2. The model of the transistor VT2 is IRFP450, and the model of the diode D2 is GMK3045-ASEMI. The opening and closing module 5 is a toggle switch S and its model is SS-12D00, and the contactless switch module 6 is a bidirectional thyristor TRIAC and its model is KS200A-12. The voltage regulating unit 8 is a capacitor C1 and its model is SAMYOUNG.

[0053] Among them, the collector of transistor VT1 is connected to the anode of diode D1, and the emitter of transistor VT1 is connected to the cathode of diode D1. The collector of transistor VT2 is connected to the anode of diode D2, and the emitter of transistor VT2 is connected to the cathode of diode D2.

[0054] Embodiment 2:

[0055] Reference Figure 2The difference between the second embodiment of the present invention and the first embodiment is that a parallel transformer unit 9 is connected between the parallel inverter unit 3 and the power grid, and an energy storage unit 10 for storing or discharging energy is also connected between the series inverter unit 2 and the parallel inverter unit 3. The voltage of the power grid is transformed by the parallel transformer unit 9, and energy is stored or discharged by the energy storage unit 10, thereby reducing the impact of changes in the power grid and the load, thereby improving the power quality of the distribution network station area.

[0056] In this embodiment, the parallel transformation unit 9 is a parallel transformer T2 and its model is S11-M-2000 / 10-0.4. The energy storage unit 10 can be a battery, or a photovoltaic device that can be charged and discharged.

[0057] Reference Figure 3 Based on the same inventive concept, an embodiment of the present invention provides a method for managing the power quality of a distribution network area using a dynamic stepless real-time management device, including:

[0058] Step S100: Acquire actual operation status information of the bypass unit 4 and grid condition information.

[0059] The actual operation status information refers to the operation status of the bypass unit 4 during actual use, and the actual operation status information is obtained by querying the bypass unit 4. The power grid status information refers to the comprehensive status of the use of the power grid and the power demand of the user at the current time, and the power grid status information is obtained through pre-input by the operator, and can also be obtained after detecting the power quality of the current power grid.

[0060] Step S200: Determine the required operating status information based on the power grid situation information analysis.

[0061] The required operating status information refers to the operating status of the bypass unit 4 required according to the current grid usage and the user's electricity demand. The required operating status information is determined by analyzing the grid situation information to facilitate subsequent use.

[0062] Step S300: determining operation status adjustment information according to the consistency between the actual operation status information and the required operation status information, and outputting the operation status adjustment information.

[0063] The operation state adjustment information refers to the control information that needs to adjust the operation state of the bypass unit 4. By analyzing the consistency between the actual operation state information and the required operation state information, when the actual operation state information is consistent with the required operation state information, it means that the operation state of the bypass unit 4 does not need to be adjusted at this time, so the preset operation state maintenance information is output and used as the operation state adjustment information. When the actual operation state information is inconsistent with the required operation state information, it means that the operation state of the bypass unit 4 needs to be adjusted at this time, so according to the deviation between the actual operation state information and the required operation state information, the operation state deviation information is determined, and according to the corresponding relationship between the operation state deviation information and the preset operation state deviation adjustment information, the operation state deviation adjustment information corresponding to the operation state deviation information is determined, and the operation state deviation adjustment information is used as the operation state deviation information.

[0064] The operating status deviation information refers to the deviation state corresponding to the operating status of the bypass unit 4 when there is a deviation. The operating status deviation adjustment information refers to the control information adjusted according to the deviation of the operating status of the bypass unit 4. The operating status deviation adjustment information is obtained by querying from a database storing the operating status deviation information and the operating status deviation adjustment information.

[0065] By adjusting the operating status information, the opening and closing of the bypass unit 4 is controlled, so that the series inverter unit 2 and the parallel inverter unit 3 are connected between the power grid and the local load. The series inverter unit 2 and the parallel inverter unit 3 are used to timely reduce the impact of changes in the power grid and the load, thereby improving the power quality of the distribution network substation.

[0066] exist Figure 3 In step S200, in order to further ensure the rationality of the demand operation status information, it is necessary to further analyze and calculate the demand operation status information. Figure 4 The steps shown are explained in detail.

[0067] Reference Figure 4 , the method for determining the required operating status information includes the following steps:

[0068] Step S210: Analyze the deviation between the grid condition information and the preset grid reference condition information and use it as grid condition deviation information.

[0069] Among them, the grid baseline situation information refers to the baseline situation information of the grid usage and user electricity demand under normal circumstances, and the grid situation deviation information refers to the deviation information generated when the grid usage and user electricity demand fluctuate. The deviation between the grid situation information and the preset grid baseline situation information is analyzed and used as the grid situation deviation information, so as to facilitate subsequent use.

[0070] Step S220: Retrieve deviation type information based on the power grid situation deviation information.

[0071] Among them, the deviation type information refers to the type information of the deviation generated when the use of the power grid and the user's electricity demand fluctuate. The power grid situation deviation information includes the deviation type information. The deviation type information is generated by the power grid situation deviation information to facilitate subsequent use.

[0072] Deviation type information includes voltage too low or too high, reactive power shortage, three-phase imbalance, harmonics and other types.

[0073] Step S230: Determine whether the deviation type information has a complementary type. If yes, execute step S240; if no, execute step S260.

[0074] The complementary type refers to the type of two deviation types that can be complementarily operated. By judging whether the deviation type information has a complementary type, it is judged whether the complementation can be controlled.

[0075] For example, when the deviation type information includes a voltage-to-low type and a voltage-to-high type, the voltage-to-low type and the voltage-to-high type are complementary types.

[0076] Step S240: using the deviation type information of the complementary type as the complementary type information.

[0077] Among them, when the deviation type information has complementary types, it means that the complementation can be controlled, so the deviation type information with complementary types is used as complementary type information to facilitate subsequent use.

[0078] Step S250: Determine complementary type status information corresponding to the complementary type information according to the corresponding relationship between the complementary type information and the preset complementary type status information, and use the complementary type status information as the required operation status information.

[0079] The complementary type state information refers to the operating state of the bypass unit 4 corresponding to the complementary type requirement, and the complementary type state information is obtained by querying from a database storing complementary type information and complementary type state information. The complementary type state information is determined by querying the complementary type information, and the complementary type state information is used as the required operating state information for subsequent use.

[0080] Step S260: Determine the deviation type state information corresponding to the deviation type information according to the correspondence between the deviation type information and the preset deviation type state information, and use the deviation type state information as the required operation state information.

[0081] The deviation type status information refers to the operating state of the bypass unit 4 corresponding to the deviation type requirement, and the deviation type status information is obtained by querying from a database storing the deviation type information and the deviation type status information. The deviation type status information is determined by querying the deviation type information, and the deviation type status information is used as the required operating state information for subsequent use.

[0082] exist Figure 3 After step S300, in order to further ensure the rationality of the operation state adjustment information, it is necessary to perform further separate analysis and calculation after outputting the operation state adjustment information. Figure 5 The steps shown are explained in detail.

[0083] Reference Figure 5 , the steps after outputting the operation status adjustment information include the following steps:

[0084] Step S310: Acquire communication location information.

[0085] The communication position information refers to the current position of the bypass unit 4 corresponding to the communication, and the communication position information is obtained by querying the communication unit 7.

[0086] Step S320: Determine whether the location is in a high-proportion area of ​​new energy access based on the communication location information. If yes, execute step S330; if no, execute step S340.

[0087] Among them, the new energy access high proportion area refers to the area where the proportion of new energy access to the power grid is relatively high, and the new energy access high proportion area is obtained after pre-input by the operator.

[0088] By judging whether the communication location information is in an area with a high proportion of new energy access, it is possible to judge whether the power grid situation can be further adjusted and managed through the energy storage unit 10.

[0089] Step S330 : outputting the preset energy storage start control information to the communication unit 7 .

[0090] The energy storage start-up control information refers to control information for controlling the bypass unit 4 corresponding to the communication position information to start up so as to control the operation of the energy storage unit 10 . The energy storage start-up control information is obtained by querying from a database storing the energy storage start-up control information.

[0091] When the communication location information is in an area with a high proportion of new energy access, it means that the power grid situation can be adjusted and managed through the energy storage unit 10 at this time, so the preset energy storage start control information is output to the communication unit 7, thereby controlling the bypass unit 4 corresponding to the communication location information to start up to control the operation of the energy storage unit 10.

[0092] Step S340: Continue to output the operation status adjustment information.

[0093] Among them, when the communication location information is not in the area with a high proportion of new energy access, it means that the power grid situation cannot be adjusted and managed through the energy storage unit 10 at this time, so the operation status adjustment information continues to be output.

[0094] exist Figure 3 Before step S100 shown in the figure, in order to further ensure the rationality of obtaining the actual operating status information of the bypass unit 4 and the grid condition information, it is necessary to perform further separate analysis and calculation before obtaining the actual operating status information of the bypass unit 4 and the grid condition information, specifically by Figure 6 The steps shown are explained in detail.

[0095] Reference Figure 6 The steps before obtaining the actual operation status information and the grid condition information of the bypass unit 4 include the following steps:

[0096] Step S110: Obtain demand management location points.

[0097] Among them, the demand management location point refers to the location point where the power quality in the distribution network area needs to be managed, and the demand management location point is obtained after pre-input by the operator.

[0098] Step S120: Retrieve the historical capacity change of the substation based on the demand management location point.

[0099] Among them, the historical variable capacity of the substation refers to the change value of the change in the electric energy capacity of the distribution network substation at that location within the historical time.

[0100] Step S130: Selecting energy storage specification value and energy storage capacity value based on the historical capacity change of the substation.

[0101] The energy storage specification value refers to the specification corresponding to the single energy storage unit 10 used, and the energy storage capacity value refers to the capacity value that can be stored when a single energy storage unit 10 is performing energy storage. The energy storage specification value and the energy storage capacity value are obtained by querying a database storing the historical variable capacity, energy storage specification value, and energy storage capacity value of the substation.

[0102] The energy storage specification value and energy storage capacity value are selected from the database through the historical capacity change of the substation, so as to facilitate subsequent use.

[0103] Step S140: determining energy storage arrangement specification information by matching the energy storage specification value and the energy storage capacity value, and arranging the energy storage unit 10 according to the energy storage arrangement specification information.

[0104] Among them, the energy storage layout specification information refers to the information on the layout of the energy storage unit 10 according to the specifications of the energy storage unit 10. The energy storage layout specification information uses a preset layout analysis method to match and analyze the energy storage specification value and the energy storage capacity value, and outputs the energy storage layout specification information. The energy storage unit 10 is then arranged according to the energy storage layout specification information, so as to facilitate the subsequent use of the energy storage unit 10 to manage the power quality at the demand management location point.

[0105] Furthermore, in order to improve the accuracy of the acquired energy storage layout specification information, it is also necessary to analyze the layout analysis method, which includes the following steps:

[0106] Step S141: Retrieve the floor space value based on the energy storage specification value.

[0107] The occupied volume value refers to the volume value of the space occupied by a single energy storage unit 10 when it is placed and installed. The energy storage specification value includes the occupied volume value, which is obtained by querying the database storing the occupied volume value. By retrieving the occupied volume value, it is convenient for subsequent use.

[0108] Step S142: Calculate the ratio between the energy storage capacity value and the occupied volume value and use it as the floor space utilization rate.

[0109] The floor space utilization rate refers to the utilization rate of the space when a single energy storage unit 10 corresponding to the specification is placed. The ratio between the energy storage capacity value and the floor space value is calculated and used as the floor space utilization rate to facilitate subsequent use.

[0110] Step S143: Retrieve regional idle space information according to the required management location point.

[0111] Among them, regional idle space information refers to the space information corresponding to the space in the distribution network area where the demand management location point is located when it is idle. The regional idle space information is obtained by querying from the database storing regional idle space information based on the demand management location point. The database storing regional idle space information is queried and read through the government website, and can also be obtained and stored by identifying the vacant areas on the map of the area and analyzing them.

[0112] Step S144: Determine the idle space utilization benchmark rate based on regional idle space information analysis.

[0113] Among them, the idle space utilization benchmark rate refers to the minimum utilization rate that needs to be achieved when using the idle space. By analyzing the regional idle space information, the idle space utilization benchmark rate is determined to facilitate subsequent use.

[0114] Step S145: Determine idle space layout information based on the comparison result between the land utilization rate and the idle space utilization benchmark rate, and combine all idle space layout information as energy storage layout specification information.

[0115] Among them, the idle space layout information refers to the layout information of a single specification of energy storage unit 10 arranged in a single idle space. The idle space layout information is determined by analyzing the comparison results between the floor space utilization rate and the idle space utilization benchmark rate, and then all the idle space layout information is combined and used as the energy storage layout specification information, thereby improving the accuracy of the acquired energy storage layout specification information.

[0116] Furthermore, in order to improve the accuracy of the obtained idle space utilization benchmark rate, it is also necessary to analyze the idle space utilization benchmark rate. The method for determining the idle space utilization benchmark rate includes the following steps:

[0117] Step S1441: Retrieve idle space type information and idle space location points based on regional idle space information.

[0118] The regional idle space information includes idle space category information and idle space location points. The idle space category information refers to the category information to which the idle space belongs, and the idle space category information is obtained by querying from a database storing the idle space category information. The idle space location point refers to the location point where the idle space is located, and the idle space location point is obtained by querying from a database storing the idle space location points. The idle space category information and idle space location points are retrieved through the regional idle space information, so as to facilitate subsequent use.

[0119] Step S1442: determining the idle space type benchmark utilization rate corresponding to the idle space type information according to the corresponding relationship between the idle space type information and the preset idle space type benchmark utilization rate.

[0120] The idle space type benchmark utilization rate refers to the minimum benchmark utilization rate that needs to be achieved when the idle space type is used. The idle space type benchmark utilization rate is obtained by querying a preset database that stores idle space type information and idle space type benchmark utilization rates. The idle space type benchmark utilization rate is determined by querying the idle space type information to facilitate subsequent use.

[0121] Step S1443: Based on the idle space location point, retrieve the used space type information and the used space center location point of the nearby location.

[0122] The use space type information refers to the type information of the space used at the location near the idle space location point, and the use space center location point refers to the location point where the center of the use space is located. The use space type information and the use space center location point are both obtained by querying a map that pre-stores the idle space location points, the use space type information, and the use space center location points. The use space type information and the use space center location point of the nearby location are retrieved through the idle space location point, so as to facilitate subsequent use.

[0123] Step S1444: Based on the correspondence between the used space type information and the preset used space type benchmark utilization rate, determine the used space type benchmark utilization rate corresponding to the idle space type information.

[0124] The use space type benchmark utilization rate refers to the minimum benchmark utilization rate that needs to be achieved when the use space belongs to a certain type. The use space type benchmark utilization rate is obtained by querying from a database that pre-stores the use space type information and the use space type benchmark utilization rate. The use space type benchmark utilization rate is determined by querying the idle space type information to facilitate subsequent use.

[0125] Step S1445: Calculate the distance between the idle space location point and the center location point of the used space and use it as the idle space adjacent distance value.

[0126] Among them, the idle space adjacent distance value refers to the distance value between the location of the idle space and the center location of the used space. The distance value between the idle space location point and the center location point of the used space is calculated and used as the idle space adjacent distance value to facilitate subsequent use.

[0127] Step S1446: Determine the neighboring distance utilization impact value corresponding to the idle space usage neighboring distance value according to the correspondence between the idle space usage neighboring distance value and the preset neighboring distance utilization impact value.

[0128] The adjacent distance utilization rate impact value refers to the impact value generated by the distance between the idle space location and the center location of the used space. The adjacent distance utilization rate impact value is obtained by querying from a database storing the idle space use adjacent distance value and the adjacent distance utilization rate impact value. The adjacent distance utilization rate impact value is determined by querying the idle space use adjacent distance value, so as to facilitate subsequent use.

[0129] Step S1447: Calculate the sum of the product of the adjacent distance utilization impact value and the reference utilization of the used space type and the reference utilization of the idle space type and use it as the reference utilization rate of the idle space.

[0130] Among them, by calculating the product value between the adjacent distance utilization impact value and the benchmark utilization rate of the type of space used, the comprehensive benchmark utilization rate of the space used generated by the type of space used and the distance between the idle space and the center of the space used is obtained, and then the sum of the comprehensive benchmark utilization rate of the space used and the benchmark utilization rate of the idle space type is calculated, and the sum is used as the idle space utilization benchmark rate, thereby improving the accuracy of the obtained idle space utilization benchmark rate.

[0131] Furthermore, in order to improve the accuracy of the idle space layout information obtained, it is also necessary to analyze the idle space layout information. The method for determining the idle space layout information includes the following steps:

[0132] Step S1451: Determine whether the floor space utilization rate is less than the idle space utilization benchmark rate. If yes, execute step S1452; if no, execute step S1453.

[0133] Here, whether the idle space can be used to arrange the energy storage unit 10 is determined by judging whether the floor space utilization rate is less than the idle space utilization reference rate.

[0134] Step S1452: outputting preset idle space idle information as idle space arrangement information.

[0135] The idle space idle information refers to the arrangement information of the idle space that continues to be idle, and the idle space idle information is obtained by querying from a database that pre-stores the idle space idle information. When the land utilization rate is less than the idle space utilization benchmark rate, it means that the idle space cannot be arranged with the energy storage unit 10 at this time, so the preset idle space idle information is output and used as the idle space arrangement information, thereby improving the accuracy of the idle space arrangement information obtained.

[0136] Step S1453: the volume corresponding to the idle space information of the area corresponding to the area where the land utilization rate is greater than the idle space utilization benchmark rate is used as the idle selected space volume value, and the corresponding idle space type is used as the idle selected space type information.

[0137] Among them, the idle selected space volume value refers to the volume value corresponding to the idle selected space after the idle space that can be used to arrange the energy storage unit 10 is selected as the idle selected space. The idle selected space type information refers to the idle selected space volume value refers to the type information corresponding to the idle selected space after the idle space that can be used to arrange the energy storage unit 10 is selected as the idle selected space. When the land utilization rate is not less than the idle space utilization benchmark rate, it means that the idle space can be used to arrange the energy storage unit 10. Therefore, by defining the idle selected space volume value and the idle selected space type information, it is convenient for subsequent use.

[0138] Step S1454: Based on the idle selected space volume value, select the energy storage specification value corresponding to the largest occupied volume value and use it as the selected specification value.

[0139] Among them, the selected specification value refers to the specification value selected when the energy storage unit 10 is arranged in the idle space. By selecting the largest occupied volume value that is not greater than the volume value of the idle selected space, and using the corresponding energy storage specification value as the selected specification value, it is convenient for subsequent use.

[0140] Step S1455: Determine the installation plan information corresponding to the idle selected space type information based on the correspondence between the idle selected space type information and the preset installation plan information, and combine the installation plan information, the selected specification value and the idle space location point as the idle space layout information.

[0141] The installation plan information refers to the plan information for installing the energy storage unit 10, and the installation plan information is obtained by querying a database that pre-stores idle selected space type information and installation plan information. The installation plan information is determined by querying the idle selected space type information, and the installation plan information, the selected specification value, and the idle space location point are combined as the idle space layout information, thereby improving the accuracy of the idle space layout information obtained.

[0142] Furthermore, in order to improve the accuracy of the selected specification value, the selected specification value needs to be analyzed. The steps after selecting the energy storage specification value corresponding to the maximum occupied volume value based on the idle selected space volume value and using it as the selected specification value also include the following steps:

[0143] Step S14521: Determine whether the selected specification value can be selected. If yes, execute step S14522; if no, execute step S14523.

[0144] Among them, by judging whether the selected specification value can be selected, it is judged whether the idle selected space can be used to place the energy storage unit 10.

[0145] Step S14522: Continue to output the selected specification values.

[0146] Among them, when the selected specification value can be selected, it means that the idle selection space at this time can place the energy storage unit 10, so the selected specification value continues to be output.

[0147] Step S14523: Calculate the difference between the idle selected space volume value and the minimum value of the selected occupied volume value and use it as the idle selected space deviation value.

[0148] Among them, the idle selected space deviation value refers to the deviation value when there is a deviation in the volume of the idle selected space. When the selected specification value cannot be selected, it means that the idle selected space cannot place the energy storage unit 10 at this time. Therefore, the difference between the idle selected space volume value and the minimum value of the selected occupied volume value is analyzed and calculated and used as the idle selected space deviation value for subsequent use.

[0149] Step S14524: Retrieve the type space adjustment volume value based on the used space type information corresponding to the idle selected space volume value.

[0150] Among them, the type space adjustment volume value refers to the adjustment volume value that can be adjusted in the usage space. The type space adjustment volume value is retrieved by using the usage space type information corresponding to the idle selected space volume value, so as to facilitate subsequent use.

[0151] Step S14525: Select the used space type information corresponding to the type space adjustment volume value that is greater than the type space adjustment volume value and use it as the adjustable space type information.

[0152] Among them, the adjustable space type information refers to the space type information that can adjust the space. The use space type information corresponding to the type space adjustment volume value that is greater than the type space adjustment volume value is selected, and the selected use space type information is used as the adjustable space type information to facilitate subsequent use.

[0153] Step S14526: Retrieve space adjustment type information and adjustment convenience value based on the adjustable space type information.

[0154] The space adjustment type information refers to the type information of the adjustment method when adjusting the space, and the space adjustment type information is obtained by querying from a database storing the space adjustment type information. The adjustment convenience value refers to the convenience value of the type of the adjustment method when adjusting the space, and the adjustment convenience value is obtained by querying from a database storing the adjustment convenience values.

[0155] Step S14527: Reselect the selected specification value based on analysis of the space adjustment convenience value and the category space adjustment volume value.

[0156] Among them, by analyzing the space adjustment convenience value and the type space adjustment volume value, the selection influence value corresponding to the space adjustment convenience value and the selection influence value corresponding to the type space adjustment volume value are integrated, and then the idle selection space volume value corresponding to the largest comprehensive value is selected and then the selection specification value is reselected.

[0157] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for dynamic stepless real-time management of power quality in a distribution network area, wherein the method is managed by a dynamic stepless real-time management device for power quality in a distribution network area, and is characterized in that: The dynamic stepless real-time management device for power quality in the distribution network area includes: A series transformer unit (1) connected between the power grid and the local load for voltage adjustment; A series inverter unit (2) connected between the control interface of the series transformer unit (1) and the power grid, and used to isolate voltage disturbances on the power grid side; A parallel inverter unit (3) is connected between the series inverter unit (2) and the power grid and is used to perform harmonic compensation on the load-side current; A bypass unit (4) for controlling on and off is connected between the control interface of the series inverter unit (2) and the series transformer unit (1); The bypass unit (4) comprises an on / off module (5) and a contactless switch module (6) for controlling on / off, wherein the on / off module (5) and the contactless switch module (6) are connected in parallel between the control interfaces of the series inverter unit (2) and the series transformer unit (1); The bypass unit (4) is connected to a communication unit (7) for communicating with the outside world, and the communication unit (7) is used to control the bypass unit (4) to open or close; A voltage regulating unit (8) for voltage regulation is also connected between the series inverter unit (2) and the parallel inverter unit (3); A parallel transformer unit (9) is connected between the parallel inverter unit (3) and the power grid, and an energy storage unit (10) for storing or releasing energy is also connected between the series inverter unit (2) and the parallel inverter unit (3); The dynamic stepless real-time management method for power quality in the distribution network area includes: Acquiring actual operating status information and power grid status information of the bypass unit (4); Determine the required operation status information based on the power grid situation information analysis; Determine the operation status adjustment information according to the consistency between the actual operation status information and the required operation status information, and output the operation status adjustment information; Methods for determining the required operating status information include: Analyze the deviation between the power grid condition information and the preset power grid reference condition information and use it as the power grid condition deviation information; Retrieving deviation type information based on power grid situation deviation information; Determine whether there is a complementary type of deviation type information; If yes, the deviation category information of the complementary category is used as the complementary category information; According to the correspondence between the complementary type information and the preset complementary type status information, the complementary type status information corresponding to the complementary type information is determined, and the complementary type status information is used as the required operation status information; If not, then according to the correspondence between the deviation type information and the preset deviation type status information, the deviation type status information corresponding to the deviation type information is determined, and the deviation type status information is used as the required operation status information.

2. The method for dynamic stepless real-time management of power quality in distribution network area according to claim 1 is characterized in that: The steps after outputting the operation status adjustment information are also included, which are as follows: Get communication location information; Determine whether the area is in a high proportion of new energy access based on communication location information; If yes, outputting preset energy storage start control information to the communication unit (7); If not, continue to output the operation status adjustment information.

3. The dynamic stepless real-time management method for power quality in distribution network area according to claim 1 is characterized in that: The method further includes steps before obtaining the actual operation status information and grid condition information of the bypass unit (4), which are specifically as follows: Get the demand management location point; Based on the demand management location point, retrieve the historical variable capacity of the substation area; Select energy storage specification value and energy storage capacity value based on the historical capacity change of the substation area; Energy storage arrangement specification information is determined by matching the energy storage specification value and the energy storage capacity value, and the energy storage unit (10) is arranged according to the energy storage arrangement specification information.

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