CN111404164A - Analysis optimization method and system based on distribution network voltage quality cause - Google Patents
Analysis optimization method and system based on distribution network voltage quality cause Download PDFInfo
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- CN111404164A CN111404164A CN202010131934.4A CN202010131934A CN111404164A CN 111404164 A CN111404164 A CN 111404164A CN 202010131934 A CN202010131934 A CN 202010131934A CN 111404164 A CN111404164 A CN 111404164A
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- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- 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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The invention discloses an analysis optimization method and system based on distribution network voltage quality cause, which comprises the steps of collecting relevant data to carry out corresponding data analysis and verification; researching the influence of the data on the voltage of the power distribution network, and analyzing the reasons of the high and low voltage states; and analyzing and optimizing the voltage quality cause by utilizing the technical principle of comprehensive high-voltage and low-voltage treatment of the power distribution network and the differentiated high-voltage and low-voltage treatment strategies of the power distribution network. The method provided by the invention provides a corresponding treatment strategy for optimization by visually analyzing the power grid voltage quality cause, increases effective precautionary measures for high and low voltage risks, evaluates and researches the countermeasures for high and low voltages generated in the operation of the distribution network, and simply and directly provides an efficient judgment method for production personnel.
Description
Technical Field
The invention relates to the technical field of power engineering, in particular to an analysis optimization method and system based on distribution network voltage quality cause.
Background
At present, a plurality of service systems such as a production system, a metering automation system, a scheduling automation system and the like are configured in a power grid, and in the actual operation process, each professional system cannot automatically collect and compare data for distribution network work management at present, so that a large amount of manual maintenance is needed. The dispatching professional does not have the safety research of the distribution network equipment operation record and the distribution net information available distribution network load transfer mode, and the low-voltage problem of the distribution network which possibly occurs lacks a pertinence precaution measure. With the increasingly complex construction of distribution networks, the load transfer condition is very common, but the current system only limits the load current after the load transfer, the influence of actual voltage cannot be analyzed, and effective precaution measures for high and low voltage risks are lacked. And countermeasures of high and low voltages generated in the operation of the distribution network cannot be evaluated.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned conventional problems.
Therefore, the technical problem solved by the invention is as follows: the method and the system for analyzing and optimizing the voltage quality cause of the distribution network are provided, the voltage quality of the power grid is visually analyzed, and a corresponding optimized voltage quality treatment decision is provided.
In order to solve the technical problems, the invention provides the following technical scheme: collecting related data to perform corresponding data analysis and verification; researching the influence of the data on the voltage of the power distribution network, and analyzing the reasons of the high and low voltage states; and analyzing and optimizing the voltage quality cause by utilizing the technical principle of comprehensive high-voltage and low-voltage treatment of the power distribution network and the differentiated high-voltage and low-voltage treatment strategies of the power distribution network.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: the data includes, a network structure; line selection and aging state; a mains grid voltage level; bus voltage and bus voltage qualification rate; equipment technical level; distributing the load; a change in load curve; the radius of the power supply; the section of the power supply lead; the distribution transformer load rate; three-phase load balancing rate; a power supply capability; and reactive compensation adequacy.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: analyzing and checking the data, including counting data information in a production management system, a scheduling automation system, a metering automation system, a marketing system and a GIS system; generating a new data table by using the marketing system according to the data information required by the voltage quality; and setting a threshold value in advance in combination with the excellence of the voltage quality, and performing one-to-one comparison analysis on reasons by using the data in the data table.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: the reasons include the likelihood, cause, regularity and character of the high and low voltage conditions.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: the analyzed reasons comprise low bus voltage, overlong power supply radius, thin wire diameter, low power factor, overload of a distribution transformer, phase-lacking operation, wrong wiring, zero line disconnection and operation mode adjustment.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: analyzing the reasons, and proposing the technical principle and the management strategy, aiming at different high and low voltage modes of the power distribution network, combining different technical management means, including combining network structure optimization, transformer capacity increase, wire section increase, single three-phase load power supply mode, reactive compensation and voltage regulator optimization configuration, distributed power supply optimization configuration, three-phase load unbalance management, tap adjustment, reactive compensation optimization control and load demand side management.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: the governing strategy comprises the steps of optimizing a power supply network structure by using the data in the production management system, increasing or adjusting the capacity of a transformer, replacing a lead and adjusting a three-phase load; reasonably selecting a power supply line and a power supply station to supply power by using the data in the dispatching automation system; the data in the metering automation system and the marketing system are combined to judge metering wiring, phase failure and zero line disconnection; and adjusting the power supply line and the power supply station by using the battle line-to-user relationship of the marketing system, the data in the GIS system and the capacity of the transformer substation.
As an optimized scheme of the analysis and optimization method based on the distribution network voltage quality cause, the method comprises the following steps: analyzing the voltage quality by using the technical principle and the governing strategy and providing the corresponding governing strategy, wherein the step of comparing the data and analyzing and judging the excellence of the voltage quality by using the threshold value is included; analyzing the reason of the poor voltage quality and prompting; and utilizing the data to provide a rectification measure to optimize the voltage quality.
As an optimal scheme of the analysis and optimization system based on the distribution network voltage quality cause, the method comprises the following steps: comprises an acquisition module, a data acquisition module and a data acquisition module, wherein the acquisition module is used for collecting the data related to research and providing basic research data; the data center module is used for storing the collected data and recording analysis result data; the analysis module is used for finely analyzing the influence of the data on the quality of the power grid, making a corresponding index scheme and forming a treatment decision; the verification module is used for verifying and verifying the acquired data; and the management module is used for counting the analysis result data and the verification result data.
The invention has the beneficial effects that: the method provided by the invention provides a corresponding treatment strategy for optimization by visually analyzing the power grid voltage quality cause, increases effective precautionary measures for high and low voltage risks, evaluates and researches the countermeasures for high and low voltages generated in the operation of the distribution network, and simply and directly provides an efficient judgment method for production personnel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic flow chart of an analysis optimization method based on distribution network voltage quality cause according to a first embodiment of the present invention;
fig. 2 is a schematic block diagram of a distribution structure of an analysis optimization system based on distribution network voltage quality cause according to a second embodiment of the present invention;
fig. 3 is a schematic network structure distribution diagram of an analysis optimization system based on distribution network voltage quality cause according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The power grid is provided with a plurality of service systems such as a production system, a metering automation system and a scheduling automation system, in the actual operation process, each professional system cannot automatically collect and compare data for distribution network work management, a large amount of manual maintenance is needed, the scheduling professional system does not have the operation records of distribution network equipment and the information of a station account for the safety research of the distribution network load transfer mode, the problem of low voltage of a distribution network which possibly occurs lacks targeted precautionary measures, the influence of the actual voltage cannot be analyzed, the risk of high and low voltages lacks effective precautionary measures, and the countermeasure of high and low voltages generated in the operation of the distribution network cannot be evaluated.
Referring to fig. 1, a first embodiment of the present invention provides an analysis optimization method based on distribution network voltage quality cause, including:
s1: and collecting related data to perform corresponding data analysis and verification. It should be noted that the data includes:
a network structure;
line selection and aging state;
a mains grid voltage level;
bus voltage and bus voltage qualification rate;
equipment technical level;
distributing the load;
a change in load curve;
the radius of the power supply;
the section of the power supply lead;
the distribution transformer load rate;
three-phase load balancing rate;
a power supply capability;
and reactive compensation adequacy.
Further, analyzing the verification data, comprising:
counting data information in a production management system, a scheduling automation system, a metering automation system, a marketing system and a GIS system;
generating a new data table by using the marketing system according to the data information required by the voltage quality;
a threshold value is set in advance in combination with excellence of the voltage quality, and the reason is analyzed by comparing the data in the data table one by one.
S2: and (5) researching the influence of data on the voltage of the power distribution network and analyzing the reasons of the high and low voltage states. The reason for this step is that:
likelihood, cause, regularity and character of occurrence of high and low voltage conditions.
Specifically, the reasons for the analysis include:
the method has the advantages of low bus voltage, overlong power supply radius, thin wire diameter, low power factor, overload of a distribution transformer, open-phase operation, wrong wiring, zero line disconnection and operation mode adjustment.
S3: and analyzing and optimizing the voltage quality cause by utilizing the technical principle of comprehensive high-voltage and low-voltage treatment of the power distribution network and the differentiated high-voltage and low-voltage treatment strategies of the power distribution network. It should be noted that, for analyzing reasons, the proposed technical principles and governing strategies need to be combined with different technical management means for different high and low voltage modes of the power distribution network, and the method includes:
the method is characterized by combining network structure optimization, transformer capacity increase, wire section increase, single three-phase load power supply mode, reactive compensation and voltage regulator optimization configuration, distributed power supply optimization configuration, three-phase load unbalance management, tap adjustment, reactive compensation optimization control and load demand side management.
Further, the abatement strategy comprises:
optimizing a power supply network structure by using data in a production management system, increasing or adjusting the capacity of a transformer, replacing a lead and adjusting a three-phase load;
reasonably selecting a power supply line and a power supply station to supply power by using data in a dispatching automation system;
the data in the measurement automation system and the marketing system are combined to judge measurement wiring, phase failure and zero line disconnection;
and the power supply line and the power supply station are adjusted by utilizing the battle line-to-user relationship of the marketing system, data in the GIS system and the capacity of the transformer substation.
Preferably, analyzing the voltage quality and providing a corresponding abatement strategy using the technical principles and abatement strategies comprises:
comparing data, and analyzing and judging the excellence of the voltage quality by using a threshold value;
analyzing the reason of poor voltage quality and prompting;
and (4) utilizing data to provide a rectification measure to optimize the voltage quality.
Preferably, the method of the invention is switched in from mass data, relevant excel tables are derived from the existing data platform, modeling analysis is carried out, and strategy service for voltage quality cause analysis and optimization of a strategy system is formed, and the method specifically comprises the following steps:
SS 1: collecting relevant required data from a metering automation system, an OS2 system and the like, and performing corresponding data analysis and verification on the data to provide basic research data;
SS 2: by researching the influence of a grid structure, a line model selection and aging state, a main network voltage level, an equipment technical level, load distribution, load curve change, a power supply radius, power supply capacity, reactive compensation adequacy and the like on the voltage of the power distribution network, the mechanism problems such as the possibility of occurrence of high and low voltage problems, inducement, law, characteristics and the like are analyzed;
SS 3: aiming at different high and low voltage typical modes of the power distribution network, combining various technologies and management means such as network structure optimization, transformer capacity increase, wire section increase, single three-phase load power supply mode, reactive compensation and voltage regulator optimization configuration, distributed power supply optimization configuration, three-phase load unbalance management, tap adjustment, reactive compensation optimization control, load demand side management and the like, the technical principle of comprehensive high and low voltage management of the power distribution network and differentiated high and low voltage management strategies of the power distribution network are provided;
SS 4: and voltage quality cause analysis and optimization strategy research are carried out, voltage quality fine analysis is realized, and high and low voltage problem treatment decision suggestions are formed.
Preferably, the excellent distribution network voltage quality is analyzed, the voltage quality is improved, and the voltage qualification rate can be effectively improved, for example, a transformer substation adopts an automatic voltage regulating transformer to properly regulate a load according to the living power utilization condition of a user, so that the load rate is improved, and the voltage quality is further improved; for another example, the electric power overhaul personnel should maintain and overhaul the low-voltage power grid, ensure the normal operation of the low-voltage power grid, avoid the abnormal operation of the voltage caused by the operation of the unbalanced three-phase load, and improve the voltage quality and the voltage qualification rate; in order to better illustrate that the improvement of the voltage quality can improve the voltage qualification rate, the utilization rate of the capacitor and the guarantee capability of the safe operation of the voltage, the embodiment compares the data of the traditional voltage quality evaluation method with the voltage quality cause analysis optimization method, and verifies and illustrates the effectiveness and feasibility of the method. As shown in the following table:
table 1: the conventional method adjusts the data table.
| Time of acquisition | System voltage/KV | System current/A | Power factor | Reactive deficit/Kvar |
| 8:00～9:00 | 10.01 | 131 | 0.83 | 1285 |
| 9:00～10:00 | 10.06 | 102 | 0.83 | 1068 |
| 10:00～11:00 | 10.13 | 98 | 0.86 | 889 |
| 11:00～12:00 | 10.15 | 98 | 0.85 | 916 |
| 12:00～13:00 | 10.20 | 92 | 0.86 | 924 |
| 13:00～14:00 | 10.21 | 90 | 0.88 | 763 |
| 14:00～15:00 | 10.23 | 90 | 0.84 | 529 |
| 15:00～16:00 | 10.26 | 85 | 0.84 | 821 |
| 16:00:17:00 | 10.30 | 65 | 0.83 | 647 |
| 17:00～18:00 | 10.20 | 70 | 0.84 | 678 |
Table 2: the method of the present invention adjusts the data table.
Referring to tables 1 and 2, it can be seen that the method of the present invention improves the utilization rate of the capacitor, and especially when the system has a small reactive power demand, the method can fully play a role of reactive power compensation, the power factor mostly lasts for more than 0.98, the voltage regulator is adopted to regulate the reactive power, the number of the gears of the voltage regulator is large, the voltage change of the capacitor terminal is small, the single reactive power regulation quantity is low, the influence on the grid voltage is small, the frequent action of the main transformer tapping switch is avoided, because the reactive power compensation capacity regulating mode is changed, the switching times of the capacitor switch cabinet are greatly reduced, the times of the capacitor switching inrush current and the operation overvoltage are also reduced, the service life is prolonged, and the voltage safe operation.
Furthermore, the method of the invention utilizes the data of each system to comprehensively judge and generate a table, thereby providing instructive opinions on the rectification measures, the data is stored in the system in real time and does not need to be checked on site. As shown in the following table:
table 3: and (4) correcting the cause of poor voltage quality.
Preferably, in order to verify and explain the technical effects adopted in the method of the present invention, the embodiment selects to compare the traditional manual inspection method with the method of the present invention for testing, and compares the test results by means of scientific demonstration to verify the real effects of the method of the present invention; in the traditional technical method, a technician is required to find problems on site, the time and the labor are consumed, the method integrates data in various systems, the problems are judged by combining real data in various systems, and instructive opinions are provided for the technician, so that the method has the advantage of reducing checking time compared with the traditional method, and in the embodiment, the traditional method and the method are adopted to respectively carry out real-time measurement and comparison on the operation data of various systems in the power grid voltage operation; the traditional method needs manual operation to check problems and obtain test result data, and by adopting the method, an automatic calculation system is used for automatically acquiring data information and integrating the data information to obtain the test result data, 10 groups of data are tested, and the time for obtaining each group of data is calculated and compared. As shown in the following table:
table 3: time comparison table.
As can be seen from table 3, the conventional manual checking method is time-consuming and labor-consuming, and if a technician cannot arrive at a problem site in time, the technician cannot repair the power grid in time, and the power grid cannot have good safety guarantee during operation, and the time comparison data can intuitively show that the method is fully utilized in the automatic computing system, so that the method can check the power grid in the first time even if the power grid has a problem, thereby reducing unnecessary time waste, verifying that the method has the technical effect of reducing the checking time, and can timely and accurately provide instructive opinions for the technician.
Example 2
Referring to fig. 2 and 3, a second embodiment of the present invention, which is different from the first embodiment, provides an analysis optimization system based on distribution network voltage quality cause, including,
an acquisition module 100 for collecting data related to a study and providing basic study data.
And the data center module 200 is used for storing the collected data and recording the analysis result data.
And the analysis module 300 is used for finely analyzing the influence of the data on the power grid quality, making a corresponding index scheme and forming a treatment decision.
A verification module 400 for verifying and verifying the collected data.
And the management module 500 is configured to count the analysis result data and the verification result data.
It should be recognized that embodiments of the present invention can be realized and implemented by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with the computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, according to the methods and figures described in the detailed description. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Further, the operations of processes described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described herein (or variations and/or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) collectively executed on one or more processors, by hardware, or combinations thereof. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable interface, including but not limited to a personal computer, mini computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and the like. Aspects of the invention may be embodied in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optically read and/or write storage medium, RAM, ROM, or the like, such that it may be read by a programmable computer, which when read by the storage medium or device, is operative to configure and operate the computer to perform the procedures described herein. Further, the machine-readable code, or portions thereof, may be transmitted over a wired or wireless network. The invention described herein includes these and other different types of non-transitory computer-readable storage media when such media include instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. The invention also includes the computer itself when programmed according to the methods and techniques described herein. A computer program can be applied to input data to perform the functions described herein to transform the input data to generate output data that is stored to non-volatile memory. The output information may also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including particular visual depictions of physical and tangible objects produced on a display.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. An analysis optimization method based on distribution network voltage quality causes is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
collecting related data to perform corresponding data analysis and verification;
researching the influence of the data on the voltage of the power distribution network, and analyzing the reasons of the high and low voltage states;
and analyzing and optimizing the voltage quality cause by utilizing the technical principle of comprehensive high-voltage and low-voltage treatment of the power distribution network and the differentiated high-voltage and low-voltage treatment strategies of the power distribution network.
2. The method for analysis and optimization based on distribution network voltage quality cause according to claim 1, characterized by: the data may include, for example,
network structure, line model selection and aging state, main network voltage level, bus voltage and bus voltage qualification rate, equipment technical level, load distribution and load curve change;
the system also comprises a power supply radius, a power supply lead section, a distribution transformer load rate, a three-phase load balance rate, power supply capacity and reactive power compensation adequacy.
3. The method for analysis and optimization based on distribution network voltage quality cause according to claim 1 or 2, characterized by: analyzing and verifying the data, including,
counting data information in a production management system, a scheduling automation system, a metering automation system, a marketing system and a GIS system;
generating a new data table by using the marketing system according to the data information required by the voltage quality;
and setting a threshold value in advance in combination with the excellence of the voltage quality, and performing one-to-one comparison analysis on reasons by using the data in the data table.
4. The method of claim 3 for analysis and optimization based on distribution network voltage quality cause, wherein: the reasons include that the above-mentioned reasons include,
likelihood, cause, regularity and character of the high and low voltage states.
5. The method of claim 4 for analysis and optimization based on distribution network voltage quality cause, wherein: the reasons for the analysis include that,
the method has the advantages of low bus voltage, overlong power supply radius, thin wire diameter, low power factor, overload of a distribution transformer, open-phase operation, wrong wiring, zero line disconnection and operation mode adjustment.
6. The method for analysis and optimization based on distribution network voltage quality cause according to claim 1 or 5, characterized by: analyzing the reasons, the technical principle and the governing strategy are proposed by combining different technical management means aiming at different high and low voltage modes of the power distribution network, including,
the method is characterized by combining network structure optimization, transformer capacity increase, wire section increase, single three-phase load power supply mode, reactive compensation and voltage regulator optimization configuration, distributed power supply optimization configuration, three-phase load unbalance management, tap adjustment, reactive compensation optimization control and load demand side management.
7. The method of claim 6, wherein the method comprises: the treatment strategy comprises the following steps of,
optimizing a power supply network structure by using the data in the production management system, increasing or adjusting the capacity of a transformer, replacing a lead and adjusting a three-phase load;
reasonably selecting a power supply line and a power supply station to supply power by using the data in the dispatching automation system;
the data in the metering automation system and the marketing system are combined to judge metering wiring, phase failure and zero line disconnection;
and adjusting the power supply line and the power supply station by using the battle line-to-user relationship of the marketing system, the data in the GIS system and the capacity of the transformer substation.
8. The method for analysis and optimization based on distribution network voltage quality cause according to claim 1 or 7, characterized by: analyzing the voltage quality using the technical principles and the abatement strategies and providing corresponding abatement strategies, including,
comparing the data, and analyzing and judging the excellence of the voltage quality by utilizing the threshold value;
analyzing the reason of the poor voltage quality and prompting;
and utilizing the data to provide a rectification measure to optimize the voltage quality.
9. The utility model provides an analysis optimization system based on distribution network voltage quality cause which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
an acquisition module (100) for collecting said data relating to a study, providing basic study data;
the data center module (200) is used for storing the collected data and recording analysis result data;
the analysis module (300) is used for finely analyzing the influence of the data on the power grid quality, making a corresponding index scheme and forming a treatment decision;
a verification module (400) for verifying and verifying the data collected;
and the management module (500) is used for counting the analysis result data and the verification result data.
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Cited By (3)
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|---|---|---|---|---|
| CN112348701A (en) * | 2020-11-06 | 2021-02-09 | 贵州电网有限责任公司 | Method, device and system for processing power supply station line-to-user data and electronic equipment |
| CN113065731A (en) * | 2020-09-18 | 2021-07-02 | 国网浙江省电力有限公司金华供电公司 | Voltage quality problem cause analysis method and system based on ridge regression algorithm |
| CN113629719A (en) * | 2021-07-30 | 2021-11-09 | 广西电网有限责任公司电力科学研究院 | Low-voltage quality management and control system and method with high efficiency |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750561A (en) * | 2010-01-08 | 2010-06-23 | 江苏大学 | Electrical energy quality monitoring and evaluating system |
| CN108182323A (en) * | 2017-12-25 | 2018-06-19 | 华南理工大学 | A kind of intelligent operation management method for low-voltage network |
| CN109842122A (en) * | 2017-11-27 | 2019-06-04 | 国网辽宁省电力有限公司经济技术研究院 | A kind of low-voltage platform area low-voltage administering method |
-
2020
- 2020-02-29 CN CN202010131934.4A patent/CN111404164A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750561A (en) * | 2010-01-08 | 2010-06-23 | 江苏大学 | Electrical energy quality monitoring and evaluating system |
| CN109842122A (en) * | 2017-11-27 | 2019-06-04 | 国网辽宁省电力有限公司经济技术研究院 | A kind of low-voltage platform area low-voltage administering method |
| CN108182323A (en) * | 2017-12-25 | 2018-06-19 | 华南理工大学 | A kind of intelligent operation management method for low-voltage network |
Non-Patent Citations (1)
| Title |
|---|
| 张敏: "云南农村低压电网电压质量分析与改进措施", 《价值工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113065731A (en) * | 2020-09-18 | 2021-07-02 | 国网浙江省电力有限公司金华供电公司 | Voltage quality problem cause analysis method and system based on ridge regression algorithm |
| CN113065731B (en) * | 2020-09-18 | 2023-01-31 | 国网浙江省电力有限公司金华供电公司 | Voltage quality problem cause analysis method and system based on ridge regression algorithm |
| CN112348701A (en) * | 2020-11-06 | 2021-02-09 | 贵州电网有限责任公司 | Method, device and system for processing power supply station line-to-user data and electronic equipment |
| CN113629719A (en) * | 2021-07-30 | 2021-11-09 | 广西电网有限责任公司电力科学研究院 | Low-voltage quality management and control system and method with high efficiency |
| CN113629719B (en) * | 2021-07-30 | 2024-06-21 | 广西电网有限责任公司电力科学研究院 | Low-voltage quality control efficient management and control system and method |
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