CN110601227A - Three-phase load unbalance adjusting system and method applied to power distribution network - Google Patents
Three-phase load unbalance adjusting system and method applied to power distribution network Download PDFInfo
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- CN110601227A CN110601227A CN201911063426.0A CN201911063426A CN110601227A CN 110601227 A CN110601227 A CN 110601227A CN 201911063426 A CN201911063426 A CN 201911063426A CN 110601227 A CN110601227 A CN 110601227A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a three-phase load unbalance adjusting system and method applied to a power distribution network, relating to the technical field of three-phase load unbalance adjustment of the power distribution network and comprising the following steps: a three-phase load unbalance adjusting system applied to a power distribution network comprises a main controller and a phase change switch group. This be applied to unbalanced three-phase load adjustment system of distribution network, can be through the unbalanced three-phase calculation module that sets up, each commutation switch branch road load calculation module and each branch road load balance calculation module, judge whether unbalanced three-phase current appears, then encrypt and RSA both way encryption with the information hull through the AES that sets up, improve data transmission's security, reuse each looks running state instruction module that sets up, the operating condition real-time detection of commutation switch of operating phase instruction module is through above-mentioned scheme, not only realize the monitoring unbalanced three-phase load of distribution network, and can make the adjustment to unbalanced three-phase load fast.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of three-phase load unbalance adjustment of a power distribution network, and relates to a three-phase load unbalance adjustment system and method applied to the power distribution network.
[ background of the invention ]
Three-phase unbalance indicates that three-phase current (or voltage) amplitude is inconsistent in the electric power system, and the amplitude difference exceeds the regulation scope, in the rural power grids power supply system of low pressure three-phase four-wire system, because the user is mostly single-phase load, load distribution is uneven and the high-power single-phase load power consumption's non-simultaneity for three-phase load is in unbalanced state, three-phase unbalance can cause circuit and transformer loss to increase, transmission capacity descends and transformer ageing aggravation or even overheat burning loss scheduling problem, can aggravate the low-voltage problem simultaneously.
The unbalanced three-phase load adjustment of the power distribution network utilizes a big data acquisition and analysis mode, the unbalanced three-phase load of the power distribution network can be rapidly monitored, the unbalanced three-phase load can be rapidly adjusted, the data loss phenomenon occurs in the transmission process of big data, the unbalanced three-phase load monitoring of the power distribution network is influenced, the unbalanced three-phase load cannot be timely adjusted, and therefore the unbalanced three-phase load adjustment system applied to the power distribution network is provided to solve the problems.
[ summary of the invention ]
The invention aims to make up for the defects of the prior art, provides a three-phase load imbalance adjusting system and method applied to a power distribution network, has the advantages of large data acquisition and data safe transmission of the power distribution network, and solves the problems that data are lost in the process of transmission of the large data of the power distribution network, the three-phase load imbalance of the power distribution network cannot be timely monitored, and the three-phase load imbalance cannot be timely adjusted.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a three-phase load imbalance adjustment system for use in a power distribution network, comprising:
the main controller comprises a switching power supply, a control panel power supply, a voltage detection circuit, a terminal strip, communication, GPRS (general packet radio service), other interfaces and a main control system;
the system comprises a master control system, a data acquisition module, a data acquisition; the master control system is in signal connection with the commutation system; the main control information acquisition module comprises a big data analysis module, node numbering and data acquisition of the intelligent power distribution network are carried out by utilizing a topological structure of the intelligent power distribution network system, the acquired information is stored through a storage unit in a matrix tensor product form, a three-dimensional multidimensional data system of the data is established, and data query and analysis are carried out on the stored data;
the phase change switch group comprises a phase change switch, a three-phase electrical interface, a trigger board, an external switching power supply and a phase change system, and the phase change switch group is connected with the master control system through the phase change system;
the commutation system comprises a commutation information acquisition module, a commutation control calculation module and a commutation communication module; and a big data safety protection module is arranged for data transmission between the master control communication module and the commutation communication module.
The invention further improves the following steps:
the master control communication module comprises a master control information receiving module and a master control information sending module, and the commutation communication module comprises a commutation information receiving module and a commutation information sending module.
The main control calculation module comprises three-phase imbalance calculation modules, phase change switch branch load calculation modules, branch load balance calculation modules, a main controller running state indication module and a fault information sending module which are mutually connected.
The commutation control calculation module comprises a logic control module, a thyristor contactor drive control module, operating state indication modules of all phases, a working phase indication module and a data uploading module which are mutually connected.
The outside of main control unit is provided with the control panel shell, the front of control shell is provided with sign district, pilot lamp district and manual district that sets up.
The commutation switch comprises a trigger plate, a thyristor, a contactor, a current transformer, a GPRS (general packet radio service) and a structural shell, wherein the front surface of the structural shell is provided with a mark area, an indicator lamp area and a manual setting area.
The commutation switch is provided with an output interface, and the output interface is electrically connected with an output connection user.
The power supply inlet of the switching power supply and the power supply inlet of the external switching power supply are both supplied with electricity from a distribution network, the rated voltage is 220V/50Hz, and the output is DC 24V.
The invention also discloses a three-phase load unbalance adjusting method applied to the power distribution network, which comprises the following steps:
step 1: the commutation system firstly utilizes the commutation control calculation module to filter and calculate the information acquired by the commutation information acquisition module, and then encrypts the filtered and calculated information by the set AES key;
step 2: after encrypting the AES key information through the set master control RSA public key, transmitting the information to a master control information receiving module;
and step 3: the master control information receiving module decrypts the received information through the set master control RSA key to obtain AES key information;
and 4, step 4: unlocking the transmitted correct information through the unlocked AES key information;
and 5: the master control system firstly encrypts the information of the result calculated by the master control calculation module through the set AES key;
step 6: after encrypting AES key information through the set commutation RSA public key, transmitting the information to a commutation information receiving module;
and 7: the commutation information receiving module decrypts the received information through the set commutation RSA key to obtain AES key information;
and 8: unlocking the transmitted correct instruction through the unlocked AES key information;
and step 9: and according to the correct unlocking instruction, the commutation system adjusts the three-phase load imbalance condition in time.
Compared with the prior art, the invention has the following beneficial effects:
the invention judges whether three-phase current imbalance occurs or not through the three-phase imbalance calculation module, the phase change switch branch load calculation module and the branch load balance calculation module, then carries out AES encryption and RSA bidirectional encryption on the information ship body through the arrangement, improves the safety of data transmission, and then utilizes the arrangement of the phase running state indication module and the working phase indication module to detect the working state of the phase change switch in real time, thereby not only realizing the monitoring of the three-phase load imbalance of the power distribution network, but also being capable of rapidly adjusting the three-phase load imbalance.
[ description of the drawings ]
FIG. 1 is a block diagram of a three-phase unbalanced load adjustment system according to the present invention;
FIG. 2 is a block diagram of a main control computing module according to the present invention;
FIG. 3 is a block diagram of a commutation control computation architecture according to the present invention;
FIG. 4 is a diagram of the main controller structure of the present invention;
FIG. 5 is a schematic diagram of a phase change switch according to the present invention;
FIG. 6 is a flow chart of the big data safeguard module according to the present invention.
In the figure: 1-a main controller; 2-a master control system; 3-a phase change switch group; 4-a commutation system; 5-a main control information acquisition module; 6-a main control calculation module; 7-a master control communication module; 8-commutation information acquisition module; 9-commutation control calculation module; 10-commutation communication module; 11-controller counter; 12-a three-phase imbalance calculation module; 13-each commutation switch branch load calculation module; 14-each branch load balance calculation module; 15-master controller running state indication module; 16-a fault information sending module; 17-a logic control module; 18-thyristor contactor drive control module; 19-each phase running state indication module; 20-a working phase indication module; 21-a data uploading module; 22-master control information receiving module; 23-a master control information sending module; 24-a commutation information receiving module; 25-commutation information sending module.
[ detailed description ] embodiments
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Various structural schematics according to the disclosed embodiments of the invention are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
In the context of the present disclosure, when a layer/element is referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present. In addition, if a layer/element is "on" another layer/element in one orientation, then that layer/element may be "under" the other layer/element when the orientation is reversed.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1-6, the three-phase load imbalance adjusting system applied to the power distribution network comprises a main controller 1 and a phase change switch group 3, wherein the main controller 1 comprises a switch power supply, a control panel power supply, a voltage detection circuit, a terminal strip, communication, GPRS, other interfaces and a main control system 2, a control panel shell is arranged outside the main controller 1, and a mark area, an indicator light area and a manual setting area are arranged on the front surface of the control shell.
The master control system 2 comprises a master control information acquisition module 5, a master control calculation module 6, a controller counter 11 and a master control communication module 7; the main control information acquisition module 5 comprises a big data analysis module, node numbering and data acquisition of the intelligent power distribution network are carried out by utilizing a topological structure of the intelligent power distribution network system, acquired information is stored through a storage unit in a matrix tensor product form, a three-dimensional multidimensional data system of data is established, and data query and analysis are carried out on the stored data. The main control calculation module 6 includes a three-phase imbalance calculation module 12, each commutation switch branch load calculation module 13, each branch load balance calculation module 14, a main controller operation state indication module 15, and a fault information transmission module 16.
The commutation switch group 3 comprises commutation switches, a three-phase electrical interface, a trigger board, an external switching power supply and a commutation system 4. The commutation switch comprises a trigger plate, a thyristor, a contactor, a current transformer, a GPRS (general packet radio service) and a structural shell, wherein the front surface of the structural shell is provided with an identification area, an indicator light area and a manual setting area. The phase change switch is provided with an output interface which is electrically connected with an output connection user. The power supply inlet of the switch power supply and the power supply inlet of the external switch power supply both take electricity from the distribution network, the rated voltage is 220V/50Hz, and the output is DC 24V.
The commutation system 4 comprises a commutation information acquisition module 8, a commutation control calculation module 9 and a commutation communication module 10, wherein the commutation control calculation module 9 comprises a logic control module 17, a thyristor contactor drive control module 18, a phase running state indication module 19, a working phase indication module 20 and a data uploading module 21. The main control system 2 is in signal connection with the commutation system 4; the data transmission between the master control communication module 7 and the commutation communication module 10 is provided with a big data safety protection module, the master control communication module 7 comprises a master control information receiving module 22 and a master control information sending module 23, and the commutation communication module 10 comprises a commutation information receiving module 24 and a commutation information sending module 25.
The invention relates to a three-phase load unbalance adjusting method applied to a power distribution network, which comprises the following steps:
step 1: the commutation system 4 firstly filters and calculates the information acquired by the commutation information acquisition module 8 by using the commutation control calculation module 9, and then encrypts the filtered and calculated information by using the set AES key;
step 2: after encrypting the AES key information by the set master RSA public key, the information is transmitted to the master information receiving module 22;
and step 3: the main control information receiving module 22 decrypts the received information through the set main control RSA key to obtain AES key information;
and 4, step 4: unlocking the transmitted correct information through the unlocked AES key information;
and 5: the master control system 2 firstly encrypts the information of the result calculated by the master control calculation module 6 through the set AES key;
step 6: after encrypting the AES key information by the set commutation RSA public key, the information is transmitted to the commutation information receiving module 24;
and 7: the commutation information receiving module 24 decrypts the received information by the set commutation RSA key to obtain AES key information;
and 8: unlocking the transmitted correct instruction through the unlocked AES key information;
and step 9: and according to the correct unlocking instruction, the commutation system 4 adjusts the three-phase load imbalance condition in time.
The working principle of the invention is as follows:
after power-on, the main control system 2 is initialized, the device self-checks, detects three-phase grid current, detects a grid voltage signal at the low-voltage side of a distribution transformer and three-phase output current of a distribution transformer by using the main control information acquisition module 5, judges whether three-phase current imbalance occurs by using the arranged three-phase imbalance calculation module 12, each commutation switch branch load calculation module 13 and each branch load balance calculation module 14, if the three-phase imbalance occurs, the commutation system 4 encrypts the information after filtering calculation by using the arranged AES key, encrypts the AES key information by using the arranged main control RSA public key, transmits the information to the main control information receiving module 22, the main control information receiving module 22 decrypts the received information by using the arranged main control RSA key to obtain the AES key information, and unlocks the transmitted correct information by using the unlocked AES key, the main control system 2 firstly encrypts the information of the result calculated by the main control calculation module 6 through the set AES key, encrypts the AES key information through the set commutation RSA public key, then transmits the information to the commutation information receiving module 24, the commutation information receiving module 22 decrypts the received information through the set commutation RSA key to obtain the AES key information, unlocks the correct transmission instruction through the unlocked AES key information, the commutation system 4 timely adjusts the three-phase load unbalance condition according to the unlocked correct instruction, closes the conduction phase in the commutation switch according to the default setting if the voltage is balanced, utilizes the set running state indication module 19 and the working phase indication module 20 of each phase to detect the working state of the commutation switch in real time, and passes through the set main controller running state indication module 15 and the fault information sending module 16, the current change conditions of the power grid and the load currents of the branch phases are detected in real time, the running state of the main controller 1 is monitored, and the three-phase current imbalance is generated, and then the three-phase current imbalance is adjusted according to a control strategy.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a three-phase unbalanced load adjustment system for distribution network which characterized in that includes:
the device comprises a main controller (1), wherein the main controller (1) comprises a switching power supply, a control panel power supply, a voltage detection circuit, a terminal strip, communication, GPRS (general packet radio service), other interfaces and a main control system (2);
the system comprises a main control system (2), wherein the main control system (2) comprises a main control information acquisition module (5), a main control calculation module (6), a controller counter (11) and a main control communication module (7); the master control system (2) is in signal connection with the commutation system (4); the main control information acquisition module (5) comprises a big data analysis module, node numbering and data acquisition of the intelligent power distribution network are carried out by utilizing a topological structure of the intelligent power distribution network system, the acquired information is stored through a storage unit in a matrix tensor product form, a three-dimensional multi-dimensional data system of data is established, and data query and analysis are carried out on the stored data;
the phase change switch group (3) comprises a phase change switch, a three-phase electrical interface, a trigger board, an external switch power supply and a phase change system (4), and the phase change switch group (3) is connected with the main control system (2) through the phase change system (4);
the phase change system (4), the phase change system (4) comprises a phase change information acquisition module (8), a phase change control calculation module (9) and a phase change communication module (10); and a big data safety protection module is arranged for data transmission between the master control communication module (7) and the commutation communication module (10).
2. The three-phase load unbalance adjustment system applied to the power distribution network according to claim 1, wherein the master control communication module (7) comprises a master control information receiving module (22) and a master control information sending module (23), and the commutation communication module (10) comprises a commutation information receiving module (24) and a commutation information sending module (25).
3. The three-phase load unbalance adjustment system applied to the power distribution network according to claim 1, wherein the master control calculation module (6) comprises a three-phase unbalance calculation module (12), each commutation switch branch load calculation module (13), each branch load balance calculation module (14), a master operation status indication module (15), and a fault information transmission module (16) which are mutually connected.
4. The three-phase load imbalance adjusting system applied to the power distribution network according to claim 1, wherein the commutation control calculating module (9) comprises a logic control module (17), a thyristor contactor driving control module (18), a phase operation state indicating module (19), a working phase indicating module (20) and a data uploading module (21) which are mutually connected.
5. The three-phase load unbalance adjustment system applied to the power distribution network according to claim 1, wherein a control panel housing is arranged outside the main controller (1), and a sign area, an indicator light area and a manual setting area are arranged on the front surface of the control housing.
6. The three-phase load unbalance adjustment system applied to the power distribution network according to claim 1, wherein the phase change switch comprises a trigger board, a thyristor, a contactor, a current transformer, a GPRS and a structural shell, and a mark area, an indicator light area and a manual setting area are arranged on the front surface of the structural shell.
7. The system of claim 1, wherein the phase-change switch is provided with an output interface, and the output interface is electrically connected to an output user.
8. The three-phase load imbalance adjusting system applied to the power distribution network of claim 1, wherein the power inlet of the switching power supply and the power inlet of the external switching power supply both take power from the power distribution network, the rated voltage is 220V/50Hz, and the output is DC 24V.
9. A method for adjusting three-phase load imbalance applied to a power distribution network using the system of claim 2, comprising the steps of:
step 1: the commutation system (4) firstly filters and calculates the information acquired by the commutation information acquisition module (8) by using the commutation control calculation module (9), and then encrypts the filtered and calculated information by using the set AES key;
step 2: after the AES key information is encrypted through the set master control RSA public key, the information is transmitted to a master control information receiving module (22);
and step 3: the main control information receiving module (22) decrypts the received information through the set main control RSA key to obtain AES key information;
and 4, step 4: unlocking the transmitted correct information through the unlocked AES key information;
and 5: the master control system (2) firstly encrypts the information of the result calculated by the master control calculation module (6) through the set AES key;
step 6: after the AES key information is encrypted through the set commutation RSA public key, the information is transmitted to a commutation information receiving module (24);
and 7: the commutation information receiving module (22) decrypts the received information through the set commutation RSA key to obtain AES key information;
and 8: unlocking the transmitted correct instruction through the unlocked AES key information;
and step 9: and according to the correct unlocking instruction, the commutation system (4) adjusts the three-phase load imbalance condition in time.
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| CN201911063426.0A CN110601227A (en) | 2019-10-31 | 2019-10-31 | Three-phase load unbalance adjusting system and method applied to power distribution network |
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| CN201911063426.0A CN110601227A (en) | 2019-10-31 | 2019-10-31 | Three-phase load unbalance adjusting system and method applied to power distribution network |
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| CN113098035A (en) * | 2021-04-09 | 2021-07-09 | 广东电网有限责任公司广州供电局 | Three-phase load unbalance adjusting method and device and distribution transformer side monitoring equipment |
| CN113128964A (en) * | 2021-04-20 | 2021-07-16 | 南方电网电力科技股份有限公司 | Power distribution station comprehensive energy management system based on AES encryption |
| CN113572263A (en) * | 2021-07-26 | 2021-10-29 | 山东康润电气股份有限公司 | Intelligent load scheduling circuit breaker based on Internet of things and Internet of things system thereof |
| CN114243901A (en) * | 2021-11-12 | 2022-03-25 | 国网浙江省电力有限公司杭州供电公司 | Urban power grid fault rapid response system and method |
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Application publication date: 20191220 |
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| RJ01 | Rejection of invention patent application after publication |