CN114024321B - Reactive voltage layering self-organizing control model and method for power distribution network - Google Patents

Abstract

The invention discloses a distribution network reactive power and voltage hierarchical self-organizing control model and method. The distribution network reactive voltage hierarchical self-organizing control model includes: a distribution network circuit data acquisition module, a verification module, and a distribution network intelligence module. Contract, distribution lines, and distribution equipment control modules. The method includes: collecting the voltage and current data of each distribution line in the medium and low voltage distribution network, bundling the certificate of the distribution line collection sensor with the voltage and current data and sending it to the verification module; verifying the authenticity of the received certificate through the verification node; The voltage and current data are packaged to generate a block broadcast and stored in each power distribution control node. The data is analyzed and processed to output the voltage adjustment value of the reactive power balance, and the reactive power and voltage adjustment instructions are sent; the verified data is packaged to generate a block and sent. To the distribution control node in the distribution line for storage; receive the reactive voltage adjustment instruction sent by the distribution control node, and execute the reactive voltage adjustment instruction.

Description

A hierarchical self-organizing control model and method for distribution network reactive power and voltage

Technical field

The present application relates to the technical field of reactive power and voltage control, and in particular to the technical field of hierarchical self-organizing control of reactive power and voltage in a distribution network.

Background technique

The reactive voltage problem of medium and low voltage distribution networks is crucial to reducing line losses and improving power supply quality.

In order to improve the voltage qualification rate, on-load voltage regulation, reactive power compensation and other methods are currently used to improve the voltage qualification rate. However, the existing centralized control method has poor self-organizing control performance, strong dependence on the communication network, and network security issues. Due to outstanding shortcomings, the reactive power and voltage control effect of medium and low voltage distribution is not ideal.

However, the emergence of blockchain technology with the characteristics of decentralization and high network security and reliability has provided new solutions to the shortcomings of centralized control methods and hidden data security risks. Blockchain is a distributed database that uses a series of data blocks related to cryptography. Each data block contains all data information in the past period of time. It can verify the validity of the information and generate blocks. By applying this technology to the reactive power and voltage control of the distribution network and utilizing the characteristics of blockchain technology, it can effectively solve the problem of poor self-organization control of the distribution network caused by the centralized approach, especially the problem of network security risks. .

Contents of the invention

This application provides a distribution network reactive power and voltage hierarchical self-organizing control model and method to solve the pressure of centralized reactive power compensation, thereby improving the flexibility of control equipment and improving the security of distribution network operation monitoring data. .

In the first aspect, this application provides a distribution network reactive power and voltage hierarchical self-organizing control model, including a distribution network circuit data collection module, a verification module, a distribution network smart contract, a distribution line, and a distribution equipment control module. ,in:

The distribution network circuit data acquisition module includes a number of distribution line acquisition sensors, which are used to collect the voltage and current data of each distribution line of the medium and low voltage distribution network, and combine the certificates of the distribution line acquisition sensors with the voltage , the current data is bundled and sent to the verification module;

The verification module includes a number of verification nodes, used to verify the authenticity of the certificate of the distribution line collection sensor and the integrity of the voltage and current data collected;

The distribution network smart contract is used to package the voltage and current data into blocks, broadcast and store them to the distribution control nodes in each distribution line; and automatically analyze the voltage and current data of the distribution line , the voltage adjustment value of the output reactive power balance;

The distribution line includes a plurality of the distribution control nodes, which are used to store the voltage and current data generated by packaging the voltage and current data verified by the distribution line acquisition sensor, and send reactive power and voltage adjustment instructions;

The power distribution equipment control module includes a number of distribution line transformers and distribution line capacitors, and is used to receive reactive voltage adjustment instructions sent by the power distribution control nodes and execute the reactive voltage adjustment instructions.

In one implementation, the distribution line in the distribution network circuit data acquisition module collects the certificate of the sensor, and performs registration in the verification module to obtain the registration certificate, which is stored in the verification node.

In one implementation, the verification module verifies the authenticity of the certificate of the distribution line collection sensor and the integrity of the collected voltage and current data through the verification node, including:

The certificate of the distribution line collection sensor shall be filed for secondary registration;

The registration certificate of the secondary registration is compared with the registration certificate stored inside the verification node. If the comparison result is consistent, it is qualified; if the comparison result is inconsistent, it is disqualified.

In one implementation, the distribution network smart contract packages the voltage and current data to generate blocks, broadcasts them to the nearest distribution control node of each of the distribution lines, and combines the voltage, current and voltage data into blocks. The blocks generated by current data packaging are synchronously sent to other control nodes of the distribution line.

In an implementation manner, between each two distribution lines, the closest distribution control node among the two distribution lines is responsible for the information coordination between each two distribution lines.

In one implementation, the power distribution control node stores the blocks generated by packaging the voltage and current data, and transmits the reactive power and voltage adjustment instructions sent by the distribution network smart contract to the distribution network. Control the distribution line transformer or distribution line capacitor in the electrical equipment control module.

In the second aspect, this application provides a hierarchical self-organizing control method for distribution network reactive power and voltage. The method is applied to any of the above-mentioned models, including:

Through the distribution line acquisition sensor in the distribution network circuit data acquisition module, the voltage and current data of each distribution line of the medium and low voltage distribution network are collected, and the certificate of the distribution line acquisition sensor is bundled with the voltage and current data. Send to verification module;

Verify the authenticity of the certificate of the distribution line collection sensor and the integrity of the voltage and current data collected through the verification node in the verification module;

The distribution network smart contract packages the voltage and current data into blocks, broadcasts and stores them to the distribution control nodes in each medium and low voltage distribution branch line; and automatically analyzes the voltage and current data of the distribution line, Output the voltage adjustment value of reactive power balance;

The blocks generated by packaging the voltage and current data verified by the distribution line collection sensor are stored through the distribution control node, and reactive voltage adjustment instructions are sent;

Through the distribution line transformer and distribution line capacitor in the power distribution equipment control module, the reactive voltage adjustment instruction sent by the power distribution control node is received, and the reactive voltage adjustment instruction is executed.

In one implementation, the received certificate of the distribution line collection sensor is verified through the verification node in the verification module to verify the authenticity of the certificate of the distribution line collection sensor, including:

Through the verification node in the verification module, the received certificate of the distribution line collection sensor is recorded for a second time;

The registration certificate of the secondary registration is compared with the registration certificate stored inside the verification node. If the comparison results are consistent, the verification will pass. If the comparison results are inconsistent, the verification will not pass.

In an implementation manner, if the distribution line collection sensor certificate verification fails, the voltage and current data sent by the distribution line collection sensor will be rejected to the distribution network circuit data collection module.

This application provides a distribution network reactive power and voltage hierarchical self-organizing control model and method, which integrates blockchain technology into power distribution by setting a verification module in the distribution network reactive power and voltage hierarchical self-organizing control system. Network reactive power and voltage control solves the pressure of centralized reactive power compensation, improves the flexibility of control equipment, and improves the security of distribution network operation monitoring data and other issues.

Description of the drawings

In order to explain the technical solutions of the present application more clearly, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without exerting creative efforts, Additional drawings can be obtained from these drawings.

Figure 1 is a schematic structural diagram of a distribution network reactive power and voltage hierarchical self-organizing control model provided by this application;

Figure 2 is a flow chart of a distribution network reactive power and voltage hierarchical self-organizing control method provided by this application.

Detailed ways

An embodiment will be described in detail below, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. are merely examples of systems and methods consistent with some aspects of the application as detailed in the claims.

It should be noted that the brief description of terms in this application is only to facilitate understanding of the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood according to their ordinary and usual meaning.

The terms "including" and "having" and any variations thereof in the description and claims of this application and the above-mentioned drawings are intended to cover but not exclusively include, for example, a product or device that includes a series of components and is not necessarily limited to clear All components not expressly listed may be included and other components not expressly listed or inherent to such products or devices may be included. The term "module" means any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic or combination of hardware or/and software code capable of performing the functions associated with that element.

This application discloses a distribution network reactive power and voltage hierarchical self-organizing control model. By setting a verification module in the distribution network reactive power and voltage hierarchical self-organizing control model, the blockchain technology is integrated into the distribution network wireless control model. Power and voltage control solves the pressure of centralized reactive power compensation, improves the flexibility of control equipment, and improves the security of distribution network operation monitoring data.

Refer to Figure 1, which is a schematic structural diagram of a distribution network reactive power and voltage hierarchical self-organizing control model of the present application. This application provides a distribution network reactive power and voltage hierarchical self-organizing control model, including a distribution network circuit data collection module, a verification module, a distribution network smart contract, a distribution line, and a distribution equipment control module, including:

The distribution network circuit data acquisition module includes a number of distribution line acquisition sensors, which are used to collect the voltage and current data of each distribution line of the medium and low voltage distribution network, and combine the certificates of the distribution line acquisition sensors with the voltage , the current data is bundled and sent to the verification module;

The verification module includes a number of verification nodes, used to verify the authenticity of the certificate of the distribution line collection sensor and the integrity of the voltage and current data collected;

The distribution network smart contract is used to package the voltage and current data into blocks, broadcast and store them to the distribution control nodes in each distribution line; and automatically analyze the voltage and current data of the distribution line , the voltage adjustment value of the output reactive power balance;

The distribution line includes a plurality of the distribution control nodes, which are used to store the voltage and current data generated by packaging the voltage and current data verified by the distribution line acquisition sensor, and send reactive power and voltage adjustment instructions;

The power distribution equipment control module includes a number of distribution line transformers and distribution line capacitors, and is used to receive reactive voltage adjustment instructions sent by the power distribution control nodes and execute the reactive voltage adjustment instructions.

Exemplarily, the distribution network circuit data acquisition module is composed of voltage and current acquisition sensors of the medium and low voltage distribution network branches, collects the voltage and current data of each distribution line of the medium and low voltage distribution network, and sends it to the verification module; The verification module is composed of a cluster of verification nodes to verify the authenticity of the certificates of the sensors that collect circuit data; the distribution network smart contract is composed of preset programs, packages the collected voltage and current data to generate blocks, broadcasts and stores them to The distribution control nodes in each medium and low voltage distribution branch line analyze and process voltage and current data, output the voltage adjustment value of reactive power balance, and issue reactive voltage adjustment instructions; the distribution lines are formed by each distribution control node, The power distribution control node serves as the carrier of information transmission and storage with the smallest granularity. The power distribution control branches communicate through the power distribution control node. The power distribution equipment control module is composed of a transformer and a capacitor equipped with the ability to receive adjustment instructions. The power distribution control node receives Send the adjustment instructions and execute the adjustment instructions.

In some embodiments, the distribution line in the distribution network circuit data acquisition module collects the certificate of the sensor, and performs registration in the verification module to obtain the registration certificate, which is stored in the verification node.

Exemplarily, the certificate of each sensor in the distribution network circuit data collection module is registered in the verification module, and the registration certificate is stored in each verification node as a data storage certificate. Further, the verification node information sent by the distribution line collection sensor in the distribution network circuit data collection module to the verification module includes the distribution line collection sensor certificate and the collected voltage and current information of the node.

In some embodiments, the verification module verifies the authenticity of the certificate of the distribution line collection sensor and the integrity of the collected voltage and current data through the verification node, including:

The certificate of the distribution line collection sensor shall be filed for secondary registration;

The registration certificate of the secondary registration is compared with the registration certificate stored inside the verification node. If the comparison result is consistent, it is qualified; if the comparison result is inconsistent, it is disqualified.

Exemplarily, the verification method of the verification module is to record the certificate sent by the distribution line collection sensor again through the verification node, and compare it with the record certificate stored in the verification node. The comparison result is consistent with Qualified, otherwise it is unqualified.

In some embodiments, the distribution network smart contract packages the voltage and current data to generate blocks, broadcasts them to the nearest distribution control node of each of the distribution lines, and converts the voltage and current data into blocks. The blocks generated by data packaging are synchronously sent to other control nodes of the distribution line.

In some embodiments, between each two distribution lines, the closest distribution control node among the two distribution lines is responsible for information coordination between each two distribution lines.

In some embodiments, the power distribution control node stores the blocks generated by packaging the voltage and current data, and transmits the reactive voltage adjustment instructions sent by the distribution network smart contract to the power distribution network. The distribution line transformer or distribution line capacitor in the equipment control module is regulated.

Furthermore, this application also discloses a hierarchical self-organizing control method of reactive power and voltage of distribution network, which is applied to any of the above models. As shown in Figure 2, the specific steps include:

S1, collect the voltage and current data of each distribution line of the medium and low-voltage distribution network through the distribution line collection sensor in the distribution network circuit data collection module, and combine the certificate of the distribution line collection sensor with the voltage and current The data is bundled and sent to the verification module;

In some embodiments, the distribution line collection sensor in the distribution network circuit data collection module collects voltage and current data of the distribution network circuit every 15 minutes, and the certificate of the distribution line collection sensor is compared with The voltage and current data information is bundled and sent to the verification module.

S2, verify the authenticity of the certificate of the distribution line collection sensor and the integrity of the voltage and current data collected through the verification node in the verification module;

Exemplarily, based on the verification node in the verification module in the blockchain network, the certificate sent and the certificate registered by the distribution line sensor are verified, and the verification node that passes the verification is sent by the distribution line collection sensor. The blocks generated by packaging the voltage and current data are stored in the power distribution control node, otherwise they will be rejected.

S3, the distribution network smart contract packages the voltage and current data to generate blocks, broadcasts and stores them to the distribution control nodes in each medium and low voltage distribution branch; and automatically analyzes the voltage and current of the distribution line Data, output the voltage adjustment value of reactive power balance;

Exemplarily, the distribution network smart contract analyzes and processes the voltage and current data stored in each distribution control node, then outputs the reactive voltage parameter adjustment value of each control node, and issues adjustment instructions to the distribution network. In the wire line.

S4. Pack and generate blocks of voltage and current data that have been verified by the distribution line collection sensor and store them through the distribution control node, and send reactive power and voltage adjustment instructions;

Exemplarily, several power distribution control nodes in the distribution line store the voltage and current data that have been verified by the distribution line collection sensors.

S5: Receive the reactive voltage adjustment instruction sent by the distribution control node through the distribution line transformer and distribution line capacitor in the distribution equipment control module, and execute the reactive voltage adjustment instruction.

Exemplarily, the distribution control node in the distribution line sends the received reactive power voltage adjustment instruction to the adjacent power distribution equipment control module, and the power distribution equipment control module responds to the received reactive power and voltage adjustment instruction. The reactive voltage adjustment instruction information adjusts the gear position of the distribution line transformer and the capacitance switching of the distribution line capacitor to meet the reactive voltage adjustment needs of the distribution network.

Exemplarily, the verification node in the verification module compares and verifies the certificate of the distribution line sensor sent with the registration certificate, and the blocks generated by the data package that pass the verification are stored in the power distribution control node, Otherwise, it will be rejected; then, the voltage and current data stored in each power distribution control node are analyzed and processed through the distribution network smart contract, the voltage control parameter value of each power distribution control node is output, and the adjustment is issued. instruction; the power distribution control node sends the adjustment instruction to the nearest power distribution equipment control module; the power distribution equipment control module receives the adjustment information, and adjusts the power of the distribution line transformer based on the adjustment information. The gear position is switched with the capacitance of the distribution line capacitor, and the entire distribution network control equipment adjusts the reactive voltage according to the received information to balance the reactive power.

In some embodiments, the received certificate of the distribution line collection sensor is verified through the verification node in the verification module to verify the authenticity of the certificate of the distribution line collection sensor, including:

Through the verification node in the verification module, the received certificate of the distribution line collection sensor is recorded for a second time;

The registration certificate of the secondary registration is compared with the registration certificate stored inside the verification node. If the comparison results are consistent, the verification will pass. If the comparison results are inconsistent, the verification will not pass.

In some embodiments, if the distribution line collection sensor certificate verification fails, the voltage and current data sent by the distribution line collection sensor will be rejected to the distribution network circuit data collection module.

It can be seen from the above technical solutions that the distribution network reactive power and voltage hierarchical self-organizing control method provided by this application is based on the blockchain network, and applies the blockchain technology to the field of distribution network reactive power compensation, solving central problems. In order to eliminate the high pressure of reactive power compensation, poor compensation effect, and the security of distribution network operation data, it can perform reactive power balancing in a timely and dynamic manner, improve the voltage qualification rate, and reduce the security of distribution network operation data. User complaint rate.

Reference throughout this specification to "embodiments," "some embodiments," "one embodiment," or "an embodiment," etc., means that a specific feature, component, or characteristic described in connection with the embodiment is included in at least In one embodiment, therefore, the phrases "in various embodiments," "in some embodiments," "in at least one other embodiment," or "in an embodiment," etc., appear throughout this specification, and Not necessarily all referring to the same embodiment. Furthermore, particular features, components, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, without limitation, a particular feature, component, or characteristic shown or described in connection with one embodiment may be combined, in whole or in part, with features, components, or characteristics of one or more other embodiments. Such modifications and variations are intended to be included within the scope of this application.

Similar parts between the embodiments provided in this application can be referred to each other. The specific implementations provided above are just a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other embodiments extended based on the solution of this application without any creative effort shall fall within the protection scope of this application.

Claims (6)

1. The utility model provides a distribution network reactive voltage layering self-organizing control model which characterized in that, including distribution network circuit data acquisition module, verification module, distribution network intelligent contract, distribution line, distribution equipment regulation and control module, wherein:

the distribution network circuit data acquisition module comprises a plurality of distribution line acquisition sensors and is used for acquiring voltage and current data of each distribution line of the low-voltage distribution network, and binding certificates of the distribution line acquisition sensors with the voltage and current data and sending the certificates to the verification module;

the verification module comprises a plurality of verification nodes and is used for verifying authenticity of a certificate of the distribution line acquisition sensor and integrity of acquisition of the voltage and current data;

the intelligent contract of the power distribution network is used for packaging the voltage and current data to generate blocks, broadcasting and storing the blocks to power distribution regulation nodes in each power distribution line; automatically analyzing the voltage and current data of the distribution line and outputting a voltage regulation value of reactive power balance;

the distribution line comprises a plurality of distribution regulation nodes and is used for storing blocks generated by packaging the voltage and current data which are verified by the distribution line acquisition sensor and sending reactive voltage regulation instructions;

the distribution equipment regulation and control module comprises a plurality of distribution line transformers and distribution line capacitors, and is used for receiving reactive voltage regulation instructions sent by the distribution regulation and control nodes and executing the reactive voltage regulation instructions;

the verification module verifies the authenticity of the certificate of the distribution line acquisition sensor and the integrity of the acquired voltage and current data through the verification node, and the verification module comprises the following steps:

carrying out secondary record on the certificate of the distribution line acquisition sensor;

comparing the secondary recorded certificate with the recorded certificate stored in the verification node, wherein the comparison result is qualified if the comparison result is consistent, and the comparison result is unqualified if the comparison result is inconsistent;

the intelligent contract of the power distribution network packs the voltage and current data to generate blocks, broadcasts the blocks to power distribution regulation nodes closest to each power distribution line, and synchronously transmits the blocks generated by packing the voltage and current data to other regulation nodes of the power distribution lines;

and the information cooperation between every two distribution lines is born by the nearest distribution regulation node in the two distribution lines.

2. The power distribution network reactive voltage hierarchical self-organizing control model according to claim 1, wherein a distribution line in the power distribution network circuit data acquisition module acquires a certificate of a sensor, a record is made in the verification module, and a record certificate is obtained and stored in the verification node.

3. The power distribution network reactive voltage hierarchical self-organizing control model according to claim 1, wherein the power distribution regulation and control node stores blocks generated by packaging the voltage and current data, and transmits reactive voltage regulation instructions sent by the power distribution network intelligent contract to a distribution line transformer or a distribution line capacitor in the power distribution equipment regulation and control module for regulation and control.

4. A method for hierarchical self-organizing reactive voltage control of a power distribution network, applied to the model of any one of claims 1-3, comprising the steps of:

collecting voltage and current data of each distribution line of a medium-low voltage distribution network through a distribution line collecting sensor in a distribution network circuit data collecting module, and binding a certificate of the distribution line collecting sensor with the voltage and current data and sending the certificate to a verification module;

verifying authenticity of the received certificate of the distribution line acquisition sensor and integrity of the acquired voltage and current data through a verification node in a verification module;

the intelligent contract of the distribution network packs the voltage and current data to generate blocks, and broadcasts and stores the blocks to distribution regulation nodes in each medium-low voltage distribution branch line; automatically analyzing the voltage and current data of the distribution line and outputting a voltage regulation value of reactive power balance;

storing a block generated by packaging voltage and current data which pass verification of the distribution line acquisition sensor through a distribution regulation node, and sending a reactive voltage regulation instruction;

and receiving a reactive voltage regulation instruction sent by the distribution regulation node through a distribution line transformer and a distribution line capacitor in a distribution equipment regulation module, and executing the reactive voltage regulation instruction.

5. The method for hierarchical self-organizing reactive voltage control of a power distribution network according to claim 4, wherein verifying authenticity of the received certificate of the power distribution line collecting sensor through a verification node in a verification module comprises:

the received certificate of the distribution line acquisition sensor is subjected to secondary record through a verification node in the verification module;

and comparing the recorded certificate of the secondary recorded with the recorded certificate stored in the verification node, wherein the verification is passed if the comparison result is consistent, and the verification is failed if the comparison result is inconsistent.

6. The method for hierarchical self-organizing reactive voltage control of a power distribution network according to claim 5, wherein if the certificate verification of the power distribution line acquisition sensor is not passed, voltage and current data sent by the power distribution line acquisition sensor are rejected to the power distribution network circuit data acquisition module.