System of power distribution network one-line one-case optimization analysis method based on precise modeling

Abstract

The invention discloses a system of a power distribution network one-line one-case optimization analysis method based on precise modeling, which comprises a subarea power supply bureau data center, and the subarea power supply bureau data center adopts a graph-model integrated method to establish a subarea power grid topological structure according to the geographic position of a user. And after the data center of the zonal power supply bureau sends a data acquisition instruction of the specified power grid topology point to the data acquisition device, the natural village power distribution network enters a to-be-called state after the data acquisition instruction of the specified power grid topology point is sent by the data center of the zonal power supply bureau to the data acquisition device. Automatic connection of the natural village power distribution network and the acquisition device is achieved, data acquisition efficiency is improved, in the Bluetooth circuit, the output current of a voltage stabilization chip is improved through a triode, the power of a receiving and transmitting circuit is improved, the Bluetooth receiving and transmitting range can be widened, and the output voltage of the voltage stabilization chip can be adjusted through an adjustable resistor.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution networks, and particularly relates to a system for optimizing and analyzing one line and one case of a distribution network based on accurate modeling. Background Art

[0002] At present, the scale of the power grid in China is continuously expanding, which leads to an increase in the average load loss that may be caused by each power outage fault. Therefore, improving the reliability prediction algorithm, optimizing the reliability modeling method, enhancing the power grid reliability, and ensuring the emergency and safe operation of the power grid have become urgent problems faced by the current operation of the distribution network.

[0003] The calculation model of the traditional prediction correlation analysis method is as follows: . Wherein, is the system reliability index in the t-th year, and i = 1, 2, which are respectively the average number of power outages per user AITC-1 (times / user) and the average power outage time per user AIHC-1 (hours / user); , j = 1, 2,..., respectively corresponding to the power grid characteristic parameters in the t-th year in the fuzzy modeling data; , j = 1, 2,..., represents the planned capital amount data in the t-th year, and are undetermined coefficients.

[0004] According to and the contradiction equations composed of the historical data of each year, the undetermined coefficients in the reliability prediction model are solved. Since the average power supply availability RS-1 index can be directly deduced from the AIHC-1 index, it is not used as a prediction object. The undetermined coefficients are solved by the regression analysis method. After the solution is completed, according to the planned power grid data and planned outage data of the year to be predicted, they are respectively substituted into the above equations, and the reliability index of the predicted year can be obtained. If the reliability prediction fuzzy modeling algorithm needs to be improved into accurate modeling, a large amount of data collection by staff is required, and the collection method is the traditional on-site data registration, and the data needs to be collected cyclically at regular intervals, which increases the operation cost of the distribution network. Summary of the Invention

[0005] In order to overcome the above deficiencies, the present invention provides a system for optimizing and analyzing one line and one case of a distribution network based on accurate modeling.

[0006] The present invention achieves the above object through the following technical solutions: A system for optimizing and analyzing one line and one case of a distribution network based on accurate modeling, including The data center of the sub - district power supply bureau adopts the method of integrating graphics and models. It establishes the topological structure of the power grid in this sub - district according to the geographical location of users, and then calculates the topological points of the power grid that need to collect data in the topological structure of this sub - district power grid according to the reliability prediction algorithm of the distribution network; The data acquisition device, which includes a touch screen, a CPU, a Bluetooth module, a communication module and a power module. The CPU is electrically connected to the communication module and the Bluetooth module respectively. There is a signal transmission module between the CPU and the touch screen. The power module provides voltage for each module in the data acquisition device. The data acquisition device is used to receive the instructions from the data center of the sub - district power supply bureau, collect data for the specified power grid topological points, and the staff can update the on - site data and upload the data; The distribution network of natural villages, which includes a distribution cabinet. The distribution cabinet is communicatively connected to the data center of the sub - district power supply bureau and wirelessly connected to the data acquisition device; The user electricity meter, which is communicatively connected to the distribution cabinet and wirelessly connected to the data acquisition device; Among them, after the data center of the sub - district power supply bureau sends the data acquisition instruction for the specified power grid topological point to the data acquisition device, the data center of the sub - district power supply bureau will synchronously send an instruction to the distribution network of natural villages. The distribution network of natural villages enters the waiting - for - call state, that is, the Bluetooth module in the distribution network of natural villages will perform automatic matching connection. When the staff holds the data acquisition device close, the automatic connection between the distribution network of natural villages and the acquisition device will be realized.

[0007] Preferably, the Bluetooth module in the data acquisition device includes a Bluetooth circuit, which includes a current boosting circuit and a transceiver circuit. The current boosting circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a variable resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a triode, a diode, and a voltage regulator chip. The model of the voltage regulator chip is 7805. The input end of the voltage regulator chip is electrically connected to the output end of the power supply module. The input end of the voltage regulator chip is grounded through the first capacitor and the second capacitor respectively. The input end of the voltage regulator chip is electrically connected to the base of the triode through the second resistor. The input end of the voltage regulator chip is electrically connected to the emitter of the triode and the cathode of the diode through the first resistor respectively. The triode is a PNP triode. The collector of the triode is electrically connected to the output end of the voltage regulator chip. The anode of the diode is electrically connected to the output end of the voltage regulator chip through the fourth resistor. The ground terminal of the voltage regulator chip is grounded through the fifth capacitor. The output end of the voltage regulator chip is grounded through the third resistor and the variable resistor. The output end of the voltage regulator chip is grounded through the third capacitor and the fourth capacitor respectively. The adjustable end of the variable resistor is grounded. The transceiver circuit includes an integrated circuit, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a crystal oscillator, a first bead, a second bead, and an antenna. The model of the integrated circuit is CH9141. The power supply terminal of the integrated circuit is electrically connected to the output end of the voltage regulator chip. The eighteenth terminal of the integrated circuit is electrically connected to the nineteenth terminal of the integrated circuit through the crystal oscillator. The twenty-first terminal of the integrated circuit is electrically connected to the antenna. The twentieth terminal of the integrated circuit is grounded through the ninth capacitor. The fifth terminal of the integrated circuit is grounded through the eighth capacitor. The twenty-second terminal of the integrated circuit is grounded through the seventh terminal. The twenty-second terminal of the integrated circuit is electrically connected to the fourth terminal of the integrated circuit through the first bead and the second bead. The third terminal of the integrated circuit is electrically connected to the first bead and the second bead respectively. The third terminal of the integrated circuit is grounded through the sixth capacitor. In this Bluetooth circuit, the transceiver circuit can realize the conventional Bluetooth signal transceiver work. However, when facing some special occasions, such as when the distribution cabinet or the electric meter is at a high position, the signal transceiver is prone to instability. At this time, it is necessary to increase the output power of the Bluetooth circuit. In the current boosting circuit, the triode can increase the output current of the voltage regulator chip to increase the power of the transceiver circuit. At the same time, the variable resistor can adjust the output voltage of the voltage regulator chip. In a normal working environment, there is no need for the transceiver circuit to increase power, thus increasing the service life of the entire Bluetooth module.

[0008] Preferably, after the district power supply bureau data center collects the feedback data of the data acquisition device and the natural village distribution network, it performs the calculation of the distribution network reliability prediction algorithm, and then transmits the data obtained after data measurement to the data acquisition device, which is used by the staff for on-site construction or returns, thereby realizing the function of one case for one line of the distribution network and enabling on-site processing.

[0009] Preferably, the sub-region power supply bureau data center establishes the topological structure of the sub-region power grid according to the geographical location of users. Meanwhile, it also sends the navigation positioning of the specified power grid topological points and satellite cloud maps to the data acquisition device. Then, the staff can search for the specified power grid topological points according to the navigation positioning. At the same time, the geographical locations of the entire surrounding area of the specified power grid topological points can be observed through the satellite cloud maps, providing support for subsequent work.

[0010] Preferably, the data acquisition device exchanges data with the distribution network of natural villages. When the staff collects data from the user electricity meters next, the distribution network of natural villages synchronously sends the user electricity meters, and the user electricity meters enter the waiting-to-be-called state.

[0011] Preferably, when the distribution network of natural villages and the user electricity meters cannot enter the waiting-to-be-called state, that is, when the staff cannot perform automatic matching through the data acquisition device, the data acquisition device and the distribution network of natural villages or the user electricity meters can be communicatively connected through a network cable interface. Each distribution network of natural villages or user electricity meter is equipped with a network interface. When the staff discovers that the Bluetooth function of the distribution network of natural villages or the user electricity meter fails, data communication transmission can be carried out through the network interface.

[0012] Preferably, after the distribution network of natural villages exchanges and updates data with the data acquisition device, it transmits the updated data to the sub-region power supply bureau data center. Similarly, after the user electricity meters exchange and update data with the data acquisition device, they transmit the updated data to the distribution network of natural villages. When the data of the distribution network of natural villages or the user electricity meters is uploaded, the data acquisition device synchronously updates and uploads the data, which can verify the stability and reliability of the data transmission of the distribution network of natural villages or the user electricity meters.

[0013] The beneficial effects of the present invention are as follows: In the system of the optimization analysis method for the first-line and one-case of the distribution network based on precise modeling: 1. Adopting the method of integrating graphics and models, the navigation positioning of the specified power grid topological points and satellite cloud maps are sent to the data acquisition device. Then, the staff can search for the specified power grid topological points according to the navigation positioning. At the same time, the geographical locations of the entire surrounding area of the specified power grid topological points can be observed through the satellite cloud maps, providing support for subsequent work; 2. After the sub-region power supply bureau data center sends the data acquisition instruction of the specified power grid topological points to the data acquisition device, the distribution network of natural villages enters the waiting-to-be-called state, realizing the automatic connection between the distribution network of natural villages and the acquisition device, improving the efficiency of data acquisition; 3. In the Bluetooth circuit, the output current of the voltage regulator chip is increased through a triode to increase the power of the transceiver circuit, thereby improving the Bluetooth transceiver range. The output voltage of the voltage regulator chip can be adjusted through a variable resistor. In a normal working environment, there is no need for the transceiver circuit to increase power, thus extending the service life of the entire Bluetooth module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be described by way of examples with reference to the accompanying drawings, where: Figure 1 is the system structure diagram of the present invention; Figure 2 is the operating principle diagram of the present invention; Figure 3 is the circuit schematic diagram of the Bluetooth circuit of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention. Embodiment

[0016] As Figure 1 and Figure 2 shown, it is a preferred embodiment of the present invention. A system for an optimized analysis method of one line and one case for a distribution network based on precise modeling includes The data center of the sub - district power supply bureau. The data center of the sub - district power supply bureau adopts the method of integrating graphics and models. According to the geographical location of users, the topological structure of the power grid in this sub - district is established. Then, based on the statistical data of the power distribution network reliability prediction algorithm, the power grid topological points that need to collect data in this sub - district power grid topological structure are calculated, thus meeting the requirements of one line and one case for the distribution network.

[0017] The data acquisition device. The data acquisition device includes a touch screen, a CPU, a Bluetooth module, a communication module, and a power supply module. The CPU is electrically connected to the communication module and the Bluetooth module respectively. There is a signal transmission module between the CPU and the touch screen. The power supply module provides voltage for each module in the data acquisition device. The data acquisition device is used to receive instructions from the data center of the sub - district power supply bureau, collect data for specified power grid topological points, and the staff can update on - site data and upload data, thus enabling precise modeling to meet the optimized analysis of one line and one case for the distribution network.

[0018] The distribution network of natural villages. The distribution network of natural villages includes a distribution cabinet, which is communicatively connected to the data center of the sub - district power supply bureau and wirelessly connected to the data acquisition device; User electric meter. The user electric meter is communicatively connected to the power distribution cabinet, so that real-time data transmission is carried out between the user electric meter and the power distribution cabinet. The power distribution cabinet transmits the electricity consumption information of each user in the distribution network of this natural village to the data center of the sub-district power supply bureau. The user electric meter is wirelessly connected to the data acquisition device, enabling the staff to remotely update and transmit data to the user electric meter. Among them, after the data center of the sub-district power supply bureau sends a data acquisition instruction for a specified grid topology point to the data acquisition device, the data center of the sub-district power supply bureau will synchronously send an instruction to the distribution network of the natural village, and the distribution network of the natural village will enter the waiting-to-be-called state, that is, the Bluetooth module in the distribution network of the natural village will perform automatic matching and connection. When the staff holds the data acquisition device close, automatic connection between the distribution network of the natural village and the acquisition device will be achieved.

[0019] Specific embodiment. After the data center of the sub-district power supply bureau collects the feedback data of the data acquisition device and the distribution network of the natural village, it performs calculations using the power distribution network reliability prediction algorithm, and then transmits the data obtained after data measurement to the data acquisition device, and the staff can carry out on-site construction or return, thereby realizing the function of one case for one line of the power distribution network and enabling on-site processing.

[0020] Specific embodiment. The data center of the sub-district power supply bureau establishes the grid topology structure of this sub-district according to the user's geographical location, and will also synchronously send the navigation positioning of the specified grid topology point and the satellite cloud map to the data acquisition device. The staff can search for the specified grid topology point according to the navigation positioning, and at the same time, the entire surrounding geographical location of the specified grid topology point can be observed through the satellite cloud map to provide support for later work.

[0021] Specific embodiment. When the data acquisition device exchanges data with the distribution network of the natural village, when the staff next collects data from the user electric meter, the distribution network of the natural village synchronously sends data to the user electric meter, and the user electric meter enters the waiting-to-be-called state.

[0022] Specific embodiment. When the distribution network of the natural village and the user electric meter cannot enter the waiting-to-be-called state, that is, when the staff cannot perform automatic matching through the data acquisition device, communication connection can be carried out between the data acquisition device and the distribution network of the natural village or the user electric meter through a network interface. Each distribution network of the natural village or user electric meter is provided with a network interface. When the staff discovers that the Bluetooth function of the distribution network of the natural village or the user electric meter fails, data communication transmission can be carried out through the network interface.

[0023] In a specific embodiment, after the data exchange and update between the distribution network of the natural village and the data acquisition device, the updated data is transmitted to the data center of the district power supply bureau. Similarly, after the data exchange and update between the user electricity meter and the data acquisition device, the updated data is transmitted to the distribution network of the natural village. When the data of the distribution network of the natural village or the user electricity meter is uploaded, the data acquisition device performs synchronous data update and upload, which can verify the stability and reliability of the data transmission of the distribution network of the natural village or the user electricity meter.

[0024] Such as Figure 3As shown, the Bluetooth module in the data acquisition device includes a Bluetooth circuit, the Bluetooth circuit includes a current expansion circuit and a transceiver circuit, the current expansion circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, an adjustable resistor RP1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a transistor Q1, a diode D1 and a voltage regulator chip U1, the voltage regulator chip U1 model is 7805, the input end of the voltage regulator chip U1 is electrically connected to the output end of the power module, and the input end of the voltage regulator chip U1 is respectively connected to the output end of the power module through the first The capacitor C1 and the second capacitor C2 are grounded, the input end of the voltage stabilizing chip U1 is electrically connected to the base of the transistor Q1 through the second resistor R2, the input end of the voltage stabilizing chip U1 is electrically connected to the emitter of the transistor Q1 and the cathode of the diode D1 through the first resistor R1, the transistor Q1 is a PNP transistor Q1, the collector of the transistor Q1 is electrically connected to the output end of the voltage stabilizing chip U1, the anode of the diode D1 is electrically connected to the output end of the voltage stabilizing chip U1 through the fourth resistor R4, the ground end of the voltage stabilizing chip U1 is grounded through the fifth capacitor C5, and the output end of the voltage stabilizing chip U1 is connected to the ground. The output end of the voltage stabilizing chip U1 is grounded through the third resistor R3 and the adjustable resistor RP1, the output end of the voltage stabilizing chip U1 is grounded through the third capacitor C3 and the fourth capacitor C4 respectively, the adjustable end of the adjustable resistor RP1 is grounded, the transceiver circuit includes an integrated circuit U2, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a crystal oscillator X1, a first magnetic bead L1, a second magnetic bead L2 and an antenna E1, the model of the integrated circuit U2 is CH9141, the power supply end of the integrated circuit U2 is electrically connected to the output end of the voltage stabilizing chip U1, and the eighteenth end of the integrated circuit U2 is connected to the integrated circuit through the crystal oscillator X1. The nineteenth terminal of the circuit U2 is electrically connected, the twenty-first terminal of the integrated circuit U2 is electrically connected to the antenna E1, the twentieth terminal of the integrated circuit U2 is grounded through the ninth capacitor C9, the fifth terminal of the integrated circuit U2 is grounded through the eighth capacitor C8, the twenty-second terminal of the integrated circuit U2 is grounded through the seventh terminal, the twenty-second terminal of the integrated circuit U2 is electrically connected to the fourth terminal of the integrated circuit U2 through the first magnetic bead L1 and the second magnetic bead L2, the third terminal of the integrated circuit U2 is electrically connected to the first magnetic bead L1 and the second magnetic bead L2 respectively, and the third terminal of the integrated circuit U2 is grounded through the sixth capacitor C6. In this Bluetooth circuit, conventional Bluetooth signal transceiving can be achieved through the transceiver circuit, but when facing some special occasions, such as when the power distribution cabinet or the electric meter is at a high position, it is easy to cause unstable signal transceiving. At this time, it is necessary to increase the output power of the Bluetooth circuit, and in the current expansion circuit, the output current of the voltage regulator chip U1 can be increased by the transistor Q1 to increase the power of the transceiver circuit, and the output voltage of the voltage regulator chip U1 can be adjusted by the adjustable resistor RP1. Under normal working conditions, there is no need to increase the power of the transceiver circuit, thereby increasing the service life of the entire Bluetooth module.

[0025] Based on the inspiration of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A system for optimizing and analyzing a distribution network based on precise modeling, characterized by: include The data center of the sub-district power supply bureau adopts the method of graph-model integration to establish the sub-district power grid topology structure according to the user's geographical location, and then calculates the power grid topology points that need to be collected in the sub-district power grid topology structure based on the statistical data of the distribution network reliability prediction algorithm; The data acquisition device includes a touch screen, a CPU, a Bluetooth module, a communication module and a power module. The CPU is electrically connected to the communication module and the Bluetooth module respectively. A signal transmission module is provided between the CPU and the touch screen. The power module provides voltage to each module in the data acquisition device. The data acquisition device is used to receive instructions from the data center of the sub-district power supply bureau, collect data for designated power grid topology points, and the staff performs on-site data update and data upload; A natural village power distribution network, wherein the natural village power distribution network includes a power distribution cabinet, the power distribution cabinet is communicatively connected to a data center of a sub-district power supply bureau, and the power distribution cabinet is wirelessly connected to a data acquisition device; A user electric meter, wherein the user electric meter is communicatively connected to the power distribution cabinet, and the user electric meter is wirelessly connected to the data acquisition device; Among them, after the data center of the sub-district power supply bureau sends the data collection instruction of the designated power grid topology point to the data collection device, the data center of the sub-district power supply bureau will simultaneously send instructions to the natural village distribution network, and the natural village distribution network will enter the waiting state, that is, the Bluetooth module in the natural village distribution network will automatically match and connect. When the staff holds the data collection device close, the natural village distribution network and the collection device will be automatically connected.

2. The system of the power distribution network one-line-one-case optimization analysis method based on accurate modeling according to claim 1 is characterized by: The Bluetooth module in the data acquisition device includes a Bluetooth circuit, which includes a current expansion circuit and a transceiver circuit. The current expansion circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, an adjustable resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a transistor, a diode and a voltage stabilizing chip. The voltage stabilizing chip model is 7805. The input end of the voltage stabilizing chip is electrically connected to the output end of the power module. The input end of the voltage stabilizing chip is grounded through the first capacitor and the second capacitor respectively. The input end of the voltage stabilizing chip is electrically connected to the base of the transistor through the second resistor. The input end of the voltage stabilizing chip is electrically connected to the emitter of the transistor and the cathode of the diode through the first resistor. The transistor is a PNP transistor. The collector of the transistor is electrically connected to the output end of the voltage stabilizing chip. The anode of the diode is electrically connected to the output end of the voltage stabilizing chip through the fourth resistor. The ground end of the voltage stabilizing chip is grounded through the fifth capacitor. The output end of the voltage stabilizing chip The circuit is grounded through a third resistor and an adjustable resistor, the output end of the voltage stabilizing chip is grounded through a third capacitor and a fourth capacitor respectively, the adjustable end of the adjustable resistor is grounded, the transceiver circuit includes an integrated circuit, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a crystal oscillator, a first magnetic bead, a second magnetic bead and an antenna, the model of the integrated circuit is CH9141, the power supply end of the integrated circuit is electrically connected to the output end of the voltage stabilizing chip, the eighteenth end of the integrated circuit is electrically connected to the nineteenth end of the integrated circuit through the crystal oscillator, the twenty-first end of the integrated circuit is electrically connected to the antenna, the twentieth end of the integrated circuit is grounded through the ninth capacitor, the fifth end of the integrated circuit is grounded through the eighth capacitor, the twenty-second end of the integrated circuit is grounded through the seventh end, the twenty-second end of the integrated circuit is electrically connected to the fourth end of the integrated circuit through the first magnetic bead and the second magnetic bead, the third end of the integrated circuit is electrically connected to the first magnetic bead and the second magnetic bead respectively, and the third end of the integrated circuit is grounded through the sixth capacitor.

3. The system of the power distribution network one-line-one-case optimization analysis method based on accurate modeling according to claim 1 is characterized by: After the data center of the sub-district power supply bureau collects the feedback data from the data collection device and the natural village distribution network, it calculates the distribution network reliability prediction algorithm, and then transmits the calculated data to the data collection device, and the staff conducts on-site construction or returns.

4. The system of the power distribution network one-line-one-case optimization analysis method based on accurate modeling according to claim 1 is characterized by: The sub-district power supply bureau data center establishes the sub-district power grid topology structure according to the user's geographical location, and simultaneously sends the navigation location and satellite cloud map of the specified power grid topology point to the data acquisition device.

5. The system of the power distribution network one-line-one-case optimization analysis method based on accurate modeling according to claim 1 is characterized by: The data acquisition device exchanges data with the natural village power distribution network. When the staff collects data from the user's meter in the next step, the natural village power distribution network synchronously sends the data to the user's meter, and the user's meter enters a waiting state.

6. The system for optimizing and analyzing the power distribution network based on precise modeling according to claim 5 is characterized by: When the natural village power distribution network and the user's electric meter cannot enter the waiting-for-call state, that is, when the staff cannot automatically match through the data acquisition device, the data acquisition device and the natural village power distribution network or the user's electric meter can be communicated and connected through the network cable interface.

7. The system of the power distribution network one-line-one-case optimization analysis method based on accurate modeling according to claim 1 is characterized by: After the natural village distribution network exchanges and updates data with the data acquisition device, the updated data is transmitted to the data center of the sub-district power supply bureau. Similarly, after the user's electricity meter exchanges and updates data with the data acquisition device, the updated data is transmitted to the natural village distribution network.

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