CN-121994118-A - Induction electric protection system and method for sightseeing station

CN121994118ACN 121994118 ACN121994118 ACN 121994118ACN-121994118-A

Abstract

The application discloses an induction electric protection system and method for a sightseeing station, wherein the system comprises a data acquisition module, a people stream prediction module, a risk assessment module and a protection module, wherein the data acquisition module is used for acquiring time sequence period information, current weather information of the sightseeing station and current induction electric information of a target area of the sightseeing station, the people stream prediction module is used for determining current personnel existence probability of the target area based on the time sequence period information, the weather information and a historical people stream statistical model, the risk assessment module is used for generating an electric shock risk value of the target area according to the weather information, the induction electric information and the personnel existence probability, and the protection module is used for triggering early warning measures and/or starting active compensation measures aiming at the target area when the electric shock risk value is larger than a threshold value. The application can improve the accuracy of the induction detection of the sightseeing platform, thereby accurately and effectively realizing the induction protection of the sightseeing platform.

Inventors

LU JIAQI
WANG GUANGJIANG
JIAO WANZHANG
YANG YANG
Huang Jiading
ZHANG JUNJIE

Assignees

云南电力试验研究院(集团)有限公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. The induction electric protection system of the sightseeing station is characterized by comprising a data acquisition module, a people stream prediction module, a risk assessment module and a protection module, wherein the people stream prediction module is respectively connected with the data acquisition module and the risk assessment module, the risk assessment module is connected with the protection module, The data acquisition module is used for acquiring time sequence period information, current weather information of the sightseeing station and current induction electricity information of the target area of the sightseeing station; The people stream prediction module is used for determining the current people existence probability of the target area based on the time sequence period information, the meteorological information and the historical people stream statistical model; The risk assessment module is used for generating an electric shock risk value of the target area according to the meteorological information, the induced electricity information and the personnel existence probability; And the protection module is used for triggering early warning measures and/or starting active compensation measures aiming at the target area when the electric shock risk value is greater than a threshold value.
2. The system of claim 1, wherein the system further comprises a controller configured to control the controller, The time sequence period information comprises a current time, a week and a holiday mark; The weather information comprises temperature, humidity, rainfall and wind speed; The induction electric information comprises load information of the sightseeing station for supplying power or a target power transmission line, and the distance between the target power transmission line and the sightseeing station meets a distance condition.
3. The system of claim 1, wherein the people stream prediction module comprises: A database unit for storing historical personnel activity data associated with the target area, wherein the historical personnel activity data is used for indicating the residence time and residence frequency of personnel in the target area at different times, different weather and different date types; and the estimation unit is used for matching similar environment modes from the database based on the time sequence period information and the meteorological information and outputting the current personnel existence probability of the target area.
4. The system of claim 1, wherein the risk assessment module comprises: A voltage measurement unit for measuring an induced voltage to ground of the target area; the dynamic human body impedance simulation unit is used for determining a human body simulation resistor according to the meteorological information; And the comprehensive risk calculation unit is used for calculating the expected contact current based on the induced voltage and the human body simulated resistance, and carrying out weighted calculation on the expected contact current and the existence probability of the personnel to obtain the electric shock risk value of the target area.
5. The system according to claim 4, wherein the integrated risk calculation unit is specifically configured to: determining a corresponding risk probability correction factor based on the person presence probability, wherein the risk probability correction factor increases with an increase in the person presence probability; calculating a composite risk value based on the expected contact current and the risk probability correction factor; And comparing the comprehensive risk value with at least two preset risk thresholds to determine the current risk level.
6. The system of claim 1, wherein the protection module comprises a hierarchical early warning unit and a compensation device configured to execute control logic to: When the electric shock risk value exceeds a first threshold value but does not reach a second threshold value, starting a first-stage early warning in the target area by the grading early warning unit, wherein the second threshold value is larger than the first threshold value; When the electric shock risk value reaches or exceeds the second threshold value, the grading early warning unit starts second grade early warning in the target area and synchronously triggers the compensation device to generate compensation current with opposite phase to the induced voltage until the voltage of the target area is smaller than a safety threshold value.
7. The system of claim 6, wherein the compensation means comprises: The power electronic inversion unit is used for generating compensating current with controllable amplitude and phase; The phase locking control unit is used for generating a drive instruction of reverse phase compensation based on the induced voltage; And the closed-loop feedback adjusting unit is used for continuously monitoring the change of the target area to the ground potential after the compensation is started and dynamically adjusting the amplitude of the compensation current until the voltage of the target area is smaller than a safety threshold value.
8. The induction electric protection method for the sightseeing station is characterized by comprising the following steps of: Acquiring time sequence period information, current weather information of a sightseeing station and current induction information of a target area of the sightseeing station; Determining the current personnel existence probability of the target area based on the time sequence period information, the meteorological information and a historical people stream statistical model; Generating an electric shock risk value of the target area according to the meteorological information, the induced electricity information and the personnel existence probability; And when the electric shock risk value is larger than a threshold value, triggering early warning measures and/or starting active compensation measures aiming at the target area.
9. The method of claim 8, wherein the step of determining the position of the first electrode is performed, The time sequence period information comprises a current time, a week and a holiday mark; The weather information comprises temperature, humidity, rainfall and wind speed; The induction electric information comprises load information of the sightseeing station for supplying power or a target power transmission line, and the distance between the target power transmission line and the sightseeing station meets a distance condition.
10. The method according to claim 8, wherein triggering an early warning measure and/or initiating an active compensation measure for the target area comprises: If the electric shock risk value exceeds a first threshold value but does not reach a second threshold value, starting a first-stage early warning in the target area, wherein the second threshold value is larger than the first threshold value; if the electric shock risk value reaches or exceeds the second threshold value, carrying out second-stage early warning on the target area; controlling the compensation device to generate compensation current which is opposite to the induction voltage; and based on the compensated voltage feedback, the compensation current is regulated in a closed loop until the voltage of the target area is smaller than a safety threshold.

Description

Induction electric protection system and method for sightseeing station Technical Field The application relates to the technical field of induction electric protection, in particular to an induction electric protection system and method for a sightseeing station. Background In recent years, with the advanced development of national hydropower resources, a large number of large and extra-large hydropower stations are built and put into operation successively. In order to meet the ornamental demands of the public on the ambitious engineering landscape of the hydropower station, various sightseeing platforms are specially built near the hydropower station. These sightseeing stations are typically located in special geographical environments where space is limited, such as canyons, and most are located under high voltage transmission lines or in close-range crossing areas. In the running process of the high-voltage transmission line, an induced electric field is generated in the space around the sightseeing platform due to the existence of the voltage of the lead to the ground, and when a metal structure, a grounding device or personnel exist on the sightseeing platform below or nearby the transmission line, the ground potential is generated due to electrostatic induction. When a person touches or approaches facilities such as metal rails, floors, observation equipment and the like where high induced voltages exist, contact voltages and step voltages are generated, and electric shock injury accidents can be caused. In some extreme cases, the induced voltage can reach hundreds of volts or even higher, which constitutes a serious threat to human safety. At present, the protection effect of the conventional lightning protection grounding measures on the induced electricity is limited, and how to promote the induction electricity protection of the sightseeing platform is a hot spot of current research. Disclosure of Invention The application provides a sightseeing station induction electric protection system and a sightseeing station induction electric protection method, which are based on the method described by the application, can improve accuracy of sightseeing station induction electric detection, and further accurately and effectively realize sightseeing station induction electric protection, thereby improving safety of tourists. The application provides an induction electric protection system of a sightseeing station, which comprises a data acquisition module, a people stream prediction module, a risk assessment module and a protection module, wherein the people stream prediction module is respectively connected with the environment sensing module and the risk assessment module, the risk assessment module is connected with the protection module, the data acquisition module is used for acquiring time sequence period information, current weather information of the sightseeing station and current induction electric information of a target area of the sightseeing station, the people stream prediction module is used for determining current personnel existence probability of the target area based on the time sequence period information, the weather information and a historical people stream statistical model, the risk assessment module is used for generating an electric shock risk value of the target area according to the weather information, the induction electric current and the personnel existence probability, and the protection module is used for triggering early warning measures and/or starting active compensation measures for the target area when the risk value is larger than a threshold value. The application provides an induction electric protection method for a sightseeing station, which comprises the steps of obtaining time sequence period information, current weather information of the sightseeing station and current induction electric information of a target area of the sightseeing station, determining current personnel existence probability of the target area based on the time sequence period information, the weather information and a historical people flow statistical model, generating an electric shock risk value of the target area according to the weather information, the induction electric information and the personnel existence probability, and triggering early warning measures and/or starting active compensation measures for the target area when the electric shock risk value is larger than a threshold value. Drawings In order to more clearly illustrate the application or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from them without inventive effort for a person skilled in the art. FIG. 1 is a functional block diagram of an induction protection system