Sub-control water dispatch management big data platform case


Sub-control water dispatch management big data platform case

1. Industry Overview

With the rapid economic development, rapid population growth, and acceleration of urbanization, the water consumption in various places has been increasing, and the problem of water supply shortage has occurred one after another. While rational use of water resources, attention should be paid to the development and management of water resources to promote Sustainable development of water resources. At present, the large-scale water transfer projects under construction and planning in China include South-to-North Water Transfer, Diversion from the Yangtze River to Han, Central Yunnan, and Diversion from Han to Weihe River. And social stability is of great significance.

Therefore, the rational allocation and effective use of water resources not only meet the national water resources "total control and quota management" water-saving goals, but also contribute to urban water supply, rural water supply, irrigation areas and agricultural irrigation, and ecological environment maintenance along the water transfer line. Industrial water supply plays a decisive role. Among them, the water dispatch system is the automatic control center of the water transfer project. It is a complex system project. Its overall goal is to reasonably allocate the limited water resources in the water source area under the condition of meeting the reasonable allocation of water resources. The amount of water transferred is delivered to the water dividers according to the plan, safely, timely, in an appropriate amount, and efficiently.

After entering the 21st century, China has paid more and more attention to saving water resources and the construction of a large number of cross-basin water transfer projects. The water dispatch management system has been greatly developed in China and has been applied in the east and middle routes of the South-to-North Water Diversion Project.

2. the problems faced

(1) Water resource allocation problem

Water transfer projects are located in different regions along the line, with different user composition characteristics and different levels of water shortage. From the perspective of rational use of water resources, it is necessary to formulate a practical water resource allocation plan, and rationally allocate limited water resources in water sources to make the best use of. May be a big benefit.

(2) Problems with normal operation control

Large-scale water transfer projects have long water delivery distances, many control nodes, and complex hydraulic conditions. During normal operation, the multiple control (pumping stations) and sluice gates must be highly coordinated, otherwise the danger of overflow may occur. Therefore, the water dispatch process It is necessary to formulate feasible operation control strategies and rules to ensure the safe operation of main canals and to efficiently deliver water to users.

(3) Water delivery operation scheduling problem during ice period

In the north, there is a problem of channel icing in winter, and the water delivery time in winter can last for several months. After the main canal channel freezes, the water delivery capacity will inevitably decrease. The reduction of the water delivery capacity will inevitably affect the implementation of the water delivery plan. Therefore, it is necessary to study the water delivery capacity of the trunk canal during the ice period.

(4) Accident emergency dispatch problem

Due to the complexity of the water delivery system of the water transfer project, various accidents or emergencies may occur during the water delivery process. When an accident occurs, how to first prevent the expansion of the accident section, secondly ensure the normal water delivery of the upstream section, and extend it as much as possible again For the water supply in the downstream section of the accident, try to minimize the impact of the accident.

3. Introduction to system functions

Query statistical analysis

Procedural query

Based on GIS, on a map, query statistics, generate reports, draw curves, etc. at a given time or any time. Click on the bubble (flow, water volume, water level, water quality, pressure, temperature, rainfall, equipment working conditions, engineering safety) on the GIS map, and pop up a query statistics pop-up window to select the monitoring type, monitoring point, monitoring location, and monitoring time.

Report query statistics

According to the time, type, and monitoring site, select daily, monthly, and annual reports for water regime, project operation, and project safety and print.

Project water analysis and forecast

Medium and long-term water inflow forecast

Time series analysis is the theory and method of establishing mathematical models through curve fitting and parameter estimation based on the time series data obtained. For the forecast of water inflow, we can consider adopting the modeling method of time series when the historical year, month, and ten-day inflow data are known.

Short-term inflow forecast

The forecast of short-term water inflow mainly uses flow data from multiple upstream hydrological stations in different periods, water level data, rainfall data in each upstream interval during the forecast period, and other related data to establish a multiple linear regression model.

Daily dispatch management

Water dispatch plan

Water application

Each point of the water diversion project will report the annual, monthly, and ten-day planned water use status to each management sub-center through paper or electronic files, and each management sub-center will submit it to the management office, and the information will be manually entered into the system.

Annual distribution plan preparation

Each dispatching sub-center submits next year’s annual water consumption application and monthly water demand range before October 20 each year. The plan editor summarizes the water demand process and checks the estimated total water diversion volume of each dispatching sub-center at the end of the year and the actual amount of the current year. After the deviation of the water diversion, determine the annual water supply volume of the dispatching sub-center according to the total adjustable water volume of different guarantee rates and the predetermined rules of increase and decrease, check the generalization model, and call the water distribution plan preparation module by selecting different distribution rules Get multiple alternative allocation plans.

Preparation of monthly distribution plan

Each dispatching sub-center submits an application for the total amount of water diversion in each ten-year period of the next month on the 25th of each month. The plan compiler summarizes the supply and demand process, and counts the deviations between the total amount of water diversion and the planned total amount of water that have occurred in each dispatching sub-center, in order to ensure the remainder of the dispatch year Time diversion plan, if necessary, adjust the amount of water diversion for the next month according to the profit and loss deduction rules specified in advance to the dispatching sub-centers, and prepare the water distribution plan for each ten-day next month by calling the water distribution plan preparation module.

Ten-day distribution plan preparation

At the end of each ten-day period, each dispatching sub-center submits the total amount of water diversion of each day and the daily water amount application. For the cumulative deviation of the current dispatch year, adjust the water diversion volume of each sub-dispatch center in the second ten days according to the profit and loss deduction rules, and prepare the daily water distribution plan for the second ten days by calling the water distribution plan preparation module.

Allocation plan query

According to the query condition time, the program number, the program query. The query results are displayed in the form of a table. Click the View button to view the details of the plan.

Daily dispatch management

Scheduling instruction generation

Users in the dispatch center can generate dispatch instructions automatically and manually. The function of automatically generating dispatch orders requires the dispatcher on duty to select the approved [daily dispatch plan] to directly generate dispatch instructions, and the dispatch instruction information can be modified and deleted. The manual generation of dispatch order function requires the dispatcher to enter the dispatch order content in the list according to the daily dispatch needs.

Dispatch instruction review
Dispatch instructions

The dispatching instructions after approval, including the target flow of a set of pump stations and gates of the whole line in the current dispatching period, are sent to the facility monitoring system for execution. The facility monitoring system will implement real-time feedback to the dispatching management department such as the dispatching center and each management sub-center. When the gate flow is within the change threshold of the target value, it belongs to normal dispatch. The water dispatch system only receives feedback from the facility monitoring system; when the gate flow and water level (or opening) exceed the target value change threshold, the facility monitoring system will feedback the current The water dispatching system receives the alarms of the facility monitoring system, and calls the real-time dispatching model to generate new full-line or partial dispatching instructions based on the current dispatching status and dispatching goals, and sends the facility monitoring system execution and feedback.

Scheduling instruction feedback

After the dispatch order is issued, the local station dispatcher on duty must immediately give feedback to the dispatch center after receiving the dispatch order. If the transfer order is not feasible, explain the reason; if the transfer order is feasible, the local station must execute the transfer order within 15 minutes, and feedback the result information to the dispatch center after the transfer order is executed

Scheduling plan evaluation

The design goal of the water dispatch evaluation module is to establish the evaluation index, evaluation method and dispatch plan evaluation model for evaluating the implementation effect of the water dispatch plan, and to compare the annual plan in terms of plan completion, water supply guarantee degree, water delivery stability, water supply efficiency, water supply capacity, etc. The monthly and ten-day water scheduling results are evaluated, and the scheduling parameters are continuously optimized through the evaluation, so as to improve the efficiency of water diversion project operation and water supply utilization efficiency, and provide support for the rolling preparation of daily scheduling plans.

Emergency dispatch management

Emergency plan management

Emergency plan management includes the query and new functions of emergency plan. The administrator adds new emergency plans according to different categories such as flood control emergency, engineering risk elimination, and emergency water supply.

Emergency consultation decision

Emergency consultation management

Users can query and add emergency consultations according to the category and degree of the emergency. The management of emergency consultations is for emergencies. The management personnel of the consultation will include the category of emergency, the name of the emergency, the time of the meeting, the topic of the meeting, and the meeting The form of consultation, the extent of the event, the participating departments, and the summary of emergency events are issued to realize the automatic management of the consultation process.

Conference Information Management

When an emergency event occurs, the consultation system must be able to quickly obtain the subject information of the relevant emergency event, and quickly and accurately display the information to the consultation decision-maker. Therefore, it is necessary to apply the consultation information management module to make, integrate and manage the consultation information in advance. That is, the information template, the administrator can query the consultation information according to the emergency event category.

Conference information display

After an emergency occurs, the emergency consultation management staff will formulate the consultation information according to the consultation management process. After completion, the consultation decision-makers can click on the emergency alarm point on the GIS map, and the system will pop up the consultation information display interface, according to different emergency Events display different information.

Conference plan management

According to the content of the consultation decision, the user generates the consultation plan, and the consultation plan management provides query and new functions.

Consultation process management

Consultation process management: According to the consultation time, the consultation archive is inquired and added. The consultation process archive mainly refers to the consultation time, location, participants, related responsibilities, and topics involved in the consultation process. , Meeting emergency events, meeting minutes for preservation and processing.

Emergency response

Emergency response management

Response agency management

Enter the response organization management page, the report will automatically read the emergency response organization database data, and display the organization, professional team, cooperation unit and other related information on the page. The report has the functions of querying, adding, modifying, and deleting personnel.

Response agency management

Enter the response material management page, the report will automatically read the emergency response material database data, and display the emergency material related information on the page. The report has the functions of querying, adding, modifying, and deleting materials.

Dispatch instruction query

After the consultation analysis and decision-making are completed, the consultation plan is formulated and emergency dispatch instructions are automatically generated. The emergency dispatch instructions will be automatically saved in the emergency dispatch instruction query report, and the emergency dispatch instructions can be inquired according to the query conditions of time and dispatch number.

Emergency response implementation

Emergency dispatch tracking

After the emergency dispatch order is issued and executed, the staff can track the real-time working condition information and video information of the dangerous scene, and complete the supervision and management of the emergency dispatch order response progress, plan execution status, and emergency response effect.

Emergency response summary

Response summary management

After the implementation of emergency dispatch is completed, it is necessary to conduct a comprehensive summary, record and management of emergency incident analysis and consultation, decision-making and command, emergency response, financial investment, benefits obtained, experience and lessons, and advanced personnel.

4. project summary

The water dispatching management system adopts the unified dispatching mode of the whole project. After analyzing the incoming water and the water demand of the water recipients along the line, the annual water distribution model is used to formulate annual, monthly, and ten-day dispatch plans for full-line water distribution. According to the working conditions of the pump/gate (valve) stations of the whole line and the water regime of the reservoirs and water pipelines, according to the water distribution plan, the whole line of hydraulics is carried out with the support of the hydraulic model and the joint dispatch model of each pump and gate (real-time dispatch model) Calculate and issue running commands to the pump/gate (valve) station monitoring system for execution. The execution results of the pump/gate (valve) station monitoring system are fed back to the dispatching system in time, and the joint dispatch model decides whether to adjust the control and then resend it to the pump/gate (valve) station monitoring system. In this dispatch and control process, real-time dispatch is closely integrated with the pump/gate (valve) station control system to ensure the full realization of project dispatch management functions:

1. Water balance analysis
  • Project inflow analysis and prediction: According to the project hydrological analysis results, according to the year, season and month, establish the project inflow analysis and prediction model, which can form the analysis and prediction chart;
  • Demand analysis of water supply objects: According to the type, quantity, and time characteristics of water supply objects of the project, a water demand model is established according to seasons, months, and ten days, which can form a water demand chart;;
  • Compilation of water allocation plan: Combining the analysis and forecasting of project inflow and water demand, prepare seasonal, monthly and ten-day water allocation plans to form pump station operation and reservoir adjustment plan charts.
2. Real-time monitoring and scheduling
  • Compilation of daily water supply load diagram: According to the high, medium and low water years, combined with the annual water forecast, establish a revised 36-day typical daily water supply load dispatch diagram throughout the year to form a project daily dispatch plan;
  • Engineering operation scheduling monitoring: According to the daily water supply scheduling plan and the real-time monitoring parameters of the engineering operation, detailed engineering scheduling instructions are generated, refined to the real-time operation requirements of field equipment, and issued for execution, and remote monitoring of the execution of the scheduling instructions ;
  • Engineering scheduling analysis and evaluation: Analyze and evaluate the scientific rationality of engineering operation scheduling based on the amount of water taken, pumped, stored, water supplied, and discarded, as well as the operating time and energy consumption of facilities and equipment.
3. Optimal scheduling of pumping stations
  • Research on cascade pumping station scheduling: based on the structural characteristics and hydraulic characteristics of the cascade pumping station, through digital and analog analysis, establish an optimal scheduling operation mechanism and operating rules for the cascade pumping station;
  • Cascade pumping station scheduling model: According to the cascade pumping station optimization scheduling operation rules, establish the optimal scheduling mathematical model under different initial and boundary combination conditions;
  • Joint dispatch application development: On the basis of project operation dispatch monitoring development, realize the development of optimized dispatch application function of cascade pumping stations.
4. Emergency dispatch management
  • Emergency plan management: According to the overall project characteristics, extreme drought, engineering accidents, water quality pollution, etc., formulate emergency plans for flood control, project risk elimination, emergency water supply, etc., and realize the electronic management of the plan and the application based on a map ;
  • Emergency consultation and decision-making: According to the development and change trend of emergency events, analyze and predict possible disasters and disaster losses, and combine with emergency plans to generate a comparison emergency with technical data support for consultation leaders and experts to study, judge, and analyze Plan, and has the function of recording and summarizing expert opinions and final decision-making conclusions;
  • Emergency response: Realize the management of emergency response organizations, professional teams, cooperative units, and material reserves, and automatically generate emergency instructions based on the conclusions of the consultation analysis and decision-making, and realize the implementation of emergency dispatch orders and feedback tracking.