Case study of energy efficiency management system


Case study of energy efficiency management system

1. Industry Overview

With the acceleration of China’s urbanization, the country’s increased efforts in environmental protection and the people’s awareness of water safety, there are more and more water treatment projects across the country, and major water companies continue to expand under favorable policies and the blue ocean in the water market. , The volume continues to increase, but tends to stabilize, technology mergers and acquisitions and resource integration have become the mainstream of the industry market, and intensive cultivation of business resources has become the new normal of the industry.

2. the problems faced

How to reduce production and operation costs is the key to efficiency improvement for major water companies, increase asset returns, and achieve energy conservation and consumption reduction under the core goal of ensuring that water output meets the standard. The energy consumption expenditure in the water treatment business accounts for more than 50% of the production cost of the water plant, and the power consumption of the three core sewage treatment systems: lifting system, aeration system, and sludge dewatering system accounts for 70% to 80% of the entire energy consumption. Therefore, energy saving and consumption reduction is the focus of water plant cost management. Therefore, the construction of an energy efficiency management system is of great significance, and the energy efficiency management of the three major systems has become an important starting point for energy saving and consumption reduction.

Develop a set of energy efficiency management solution products focusing on water treatment (sewage treatment) and based on real-time data, providing configurable configuration functions and a series of energy efficiency management functions to provide enterprises with an overview of water treatment energy efficiency and energy consumption Monitoring, energy efficiency analysis of the three major systems, energy efficiency cost analysis, team performance analysis, etc., provide information-based means to provide support for companies to understand energy use, find energy vulnerabilities, and use energy-saving space to achieve energy conservation and consumption reduction.

3. Introduction to system functions


This interface is the home page of the system, including factory video surveillance, annual power consumption information of various departments, and year-on-year power consumption.

Comparison of monthly energy consumption value and planned value of total energy consumption, and annual evaluation of water and electricity consumption

Energy efficiency analysis

This function is the energy efficiency analysis of the three major systems and equipment analysis Improve system analysis

Select a hoisting system or pump from the equipment list (inlet hoisting system, external return system, intermediate hoisting system, out-draining system), and display the energy efficiency status and energy efficiency analysis of this system or pump:

System energy efficiency status: energy efficiency evaluation score. The system efficiency and electricity consumption per ton of water increased by 1 meter (should be the electricity consumption per ton of water) are used as evaluation indicators.

Analysis of blast aeration system

Select a blower system from the equipment list to display the energy efficiency status and energy efficiency analysis of the system:

System energy efficiency status: energy efficiency evaluation score. Take the blower efficiency as the evaluation index.

Equipment energy efficiency analysis

Select a device in the device tree menu to display the energy efficiency information of the device. Equipment attributes, energy efficiency evaluation level, energy consumption value, chain ratio value.

cost analysis

Cost analysis can intuitively reflect the energy consumption structure of the water plant and the energy consumption of each system.

Analysis of energy consumption

It is divided into production energy composition analysis and plant energy consumption composition analysis.

Electricity cost analysis

Analysis of plant-wide electricity costs: divided into basic electricity costs, electricity costs per kilowatt hour, and total electricity costs, showing the value of electricity costs and planned values, as well as the value of electricity saving.

Cost curve: Shows the following curve, the annual electricity bill budget value, and the current actual electricity bill.

The composition of the whole plant's electricity savings: a pie chart of the proportion of electricity savings in production, laboratory office, kitchen dormitories, lighting, and others;

Composition of saving electricity costs in production: a table of the proportion of production savings.

Pharmacy cost analysis

The pharmacy fee is divided into: the composition of the whole plant pharmacy fee and the pharmacy cost curve

The composition of the entire plant's pharmaceutical costs: pie chart of the proportion of each pharmaceutical cost, the actual value of the pharmaceutical cost, the planned value and the deviation value.

Curve: Comparison chart of the cost curve of each medicine. The cost curve of medicament per ton of water

One-time system diagram

High-voltage and low-voltage primary system diagrams: display data such as smart meters and automatic control systems to measure electricity.

Click [Query Historical Data] to pop up the historical data query page, and you can query the electrical parameter curve of any electrical circuit.

Team performance
  • Dynamic display of team list and energy saving value: Select a shift group in the shift group list, and then dynamically display the energy saving value of the current day, the energy saving value of this month, and the energy saving value of the selected shift group.
  • According to the query time and performance indicator dashboard and curve comparison chart display: Query performance indicators and time: saving energy, saving pharmacy costs, ton water and electricity consumption, ton water pharmacy fee, ton dry mud electricity consumption, ton dry mud medicine consumption (PAM), ton dry mud medicine fee, etc. The dashboard displays the target value and actual value corresponding to the query performance indicator; the target value, actual value, difference, and performance value of the query performance indicator are displayed in the list. Curve comparison chart: Displays the performance index comparison curve chart of each team (each month target value and actual energy saving value)
  • Team performance statistics table: each team saves electricity bills this month and this year; each team saves drug costs this month and this year; saves pharmaceutical costs this month and this year;
Equipment ledger

Add, delete, modify, and query equipment. The basic situation of the reaction equipment.

Shift management

Arrange personnel in teams to realize a shift system.

Click on the schedule management to set up a period of schedule. Enter the start time, number of days, shifts and shift cycles, and the system will automatically schedule shifts.

Basic data settings

  • Plan data. Plan data includes information such as ton of water and electricity consumption, planned electricity consumption, planned water production, etc. These are uniformly customized by the water plant, and the data is transmitted from other systems.
  • The basic data of the equipment, this kind of data does not change, just set it and save it in the database for access.

4. project summary

This project completes the monitoring and analysis of the energy efficiency level of the whole plant and each process (workshop, team), and the economic operation status of the main energy-using equipment through the online collection of energy consumption data of each link in the production process, and implements the energy efficiency zone responsibility System management has motivated all employees to save energy and reduce consumption.

The economic operation and energy efficiency evaluation of key equipment (three major systems) are analyzed. Monitor and analyze the economic operation status of main energy-consuming equipment (systems) such as lifting conveying system, blast aeration system, sludge dewatering system, etc., to help operators on duty monitor and control energy consumption system operation efficiency and energy consumption, and reasonably control Process operating parameters to achieve water quality compliance and energy saving and consumption reduction measures.

Through the setting of energy efficiency performance indicators, indicator analysis and comparison and assessment, the team is motivated to save energy and reduce consumption and effectively reduce energy consumption costs. At the same time, the problem of the different ability levels of different operation teams is solved, so as to achieve uniform operation and operation specifications.

In addition, an intuitive analysis of the cost clearly reflects the energy-saving point, which is convenient for managers to reform the management mechanism for the energy-saving point, improve production capacity, thereby reduce energy consumption and increase revenue.

The energy efficiency management system of the wastewater treatment plant is in the stage of rising demand. The leading enterprises in the industry are all in or preparing to carry out the construction of "smart water plants", and the energy efficiency management system is an essential component of the construction of smart water plants. For sewage companies that do not fully build smart water plants, they also intend to build a separate energy efficiency management system to establish an energy efficiency analysis system, improve efficiency through management, and reduce costs.

It is estimated that there will be more than 20 project opportunities for energy efficiency management systems each year. As the industry expands, the opportunities will gradually increase each year, and the competitiveness is very high.