【 Weak current College 】 energy engineer Handbook---Power By 【 China power house network 】

First, energy-saving project of general implementation steps and service programs

An energy-saving projects implemented generally have to go through the following steps:

● Customer field investigations;

• Submission of programme proposals;

● Make ROI analysis report;

• Submit construction programme;

● Product order and materials;

• On-site installation and commissioning;

• Energy-saving effect and after-sale technical service.

General Service program is:

● On the intention of the user to conduct on-site investigations;

● According to field investigation of materials to the user to submit project proposals for the modification and ROI analysis;

● User confirmation after the submission of a detailed construction plan and product order and material readiness;

● Various preparations, you can enter the installation and debugging;

● Confirm equipment up and running, you can in the user interface for energy, and making the test report;

● Existing users do not regularly visit, provide the necessary technical services.

2. site survey

1. the objectives of the field survey

● Learn about user systems and equipment for basic information, such as system load composition, full-year electricity expenditures, mainly of electrical equipment type and size, system power.

● To general distribution field study room system circuit distribution, the circuit of load conditions.

● Field records the equipment nameplate data and operation parameters, it is best to get technical information about the device copy.

• On-site observation record equipment operating conditions, to operations staff understand the equipment load changes and run time.

● To user requests for historical records of electricity and the main equipment of the running record.

2. the basic requirements of on-site investigation

• Ask questions as muchas possible clear and specific.

• Collect information as accurate and comprehensive.

● Inspect as thoroughly and carefully.

● Fill in the questionnaire must be serious and detailed.

3. fill in the questionnaire

Conduct on-site investigations at the same time, the need to fill in the questionnaire the plug for the proposal for a programme to provide the required data. Fill in the questionnaire should be as comprehensive and detailed, timely manner to the user in question. Back in time to collate, facilitate future archiving.

4, product application questionnaire

● User electricity consumption and power equipment surveys

● Power supply status questionnaire

Third, the proposed reform programme

The reasonableness of the reconstruction plan, directly related to a project's success or failure, must be treated seriously. For a comprehensive reform programme must take into account the returns on investment and energy saving rate level, at least to do energy saving rate can reach inputs and output levels. Product of choice is reasonable, direct impact energy-saving effect is good or bad, and the size of the investment, this requires that we use on a variety of products and applications, on the reconstruction of the object. The only way to guarantee that our programme is best science, most economical and effective. A complete renovation scheme, should include the following aspects:

1. System Description: analysis of the existing system of layout, load characteristics, control, health, and power consumption.

2, building programmes and products selection: for users of load characteristics, raise a reasonable reconstruction programmes, to choose what kind of energy-saving products, you will receive the benefits of what kind of node.

3, description: a simple introduction to the selected product name, characteristics, principles, scope of application of energy-saving and energy-saving rate can be achieved.

4. project implementation plan: includes design drawings, product specific quantity and amount of the subsidiary materials, the proposed construction program and schedule table, requiring the user to meet the situation.

5, return analysis: including total investment and the expected energy saving benefits.

IV. analysis of return on investment

Reasonable return on investment analysis, is to help users make decisions. This requires us to field investigations of materials have scientific analysis, correct assessment of the status of a user's system and power; according to the rehabilitation programmes to determine a reasonable level of expected energy saving rate; clear project total investment and investment return period. ROI analysis mainly includes the following content:

1. System average total electricity consumption: System on an average of total electricity consumption is calculated by the following:

System, the average total electricity consumption = system total power × run daily every year run time × days × load rate

Calculation of the average user system's total electricity consumption to reference users past electricity records or running a record, select the appropriate load rate system. Coefficient selection is too large, more than the users actual consumption level, easily lead to user questions and even antipathy; coefficient selection is too small, would be detrimental to our calculation of return on investment.

2, the expected energy saving rate: according to the choice of products and systems of control, to a reasonable level of expected energy saving rate.

Price: 3, average annual electricity rates for users.

4. the annual average energy efficiency of the system: the system average energy saving benefits available through the following formula:

System of annual average energy efficiency = system average total electricity consumption × price × expected energysaving rate

5. investment costs: investment cost is the cost of purchasing a product, you can also add secondary material costs andConstruction costs.

6, ROI: return on investment is calculated as follows:

ROI = system annual average energy saving/investment costs

7. return cycle: return period is calculated as follows:

Return cycle = 12 (months)/ROI

5. install the implementation

Transformation programme approval after entering the installation phase of implementation. This phase can be mainly divided into the following steps:

1. for construction: reconstruction programmes on the basis of specific construction programmes, mainly include the following items: detailed construction drawings, materials list, construction schedule table, etc. Construction plan after having submitted the final confirmation of the user, and user opinion revised accordingly.

2, product ordering: order the renovation works of the product, verify the product type and quantity and the actual match. After the arrival of the product, in accordance with the procedures on product testing to carry out the necessary checks to confirm that the product is qualified, have problems with the vendor.

3, material preparation: according to the material list procurement, preparation of materials required. Frequently used materials: conductor, stuffing tube, connection fixed materials, insulating tape, number of cylinders, cord ears, auxiliary relays, sensors, circuit breakers, power transformer, and the corresponding ancillary installations, etc. Prepare materials to carefully check material models, specifications, quantity, taking fully into account the safety indicators. Material for a certain amount of credits to avoid because of the calculation error, and the scene situation change material; but not excessive, so as to avoid unnecessary waste.

4. Tools: including common electrical, installation tools, test instruments, records,forms and calculators

5. personnel arrangements: arranged for people involved in the installation of the program, accommodation, transport, communications, etc.

6. site construction: to enter the construction site to wear safety gear, safety code for the scene, listen to user site management guide, do not enter non-construction areas or other restricted places. Site construction needs power, be sure to ask the user for consent of the responsible officer and being made adequate preparations, shorten outage time, so as not to affect the user's normal work. Engineering is large to co-ordinate arrangements, increased efficiency, shorten the duration. Construction process should be made to standardize the operation, construction of the figure; if the situation is different with the drawings, shall promptly communicate with designers, put forward a revised views and modify records. Each process is complete, you want to check and guarantee quality.

7. debugging and run: all installation work is complete, the more comprehensive check again, confirm that all installation is correct before powering up debugging. Powered on before you use multimeter measurement at the supply voltage is within the proper range. The debug process should be strictly in accordance with the instructions of the installation guide and prepare records, unusual to immediate power check, to identify the cause of the failure and to take appropriate corrective measures. If you have multiple devices, power should be individually, not at all debugging power to avoid irreparable harm. All debugging is complete, user acceptance, users are not satisfied with the place you want timely rectification, until a user fully satisfied.

6. Security considerations for site construction

Site construction should be top priority to the safety, security, construction of major should note the following:

1. Enter the scene before you must wear necessary protective gear.

2. site construction to avoid brutal operations, compliance with operating rules.

3. aerial working to take the necessary protective measures and others.

4. on a user's device construction not original equipment operation and function properly.

5, electrical wiring must be powered down.

6. all electrical wiring must contact is good, can not have bare head, electrical insulation to good.

7, power lines and signal lines to separate the alignment as far as possible; different line preferably different color difference, or there is a corresponding line number markers.

8, if the original equipment line unchanged, should make full use of existing connectors and connection method, avoid lines cut; changes of location as central point for easy operation, check the connection to; to ensure good contact and attention and external insulation.

9, installation process not to open, to disable the user's equipment, if there is a need to first obtain the consent of the user or by a user assistance operations.

10, the installation process to physical safety always come first, safety accidents to calm, cool, promptly and decisively to take the necessary remedial measures; after careful review of lessons learned, to prevent similar incidents from happening again.

7. energy-saving effect

Project implementation is complete, the installation will make the appropriate energy-saving effectiveness test to test the performance of energy-saving products and provide users with a factual basis. Examination procedure is as follows:

1. Select the test scenario

Different energy-saving products, the test method does not do the same; the same energy-saving products, or you can take different test methods. The basic principle is to choose an intuitive, science, simple, users are able to accept the test method. Common test methods as shown in table 2.1.

Testing methods for evaluation of test instruments applicable products
Short-time tests clip-on ammeter lamp saver series of intuitive, simple and precise enough.
Long hours in, test meter all products intuitive, accumulates. Need to install the meter.

2. Select test instrument

Test programme is established, the required test instrument are clear. The main instruments include the following:

A. clip-on ammeter. For short-time tests, no need to install the wiringThat is very simple and easy. Test line current changes, you can calculate the amount of power consumption and power saving. Optional clip-on ammeter preferably numeric accuracy of not less than 0.1A.

B. meter. The commonly used active Watt-hour meter. In single-phase and three-phase, has a different range, and can be completed with transformer to expand its range. The power consumption of the circuit can be cumulative.

C. current transformer. Used in conjunction with the meter to expand electricity meters range. Note Select the rate not too big, so as not to affect the accuracy of the records.

3. determine the participation in the tester. In order to ensure the fair, the best test by vendors and users together, or to delegate authority.

4, data logging and outside. The testing process to a timely relevant data records in a dedicated test data records in the table, the recorded data must be accurate and must not be altered; record sheet must have participated in the tester's signature. The end of the test data required to make the necessary calculations.

5. the test report. After testing, you need to produce the test report. Test report consists of:

A. Overview. The basic information about the test and test results for a simple introduction.

B. product brief. Briefly describes the tested product.

C. Description of test methods. Detailed description of test methods, test equipment, test object, the test of time.

D. analysis of test results. On the original test data for analysis, processing, and concluded that the test results.

E. Appendix. Including the introduction of test instruments, the relevant data for the chart.

6, testing considerations.

A. for testing prior to the test object's operating conditions have a comprehensive understanding of the conditions to be ensure that the duration of the test is relatively constant, in order to get accurate test results. The length of the test period varies by product.

B. using test method in conjunction with the product characteristics, in order to get the best results.

C. to distinguish the system load and managed load difference. System load is the load on the system tested and controlled load is governed by section electric control part of the load. Calculation of electricity-saving rate is relatively controlled load of electricity-saving rate, which is greater than or equal to the system of electricity-saving rate.

D. test data processing may compare image, intuitive graphical representation, in order to enhance the effect.

8. project technical archives

A project is completed, not only is it reasonable to watch programmes, construction is standardized, effect is the customer satisfaction but also technical archives whether professional, specifications. Because this is directly related to the construction of the units in the user's image in the eyes of the user on the project's final decision. A complete technical file, including the energy saving recommended books, construction technology, engineering and inspection reports, and other sections, the following are described separately.

1. energy saving recommended books

Energy saving recommended books via a device investigation, submitted to the user engineering program plan review. A good proposal, should allow the user to read later understand why you want to make energy saving, project investment and return to user concerns. To make the user feel that the proposed programme is realistic, practical and very effective. Energy saving proposals must include the following:

A. Overview of the status quo: a realistic analysis of the status of the object, listing the problems and proposed modification of the programme.

B. Introduction: briefly describe the main features of the energy-saving products, basic principles and technical parameters.

C. modification plan: detailed statement in detail. There should be a detailed description of the programme and the necessary charts, allowing users to have a clear improvement project.

D. implementation of the programme: proposed project implementation plan and steps to make it easy for users to co-ordinate arrangements, help users put into practice.

E. test scenarios: make energy-saving effectiveness testing means and methods. Must be based on the user device features a scientific, strict, the user can accept the test programme.

F. ROI analysis: data based on field survey and take the reform project, the return on investment for pragmatic analysis, gives more accurate customer benefit analysis, the data must be consistent with the actual.

G. related information: as a user directory, applications, test reports, etc, to increase the credibility of the persuasive and materials.

2. construction technical report

Construction technical report including the following sections:

A. construction drawings. Clear equipment installation locations, fixed location and methods, alignments, specific wiring diagrams, technical requirements, etc. Construction drawings must be accurate, standardized, consistent with the actual situation; cannot exist easy to let the builders misunderstanding.

B. material list. Detailed and clearly lists the names of all the materials engineering, model specifications, quantity, select materials must comply with the relevant installation specifications and requirements for electrical safety regulations; according to theactual requirements to determine a reasonable amount of material, so as to avoid unnecessary waste.

C. construction schedule. Construction progress must be clear, specific, according to the site's actual situation make reasonable construction schedule; for larger projects, you must make overall plans, efficiency. Construction schedule as soon as you decide on, you must strictly comply with the implementation, and the specialist is responsible for supervision, to ensure the smooth progress of the project.

D. debug logging table. In strict accordance with the requirements of the operating manual, for debugging and debug logging, so that in future lessons.

E. security operations specification and technical requirements. Specific security considerations for the construction and related technical requirements.

3, engineering and inspection reports

Engineering inspection reports generally include the following:

A. Introduction: briefly describe the basic situation of project.

B. equipment introduction: introduce the main equipment of the operational features and technical parameter, and the equipment of health after reconstruction.

C. completion chart: provide complete final drawings.

D. test reports: detailed test plan, test time and testers, test equipment, test the original record, data analysis, conclusions, and acceptance of the signature and seal unit.

9. after-sale technical service

After-sale technical services is a necessary link works, technology services have a direct impact on user distributors of trust, influence product marketing. Engineers have to after-sale technical service as an integral part of a project. After-sale technical service mainly includes the following:

1. user visits and technical consultation: on existing users do not regularly visit, learn about equipment operation and energy-saving effect; answer user questions about technology.

2. equipment healthcheck: not regularly equipped with energy-saving and energy efficiency of equipment operation check to ensure the reliability of operation.

3. energy-saving effectiveness test: according to user requirements for the use for some time-saving device for energy-saving effects review.

4, data collection, information feedback: periodically collects user's electricity bill and the operation of the equipment, of statistics and analysis system for energy efficiency, and timely information about the feedback to the user and total generation