CN104809337A - Practical model construction method for electricity consumption of main station loads of transformer substation - Google Patents

Abstract

The invention discloses a practical model construction method for the electricity consumption of main station loads of a transformer substation, which is characterized by including the following steps: the station loads are decomposed modularly; according to the electricity consumption of the station loads per month in recent years, the electricity consumption of the station loads per year is divided into a plurality of phases; the statistics of the types, installation locations, number, rated powers and operation laws of the main station loads of the transformer substation are collected, so that main station load distribution tables are respectively generated; the illumination systems and the air-conditioning system at different installation locations in the transformer substation are classified according to the operation laws and purposes; in combination with the operation laws of the loads and the influence degree of each influencing factor on the electricity consumption of the main station loads, the daily average operation time of the main station loads at each phase is obtained; an electricity consumption calculation formula is utilized to calculate the electricity consumption of each main station load module. The practical model construction method disclosed by the invention can rapidly calculate the electricity consumption of each main station load module, and has high practical value in practical engineering.

Description

A kind of transformer station mainly stands by load electricity consumption utility model modeling method

Technical field

The present invention relates to technical field of power systems, particularly a kind of transformer station mainly station load electricity consumption utility model modeling method.

Background technology

Line loss weighs the important indicator of electric quantity loss size, is also that country is to one of main performance assessment criteria of grid company.Line loss comprises line loss and transformer station's loss, and at present for the research comparative maturity of line loss, but the loss that transformer station causes but is studied seldom.In transformer station, equipment is various, start and stop are frequent, need to consume a large amount of electricity, but in transformer station equipment component as the electricity consumption of equipment such as isolating switch, disconnector amount fix and electricity consumption rule be difficult to research, and the main station such as transformer cooling system, air-conditioning system load quantity is many, rated power large, it is very large that its power consumption accounts for station power consumption ratio.So in order to reduce line loss and fully excavate transformer station's energy conservation potential, to Substation Station load especially mainly station load power consumption carry out research and be very important.

All only concentrate in the overall power consumption research of station load to Substation Station load electricity consumption quantifier elimination major part both at home and abroad at present, and do not segment electricity consumption module, more lack to transformer station mainly station loading module power consumption carry out specifically careful analysis, be difficult to realize transformer station and become more meticulous and calculate the target with management.That each loading module power consumption is measured to obtain the usual way of each loading module power consumption in transformer station, but main station load distributes very wide in transformer station and the load such as transformer cooling system, air-conditioning is very large by the impact of the factors such as environment, on the one hand the large and result of surveying work is difficult to accomplish precision, in Practical Project, sometimes need the electricity consumption situation studying multiple transformer station on the other hand, now measurement is all carried out to each transformer station and have little significance.

Summary of the invention

The object of the invention is to overcome the shortcoming of prior art and deficiency, a kind of transformer station mainly station load electricity consumption utility model modeling method is provided.

Object of the present invention is realized by following technical scheme:

A kind of transformer station mainly stands by load electricity consumption utility model modeling method, comprises the step of following order:

S1, decomposition module is carried out to station load;

S2, according to the power consumption situation of station load each month in recent years, 1 year station load power consumption is divided into several stages;

S3, statistics transformer station mainly stand with the type of load, installation site, quantity, rated power, moving law, form main station power load distributing table respectively;

S4, to the illuminator of installation site different in transformer station, air-conditioning system according to running electric rule and purposes is classified;

S5, in conjunction with load operation rule and each influence factor to the influence degree of main station load power consumption, obtain the per day working time of main station load of each stage;

S6, electricity is utilized to calculate the power consumption of formulae discovery each main station loading module.

Described transformer station mainly stands by load electricity consumption utility model modeling method, specifically comprises the step of following order:

A, be 7 large modules by station load decomposition: air-conditioning system, illuminator, transformer cooling system, field dynamic power system, DC power system, ups power system, the power supply system for communications;

B, according to the power consumption situation of station load each month in recent years, 1 year station load power consumption is divided into several stages;

C, statistics transformer station mainly stand with the type of load, installation site, quantity, rated power, moving law, form main station power load distributing table respectively; Described main station load is transformer cooling system, air-conditioning system, illuminator; Wherein air-conditioning system, transformer cooling system power consumption are subject to the impact of ambient temperature comparatively large, and other load power consumptions are little by extraneous thermal effect; These load characters of transformer cooling system, air-conditioning system, illuminator are that rated power is large, quantity is many, power consumption is large, energy conservation potential is large, and other station load characters are that power consumption is comparatively fixing and power consumption is few, energy conservation potential is little, so transformer cooling system, air-conditioning system, illuminator are called main station load.

D, according to load operation rule and purposes, the illuminator of the different installation site of transformer station, air-conditioning system to be classified respectively; And in transformer station transformer cooling system due to installation site, moving law, purposes often identical, so do not need to classify to this load;

E, in conjunction with load operation rule and each influence factor to the influence degree of main station load power consumption, obtain the per day working time of main station load of each stage;

F, electricity is utilized to calculate the power consumption of formulae discovery each main station loading module.

Described step S2 or step B is specially: power consumption basic simlarity in a year is classified as the same stage month, thus 1 year station load power consumption is divided into several stages.

In step S3, described illuminator, air-conditioning system, transformer cooling system distribution table comprise following information: load type, installation site, quantity, rated power, moving law.

Described illuminator, air-conditioning system moving law comprise: open throughout the year, manually opened, all work hours all open when patrolling and examining, the part work hours open, night opens;

Transformer cooling system moving law comprises: forced oil-circulation air cooled transformer, opens fan when upper strata oil temperature 55 DEG C, opens oil pump when oil temperature is 65 DEG C; Natural circulation air-cooling transformer, opens fan when upper strata oil temperature 55 DEG C, stops fan when 45 DEG C.

In step S5 or step e, the described main station load per day working time refers to load operation equivalent operation time day under nominal power, and this time is relevant with main station load operation rule and external influence factor.

Described step F is specially: utilize electricity to calculate the power consumption of formulae discovery each main station loading module, wherein air-conditioning and lighting load module each stage daily power consumption computing formula are:

$W_1=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{P}_i{T}_i$

$P_i=\underset{j=1}{\overset{s}{\mathrm{\Σ}}}{p}_j\×m_j$

In formula, W ₁refer to the illumination of certain one-phase or the per day power consumption of air-conditioning system in some stages; N refers to the classification number that illumination or air-conditioning system are divided into according to moving law and purposes; P _irefer to the nominal total power of the i-th class illumination or air-conditioning system, T _irefer to that the i-th class illumination or air-conditioning are in certain one-phase per day hours worked, s refers to the light fixture that the rated power that comprises in the i-th class illumination or air-conditioning system is different or air-conditioning classification number, p _jrefer to the rated power of jth kind light fixture or air-conditioning, m _jrefer to light fixture or the air-conditioning quantity of jth kind rated power;

Transformer cooling system loading module power consumption computing formula is:

W ₂＝P×T

$P=\underset{k=1}{\overset{m}{\mathrm{\Σ}}}{p}_k\×n_k$

In formula, W ₂refer to the per day power consumption of certain one-phase transformer cooling system in some stages, P is the total rated power of transformer cooling system, T is certain one-phase transformer cooling system per day working time, and m refers to the transformer cooling system classification number of the different rated power that studied transformer station comprises, p _krefer to kth kind transformer cooling system rated power, n _krefer to the quantity of kth kind transformer cooling system.

Compared with prior art, tool has the following advantages and beneficial effect in the present invention:

(1) decomposition module is carried out to transformer station's load and weight analysis main loads module moving law and set up utility model and calculate each loading module power consumption size, overcome classic method to the defect on the power consumption holistic approach of station, work of transformer substation personnel can clear understanding each loading module electricity consumption situation, is convenient to carry out fine-grained management to main station load;

(2) utilize the general character between transformer station, obtain unknown transformer station each station load power consumption size according to known substation operation rule is approximate.The such as transformer station of 220kV Attended mode, the illuminator moving law in the supplement production such as office, meeting room place is identical, then such lighting load of these transformer stations per day working time is substantially identical, the known transformer station per day working time can be utilized like this as the unknown transformer station per day working time, thus unknown transformer station loading module power consumption size can be estimated, avoid repetitive measurement and investigation, this method error calculated is less, can meet the analysis demand on Practical Project.

(3) transformer station that sets up of the present invention mainly station load electricity consumption raw data that utility model inputs is easy to acquisition, computation model is simple, avoid a large amount of surveying work, the general character existed between transformer station can be made full use of simultaneously, utilize known substation information to estimate unknown transformer station each loading module power consumption size, Practical Project has very strong practical value.

The data being easier to obtain in transformer station comprise load installation site, main station, rated power, quantity, moving law, the present invention with these data for according to building transformer station, mainly station load electricity consumption utility model can the power consumption of approximate treatment station loading module, its basic ideas are: the raw data of input main station power load, comprise transformer station mainly to stand the rated power of power load, quantity, per day working time, final export transformer station's each main station loading module day/moon/season/year power consumption; When building above-mentioned model, air-conditioning, transformer cooling system per day working time are subject to the impact of ambient temperature factor comparatively large, so difference this value of month is different.Be divided into spring, summer, autumn and winter four-stage to study respectively by 1 year for the method that this kind of problem is traditional, but boundary so is not stage by stage clearly, so month similar for power consumption is classified as the same stage according to the station load power consumption situation of each month in recent years by the present invention.Air-conditioning, illuminator installation site in transformer station is various, common are master-control room, hyperbaric chamber, the places such as office, but the load operation rule of different installation site and purposes are identical, its per day hours worked can regard identical as, in order to avoid calculating one by one the load power consumption of each room, so air-conditioning and lighting load are sorted out according to load operation rule and purposes by the present invention, by the air-conditioning to a large amount of different installation site, illuminator power consumption calculates and is converted into several class air-conditioning, electric consumption on lighting gauge is calculated, obvious reduction calculated amount, the obvious workload reducing calculating electricity.

Accompanying drawing explanation

Fig. 1 is main station load electricity consumption utility model modeling general introduction figure;

Fig. 2 is the process flow diagram of the main station load electricity consumption utility model modeling method of a kind of transformer station of the present invention;

Fig. 3 is Substation Station loading module exploded view.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.

Fig. 1 is utility model modeling general introduction figure of the present invention, its thinking is: input the type of all kinds of main stations load, rated power, quantity, per day hours worked, then through information processing, such as illumination, air-conditioning system are classified, electricity is finally utilized to calculate formulae discovery each main station loading module power consumption size, the present invention adopts utility model to calculate each main loads module power consumption size for certain 220kV transformer station, as Fig. 2, a kind of transformer station mainly stands by load electricity consumption utility model modeling method, comprises the steps:

1) decomposition module is carried out to the station load of studied 220kV transformer station;

If Fig. 3 is this Substation Station load decomposition module map, can find out that this transformer station can be divided into 7 large modules, comprise: air-conditioning system, illuminator, transformer cooling system, field dynamic power system, DC power system, ups power system, the power supply system for communications.The overwhelming majority of station load power consumption is accounted for according to air-conditioning system, illuminator, the large mainly station load power consumption of transformer cooling system three in this transformer station of investigation, and the data of other loading module are difficult to obtain in this transformer station, therefore, mainly the power consumption of this three large loading module is calculated respectively.

2) several stages are divided into according to the power consumption large young pathbreaker station load power consumption in station load each month in recent years.

This 220kV transformer station station load power consumption situation of each month in 2013 ~ 2014 year 1 ~ Dec is obtained by investigation, as shown in table 1 below.

Certain transformer station of table 1 uses load total electricity consumption in station in 2013 ~ 2014 year 1 ~ Dec

Time	Station load power consumption (kW.h) in 2013	Station load power consumption (kW.h) in 2014
			January	3.36	3.60
February	3.48	3.68
			March	3.95	3.91
April	4.34	4.87
			May	5.70	6.60
June	6.93	8.07
			July	7.32	8.58
August	7.69	8.11
			September	7.27	7.36
October	6.11	6.41
			November	4.78	4.59
Dec	4.06	4.32

Can find out 1 from above-mentioned table, 2,3, Dec can be classified as the same stage, is low power consumption period, by the air-conditioning in this stage of extraneous thermal effect and the transformer cooling system electricity consumption time short, so station load power consumption is little; 6,7,8, September, can be classified as the same stage be peak of power consumption period, by the air-conditioning in this stage of extraneous thermal effect and the transformer cooling system electricity consumption time long, so station load power consumption is large; 5, October is the same stage, power consumption compared with 6,7,8, September is few; 4, November is the same stage, power consumption compared with 1,2,3, Dec is bigger.As following table be 12 month of station load power consumption be divided into the concrete division of four-stage.

Table 2 station load power consumption divided stages

Stage	Month
		First stage	12、1、2、3
Subordinate phase	6、7、8、9
		Phase III	5、10
Fourth stage	4、11

3) add up transformer station mainly to stand with load installation site, quantity, rated power, moving law, form substation illumination system, air-conditioning system, transformer cooling system distribution table respectively.If following table 3,4,5 is the 220kV transformer station three kinds of main station power load distributing tables in 2014 obtained by transformer station's investigation.

Certain 220kV substation illumination system distribution situation of table 3

Certain 220kV air-conditioning system of transformer station distribution situation of table 4

Certain 220kV transforming plant main transformer cooling system distribution situation of table 5

Can find out in transformer station from the power load distributing table of above main station throw light on, air-conditioning system distributing position is various, but the load operation rule of different installation site and purposes are identical again, it is used that the such as illumination in rest room, dining room, kitchen all belongs to life area, and moving law is all open the part work hours.

4) air-conditioning system of installation site different in transformer station, illuminator are classified according to moving law and purposes.

Due to air-conditioning system in transformer station and the dispersion of illuminator installation site, the air-conditioning system of each installation site, illuminator power consumption size are carried out one by one to amount of calculation is large, and its moving law of the air-conditioning of different installation site, illuminator and purposes are identical, so can classify to these loads of different installation site, so only need to analyze several class air-conditioning, illuminator power consumption, as illumination and air-conditioning system classification results in following table 6 and table 7 respectively transformer station.

The genealogical classification of table 6 substation illumination

Table 7 air-conditioning system of transformer station is classified

5) in conjunction with main station load operation rule and each influence factor to the influence degree of main station load power consumption, determine the per day working time in all kinds of main stations load each stage.

Ambient temperature does not affect illuminator, so illuminator is identical in the per day working time of different phase.

Transformer cooling system, air-conditioning system are very large by extraneous thermal effect, and temperature is higher, and these loads per day working time is larger.According to the record of work of transformer substation personnel, the present invention learns that the studied 220kV transformer station main station load different phase per day working time in 2014 is as shown in table 8 below.

Certain 220kV transformer station of table 8 mainly stood with load per day hours worked

6) electricity is utilized to calculate the power consumption of formulae discovery each main station loading module

Air-conditioning and lighting load module each stage daily power consumption computing formula are as follows:

$W_1=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{P}_i{T}_i$

$P_i=\underset{j=1}{\overset{s}{\mathrm{\Σ}}}{p}_j\×m_j$

In formula, W ₁refer to the illumination of certain one-phase or the per day power consumption of air-conditioning system in some stages; N refers to the classification number that illumination or air-conditioning system are divided into according to moving law and purposes; P _irefer to the nominal total power of the i-th class illumination or air-conditioning system, T _irefer to that the i-th class illumination or air-conditioning are in certain one-phase per day hours worked, s refers to the light fixture that the rated power that comprises in the i-th class illumination or air-conditioning system is different or air-conditioning classification number, p _jrefer to the rated power of jth kind light fixture or air-conditioning, m _jrefer to light fixture or the air-conditioning quantity of jth kind rated power.

Transformer cooling system loading module power consumption computing formula is as follows:

W ₂＝P×T

$P=\underset{k=1}{\overset{m}{\mathrm{\Σ}}}{p}_k\×n_k$

In formula, W ₂refer to the per day power consumption of certain one-phase transformer cooling system in some stages, P is the total rated power of transformer cooling system, T is certain one-phase transformer cooling system per day working time, and m refers to the transformer cooling system classification number of the different rated power that studied transformer station comprises, p _krefer to kth kind transformer cooling system rated power, n _krefer to the quantity of kth kind transformer cooling system.

Adopt above-mentioned formulae discovery 220kV transformer station main station load daily power consumption in 2014 as shown in table 9 below:

Certain 220kV transformer station of table 9 mainly stands by loading module power consumption situation in each stage

As can be seen from above calculating, in this 220kV transformer station, Climate Control Module power consumption is maximum, and illuminator and transformer cooling system power consumption less, so transform for air-conditioning system in this transformer station, its final energy conservation potential is maximum.Each main loads module power consumption can be calculated fast, the management that work of transformer substation personnel can become more meticulous to station load according to different phase power consumption size by the inventive method.

Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (9)

1. transformer station mainly stands by a load electricity consumption utility model modeling method, it is characterized in that, comprises the step of following order:

S1, decomposition module is carried out to station load;

S2, according to the power consumption situation of station load each month in recent years, 1 year station load power consumption is divided into several stages;

S3, statistics transformer station mainly stand with the type of load, installation site, quantity, rated power, moving law, form main station power load distributing table respectively;

S4, to the illuminator of installation site different in transformer station, air-conditioning system according to running electric rule and purposes is classified;

S5, in conjunction with load operation rule and each influence factor to the influence degree of main station load power consumption, obtain the per day working time of main station load of each stage;

S6, electricity is utilized to calculate the power consumption of formulae discovery each main station loading module.

2. transformer station according to claim 1 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, described step S2 is specially: power consumption basic simlarity in a year is classified as the same stage month, thus 1 year station load power consumption is divided into several stages.

3. transformer station according to claim 1 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, in step S5, the described main station load per day working time refers to load operation equivalent operation time day under nominal power, and this time is relevant with main station load operation rule and external influence factor.

4. transformer station according to claim 1 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, specifically comprises the step of following order:

A, be 7 large modules by station load decomposition: air-conditioning system, illuminator, transformer cooling system, field dynamic power system, DC power system, ups power system, the power supply system for communications;

B, according to the power consumption situation of station load each month in recent years, 1 year station load power consumption is divided into several stages;

C, statistics transformer station mainly stand with the type of load, installation site, quantity, rated power, moving law, form main station power load distributing table respectively; Described main station load is transformer cooling system, air-conditioning system, illuminator;

D, according to load operation rule and purposes, the illuminator of the different installation site of transformer station, air-conditioning system to be classified respectively; And in transformer station transformer cooling system due to installation site, moving law, purposes often identical, so do not need to classify to this load;

E, in conjunction with load operation rule and each influence factor to the influence degree of main station load power consumption, obtain the per day working time of main station load of each stage;

F, electricity is utilized to calculate the power consumption of formulae discovery each main station loading module.

5. transformer station according to claim 4 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, described step B is specially: power consumption basic simlarity in a year is classified as the same stage month, thus 1 year station load power consumption is divided into several stages.

6. transformer station according to claim 4 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, in step C, described illuminator, air-conditioning system, transformer cooling system distribution table comprise following information: load type, installation site, quantity, rated power, moving law.

7. transformer station according to claim 6 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, described illuminator, air-conditioning system moving law comprise: open throughout the year, manually opened, all work hours all open when patrolling and examining, the part work hours open, night opens;

Transformer cooling system moving law comprises: forced oil-circulation air cooled transformer, opens fan when upper strata oil temperature 55 DEG C, opens oil pump when oil temperature is 65 DEG C; Natural circulation air-cooling transformer, opens fan when upper strata oil temperature 55 DEG C, stops fan when 45 DEG C.

8. transformer station according to claim 4 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, in step e, the described main station load per day working time refers to load operation equivalent operation time day under nominal power, and this time is relevant with main station load operation rule and external influence factor.

9. transformer station according to claim 4 mainly stands by load electricity consumption utility model modeling method, it is characterized in that, described step F is specially: utilize electricity to calculate the power consumption of formulae discovery each main station loading module, wherein air-conditioning and lighting load module each stage daily power consumption computing formula are:

$W_1=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{P}_i{T}_i$

$P_i=\underset{j=1}{\overset{s}{\mathrm{\Σ}}}{P}_j\×m_j$

In formula, W ₁refer to the illumination of certain one-phase or the per day power consumption of air-conditioning system in some stages; N refers to the classification number that illumination or air-conditioning system are divided into according to moving law and purposes; P _irefer to the nominal total power of the i-th class illumination or air-conditioning system, T _irefer to that the i-th class illumination or air-conditioning are in certain one-phase per day hours worked, s refers to the light fixture that the rated power that comprises in the i-th class illumination or air-conditioning system is different or air-conditioning classification number, p _jrefer to the rated power of jth kind light fixture or air-conditioning, m _jrefer to light fixture or the air-conditioning quantity of jth kind rated power;

Transformer cooling system loading module power consumption computing formula is:

W ₂＝P×T

$P=\underset{k=1}{\overset{m}{\mathrm{\Σ}}}{P}_k\×n_k$

In formula, W ₂refer to the per day power consumption of certain one-phase transformer cooling system in some stages, P is the total rated power of transformer cooling system, T is certain one-phase transformer cooling system per day working time, and m refers to the transformer cooling system classification number of the different rated power that studied transformer station comprises, p _krefer to kth kind transformer cooling system rated power, n _krefer to the quantity of kth kind transformer cooling system.