CN105117798A - A method for calculating configuration coefficients K[P] of applied and installed capacity of residence communities - Google Patents

Abstract

The invention relates to a method for calculating configuration coefficients K[P] of applied and installed capacity of residence communities. 10-20 typical residence communities are selected; distribution transform capacity sections of the residence communities are calculated according to adopted data of the residence communities; a value taking section of each configuration coefficient K'[P] is calculated according to the distribution transform capacity sections; optimal economic operation load coefficients of voltage transformers are calculated according to voltage instruments arranged for the residence communities; a value taking section of the corresponding configuration coefficient K''[P] is calculated according to each optimal economic operation load coefficient; an intersection between the value taking section of the K'[p] and the value taking section of the K''[P] is taken; and a mean value K[P] of a maximum configuration coefficient K[Pmax] and a maximum configuration coefficient K[Pmin] of the intersection is calculated and obtained to be as a benchmark value. After the taken value of the configuration coefficient K[P] calculated through the method of the invention is adjusted, the applied and installed capacity of the residence community can be reduced to a certain degree compared with the applied and installed capacity before the adjusting. Power distribution equipment can be correspondingly reduced.

Description

The configuration coefficients K of capacity is applied to install in a kind of residential quarters pcomputing method

Technical field

Electric power consumer field of configuration of the present invention, particularly for the configuration coefficients K of capacity is applied to install in a kind of residential quarters _pcomputing method.

Background technology

Originally the capacity that reports according to client of residential quarters distribution capacity, is multiplied by cell configuration COEFFICIENT K _pdraw, actual result be community saturated year power load and actual installation capacity have a long way to go, even if consider the growth (saturated year) of load, actual installed capacity is still much larger than required installed capacity, and device resource configuration exceeds excessive, will cause the waste of resource and the energy, should choose reasonable join, converting equipment, accomplish the need for electricity that can meet community, reasonably can reduce construction costs again, investment reduction.

Summary of the invention

Technical matters to be solved by this invention is to provide one to reduce construction costs, and the object of investment reduction provides the residential quarters of rational configuration coefficients to apply to install the configuration coefficients K of capacity _pcomputing method

The present invention is achieved in that the configuration coefficients K of capacity is applied to install in a kind of residential quarters _pcomputing method,

Choose 10 ~ 20 model dwelling communities, the condition that residential quarters meet is: gross building area is between 10-35 ten thousand square metres, and floor is high residential building more than 26 layers; Occupancy rate is more than or equal to 75%; Community electricity consumption enters the saturated year; The capacity of distribution transform calculating each residential quarters according to the data of taked each residential quarters is interval, goes out configuration coefficients K` according to capacity of distribution transform interval computation <sub>p</sub>interval, calculates transformer optimal economic running load coefficient according to the voltage device that each residential quarters configure, and goes out corresponding configuration coefficients K`` according to optimal economic running load coefficient calculations <sub>p</sub>interval, gets configuration coefficients K` _pinterval and configuration coefficients K`` _pthe common factor of interval, asks for interval interior maximum configured COEFFICIENT K of occuring simultaneously _pmaxwith get maximum configured COEFFICIENT K _pminmean value K _pas reference value.

Further, configuration coefficients K` _pthe computing method of interval comprise:

1) the calculation plot peak load of all moving in, computing method:

Power consumption per family=Urban Annual Electrical Power Consumption amount/actual electricity consumption amount;

The year power consumption of all moving in=power consumption per family × total amount;

The year power consumption of the peak load of all moving in=all move in/maximum utilizes hourage;

2) saturated annual peak load is calculated, computing method according to the peak load of all moving in:

Peak load × (1+8.5%) of saturated annual peak load=all move in ⁿ, n value is 5, and saturated computing time in year is 5 years;

3) the minimum capacity of distribution transform of the residential quarters selected by saturated annual peak load calculating and maximum capacity of distribution transform: minimum capacity of distribution transform=saturated annual peak load/0.75; Maximum capacity of distribution transform=saturated annual peak load/0.23;

4) derive distribution transforming load factor according to maximum capacity of distribution transform, calculate configuration coefficients K` _pinterval, is drawn by following computing formula:

Load factor=maximum capacity of distribution transform/apply to install capacity;

Configuration coefficients K` _p=load factor × simultaneity factor.

Wherein, according to electric power system design handbook, daily life electricity consumption simultaneity factor is actual gets 0.92, and saturated year gets 1.

Compared with prior art, beneficial effect is in the present invention: configuration coefficients is vital data, is related to the selection of power equipment model, special in some large-area residential quarters, the difference of configuration coefficients, to power equipment, especially the selection differences of transformer capacity is very large.During the distribution network primary construction of community, in low-voltage cabinet, main switch, bus bar, inlet wire cable etc. need put in place by saturated year power load configuration, and reserved certain low-voltage cabinet position, avoid the overlapping investment that electrical equipment short-term replacing etc. brings.

Adopt the configuration coefficients K that the inventive method calculates _pafter value adjustment, community is applied to install before capacity comparatively adjusts, and has the reduction of certain amplitude.Controller switching equipment also can correspondingly reduce.This will save the power construction investment of a part of community, meanwhile, also make the nargin of power system device installed capacity larger.Through the K that the inventive method calculates _p, power construction investment in community approximately can save nearly 15%, and economic benefit is comparatively obvious, reaches reduction construction costs, the object of investment reduction.

The present invention, according to Urban Annual Electrical Power Consumption amount/actual electricity consumption amount, obtains per family after power consumption, then is multiplied by the year power consumption that total amount all moved in, then divided by the peak load utilizing hourage namely all to move in.Saturated annual peak load computing method: the peak load that saturated annual peak load equals all to move in is multiplied by 1.50 (formula illustrates 5 years resident living power utility amount annual growths).Installed capacity required after calculating adjustment by saturated annual peak load and transformer economic operation coefficient 0.75, then calculate the configuration coefficients after adjustment according to configuration coefficients definition.Utilize new configuration coefficients K _p, rational community actual installation capacity, finally reaches the object of restriction controller switching equipment capacity.Increase by 8.6% every year according to the Eleventh Five-Year Plan period areas of Shenyang resident living power utility amount, regional peak load increases by 8.5% every year, predicts saturated year power consumption and peak load index.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

Embodiment

For areas of Shenyang, the configuration coefficients K of capacity is applied to install in a kind of residential quarters _pcomputing method, comprise following step:

1) data statistics, chooses 10 ~ 20 model dwelling communities, and the condition that residential quarters meet is: gross building area is between 10-35 ten thousand square metres, and floor is high residential building more than 26 layers; Occupancy rate is more than or equal to 75%; Community electricity consumption enters the saturated year;

Model dwelling community basic situation selected by table 1

Unit: m2; Family

Capacity-load ratio statistical form in typical cell selected by table 2

2) the calculation plot peak load of all moving in, computing method:

Power consumption per family=Urban Annual Electrical Power Consumption amount/actual electricity consumption amount;

The year power consumption of all moving in=power consumption per family × total amount;

The year power consumption of the peak load of all moving in=all move in/maximum utilizes hourage;

3) saturated annual peak load is calculated, computing method according to the peak load of all moving in:

Peak load × (1+8.5%) of saturated annual peak load=all move in ⁿ, n value is 5, and saturated computing time in year is 5 years;

3) the minimum capacity of distribution transform of the residential quarters selected by saturated annual peak load calculating and maximum capacity of distribution transform: minimum capacity of distribution transform=saturated annual peak load/0.75; Maximum capacity of distribution transform=saturated annual peak load/0.23;

4) derive distribution transforming load factor according to maximum capacity of distribution transform, calculate configuration coefficients K` _pinterval, is drawn by following computing formula:

Load factor=maximum capacity of distribution transform/apply to install capacity;

Configuration coefficients K` _p=load factor × simultaneity factor.

5) transformer economic operation method calculating transformer optimal economic running load coefficient is adopted,

According in " economic operation of power transformer " (GB/T12462-2008), relevant economical operation Division regulation is learnt: transformer is the Economic moving region upper limit at rated load operation, and another point equal with the upper limit specified power loss rate is Economic moving region lower limit.

The function characteristic that △ P%=f (β) is transformer synthesis power attenuation rate and average load factor beta.By transformer characteristic curved line relation formula:

$\mathrm{\&Delta;}P\%=\frac{P_0+K_T{\mathrm{\&beta;}}^2{P}_K}{{\mathrm{\&beta;S}}_N\cos \mathrm{\&phi;}+P_0+K_T{\mathrm{\&beta;}}^2{P}_K}$

In formula:

β-transformer average load coefficient;

K _t-fluctuation of load loss factor;

P _o-transformer synthesis power open circuit loss;

P _kthe loss of-transformer synthesis power rating bearing power.

Wherein, K _t=1.05, P _o=1.2kW, P _k=6.2kW take capacity as 630kVA substation transformer is example, in conjunction with known zero load and load loss, can show that transformer optimal economic running load coefficient is between β min ~ β max.When Ji Dang community saturated year, optimal economic running load coefficient was maximum, the distribution transformer capacity that need install is minimum, and the distribution transformer capacity that need install is maximum, releases configuration coefficients K`` according to load factor _pspan.

Get configuration coefficients K` _pinterval and configuration coefficients K`` _pthe common factor of interval obtains the interval of required configuration coefficients, asks for maximum configured COEFFICIENT K _pmaxwith get maximum configured COEFFICIENT K _pminmean value K _pas reference value.

The embodiment of the present invention by the overview to 10 model dwelling communities, occupancy rate, controller switching equipment, year, the moon data such as power consumption carry out statistical study, these 10 actual power loads in residential quarters of accurate calculating, and take into full account community electricity consumption simultaneity factor, and the composite factor such as each community future development scale, sum up the configuration coefficients K calculating and make new advances _p.

The present invention, according to Urban Annual Electrical Power Consumption amount/actual electricity consumption amount, obtains per family after power consumption, then is multiplied by the year power consumption that total amount all moved in, then divided by the peak load utilizing hourage namely all to move in.Saturated annual peak load computing method: the peak load that saturated annual peak load equals all to move in is multiplied by 1.50 (formula illustrates 5 years resident living power utility amount annual growths).Installed capacity required after calculating adjustment by saturated annual peak load and transformer economic operation coefficient 0.75, then calculate the configuration coefficients after adjustment according to configuration coefficients definition.Utilize new configuration coefficients K _p, rational community actual installation capacity, finally reaches the object of restriction controller switching equipment capacity.Increase by 8.6% every year according to the Eleventh Five-Year Plan period areas of Shenyang resident living power utility amount, regional peak load increases by 8.5% every year, predicts saturated year power consumption and peak load index.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. the configuration coefficients K of capacity is applied to install in residential quarters _pcomputing method, it is characterized in that,

Choose 10 ~ 20 model dwelling communities, the condition that residential quarters meet is: gross building area is between 10-35 ten thousand square metres, and floor is high residential building more than 26 layers; Occupancy rate is more than or equal to 75%; Community electricity consumption enters the saturated year; The capacity of distribution transform calculating each residential quarters according to the data of taked each residential quarters is interval, goes out configuration coefficients K` according to capacity of distribution transform interval computation <sub>p</sub>interval, calculates transformer optimal economic running load coefficient according to the voltage device that each residential quarters configure, and goes out corresponding configuration coefficients K`` according to optimal economic running load coefficient calculations <sub>p</sub>interval, gets configuration coefficients K` _pinterval and configuration coefficients K`` _pthe common factor of interval, asks for the interval interior maximum configured COEFFICIENT K P that occurs simultaneously _maxwith get maximum configured COEFFICIENT K P _minmean value K _pas reference value.

2. the configuration coefficients K of capacity is applied to install according to residential quarters according to claim 1 _pcomputing method, it is characterized in that, configuration coefficients K` _pthe computing method of interval comprise:

1) the calculation plot peak load of all moving in, computing method:

Power consumption per family=Urban Annual Electrical Power Consumption amount/actual electricity consumption amount;

The year power consumption of all moving in=power consumption per family × total amount;

The year power consumption of the peak load of all moving in=all move in/maximum utilizes hourage;

2) saturated annual peak load is calculated, computing method according to the peak load of all moving in:

Peak load × (1+8.5%) of saturated annual peak load=all move in ⁿ, n value is 5, and saturated computing time in year is 5 years;

3) the minimum capacity of distribution transform of the residential quarters selected by saturated annual peak load calculating and maximum capacity of distribution transform: minimum capacity of distribution transform=saturated annual peak load/0.75; Maximum capacity of distribution transform=saturated annual peak load/0.23;

4) derive distribution transforming load factor according to maximum capacity of distribution transform, calculate configuration coefficients K` _pinterval, is drawn by following computing formula:

Load factor=maximum capacity of distribution transform/apply to install capacity;

Configuration coefficients K` _p=load factor × simultaneity factor.