1、 battery group; Power source; Detection; maintenance IntroductionThe electric power communication system center room equipped with a large amount of storage battery installation, on the communications department.The operation of the electric power systems and support, spare play an important role. B
2、ut in the maintenance process, or will often meet many problems, a detailed analysis of the below.1. The battery power supply condition and analyzes the reasonsWe for large communication machine. Room on the actual test, to the battery power supply system for the comprehensive study, found that many
3、 rooms, communications equipment have low load capacity battery, system reliability of the poor, in here are two groups of data about battery problems:A. battery service life for the design of the general 8-1 O years, and statistical data show that the battery life ideal circumstances can achieve 4-
4、6 years, generally can not meet the design demand, a large number of telecommunication room used less than 3 years （some two years） appear behind battery, part of the battery even scrapped;B. 2010 years urumqi power bureau telecommunication room data show that because the battery electric power comm
5、unication power supply fault from accidents accounted for 35%, in recent years the data interface rapidly, the ratio has risen to 7%.Two sets of data to show that the problem is more serious battery, the battery power supply of security and reliability have a serious threat, investigate its reason,
6、mainly in the following nine aspects:1.1 battery design process qualityThe battery design process exists plate technology design, material design, oxygen composite design, the pressure setA comprehensive plan defect, make a battery performance and life have been affected, main performance for batter
7、y failure, early leakage water loss, deformation cracks, etc.For simple ascending battery capacity, will the battery plate thin, and increase the number plate, makes the same volume of the casing electrolyte reaction area greatly increased, capacity improve soon, but because thin plate, plate easily
8、 corrosion, softening battery, service life and therefore greatly shorten, easy to produce the early failure problems.Because of the low pressure setting, charge once to a certain pressure, control valves will be openRev., gas is through the valve were leaked, cause the battery fluid loss （usually i
9、n a hole or a column valve will find a slightly damp near the liquid）, this kind of battery also easy to produce the early failure, valve pressure design and material also has a direct relationship between the shell.Due to shell material, oxygen composite efficiency, valve design pressure, and other
10、 comprehensive technology lack, some batteries in the process of charging and discharging pool, easy to produce the shell deformation, beat even crack.1.2 the influence of the operation environmentRunning environment is the main room temperature on battery life influence is bigger, in 25 environment
11、 conditions, the environmental average temperature increase every 10 , battery life is reduced by half. Northwest temperature changes greatly （a 30 a + 55 C）, the substation telecommunication room less equipped with air conditioner, thermal performance is poor, temperature on battery life form direc
12、tly influence.1.3 operation mode and installation methodBattery packs are generally more battery series into a group, two groups of parallel operation. Site oftenFound in the internal battery, article connection （board） corner of battery performance generally have slightly worse, the main reason is
13、the article connection too long （other connection is the article 5 a l0 times） and the materials of the contact resistance caused too large, lead to the connection of pressure drop article is too big, in the process of charging and discharging, will seriously affect peripheral battery charging and d
14、ischarging effect, this kind of problem should be avoided.1.4 the quality of power supply and load design problemThe telecom room is located in remote general transformer substation, often without power and the battery in frequent charged, and discharge status, the serious influence battery life. Co
15、mputer room load relative to the battery capacity are slants small, such as the actual load for 30 A, communications equipment configuration of battery capacity is commonly two groups of 300 Ah, the utility after interrupting, storage battery will to tiny current began to discharge, and small discha
16、rge current generation of sulfuric acid lead particles is easy to crystallization into pieces and E telecommunication room are generally rural power supply, the quality of power supply is not stable, power over A long period of time, power outages frequent, sulfuric acid lead particles generated mor
17、e easily irreversible sulfate.1.5 professional testing methods and lack of equipmentIn the discharge detection, due to lack of monomer detection equipment protection functions, therefore, in discharge only by the group when voltageobservation, combined with manual measuring for inspection. Find a 1.
18、8 v battery, immediately suspend test. This way low efficiency, safety all the sex differences, to the battery cant form an effective protection.The battery characteristic parameters are mainly embodied in the voltage, resistance and capacity, the conventional detection method mainly measuring volta
19、ge, observe the shell signs, check the bolt tightness etc. So that only some representations to the parameter, and cannot masters important! Parameters such as resistance, capacity, etc.1.6 charger, discharge management system is not perfectRecharging problems mainly involves to charge cycle, all ar
20、e charging pressure, flow, all are charging filling time,All filling conversion control, float temperature compensation of detailed regulations.Some maintenance personnel to improve battery charging efficiency, improved charging voltage, and increase the charging current, leading to increased pressu
21、re, then combined low efficiency, the battery to dehydrate, are plate bar corrosion. With this several years of battery management know deeply, related problems reduce gradually, but for this problem or must cause enough attention to main pay attention to the following three points: one is the charg
22、e cant charge high pressure, even with are charging, voltage must also be restricted in 2.35 V scope （the new battery should be controlled in 2-3 V）; 2 it is charging electric current cannot too much, it will speed up plates corrosion, cause plate softening, restrain oxygen composite efficiency; 3 i
23、t is charging process must be temperature compensation, compensation coefficients for a 3 mV / 2 mV / C one.2. Testing and maintenance program2.1 replacement has serious degradation the battery packs, strengthen the selection of the batteryTo find Bi can have depth degradation and a serious threat t
24、o the security of the battery power supply systemGroups should be early change, and strengthen the battery technology selection. Process quality problem is the focus of the selection consider battery, the battery can be based on standard, battery makers to raise specific technical requirements, such
25、 as of the materials, valve pressure., plate thickness, quantity, voltage, resistance Sui, balanced equilibrium characteristics, oxygen composite efficiency, water loss rate, for through the acceptance test can detect project, must conduct test on these work can be further ensure the reliability of
26、the battery for long-term use.Vrla batteries for production technology is strict, at present domestic battery lifeManufacturers in the more than 300, all sorts of technology of handicraft is various, the proposal is in before purchase, the battery rigorous screening, as far as possible choice comple
27、te production equipment, strong technical force, service facilities, perfect brand enterprise. ,2.2 strengthen early battery test, improve battery support ability of put into operationAt the beginning of the storage battery check is a very important testing link, the battery technology standardsIn e
28、arly to check the battery has a clear request, the engine room of the electric power communication battery installation, run and maintenance and management is of important significance. For the specific requirements of the early battery check is: batteries before put into operation, the first first
29、check sex discharge, its capacity should be not less than 95%, after the completion of the discharge to the battery charge; Filled, a quiet place 1-2 h, make a second check sex discharge, after the completion of the discharge of battery charge; Filled, a quiet place 1 2 h, third check Bi discharge,
30、its capacity should be not less than 100%, after the completion of the discharge to charge the battery.2.3 maintenance change ideas, strengthen the battery power supply of professional monitoring managementProfessional centralized monitoring system in the traditional monitoring system based on the f
31、unction, increase the storage of electricityPool monomer battery voltage, resistance and check test functions, the more the earth played a monitoring management functions, improve the maintenance efficiency.Implementing specialized monitoring, and other installation common monitoring or not pack monitoring communications equipment phaseThan, the power supply rate reduced greatly, found that the
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