How to solve the problem of photovoltaic power generation is low?

Rainy weather or low capacity, at 6 o 'clock in the morning is due to the weak light conditions, is normal phenomenon, do not belong to the exception. Often went unquestioned capacity, the total generating capacity, also refers to the real time power generation efficiency. Low power refers to under the condition of normal sunshine

due to the weak light conditions, rainy days or 6 a. m. low capacity is a normal phenomenon, not the exception. Power usually include daily energy and total energy, total power generation and in the case of real time power generation efficiency. Under the condition of low power refers to the normal sunshine, a certain period of time the average output of low, or the average capacity is lower than the same configuration system. A group of abnormal judgment method test series inverter DC current, with the group comparison of current value should be input in the string. If significantly less than the current value should be input resistance string, photovoltaic (pv) + and photovoltaic - is measured with a multimeter side Between voltage, if the measured voltage is zero, then disconnect the set of strings; If the measured voltage is negative, pv + and photovoltaic Reverse connection. GW20KW - case analysis DT has 2 MPPT circuit, each MPPT circuit has two groups input circuit. If the current single channel series of 8. 5 a, if the use of all input channels, normal DC current for 17 a / 17 a, if shows 17/8 a. 5 a, the second MPPT circuit of an input channel has a problem; If according to 17 a / 0 a, the second MPPT circuit does not work. A MPPT circuit damaged judgment method to ensure that the group list of voltage higher than the starting voltage ( A multimeter is used to measure the group string of pv voltage between + and photovoltaic) Group, and only the connection string to see whether the machine can be started. If the machine can't start, MPPT circuit will be damaged. Case analysis q: GW4200D - model NS, only half of the electricity generated by the others, have the same machine, components and installation. A: only a set of strings are connected. If only PV1 can open, only p2v can't open, may be a p2v p2v terminal lists of broken or damaged. Multimeter can be used to measure the p2v group list of voltage, to determine whether or not they are connected to normal, or string received p2v PV1 group, to determine the p2v terminals is normal. Photovoltaic components surface of dust and obstacles. Cause analysis dust accumulated on the surface of the photovoltaic panels, which reduces the photovoltaic glass light transmittance and photovoltaic panels on the surface of the output performance. The dust concentration, the greater the light transmittance is lower, the lower panel to absorb solar radiation, the lower the output performance. Module will be deemed to be the shadow of photovoltaic modules used preferentially energy load, thus reducing the output power. Measures of photovoltaic modules periodically to ensure clean and wipe the surface cleaning, and can be full sunlight. Ensure that no obstacles near the pv modules, if you have, please handle in time. Case analysis and comes to the left and right sides, at 7:30 capacity decreased obviously. If electricity at the same time every day to reduce, is likely to be caused by a shade. Photovoltaic modules do not match the selection and installation. Cause analysis, if the series of components in series with the same set of specifications, installation Angle and the direction is inconsistent, the input voltage and current will be lower, and the input power will be affected. The same MPPT circuit consists of multiple groups of series and parallel. In order to ensure that parallel after the voltage is not pulled low, should as far as possible to ensure the number of components connected to the group and the same specification. Measures to ensure that after the series-parallel voltage and current is not pulled low, usually to adjust the components as much as possible, to make the same number of input channels connected component specifications, installation Angle and direction are consistent, the same MPPT circuit different number of the number of input channels connected components and specifications are the same.